Some standard content:
B/T 2542-2003 is a professional standard that summarizes the problems in brick inspection in recent years. It is specially adopted by foreign brick test society to replace GB/T2512. The test method of 21S92 is increased. The main changes of this standard compared with GB/T 42-152 are as follows: the test method of negative benefit is increased; the test item of positive resistance is increased: the environmental conditions of general test are set; the test of non-lubricating and lubricating properties is set; the test of thermal efficiency is added. Radioactive material testing has been added.
This standard was proposed by the National Building Materials Industry Bureau (formerly Dongyangshan). The four research institutes of this standard are responsible for drafting this standard, and the four research institutes of this standard participated in the formulation of this standard, including China New Building Materials Research and Design Institute, Henan Building Materials Research and Design Institute, Guangdong Building Materials Production Quality Supervision and Inspection Institute, Xinjiang Building Materials Science and Technology Research Institute. The main persons in charge of the formulation of this standard are: Qing Ling, Shi Ji Liu Shui, Mu Xin Gu, Bai Liao Qian, Piao Xiao Chang, Zhou Xuan. The technical revision of this standard is: GR25421SE1
GHI5/T 2:2-1S
1 Scope
Test methods for masonry bricks
GR/T2542-2003
The standard specifies the test methods for the quality, flexural strength, compressive strength, aging, bulk density, cracking, frost, water loss rate and saturation number of bricks, system and structure, shrinkage, carbonization, radiation and thermal effects of bricks. This standard applies to sintered bricks and non-sintered bricks: sintered bricks including sintered oil-fired bricks, sintered porous bricks including sintered hollow bricks and hollow blocks (hereinafter referred to as core blocks); non-sintered bricks include hot-rolled lime bricks, powder lime bricks, and clear bricks. 2 Normative references
The following documents are applicable to this standard The following are the terms of the standard that are made by reference: For any dated document, all its amendments (excluding errata) are not applicable to the revised version of the standard. The latest version of these documents shall apply to all parties who reach an agreement on whether to use them: For any undated referenced document, its latest version shall apply to this standard. GB/T-3475 Determination of heat transfer properties of structures and thermal protection methods
GB/TM368—2005 Additives to materials
3 Definitions of terms
(3T83-200% The terms and meanings of the above two standards shall apply. 4 Size
4. ：Use the brick caliper (Figure 1). The graduation value is c.5m.m1. The vertical ... 5 Appearance inspection
5.1
5.1.1 The scale value of the F ruler (Figure 1) is 1.5m.
5.1.2 The scale value of the reporting point is 1mm
5.2 Measurement method
5.2.1 Quick damage
Unit: meter
5.2.1.1 The damaged part of the bottom of the brickwork is measured by a shadow ruler, which is called the average ruler. As shown in Figure 3.
Single Yue is meter
([degree direction effective period scale
width and width of the river reading technique small:
—height with my shadow scale
Figure 3 missing cotton corner acid damage size basic method
5.2.1.2 The defect is caused by the outside system missing part of the Liu strip, blood replacement (hollow brick is a large surface and> according to the shadow surface rent, as shown in Figure 1, the through-heart carbon and the function of the defect reflection inch, with the long reaction force can be measured by the shadow scale, 2
degree direction projection scale,
actual point: projection has no plan,
5.2.2 relatively
single for the purpose
Figure 4 missing on the strip, item surface The above-mentioned method of measuring the failure surface is GB/T2542-2003. The length of the agricultural pattern is three-dimensional, the width is the horizontal force direction and the projected length is measured in the wave force direction. If the crack is recognized as a surface extending from the other surface, then the projected length of the extension is calculated. The single pull can be subjected to the technique. 9) The width of the micro-texture length area reaches the length according to the direction of the government length station. Figure 5 is the effective length measurement. The underwater type length station is called the brick. The etiquette and signature pattern are connected. The time is included in the pattern. The measurement is shown in 6.5.2.2.2. Unit law. The total length of the old technology.
Figure 6 The length of porous brick cracks passing through holes and the length of the cracks 5.2.2.3 The length of the cracks in each direction is taken as the measurement result. 5.2.3 Curvature
5.2.3.1 The curvature is measured on the large surface and strip respectively. When the maximum curvature is reached, the yardstick is placed along the two sides of the small ruler. The curvature is multiplied by the ruler from the maximum point to the maximum point. The effect is shown in the figure. The place where the impurities are reversed is not included in the calculation. GB/T 2542—2003
Curvature measurement method
5.2.3.2 The length measured in the curvature is taken as the measurement result. 5.2.4 Impurity protrusion
The degree of protrusion caused by impurities on the brick surface is shown by the maximum distance of the impurities from the surface. Measure the brick surface on both sides with the two branches of the ruler, and measure with a white ruler, as shown in Figure 8. Color cover
Impurities out of the crown method
Decoration surface facing up, randomly divided into two parallel, under natural light, at a distance of 2m, the piece is measured, 5.3 The result is buried
Outside measurement is in whole meters, if less than 1 nm, it is calculated as 1m: 6 Flexural test
6.1 Instruments and equipment
6.1.1 Material testing machine
The error of the indicator of the testing machine shall not be greater than ±1, and the pressure plate under the head shall be a ball bearing. The maximum destructive load of the two periods shall be between 20% and 80% of the range.
6.1.2 Flexural method
The flexural load form is three-point loading, the upper pressure and the lower pressure are semi-light grooves, n, and the lower support shall be effectively connected and fixed.
6.1.3 Steel ruler
The graduation value is 1 .
6.2 Test specimens
6.2.1 Number of test specimens
According to the requirements of "H standard".
6.2.2 Sample treatment
Non-reinforced bricks should be placed in a wood with a limit of (25) and 24 meters of surface moisture should be removed for flexural strength test.
E.3 Test steps
GI/T 2642-20Q3
6.3.1 Measure the width and height of the test fence in accordance with Article 4.2 of the specification, and calculate the arithmetic average respectively. Analyze and confirm 1:\. 6.3.2 The span of the grid is mainly 40mml. However, the span of the grid is 30m long, and its span is 16 mm.
5.3.3 Place the test surface flat on the bottom of the test rail, with the distance between the two end surfaces of the test rail and the bottom of the lower support being the same. When the specimen has cracks or cracks, it is obvious that there is a large amount of cracks or sinking. Apply load at a rate of (~50)/: until the specimen breaks and record the maximum load. 5.3.4 Result 32 and evaluation
Each test shall be subjected to the flexural strength of 9 (R> integral formula (1> calculation. Accurate to 0.01Ma. k.
Wu:
Extension strength, unit is megapascals (MPa)
Extension load, unit is bucket period ()
Span, unit is meter m;
Specimen width, unit is water (m ）。
--The sample is for single inspection. 2BH
6.3.4.2 The test results are based on the arithmetic mean and the minimum value of the single expansion of the test fiber 4, and the maximum value is 3.01M. 7 Compressive strength test
7.1 Equipment
7.1.1 Material reduction test machine
. (12
The small relative error of the test information is not more than %, and the lower plate should be or effective. The maximum expected value should be 205--835h
7.1.2 Test piece flatness
The test piece platform must be flat and level, and can be made of metal or other materials. 7. 1.3 levels,
see 23n.~30m.
7.1.4 RulerbZxz.net
Note: 1m:
7.1.5 Power table
Smoke capacity: mm Vibration: 500 times/min 0 times/min
7.1.6 Sample making mold
7.1.7 Slurry mixer
.1.8 Equipment
7.2 Test sample
The test sample shall be determined according to the product standard. 7.3 Preparation of test sample
7. 3.1 Ordinary sample preparation
7.3.1.1 Sintered ordinary brick
a. Cut the test sample in half or cut it in half. The distance between the cutoff points shall not be less than 1nr:, as shown in the figure. It shall not be 1cm. For sample preparation with government standards,
b. On each test platform, put the half-broken piece into the clean room temperature for 10i~2min and then take it out to open the fracture. The thickness of the cement slurry in the middle can not exceed 5mm, etc. The upper and lower parts should not be more than +mm. The upper and lower sides of the hollow bricks must be made in a vertical manner, as shown in Figure 1. The center of the half brick is the height and length of the net material system. The net thickness of the cement slurry layer is shown in Figure 10. 7.3.1.2 The porous brick and hollow brick are made by the production method, that is, the flat surface is prepared by the parts, and the account is as follows, and it must not exceed Use 2.5mm ordinary quality grade 2.5 cement pad to mix into suitable cement net water, and wash the test piece in water for 2umi. Water dripping on the valve wire rack for mir~min, and half of the ground will be changed to water slurry 1 on the positive pin and bed to make a layer of pressure on the surface of the material to break the blood. The ball plate should be thicker than the base. When the big remember, the same plate can be cut and the core can be installed on the glass base. Use a horizontal ruler to control the level of the glass. 7. 3. 1. 3 = non-dense Sa
question, the two halves of the test brick cut corresponding overlap or check the part to get a small "0m", retreat 1 room small. It is the hole music stressed parts, if it is not exactly 10m. The case should be accepted, the unit outside the column is meter
Half monument overlap high diagram
7.3.2 Sample preparation
GB/I2542-203
7.3.2.1 Physical test sheet (sintered general re-transmission plan received two half-air bricks, the general section should be flat, the length of the broken and lower line piece should not be less than IGcmm, as shown in the figure. If less than 1 00mr, take another spare sample to make up for it, 7.3.2.2 Put the broken half into the water purification yard at the original temperature for 20mim~3)vin and take it out, drip water on the wire mesh for 20m~. In this way, the fracture surface is controlled to be 5m and the size of the brick is 3m1. The broken cross section and the surface are very close to the sealing material, and the inner surface of the tool is coated with Shantou or noise-removing agent as shown in Figure 12. |tt||7.3.2.3 Use a sand mixer to adjust the water ratio of the slurry to 5~55 with a frequency level of 32.5 or 42.5.7.3.2.4 Place the mold with the carbon sample on the moving table. Add a small amount of water to the carbon sand on the column 3, and move it (electrically). The water-proof mortar caused by the bricks and molds is 0.5-1: close the storage, Before the rental, the mold is placed on the surface of the product according to the two methods of sample preparation in parallel. The sample is only used for the sample preparation. Figure 12 Sample preparation mold and board 7. Sample preparation cost protection 4.1 The test piece is placed in a small non-winding room with a temperature of not less than 1. After the sample is cured for 24 hours, the mold is taken and then placed in the corresponding 7.4. Carry out the test under the condition of curing and expanding 43.? 7.5. Test steps:
/.5. Measure the length and width of each test piece when the joint or the total length is measured, and the half of the mean value is measured, with an accuracy of m: 75. Place the piece flat on the middle of the plate and add more pressure to the surface. If there is no bull rushing out or the maximum vibration, the product will not be damaged. Take effective measures.
7.E Calculation and evaluation of results
The compression resistance of the test joint is calculated by formula 3,
where:
Compression strength. Unit is MPa MI
- maximum slow load, unit is Newton frequency?
The length of the impact surface (continuous surface). Unit is whole meter (m); B
The width of the impact joint is unit is meter (mm). (2
GB/I2542-20 03
7. After the number of stations, the arithmetic mean and standard letter of the compressive strength of the column are expressed as a small question, and the village is confirmed to be .1Ma, 8 freeze-thaw test
instrument and equipment
can be warm or frozen, or a sample box (the indoor temperature can be widened to 12 or below: 8.1.2 water temperature. The water temperature in the protection zone is preferably 10~, A.1.3 teacher, graduation question 5g.
.1. 4 Tropical effect and property of disease: 2uU
8.2 Test day
Test quantity according to product standard requirements.
8.3 Test steps
A.3.1 Use a dry box to dry the test surface until it is dry at 5°C (the time between the two tests is 2 hours and the weight is not more than 1.2% before and after the transfer), weigh its mass and mark the number of test results.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece.2 Samples
The sample is required to determine the product standard, 7.3 Sample preparation
7.3.1 General sample preparation
7.3.1.1 Sintered general brick
a, cut the test bar or help the family in half, the effect of the break shall not be less than 1nr:, as shown in the figure, not 1cm, and the sample is used with the government,
b. On the test platform, put the broken half of the effect into the clean room temperature for 10i~2min and then take it out to open the fracture. The thickness between the two cannot be strong. The operation is generally to compensate for the water system or dispatch 5
B/12542-2003
The appropriate water range is 5
B/12542-2003
The upper and lower sides should not be more than +mm. The upper and lower sides of the hollow bricks must be made in a vertical manner, as shown in Figure 1. The center of the half brick is the height and length of the net material system. The net thickness of the cement slurry layer is shown in Figure 10. 7.3.1.2 The porous brick and hollow brick are made by the production method, that is, the flat surface is prepared by the parts, and the account is as follows, and it must not exceed Use 2.5mm ordinary quality grade 2.5 cement pad to mix into suitable cement net water, and wash the test piece in water for 2umi. Water dripping on the valve wire rack for mir~min, and half of the ground will be changed to water slurry 1 on the positive pin and bed to make a layer of pressure on the surface of the material to break the blood. The ball plate should be thicker than the base. When the big remember, the same plate can be cut and the core can be installed on the glass base. Use a horizontal ruler to control the level of the glass. 7. 3. 1. 3 = non-dense Sa
question, the two halves of the test brick cut corresponding overlap or check the part to get a small "0m", retreat 1 room small. It is the hole music stressed parts, if it is not exactly 10m. The case should be accepted, the unit outside the column is meter
Half monument overlap high diagram
7.3.2 Sample preparation
GB/I2542-203
7.3.2.1 Physical test sheet (sintered general re-transmission plan received two half-air bricks, the general section should be flat, the length of the broken and lower line piece should not be less than IGcmm, as shown in the figure. If less than 1 00mr, take another spare sample to make up for it, 7.3.2.2 Put the broken half into the water purification yard at the original temperature for 20mim~3)vin and take it out, drip water on the wire mesh for 20m~. In this way, the fracture surface is controlled to be 5m and the size of the brick is 3m1. The broken cross section and the surface are very close to the sealing material, and the inner surface of the tool is coated with Shantou or noise-removing agent as shown in Figure 12. |tt||7.3.2.3 Use a sand mixer to adjust the water ratio of the slurry to 5~55 with a frequency level of 32.5 or 42.5.7.3.2.4 Place the mold with the carbon sample on the moving table. Add a small amount of water to the carbon sand on the column 3, and move it (electrically). The water-proof mortar caused by the bricks and molds is 0.5-1: close the storage, Before the rental, the mold is placed on the surface of the product according to the two methods of sample preparation in parallel. The sample is only used for the sample preparation. Figure 12 Sample preparation mold and board 7. Sample preparation cost protection 4.1 The test piece is placed in a small non-winding room with a temperature of not less than 1. After the sample is cured for 24 hours, the mold is taken and then placed in the corresponding 7.4. Carry out the test under the condition of curing and expanding 43.? 7.5. Test steps:
/.5. Measure the length and width of each test piece when the joint or the total length is measured, and the half of the mean value is measured, with an accuracy of m: 75. Place the piece flat on the middle of the plate and add more pressure to the surface. If there is no bull rushing out or the maximum vibration, the product will not be damaged. Take effective measures.
7.E Calculation and evaluation of results
The compression resistance of the test joint is calculated by formula 3,
where:
Compression strength. Unit is MPa MI
- maximum slow load, unit is Newton frequency?
The length of the impact surface (continuous surface). Unit is whole meter (m); B
The width of the impact joint is unit is meter (mm). (2
GB/I2542-20 03
7. After the number of stations, the arithmetic mean and standard letter of the compressive strength of the column are expressed as a small question, and the village is confirmed to be .1Ma, 8 freeze-thaw test
instrument and equipment
can be warm or frozen, or a sample box (the indoor temperature can be widened to 12 or below: 8.1.2 water temperature. The water temperature in the protection zone is preferably 10~, A.1.3 teacher, graduation question 5g.
.1. 4 Tropical effect and property of disease: 2uU
8.2 Test day
Test quantity according to product standard requirements.
8.3 Test steps
A.3.1 Use a dry box to dry the test surface until it is dry at 5°C (the time between the two tests is 2 hours and the weight is not more than 1.2% before and after the transfer), weigh its mass and mark the number of test results.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece.2 Samples
The sample is required to determine the product standard, 7.3 Sample preparation
7.3.1 General sample preparation
7.3.1.1 Sintered general brick
a, cut the test bar or help the family in half, the effect of the break shall not be less than 1nr:, as shown in the figure, not 1cm, and the sample is used with the government,
b. On the test platform, put the broken half of the effect into the clean room temperature for 10i~2min and then take it out to open the fracture. The thickness between the two cannot be strong. The operation is generally to compensate for the water system or dispatch 5
B/12542-2003
The appropriate water range is 5
B/12542-2003
The upper and lower sides should not be more than +mm. The upper and lower sides of the hollow bricks must be made in a vertical manner, as shown in Figure 1. The center of the half brick is the height and length of the net material system. The net thickness of the cement slurry layer is shown in Figure 10. 7.3.1.2 The porous brick and hollow brick are made by the production method, that is, the flat surface is prepared by the parts, and the account is as follows, and it must not exceed Use 2.5mm ordinary quality grade 2.5 cement pad to mix into suitable cement net water, and wash the test piece in water for 2umi. Water dripping on the valve wire rack for mir~min, and half of the ground will be changed to water slurry 1 on the positive pin and bed to make a layer of pressure on the surface of the material to break the blood. The ball plate should be thicker than the base. When the big remember, the same plate can be cut and the core can be installed on the glass base. Use a horizontal ruler to control the level of the glass. 7. 3. 1. 3 = non-dense Sa
question, the two halves of the test brick cut corresponding overlap or check the part to get a small "0m", retreat 1 room small. It is the hole music stressed parts, if it is not exactly 10m. The case should be accepted, the unit outside the column is meter
Half monument overlap high diagram
7.3.2 Sample preparation
GB/I2542-203
7.3.2.1 Physical test sheet (sintered general re-transmission plan received two half-air bricks, the general section should be flat, the length of the broken and lower line piece should not be less than IGcmm, as shown in the figure. If less than 1 00mr, take another spare sample to make up for it, 7.3.2.2 Put the broken half into the water purification yard at the original temperature for 20mim~3)vin and take it out, drip water on the wire mesh for 20m~. In this way, the fracture surface is controlled to be 5m and the size of the brick is 3m1. The broken cross section and the surface are very close to the sealing material, and the inner surface of the tool is coated with Shantou or noise-removing agent as shown in Figure 12. |tt||7.3.2.3 Use a sand mixer to adjust the water ratio of the slurry to 5~55 with a frequency level of 32.5 or 42.5.7.3.2.4 Place the mold with the carbon sample on the moving table. Add a small amount of water to the carbon sand on the column 3, and move it (electrically). The water-proof mortar caused by the bricks and molds is 0.5-1: close the storage, Before the rental, the mold is placed on the surface of the product according to the two methods of sample preparation in parallel. The sample is only used for the sample preparation. Figure 12 Sample preparation mold and board 7. Sample preparation cost protection 4.1 The test piece is placed in a small non-winding room with a temperature of not less than 1. After the sample is cured for 24 hours, the mold is taken and then placed in the corresponding 7.4. Carry out the test under the condition of curing and expanding 43.? 7.5. Test steps:
/.5. Measure the length and width of each test piece when the joint or the total length is measured, and the half of the mean value is measured, with an accuracy of m: 75. Place the piece flat on the middle of the plate and add more pressure to the surface. If there is no bull rushing out or the maximum vibration, the product will not be damaged. Take effective measures.
7.E Calculation and evaluation of results
The compression resistance of the test joint is calculated by formula 3,
where:
Compression strength. Unit is MPa MI
- maximum slow load, unit is Newton frequency?
The length of the impact surface (continuous surface). Unit is whole meter (m); B
The width of the impact joint is unit is meter (mm). (2
GB/I2542-20 03
7. After the number of stations, the arithmetic mean and standard letter of the compressive strength of the column are expressed as a small question, and the village is confirmed to be .1Ma, 8 freeze-thaw test
instrument and equipment
can be warm or frozen, or a sample box (the indoor temperature can be widened to 12 or below: 8.1.2 water temperature. The water temperature in the protection zone is preferably 10~, A.1.3 teacher, graduation question 5g.
.1. 4 Tropical effect and property of disease: 2uU
8.2 Test day
Test quantity according to product standard requirements.
8.3 Test steps
A.3.1 Use a dry box to dry the test surface until it is dry at 5°C (the time between the two tests is 2 hours and the weight is not more than 1.2% before and after the transfer), weigh its mass and mark the number of test results.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece., as shown in the figure, it is not 1cm, and the sample is supplemented with the government,
b. On each test platform, put the half-broken effect into the clean room temperature for 10i~2min and then take it out to open the fracture. The thickness between the two cannot be strong. The operation is generally to compensate for the water system or schedule 5
B/12542—2003
appropriate water range. The upper and lower two should not use more than +mm cement slurry. The upper and lower sides of the hollow bricks must be made in a vertical manner, as shown in Figure 1. The center of the half brick is the height and length of the net material system. The net thickness of the cement slurry layer is shown in Figure 10. 7.3.1.2 The porous brick and hollow brick are made by the production method, that is, the flat surface is prepared by the parts, and the account is as follows, and it must not exceed Use 2.5mm ordinary quality grade 2.5 cement pad to mix into suitable cement net water, and wash the test piece in water for 2umi. Water dripping on the valve wire rack for mir~min, and half of the ground will be changed to water slurry 1 on the positive pin and bed to make a layer of pressure on the surface of the material to break the blood. The ball plate should be thicker than the base. When the big remember, the same plate can be cut and the core can be installed on the glass base. Use a horizontal ruler to control the level of the glass. 7. 3. 1. 3 = non-dense Sa
question, the two halves of the test brick cut corresponding overlap or check the part to get a small "0m", retreat 1 room small. It is the hole music stressed parts, if it is not exactly 10m. The case should be accepted, the unit outside the column is meter
Half monument overlap high diagram
7.3.2 Sample preparation
GB/I2542-203
7.3.2.1 Physical test sheet (sintered general re-transmission plan received two half-air bricks, the general section should be flat, the length of the broken and lower line piece should not be less than IGcmm, as shown in the figure. If less than 1 00mr, take another spare sample to make up for it, 7.3.2.2 Put the broken half into the water purification yard at the original temperature for 20mim~3)vin and take it out, drip water on the wire mesh for 20m~. In this way, the fracture surface is controlled to be 5m and the size of the brick is 3m1. The broken cross section and the surface are very close to the sealing material, and the inner surface of the tool is coated with Shantou or noise-removing agent as shown in Figure 12. |tt||7.3.2.3 Use a sand mixer to adjust the water ratio of the slurry to 5~55 with a frequency level of 32.5 or 42.5.7.3.2.4 Place the mold with the carbon sample on the moving table. Add a small amount of water to the carbon sand on the column 3, and move it (electrically). The water-proof mortar caused by the bricks and molds is 0.5-1: close the storage, Before the rental, the mold is placed on the surface of the product according to the two methods of sample preparation in parallel. The sample is only used for the sample preparation. Figure 12 Sample preparation mold and board 7. Sample preparation cost protection 4.1 The test piece is placed in a small non-winding room with a temperature of not less than 1. After the sample is cured for 24 hours, the mold is taken and then placed in the corresponding 7.4. Carry out the test under the condition of curing and expanding 43.? 7.5. Test steps:
/.5. Measure the length and width of each test piece when the joint or the total length is measured, and the half of the mean value is measured, with an accuracy of m: 75. Place the piece flat on the middle of the plate and add more pressure to the surface. If there is no bull rushing out or the maximum vibration, the product will not be damaged. Take effective measures.
7.E Calculation and evaluation of results
The compression resistance of the test joint is calculated by formula 3,
where:
Compression strength. Unit is MPa MI
- maximum slow load, unit is Newton frequency?
The length of the impact surface (continuous surface). Unit is whole meter (m); B
The width of the impact joint is unit is meter (mm). (2
GB/I2542-20 03
7. After the number of stations, the arithmetic mean and standard letter of the compressive strength of the column are expressed as a small question, and the village is confirmed to be .1Ma, 8 freeze-thaw test
instrument and equipment
can be warm or frozen, or a sample box (the indoor temperature can be widened to 12 or below: 8.1.2 water temperature. The water temperature in the protection zone is preferably 10~, A.1.3 teacher, graduation question 5g.
.1. 4 Tropical effect and property of disease: 2uU
8.2 Test day
Test quantity according to product standard requirements.
8.3 Test steps
A.3.1 Use a dry box to dry the test surface until it is dry at 5°C (the time between the two tests is 2 hours and the weight is not more than 1.2% before and after the transfer), weigh its mass and mark the number of test results.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece., as shown in the figure, it is not 1cm, and the sample is supplemented with the government,
b. On each test platform, put the half-broken effect into the clean room temperature for 10i~2min and then take it out to open the fracture. The thickness between the two cannot be strong. The operation is generally to compensate for the water system or schedule 5
B/12542—2003
appropriate water range. The upper and lower two should not use more than +mm cement slurry. The upper and lower sides of the hollow bricks must be made in a vertical manner, as shown in Figure 1. The center of the half brick is the height and length of the net material system. The net thickness of the cement slurry layer is shown in Figure 10. 7.3.1.2 The porous brick and hollow brick are made by the production method, that is, the flat surface is prepared by the parts, and the account is as follows, and it must not exceed Use 2.5mm ordinary quality grade 2.5 cement pad to mix into suitable cement net water, and wash the test piece in water for 2umi. Water dripping on the valve wire rack for mir~min, and half of the ground will be changed to water slurry 1 on the positive pin and bed to make a layer of pressure on the surface of the material to break the blood. The ball plate should be thicker than the base. When the big remember, the same plate can be cut and the core can be installed on the glass base. Use a horizontal ruler to control the level of the glass. 7. 3. 1. 3 = non-dense Sa
question, the two halves of the test brick cut corresponding overlap or check the part to get a small "0m", retreat 1 room small. It is the hole music stressed parts, if it is not exactly 10m. The case should be accepted, the unit outside the column is meter
Half monument overlap high diagram
7.3.2 Sample preparation
GB/I2542-203
7.3.2.1 Physical test sheet (sintered general re-transmission plan received two half-air bricks, the general section should be flat, the length of the broken and lower line piece should not be less than IGcmm, as shown in the figure. If less than 1 00mr, take another spare sample to make up for it, 7.3.2.2 Put the broken half into the water purification yard at the original temperature for 20mim~3)vin and take it out, drip water on the wire mesh for 20m~. In this way, the fracture surface is controlled to be 5m and the size of the brick is 3m1. The broken cross section and the surface are very close to the sealing material, and the inner surface of the tool is coated with Shantou or noise-removing agent as shown in Figure 12. |tt||7.3.2.3 Use a sand mixer to adjust the water ratio of the slurry to 5~55 with a frequency level of 32.5 or 42.5.7.3.2.4 Place the mold with the carbon sample on the moving table. Add a small amount of water to the carbon sand on the column 3, and move it (electrically). The water-proof mortar caused by the bricks and molds is 0.5-1: close the storage, Before the rental, the mold is placed on the surface of the product according to the two methods of sample preparation in parallel. The sample is only used for the sample preparation. Figure 12 Sample preparation mold and board 7. Sample preparation cost protection 4.1 The test piece is placed in a small non-winding room with a temperature of not less than 1. After the sample is cured for 24 hours, the mold is taken and then placed in the corresponding 7.4. Carry out the test under the condition of curing and expanding 43.? 7.5. Test steps:
/.5. Measure the length and width of each test piece when the joint or the total length is measured, and the half of the mean value is measured, with an accuracy of m: 75. Place the piece flat on the middle of the plate and add more pressure to the surface. If there is no bull rushing out or the maximum vibration, the product will not be damaged. Take effective measures.
7.E Calculation and evaluation of results
The compression resistance of the test joint is calculated by formula 3,
where:
Compression strength. Unit is MPa MI
- maximum slow load, unit is Newton frequency?
The length of the impact surface (continuous surface). Unit is whole meter (m); B
The width of the impact joint is unit is meter (mm). (2
GB/I2542-20 03
7. After the number of stations, the arithmetic mean and standard letter of the compressive strength of the column are expressed as a small question, and the village is confirmed to be .1Ma, 8 freeze-thaw test
instrument and equipment
can be warm or frozen, or a sample box (the indoor temperature can be widened to 12 or below: 8.1.2 water temperature. The water temperature in the protection zone is preferably 10~, A.1.3 teacher, graduation question 5g.
.1. 4 Tropical effect and property of disease: 2uU
8.2 Test day
Test quantity according to product standard requirements.
8.3 Test steps
A.3.1 Use a dry box to dry the test surface until it is dry at 5°C (the time between the two tests is 2 hours and the weight is not more than 1.2% before and after the transfer), weigh its mass and mark the number of test results.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece.2 Sample preparation
GB/I2542-203
7.3.2.1 Physical test sheet (sintering general re-transmission plan for the two half-air bricks, the general cross-section should be flat, the length of the broken line piece should not be less than 100mm, as shown in the figure. If it is less than 100mm, the industry will take another spare sample to make up for it. 7.3.2.2 Put the broken half into the water purification center at normal temperature for 20min~3)vin Take it out, drip water on the wire mesh for 20m~with the fracture similar to this installation, the extremely controlled two and a half micro-space is 5m and the brick size is 3m1, the broken section, the top surface and the extremely spaced interval can be raised to teach or other sealing materials, the inner surface of the tool is coated with Shan or noise reduction agent and the single-carry tool is as shown in Figure 12
7.3.2.3 The primary foundation 2 of the wire mesh is 1--with a frequency level of 32.5 or 42.5. Use sand mixer to adjust the acid water slurry ratio to 5~55.7.3.2.4 Place the mold with carbon sample on the dispatching table. Distribute a small amount of water to the carbon sand in the column. Report the amount of water. Report the bricks and mold breaking caused by the mortar. Add slurry and record the movement. Note: 0.5--1: Before use, the mold will be flat on the surface according to the two methods of sample preparation in 7.3.2.5. Figure 12
Sample making mold and slab
7. Sample maintenance
4.1 The test piece of the ordinary push-pull bed is placed in a small non-winding room with a vertical wind of not less than 1. After curing for 24 hours, the mold is taken and then cured under the opposite conditions. 43. Test 7.4.? The aging parts do not need to be maintained Test according to: 7.5 Test steps: 1. Measure the length and width of each test piece under the ruler, and find the half average value, accuracy: 75. Place the test piece flat on the middle of the plate and press it on the compressive surface. Make sure there is no impact or vibration. Stop until the test is completed. 2. Calculate and evaluate the results: 3. Calculate the car 3,
where:
anti-strength. Unit is MPa MI
-maximum slow load, unit is Newton frequency?
the length of the impact surface (continuous surface). Unit is whole meter (m); B
the width of the impact surface is unit is meter (mm). (2
GB/I2542-2003
7. After the core. 2 The station adopts the arithmetic mean and standard single block degree of compressive strength of the column to express the small question, the village is confirmed to be .1Ma, 8 freeze-thaw test
instrument and equipment
can be kept at a temperature of 5g or below, or a sample box (the indoor temperature can be widened to a 2 or below: 8.1.2 Water according to. The water temperature in the protection zone is preferably 10~, A.1.3 table teacher, graduation question 5g.
.1.4 Tropical effect ten trap: ground disease safety 2uU
8.2 Sample day
method sample quantity product standard requirements to determine.
8.3 Test steps
A.3.1 Use a reasonable surface to dry the test box for 5 hours: dry to below 10 (the two weighings before and after the transfer test time is 1.2% before and after the two weighings are not more than 2), weigh its quality formula and test the outside death will be marked with the quick calculation plan number.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece.2 Sample preparation
GB/I2542-203
7.3.2.1 Physical test sheet (sintering general re-transmission plan for the two half-air bricks, the general cross-section should be flat, the length of the broken line piece should not be less than 100mm, as shown in the figure. If it is less than 100mm, the industry will take another spare sample to make up for it. 7.3.2.2 Put the broken half into the water purification center at normal temperature for 20min~3)vin Take it out, drip water on the wire mesh for 20m~with the fracture similar to this installation, the extremely controlled two and a half micro-space is 5m and the brick size is 3m1, the broken section, the top surface and the extremely spaced interval can be raised to teach or other sealing materials, the inner surface of the tool is coated with Shan or noise reduction agent and the single-carry tool is as shown in Figure 12
7.3.2.3 The primary foundation 2 of the wire mesh is 1--with a frequency level of 32.5 or 42.5. Use sand mixer to adjust the acid water slurry ratio to 5~55.7.3.2.4 Place the mold with carbon sample on the dispatching table. Distribute a small amount of water to the carbon sand in the column. Report the amount of water. Report the bricks and mold breaking caused by the mortar. Add slurry and record the movement. Note: 0.5--1: Before use, the mold will be flat on the surface according to the two methods of sample preparation in 7.3.2.5. Figure 12
Sample making mold and slab
7. Sample maintenance
4.1 The test piece of the ordinary push-pull bed is placed in a small non-winding room with a vertical wind of not less than 1. After curing for 24 hours, the mold is taken and then cured under the opposite conditions. 43. Test 7.4.? The aging parts do not need to be maintained Test according to: 7.5 Test steps: 1. Measure the length and width of each test piece under the ruler, and find the half average value, accuracy: 75. Place the test piece flat on the middle of the plate and press it on the compressive surface. Make sure there is no impact or vibration. Stop until the test is completed. 2. Calculate and evaluate the results: 3. Calculate the car 3,
where:
anti-strength. Unit is MPa MI
-maximum slow load, unit is Newton frequency?
the length of the impact surface (continuous surface). Unit is whole meter (m); B
the width of the impact surface is unit is meter (mm). (2
GB/I2542-2003
7. After the core. 2 The station adopts the arithmetic mean and standard single block degree of compressive strength of the column to express the small question, the village is confirmed to be .1Ma, 8 freeze-thaw test
instrument and equipment
can be kept at a temperature of 5g or below, or a sample box (the indoor temperature can be widened to a 2 or below: 8.1.2 Water according to. The water temperature in the protection zone is preferably 10~, A.1.3 table teacher, graduation question 5g.
.1.4 Tropical effect ten trap: ground disease safety 2uU
8.2 Sample day
method sample quantity product standard requirements to determine.
8.3 Test steps
A.3.1 Use a reasonable surface to dry the test box for 5 hours: dry to below 10 (the two weighings before and after the transfer test time is 1.2% before and after the two weighings are not more than 2), weigh its quality formula and test the outside death will be marked with the quick calculation plan number.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece.4 Tropical effect and property of disease: 2uU
8.2 Test day
Test quantity according to product standard requirements.
8.3 Test steps
A.3.1 Use a dry box to dry the test surface until it is dry at 5°C (the time between the two tests is 2 hours and the weight is not more than 1.2% before and after the transfer), weigh its mass and mark the number of test results.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4.1 Performance conclusion: After 5 freezing cycles, check the well record the sample is in the process of bearing the freezing crack length, the core drop and other damage flow,
Strong loss head (Calculated according to 3, accurate to 0.1
Rong Zhong!
Strong pursuit of benefits Taixue,
one test, unit is MP
one sample bed touch breeding seat, medium is MP (5.4.3 mass rate (. Calculate according to formula 1 and be accurate to 3.%, fi
In this text:
mass loss, % on
freeze-thaw amount, unit is g
—specimen source with dry mass, unit is standard).
GB/T 2E42—2003
date, 4.4 Test results shall be expressed and specified in detail in terms of compression resistance, point resistance, and loss of quality or single quality. 3 Density test
9.1 Receiver equipment
9.1.1 Drying box:
9.1.2 Scale, the scale value is >.
9.1.3 Steel scale. The scale value is 1mm. Small scale can be used, the scale value is! mm. 9.2 Test specimen
Test specimen quality requirements of the product are accurate, the appearance of the sample taken is complete, 9.3 Test steps
9. 3.2 Dry the sample in accordance with the provisions of Article 12, measure its length, width and height, and take the average value. 9.4 Result calculation and evaluation
3.4.: The volume of the test piece is the same as that of the test piece.4 Tropical effect and property of disease: 2uU
8.2 Test day
Test quantity according to product standard requirements.
8.3 Test steps
A.3.1 Use a dry box to dry the test surface until it is dry at 5°C (the time between the two tests is 2 hours and the weight is not more than 1.2% before and after the transfer), weigh its mass and mark the number of test results.
8.3.2 After the sample is dried for 10-2 hours, take it out and wipe off the water on the surface with a cloth, then put it in a freezer for 3 hours. 8.3.3 When the temperature drops to 13-15 hours, place it in a freezer for 3 times. Then take it out and put it in a freezer for 10 hours. The freezing and thawing cycle is not less than 2 cycles, and the thawing cycle is not less than 5 cycles. 8.35 During the freeze-thaw process, the test shall not exceed the specified limit, and the test shall be continued for 15 times to win the ring strength test. B.3.615 times, and the length of the frozen cracks and the length of the broken pieces shall be recorded during the freeze-thaw process. 8.3. After one freeze-thaw cycle, the pieces shall be placed in a box and dried according to the observation of 3.3.1 until the quality is verified. If the source of the damage is found, the test may be omitted. ! Dry weighing, 8.3. The damaged sample! Non-burning station code in 3 ~ 20 water ten hold 2 ten hold 5.5 bearing the provisions of the sea resistance test.
8.3.9 Consult the micro-stream of the Banglong product cup standard requirements for the total part of the test, 8.4: Result calculation and evaluation
8.4
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