Some standard content:
GB1B242--2000
Article 3.3 of this standard and items 1 to 3 in Table 3 are mandatory, and the rest are recommended. This standard adopts the relevant parts of DIN52132:1996 "Polymer bitumen roofing waterproofing membrane", and refers to the American Society for Testing and Materials ASTMD6163:1997 Glass fiber felt reinforced styrene-butadiene-styrene (SES modified bitumen membrane), ASTMD6164:1997 Polyester felt reinforced styrene-butadiene-styrene (SBS) modified bitumen membrane, and formulates the soluble content, impermeability, heat resistance, tension, elongation, low In order to ensure the durability of the membrane and waterproof layer, the technical indicators of artificial climate accelerated aging are added to the technical requirements. Most of the technical indicators promoted in this standard are consistent with the DIN52132:1996 standard indicators. Compared with JC/T560-1994 Elastomer Asphalt Waterproof Membrane, this standard cancels the product classification, divides the products into types, adds tear strength and artificial climate accelerated aging, and adjusts the technical requirements and test methods. From the date of implementation of this standard, J C/T560-1994 Elastomer asphalt waterproofing membrane is invalid. This standard is proposed by the National Mongolian Building Materials Industry Bureau: This standard is under the jurisdiction of the National Lightweight and Decorative Building Materials Standardization Technical Committee. The responsible drafting units of this standard are: China Building Waterproof Materials Industry Association. National Building Materials Industry Bureau Standardization Institute, China Chemical Building Materials Company Suzhou Waterproof Materials Research and Design Institute. Participating drafting units of this standard: Beijing Oakland Building Waterproof Materials Co., Ltd., Panjin Yuwang Waterproof Building Materials Group Co., Ltd., Yizhong (Qingdao) Chemical Building Materials Co., Ltd., Chongqing New Waterproof Materials Co., Ltd., Xuzhou Woniushan New Waterproof Materials Co., Ltd., Baoding North Waterproof Engineering Company, Wenzhou Great Wall Waterproof Materials Factory, Shenyang Languang New Waterproof Materials Co., Ltd., Changchun Construction Waterproof Materials Co., Ltd., Shanghai Jinxia Building Materials Co., Ltd., Baoding Petrochemical Plant Waterproof Materials Branch, Zigong Roofing Felt Factory, Johns Manville (Shanghai) Nonwoven Fabrics Co., Ltd., Changzhou Schuler Zhongxin Tianma Fiberglass Products Co., Ltd., Hunan Nonwoven Fabrics Factory Nuclear Industry). The main drafters of this standard are Zhang Shupei, Yang Bin, Zhu Zhiyuan, Tu Cuifen, Zhan Fumin, Zhang Shengyuan, Jin Liping and Liu Huandi. 1 Scope
National Standard of the People's Republic of China
Elastomer modified bituminous waterproofing membrane
Styrene butadiene styrene (SBS)modified bituminous sheet materialsiiKAoNhiKAca-
GB 18242-2000
This standard specifies the classification, technical requirements, test methods, inspection rules, packaging marks, storage and transportation of elastomer modified bituminous waterproofing membrane.
This standard applies to building waterproofing membranes made of polyester felt or glass fiber felt as base, styrene-butadiene-styrene (SBS) thermoplastic elastomer as modifier, and insulation materials on both sides (referred to as "SBS membranes"). This standard does not apply to asphalt waterproofing membranes made of other modified asphalt, base and upper surface materials. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T328.3-19B9 Test method for asphalt waterproofing membranes Impermeability GB/T328.5-1989 Test method for asphalt waterproofing membranes Heat resistance GB/T18244-2000 Test method for aging of building waterproofing materials 3 Classification
3.1 Type
3. 1.1 According to the base material, it can be divided into two categories: polyester base (PY) and glass fiber base (G). 3.1.2 According to the upper surface isolation material, it can be divided into three types: polyethylene film (PE), fine sand (S) and mineral particles (sheets) (M). 3.1.3 According to the physical and mechanical properties, it can be divided into Type 1 and Type I. 3.1.4 The roll materials can be divided into six varieties according to different base materials and different upper surface materials, see Table 1. Table 1. Roll material varieties
Upper surface material
Polyethylene film
Mineral particles (sheets) material
3.2 Specifications
3.2.1 Width
1000mm
3.2.2 Thickness
Polyester base roll material
Glass fiber roll material
3 mm and 4 mm
2 mm, 3 mm and 4 mm.
State Administration of Quality and Technical Supervision approved on October 27, 2000 Polyester
Glass fiber base
2001-05-01 implementation
GB 18242-200D
3.2.3 Area Each roll area is divided into 15 m2, 10 m2 and 7.5 m. 3.3 Marking
3.3.1 Marking method
The roll material shall be marked in the following order:
Elastomer modified bitumen waterproofing roll material, model, base material, upper surface material, thickness and this standard number 3.3.2 Marking example
3mm thick sand surface polyester base type 1 elastomer modified asphalt waterproofing roll material is marked as: SBS I PY S3GB18242
3.4 Application
SBS rolls are suitable for industrial and civil building roofs and underground waterproofing projects, especially for building waterproofing in low temperature environments. 4 Technical requirements
4.1 Roll weight, area and thickness
Roll weight, area and thickness shall comply with the provisions of Table 2, Table 2 Roll weight, area and thickness
Specifications (nominal thickness), mm
Upper surface material
4.2 Appearance
Nominal area
Minimum roll weight, kg/
Average value,
Minimum single value
4.2.1 The rolled rolls shall be rolled tightly and evenly, and the end face shall not exceed 10mm inward and outward. 4.2.2 When the rolled rolls are unrolled at any product temperature of 450C, there shall be no cracks or adhesions of more than 10mm outside the length of 1000mm from the roll core.
4.2.3 The base should be soaked, and there should be no unsoaked stripes. 4.2.4 The surface of the coil must be flat, without holes, missing edges and cracks. The particle size of the mineral particles (sheets) should be uniform and tightly adhered to the surface of the coil.
4.2.5 There should be no more than one joint per roll, and the shorter section should not be less than 1000mm. The joint should be cut neatly and extended by 150mm. 4.3 Physical and mechanical properties
The physical and mechanical properties should comply with the requirements of Table 3.
Table 3 Physical and mechanical properties
Soluble content
Water impermeability
Pressure.MPa
Holding time,min2
Heat resistance,℃
Tensile force N/50mm
Elongation at maximum tensile force,%
Low temperature,℃
Tear strength,N
Artificial climate
Accelerated aging
Tensile retention rate
GB1B242--2000
Table 3 (end)
Low temperature, it
Note: Items 1 to 6 in the table are mandatory items
5Test methods
5. 1 Volume, Area and Thickness
5.1.1 Volume Weight
Use a platform scale with a minimum scale value of 0.2 kg to weigh the mass of each volume. 5-1.2 Area
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No slip, flow, drip
No slip, flow, drip
No crack
Use a tape measure with a minimum scale value of 1 mm to measure the width and length at three locations at both ends and the middle of the volume, and calculate the area of each volume by multiplying the length by the average value of the width. If there is a joint, calculate it by subtracting 150 mm from the sum of the lengths of the two ends. When the area exceeds the positive deviation specified in the standard, calculate its volume weight according to the nominal area. When it meets the minimum volume weight requirement, it is also judged to be qualified. 5.1.3 Thickness
Use a thickness gauge with a contact surface of 10 mm diameter, a pressure per unit area of 0.02 MPa, and a graduation value of 0.01 tmm for measurement, and hold time of 5 s.Cut a 50mm wide coil (50mm×1000mm) along the width direction of the coil, measure 5 points in the width direction, take one point 150mm±15mm inward from the length edge of the coil, and divide the remaining 3 points equally between the two points. The sand surface coil must be cleared of floating sand before measurement, and the measured value is recorded. Calculate the average value of the 5 points as the thickness of the coil. The total average value of the thickness of the coil of the number of coils sampled is used as the thickness of the batch of products, and the minimum single value is reported. 5-2 Appearance
Put the coil upright on a plane, place a steel ruler flat on the end face of the coil, and use another steel ruler with a minimum division value of 1nm to vertically extend into the most concave part of the end face of the coil. The measured value is the in-out value of the end face of the coil. Then unfold the coil and inspect it according to the appearance quality requirements. Cut a 50mm wide strip along the width direction, and there should be no unsoaked stripes in the tire base. 5.3 Physical and mechanical properties
5.3.1 Test pieces
GB 1B242—2000
After cutting the sampled coil 2500mm away from the outer coil head, cut two full-width coil samples with a length of 8001mm in the longitudinal direction, one for physical and mechanical properties testing and the other for standby. Cut the test pieces according to the location shown in Figure 1 and the size and quantity specified in Table 4. The distance between the edge of the test piece and the longitudinal edge of the coil is not less than 75 mm.
Artificial climate accelerated anti-aging performance test pieces are cut according to GB/T18244. Take 2 groups in total. One group is used for aging test; the other group is used as comparison test pieces and the performance is measured under standard conditions. Table 4 Specimen size and quantity
Test items
Fallable matter content
Tensile force and elongation
Water impermeabilitywwW.bzxz.Net
Heat resistance
Low temperature resistance
Tear strength
5.3.2 Soluble matter content
5.3.2.1 Solvent
Specimen code
Carbon tetrachloride, chloroform, or trinitroethylene, industrial or chemical pure. 5.3.2.2 Test equipment
Analytical balance; sensitivity 0.001g.
Extractor: 500ml. Soxhlet extractor,
Electric drying oven: temperature range 0~300℃, accuracy ±2℃. Filter paper: diameter not less than 150mm.
Test piece size, mm
100×100
250×50
150×150
100×50
150×25
200X75
Horizontal 1000
Fig.丨Test piece cutting diagram
Quantity, pieces
5 in vertical and horizontal directions
5 in vertical and horizontal directions
5. 3. 2.3 Test procedures
GB18242—2000
The three test pieces (A) cut according to 5.3.1 are wrapped with filter paper and tied with cotton thread, and then weighed separately. -iiKAoNniKAca-
Put the filter paper bag in the extractor, and heat the extraction with the solvent amount of 1/2~2/3 of the flask capacity until the reflux solvent is light-colored, take out the filter paper bag, and let the adsorbed solvent evaporate first. Put it in an electric drying oven preheated to 105~110℃ and dry it for 1h, then put it in the dryer and cool it to room temperature, weigh the filter paper bag,
5.3.2.4 Calculate
The soluble content is calculated according to formula (1)
A = K(G - P)
Where: A——soluble content?g/m2;
K—coefficient, K=100,1/m,
G—weight of filter paper bag before extraction·g1
P—weight of filter paper bag after extraction, g.
The arithmetic mean of the soluble content of the three specimens is taken as the soluble content of the coil. 5.3.3 Tensile force and elongation at maximum tensile force
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5.3.3.1 Tensile testing machine: capable of measuring tension and elongation simultaneously, with a force range of 0~2000N, a minimum division value of no more than 5N, an elongation range that can extend the clamp spacing (180mm) by 1 times, and a clamp clamping width of no less than 50mm. 5.3.3.2 Test temperature: 23℃±2℃. 5.3.3.3 Test steps
Put the specimen (B, B'> cut according to 5.3.1 at the test temperature for no less than 24h. Calibrate the test machine, with a tensile speed of 50mm/min, clamp the specimen in the center of the clamp, without twisting, and a distance of 180 between the upper and lower clamps. mm
Start the testing machine until the specimen is broken, and record the maximum tension and elongation at the maximum tension. 5.3.3.4 Calculation
Calculate the arithmetic mean of the tension of the five specimens in the longitudinal or transverse direction as the longitudinal or transverse tension of the coil, in N/50mm. The elongation is calculated according to formula (2):
E = 100(L, - L)/L
Where: E——elongation at maximum tension, %; L—gauge length of the specimen at maximum tension, m
Lu..initial gauge length of the specimen, mm;
1—distance between clamps, 180 mm.
Calculate the arithmetic mean of the elongation of the five longitudinal or transverse specimens at the maximum tensile force as the longitudinal or transverse elongation of the coil. 5.3.4 Waterproofness
Waterproofness shall be carried out in accordance with GB/T328.3. The upper surface of the coil shall be the water-facing surface. When the upper surface is sand or mineral granular material, the lower surface shall be the water-facing surface. When the lower surface material is fine sand, remove the floating sand on the fine sand surface along the sealing ring, and then apply a circle of 60-100 hot asphalt, apply it evenly and wait for cooling for 1 h later, test the impermeability. 5.3.5 Heat resistance
The heat resistance shall be carried out in accordance with GB/T328.5. After heating for 2h, observe and record whether the coating layer of the specimen has slipped, flowed or dripped. The coating layer at either end should not be displaced from the tire base, and the lower end of the specimen should be flush with the tire base, without sagging or dripping. 5.3.6 Low temperature flexibility
5.3.6.1 Test apparatus
Low temperature refrigerator: range 0~-30℃, temperature control accuracy ±2℃. Semiconductor thermometer: range 30~-40℃, accuracy 0.5℃. Flexibility rod or bending plate: radius () 15mm, 25mm, the schematic diagram of the bending plate is shown in Figure 2. GB 18242—2000
Figure 2 Schematic diagram of bending plate
Freezing liquid: liquid that does not react with coiled materials, such as vehicle antifreeze, polyols, polyethers, 5.3.6.2 Test method
Method A (arbitration method) Place freezing liquid (more than 6 L) in a container not less than 10 L, place the container in a low-temperature refrigerator, and cool it to the temperature specified in the standard. Then place the test piece and the flexibility rod (plate) in the liquid at the same time, and keep it for at least 0.5 h after the temperature reaches the temperature specified in the standard. At the temperature specified in the standard, bend the test piece in the liquid at a constant speed of 35 around the flexibility rod (plate) 180 degrees. Method B Place the test piece and the flexibility (plate) in a low-temperature refrigerator cooled to the temperature specified in the standard at the same time, and keep it for at least 2 h after the temperature reaches the temperature specified in the standard. At the temperature specified in the standard, bend the test piece in the low-temperature refrigerator at a constant speed of 3 s around the flexibility rod (plate) 180 degrees.
5.3.6.3 Test steps
2mm, 3mm coils use a 15mm radius (r) flexibility rod (plate), 4mm coils use a 25mm radius (). Among the 6 specimens, the lower surfaces of 3 specimens and the upper surfaces of the other 3 specimens are in contact with the flexibility rod (plate). Take out the specimens and observe with the naked eye. Check whether there are cracks in the coating layer of the specimens.
5.3.7 Tear strength
5.3.7.1 Tensile testing machine: Same as 5.3.3.1, the clamping width of the clamp is not less than 75mm. 5.3.7.2 Test temperature: 23℃±2℃, 5.3.7.3 Test steps
Use a cutter or a mold to cut the specimens (F, F\) cut according to 5.3.1 into the shape shown in Figure 3, and then place them at the test temperature for not less than 24 hours.
Figure 3 Tearing specimen
GB18242—2000
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Calibrate the testing machine, tensile speed 50mm/min, clamp the specimen in the center of the fixture, no twisting, the distance between the upper and lower fixtures is 130mm
Start the testing machine until the specimen is broken, and record the maximum tensile force. 5.3.7.4 Calculation
Calculate the arithmetic mean of the tensile forces of 5 specimens in the longitudinal or transverse direction as the longitudinal or transverse tear strength of the coil, unit N5.3.8 Artificial climate accelerated aging
According to GB/T18244, the xenon light method is used, and the test time is 720h (the cumulative radiated energy is about 1500MJ/m). After aging, check the appearance of the specimen, measure the longitudinal tensile force and low temperature temperature, and calculate the longitudinal tensile force retention rate. 6 Inspection rules
6.1 Inspection classification is divided into factory inspection and type inspection. Factory inspection items include: roll weight, area, thickness, appearance, impermeability, heat resistance, tension. Elongation at maximum tension, low temperature temperature. Type inspection items include all the provisions in the technical requirements. 6.2 Type inspection is carried out in the following cases: a) When a new product is put into production or the product is finalized; b) During normal production, it is carried out every six months. Artificial climate accelerated aging is carried out every two years: c) When there are major changes in raw materials, processes, etc., which may affect product quality; d) When there is a big difference between the factory inspection results and the last type inspection results; e) When the product is resumed after 6 months of suspension; f) When the national quality supervision and inspection agency puts forward type inspection requirements. 6.3 Batch
A batch of 10,000 m2 of the same type and specification can also be regarded as a batch when it is less than 10,000 m2. 6.4 Sampling
Randomly select 5 rolls from each batch of products for roll weight, area, thickness and appearance inspection. 6.5 Judgment rules
6.5.1 Coil weight, area, thickness and appearance When the above inspection results of the 5 sample rolls meet the requirements of 4.1 and 4.2, the weight, area, thickness and appearance of the rolls are judged to be qualified. If one of the items does not meet the requirements, it is allowed to take another 5 rolls from the batch of products to re-check the unqualified items. If all meet the requirements of the standard, it is judged to be qualified. If it still does not meet the standards, the batch of products is judged to be unqualified. 6.5.2 Physical and mechanical properties
6.5.2.1 Sampling Randomly select 1 roll from the rolls that meet the requirements of the weight, area, thickness and appearance to conduct physical and mechanical properties tests. 6. 5- 2. 2 Judgment is
When the average value of the test results of soluble content, tension, elongation at maximum tension, and tear strength reaches the standard specified indicators, it is judged to be qualified for this indicator.
For water impermeability and heat resistance, when each group of 3 test pieces reaches the standard specified indicators, it is judged to be qualified for this indicator. When at least 5 of the 6 test pieces of low temperature temperature meet the standard indicators, the indicator is judged to be qualified. Type machine inspection and arbitration inspection must adopt method A.
When the test results of artificial climate accelerated aging meet the requirements of Table 3, the indicator is judged to be qualified. If all test results meet the requirements of Table 3, the physical and mechanical properties of this batch of products are judged to be qualified. If one indicator does not meet the requirements of the standard, it is allowed to randomly select 5 rolls from the batch of products, and randomly select 1 roll from them for single re-inspection of the unqualified items. When it meets the requirements of the standard, the batch of products is judged to be qualified.
6. 5. 3 Overall judgment
When the roll weight, area, thickness, appearance and physical and mechanical properties meet all the technical requirements of the standard, and the packaging and marking meet the requirements of 7.1 and 7.2, the batch of products is judged to be qualified. 7 Packaging, marking, storage and transportation
GB1B242—2000
7.1 Packaging coils can be packed in paper or plastic tape. When paper is packed, it should be packed in full cylinder, and the total length of the unpacked cylinder at both ends should not exceed 100mm.
7.2 Marking
a) Manufacturer name:
b) Trademark;
c) Product mark,
d) Production date or batch number:
e) Production license number;
f) Storage and transportation precautions.
7. 3 Storage and transportation
.3.1 During storage and transportation, products of different types and specifications should be stacked separately and should not be mixed. Avoid sun and rain, and pay attention to ventilation. The storage temperature should not be higher than 50℃, and the storage should be upright, with a height of no more than two layers. 7.3.2 When transported by ship or train, the coils must be placed upright, with a stacking height of no more than two layers. Prevent tilting or horizontal pressure, and cover with bitter cloth if necessary.
7.3.3 Under normal storage and transportation conditions, the storage period is one year from the date of production.
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