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GB/T 3183-2003 Masonry cement

Basic Information

Standard ID: GB/T 3183-2003

Standard Name: Masonry cement

Chinese Name: 砌筑水泥

Standard category:National Standard (GB)

state:in force

Date of Release2003-05-22

Date of Implementation:2004-01-01

standard classification number

Standard ICS number:Building materials and buildings>>Building materials>>91.100.10 Cement, gypsum, lime, mortar

Standard Classification Number:Building Materials>>Building Materials Products>>Q11 Cement

associated standards

alternative situation:GB/T 3183-1997

Procurement status:BS 5224-1995,NEQ BS EN 413-2-1995,NEQ

Publication information

publishing house:China Standards Press

ISBN:155066.1-19695

Publication date:2003-05-22

other information

Release date:1982-09-14

Review date:2004-10-14

drafter:Wong Jing, Sui Tongbo, Shen Weizhong, Wen Zhaijun, Ma Yadong, Zhang Zhonglun, Fang Derui, Li Guochang, Jia Baosheng, Chen Zongwu, Guan Ying

Drafting unit:China Building Materials Science Research Institute, National Building Materials Industry Bureau Standardization Institute

Focal point unit:National Cement Standardization Committee

Proposing unit:China Building Materials Industry Association

Publishing department:General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

competent authority:China Building Materials Industry Association

Introduction to standards:

This standard specifies the definition, requirements, test methods and rules of masonry cement. This standard applies to masonry cement. GB/T 3183-2003 Masonry cement GB/T3183-2003 Standard download decompression password: www.bzxz.net

Some standard content:

ICS91.100.10
National Standard of the People's Republic of China
GB/T3183—2003
Replaces GB/T3183-1997
Issued on 2003-05-22
Masonry cement
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implemented on 2004-01-01
GB/T3183--2003
This standard refers to BS5224:1995 "Masonry cement standard" and BSEN413-2:1995 "Masonry cement 2. Test methods".
This standard replaces GB/T3183-1997 "Masonry cement". Compared with the original GB/T3183-1997, the main changes of this standard are as follows: - The cement strength test method is replaced by GB/T17671-1999 "Test Method for Cement Mortar Strength (ISO Method)" instead of GB/T177-1985 "Test Method for Cement Mortar Strength" (1997 Edition 7.6, this edition 8.5); - The cement grade is changed to strength grade (1997 Edition Chapter 5; this edition Chapter 6); - Water seepage and test method are changed to water retention and test method (1997 Edition 6.6 and Appendix A; this edition 8.4 and Appendix A); - The fluidity index is cancelled (1997 Edition 6.5), - The requirements for silicate cement clinker are added (this edition 5.5). Appendix A of this standard is a normative appendix.
This standard is proposed by China Building Materials Industry Association. This standard is under the jurisdiction of the National Cement Standardization Committee. The responsible drafting units of this standard are: China Building Materials Science Research Institute, Standardization Institute of State Building Materials Industry Bureau, Cement Quality Supervision and Inspection Center of Ministry of Agriculture, and Local Cement Quality Supervision and Inspection Station of Zhejiang Province. The participating drafting units of this standard are: Tonghua Special Cement Co., Ltd., Shandong Zibo Qiyin Cement Co., Ltd., Beijing Pinggu County Cement Plant No. 2, Heilongjiang Shangzhi Jinshi Cement Co., Ltd., Zhejiang Tongxing Cement Co., Ltd., Zhejiang Jiangshan Hejiashan Cement Co., Ltd., Zhejiang Lima Co., Ltd., Zhejiang Xingge Building Materials Co., Ltd., Beijing Fangshan Jiwen Cement Plant, Beijing Shunyi Special Cement Plant. The main drafters of this standard are: Wang Jing, Sui Tongbo, Shen Weizhong, Wen Zhaijun, Ma Hengdong, Zhang Zhonglun, Fang Derui, Li Guochang, Jia Baosheng, Chen Zongwu, Guan Ying.
This standard was first issued in 1982 and revised for the first time in 1997. 1 Scope
This standard specifies the definition, requirements, test methods and inspection rules of masonry cement. This standard applies to masonry cement.
2 Normative references
GB/T3183-2003
The clauses in the following documents become the clauses of this standard through reference in this standard. For all referenced documents with dates, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all referenced documents without dates, the latest versions are applicable to this standard. GB/T176 Chemical analysis method for cement (GB/T176-1996, eqvISO680:1990) GB/T203 Granulated blast furnace slag for cement GB/T1345 Cement fineness test method (80um sieve analysis method) GB/T1346
GB/T1596
GB/T2419
GB/T2847
GB/T5483
GB/T6645
Test method for water consumption, setting time and stability of cement standard consistency (GB/T1346-2001eqvISO9597: Fly ash for cement and concrete
Method for determination of fluidity of cement mortar
For cement Pozzolanic mixed materials gypsum and anhydrite (eqvISO1587:1975) Granulated electric furnace phosphorus slag used in cement
GB9774 Cement packaging bag
GB12573 Cement sampling method
GB12958-1999 Composite silicate cement
GB/T17671-1999 Cement mortar strength test method (ISO method) (idtISO679:1989)JC/T417 Granulated ferrochrome slag used in cementJC/T418 Granulated blast furnace titanium slag used in cementJC/T454 Granulated calcium-enhanced liquid slag used in cementJC/T667 Process admixtures for cement grinding
JC/T742
Rotary kiln kiln added to cement Ash
Silicate cement clinker
JC/T853
YB/T022 Steel slag used in cement
3 Definition and code
Any hydraulic cementitious material with good workability made by grinding one or more cement mixed materials, adding appropriate amount of silicate cement clinker and stone sleeve is called extreme cement, code M. 4 Use
Masonry cement is mainly used for masonry and facing mortar, cushion concrete, etc., and should not be used for structural concrete. 5 Composition and materials
5.1 Composition
GB/T3t83—2003
The amount of mixed materials added to cement should be greater than 50% by mass, and an appropriate amount of limestone or kiln dust can be added. 5.2 Cement mixed materials| |tt||refers to the mixed materials specified in GB/T203, GB/T1596, GB/T2847, GB/T6645, JC/T417, JC/T418, JC/T454, JC/T742 and YB/T022 and the newly developed active mixed materials according to the requirements of Appendix A of GB12958-1999. The aluminum oxide in limestone shall not exceed 2.5%. 5.3 Gypsum
shall comply with the provisions of GB/T5483.
5.4 Kiln dust
shall comply with the provisions of JC/T742.
5.5 Grinding aids
Grinding aids are allowed to be added when grinding cement. The amount added shall not exceed 1% of the cement mass. Grinding aids shall comply with the provisions of JC/T667. 5.6 Clinker
Should comply with the provisions of JC/T853,
6 Strength grade
Masonry cement is divided into two strength grades: 12.5 and 22.5. 7 Requirements
7.1 Sulfur trioxide
The sulfur trioxide content in cement should not exceed 4.0%. 7.2 Fineness
The residue on the 80μm square hole sieve should not exceed 10.0%. 7.3 Setting time
The initial setting should not be earlier than 60min, and the final setting should not be later than 12h. 7.4 Stability
It should be qualified when tested by boiling method.
7.5 Water retention
The water retention should not be less than 80%.
7.6 Strength
The strength of each grade of cement at each age should not be less than the value in Table 1. Table 1
Cement grade
8 Test method
8.1 Sulfur trioxide
According to GB/T176.
8.2 Fineness
According to GB/T1345.
8.3 Setting time, stability
Compressive strength
Flexural strength
Unit: MPa
GB/T31832003
According to GB/T1346, but the following supplementary provisions are made for 9.2 and 11.2: If the strength of the stability test specimen is low after 24 hours of moisture curing, the curing time can be appropriately extended, but the total moisture curing time should not exceed 48 hours, and records should be made. 8.4 Water retention rate
According to the test method specified in Appendix A.
8.5 Strength
According to GB/T17671-1999, but the following supplementary provisions are made for 6.1 and 8.2: The preparation of mortar shall be carried out according to Chapter 6 of GB/T17671-1999, but the amount of water used for cement mortar shall be determined when the fluidity of the mortar reaches 180mm~190mm, and the operation method of mortar fluidity shall be carried out according to GB/T2419. When the cement strength is low and the specimen is not easy to demold after 24 hours of molding, it can be appropriately extended, but the total moisture curing time shall not exceed 48 hours. Records shall be kept.
9 Inspection rules
9.1 Numbering and Sampling
Before leaving the factory, cement shall be numbered and sampled according to the same type and strength grade. Bag cement and bulk cement shall be numbered and sampled separately, and each number shall be a sampling unit. The numbering of cement shall be determined according to the annual production capacity of the cement plant: one number for cement above 600,000 tons but not exceeding 1,000 tons; one number for cement above 300,000 tons to 600,000 tons but not exceeding 600 tons; one number for cement above 100,000 tons to 300,000 tons but not exceeding 400 tons; one number for cement below 100,000 tons but not exceeding 200 tons. The sampling method shall be carried out in accordance with GB12573. Sampling shall be representative. It can be taken continuously or from more than 20 different parts with equal amount of samples, with a total amount of at least 12 kg.
The samples shall be inspected for delivery according to the method specified in Chapter 7 of this standard, and the inspection items shall include all the technical requirements of Chapter 7. 9.2 Delivery Cement
Delivery cement shall ensure the delivery strength grade, and the other technical requirements shall comply with the relevant requirements of this standard. 9.3 Waste and unqualified products
9.3.1 Waste
Any item of sulfur trioxide, initial setting time and stability that does not meet the requirements of this standard or the strength of 12.5 grade masonry cement is lower than the index specified in Table 1 is considered as waste.
9.3.2 Unqualified products
Any item of fineness, final setting time and water retention that does not meet the requirements of this standard or the strength of 22.5 grade masonry cement is lower than the index specified in Table 1 is considered as unqualified products. Cement packaging marks that do not contain the complete cement type, strength grade, manufacturer name and factory number are also considered as unqualified products.
9.4 Test report
The test report should include the technical requirements and test results specified in this standard, the names and addition amounts of grinding aids, industrial by-product stone and mixed materials. When required by the user, the cement plant should send the test results of all items except 28d strength within 11 days from the date of cement shipment. The 28d strength value should be reported within 32 days from the date of cement delivery. 9.5 Delivery and Acceptance
9.5.1 The quality acceptance of cement at the time of delivery can be based on the inspection results of physical samples or the inspection report of cement with the same number from the cement plant. The method of acceptance shall be agreed upon by the buyer and seller and shall be indicated in the contract or agreement. 9.5.2 When the inspection results of physical samples are used as the basis for acceptance, the buyer and seller shall jointly take samples and seal them before shipment or at the place of delivery. The sampling method shall be carried out in accordance with GB12573, the sampling quantity is 20kg, and it shall be divided into two equal parts, one of which shall be kept by the seller for 40 days, and the other shall be inspected by the buyer according to the items and methods specified in this standard. Within 40 days, if the buyer finds that the product quality does not meet the requirements of this standard and the seller has objections, the two parties shall send the other sample kept by the party to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 3
GB/T3183-2003
9.5.3 When the inspection report of the same number of cement from the cement plant is used as the basis for acceptance, the buyer shall take a sample from the same number of cement before shipment or at the time of delivery, and the two parties shall seal it together and keep it for three months; or the seller shall be entrusted to take a sample from the same number of cement, and seal it for three months. Within three months, if the buyer has doubts about the quality of cement, the buyer and seller shall send the sealed sample to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 10 Packaging, marking, transportation, storage
10.1 Packaging
Cement can be packed in bags or in bulk. The net content of each bag of bagged cement is 50kg, and shall not be less than 98% of the marked mass. The total mass of 20 bags randomly drawn shall not be less than 1000kg. Other packaging forms shall be determined by negotiation between the supply and demand parties. However, the quality requirements for bagging must comply with the above principles.
Cement packaging bags shall comply with the provisions of GB9774. 10.2 Marking
The cement bag should be clearly marked with: product name, code, net content, strength grade, production license number, producer name and address, factory number, implementation standard number, packaging year, month and day. The name and strength grade of cement should be clearly printed on both sides of the packaging bag in black. Cards with the same content as the bagging mark should be submitted when transporting in bulk. 10.3 Transportation and storage
Cement should not be damp or mixed with foreign objects during transportation and storage. Cement of different varieties and strength grades should be stored separately and should not be mixed. A.1 Principle
Appendix A
(Normative Appendix)
Method for determining the water retention rate of masonry cement
GB/T3183-2003
Use freshly mixed mortar within the specified fluidity range and carry out water absorption treatment according to the specified method. The water retention rate of mortar is the mass of water retained in the mortar after water absorption treatment, and is expressed as a mass percentage of the original water volume. A.2 Instruments and equipment
A.2.1 Rigid test mold, circular, inner diameter 100mm±1mm, internal effective depth 25mm±1mm; A.2.2 Rigid bottom plate, circular, non-porous, diameter 110mm±5mm, thickness 5mm±1mm; A,2.3 Dry filter paper, slow quantitative filter paper, diameter 110mm±1mm; A.2.4 Metal filter, mesh size 45um, circular, diameter 110mm+1mm; A.2.5 Metal scraper;
A.2.6 Electronic balance, weighing 2kg, sensitivity 0.1g; A.2.7
Iron, mass 2kg.
A.3 Operation steps
A.3.1 Weigh the empty and dry test mold to an accuracy of 0.1g; weigh 8 unused filter papers to an accuracy of 0.1g. A3.2 Weigh 450g±2g cement, 1350g±5g ISO standard sand, and 225mL±1mL water, prepare mortar according to GB/T17671, and measure the fluidity of mortar according to GB/T2419, and adjust the amount of water to the amount of water used when the fluidity of cement mortar is within the range of 180mm~190mm.
A.3.3 When the fluidity of mortar is within the range of 180mm~190mm, re-stir the remaining mortar in the mixing pot at a low speed for 15s, then use a scraper to fill the test mold with mortar and smooth the surface. A.3.4 Weigh the test mold filled with mortar to an accuracy of 0.1g. Cover the mortar surface with a filter screen, and place 8 weighed filter papers on top of the filter screen, and place a rigid bottom plate on the filter paper. Turn the test mold 180° and place it upside down on a flat surface, and place a 2kg iron camel on the bottom of the inverted test mold. After 5min±5s, remove the iron camel, and then put it back upside down, remove the rigid bottom plate, filter paper and filter screen, and weigh the filter paper to an accuracy of 0.1g. A.3.5 Repeat the test once.
A4 Calculation of water retention rate
First, calculate the amount of water in the mortar before water absorption according to formula (A.1) (2): Z
Wherein:
U—the mass of the empty mold, in grams (g); YX(WU)
1350+450+Y
W-the mass of the test mold filled with mortar, in grams (g); Y is the amount of water used to prepare mortar with a fluidity value of 180mm~190mm, in grams (g). Calculate the water retention rate (R) according to formula (A, 2):
R=[Z-(XV)]×100
GB/T3183-2003
Where:
V is the mass of 8 filter papers before water absorption, in grams (g); X~-the mass of 8 filter papers after water absorption, in grams (g); 2-the amount of water in the mortar before water absorption, in grams (g). Calculate the average water retention rate of the two tests, accurate to an integer. If the deviation between the two test values ​​and the average value is 2%, repeat the test and make two more tests with a batch of freshly mixed mortar. GB/T3183-2003
People's Republic of China
National Standard
GB/T31832003
Published by China Standards Press
No.16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Anhuangdao Printing Factory, Xinhua Bookstore Distributed by Beijing Publishing House Sold by Xinhua Bookstores in various regions*
Size 880X×12301/16 Printing sheet 3/4 Word count 14,000 words First edition July 2003 First printing July 2003 Print run 1-3000
Book number: 155066: 1-19695
Website: bzcbs.com
Copyright reserved. Infringements will be investigated
Report phone number: (010) 685335331 Waste
Any item of sulfur trioxide, initial setting time and stability that does not meet the requirements of this standard or the strength of 12.5 grade masonry cement is lower than the index specified in Table 1 is considered as waste.
9.3.2 Unqualified products
Any item of fineness, final setting time and water retention that does not meet the requirements of this standard or the strength of 22.5 grade masonry cement is lower than the index specified in Table 1 is considered as unqualified products. Cement packaging marks that do not contain the complete cement type, strength grade, producer name and factory number are also considered as unqualified products.
9.4 Test report
The test report should include the technical requirements and test results specified in this standard, the names and addition amounts of grinding aids, industrial by-product stone and mixed materials. When required by the user, the cement plant should send the test results except the 28d strength within 11 days from the date of cement delivery. The 28d strength value should be reported within 32 days from the date of cement delivery. 9.5 Delivery and Acceptance
9.5.1 The quality acceptance of cement at the time of delivery can be based on the inspection results of physical samples or the inspection report of cement with the same number from the cement plant. The method of acceptance shall be agreed upon by the buyer and seller and shall be specified in the contract or agreement. 9.5.2 When the inspection results of physical samples are used as the basis for acceptance, the buyer and seller shall jointly take samples and seal them before shipment or at the place of delivery. The sampling method shall be carried out in accordance with GB12573, with a sampling quantity of 20kg, which shall be divided into two equal parts, one of which shall be kept by the seller for 40 days and the other by the buyer according to the items and methods specified in this standard. Within 40 days, if the buyer finds that the product quality does not meet the requirements of this standard and the seller has objections, the two parties shall send the other sample kept by the party to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 3
GB/T3183-2003
9.5.3 When the inspection report of the same number of cement from the cement plant is used as the basis for acceptance, the buyer shall take a sample from the same number of cement before shipment or at the time of delivery, and the two parties shall seal it together and keep it for three months; or the seller shall be entrusted to take a sample from the same number of cement, and seal it for three months. Within three months, if the buyer has doubts about the quality of cement, the buyer and seller shall send the sealed sample to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 10 Packaging, marking, transportation, storage
10.1 Packaging
Cement can be packed in bags or in bulk. The net content of each bag of bagged cement is 50kg, and shall not be less than 98% of the marked mass. The total mass of 20 bags randomly drawn shall not be less than 1000kg. Other packaging forms shall be determined by negotiation between the supply and demand parties. However, the quality requirements for bagging must comply with the above principles.
Cement packaging bags shall comply with the provisions of GB9774. 10.2 Marking
The cement bag should be clearly marked with: product name, code, net content, strength grade, production license number, producer name and address, factory number, implementation standard number, packaging year, month and day. The name and strength grade of cement should be clearly printed on both sides of the packaging bag in black. Cards with the same content as the bagging mark should be submitted when transporting in bulk. 10.3 Transportation and storage
Cement should not be damp or mixed with foreign objects during transportation and storage. Cement of different varieties and strength grades should be stored separately and should not be mixed. A.1 Principle
Appendix A
(Normative Appendix)
Method for determining the water retention rate of masonry cement
GB/T3183-2003
Use freshly mixed mortar within the specified fluidity range and carry out water absorption treatment according to the specified method. The water retention rate of mortar is the mass of water retained in the mortar after water absorption treatment, and is expressed as a mass percentage of the original water volume. A.2 Instruments and equipment
A.2.1 Rigid test mold, circular, inner diameter 100mm±1mm, internal effective depth 25mm±1mm; A.2.2 Rigid bottom plate, circular, non-porous, diameter 110mm±5mm, thickness 5mm±1mm; A,2.3 Dry filter paper, slow quantitative filter paper, diameter 110mm±1mm; A.2.4 Metal filter, mesh size 45um, circular, diameter 110mm+1mm; A.2.5 Metal scraper;
A.2.6 Electronic balance, weighing 2kg, sensitivity 0.1g; A.2.7
Iron, mass 2kg.
A.3 Operation steps
A.3.1 Weigh the empty and dry test mold to an accuracy of 0.1g; weigh 8 unused filter papers to an accuracy of 0.1g. A3.2 Weigh 450g±2g cement, 1350g±5g ISO standard sand, and 225mL±1mL water, prepare mortar according to GB/T17671, and measure the fluidity of mortar according to GB/T2419, and adjust the amount of water to the amount of water used when the fluidity of cement mortar is within the range of 180mm~190mm.
A.3.3 When the fluidity of mortar is within the range of 180mm~190mm, re-stir the remaining mortar in the mixing pot at a low speed for 15s, then use a scraper to fill the test mold with mortar and smooth the surface. A.3.4 Weigh the test mold filled with mortar to an accuracy of 0.1g. Cover the mortar surface with a filter screen, and place 8 weighed filter papers on top of the filter screen, and place a rigid bottom plate on the filter paper. Turn the test mold 180° and place it upside down on a flat surface, and place a 2kg iron camel on the bottom of the inverted test mold. After 5min±5s, remove the iron camel, and then put it back upside down, remove the rigid bottom plate, filter paper and filter screen, and weigh the filter paper to an accuracy of 0.1g. A.3.5 Repeat the test once.
A4 Calculation of water retention rate
First, calculate the amount of water in the mortar before water absorption according to formula (A.1) (2): Z
Wherein:
U—the mass of the empty mold, in grams (g); YX(WU)
1350+450+Y
W-the mass of the test mold filled with mortar, in grams (g); Y is the amount of water used to prepare mortar with a fluidity value of 180mm~190mm, in grams (g). Calculate the water retention rate (R) according to formula (A, 2):
R=[Z-(XV)]×100
GB/T3183-2003
Where:
V is the mass of 8 filter papers before water absorption, in grams (g); X~-the mass of 8 filter papers after water absorption, in grams (g); 2-the amount of water in the mortar before water absorption, in grams (g). Calculate the average water retention rate of the two tests, accurate to an integer. If the deviation between the two test values ​​and the average value is 2%, repeat the test and make two more tests with a batch of freshly mixed mortar. GB/T3183-2003
People's Republic of China
National Standard
GB/T31832003
Published by China Standards Press
No.16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Anhuangdao Printing Factory, Xinhua Bookstore Distributed by Beijing Publishing House Sold by Xinhua Bookstores in various regions*
Size 880X×12301/16 Printing sheet 3/4 Word count 14,000 words First edition July 2003 First printing July 2003 Print run 1-3000
Book number: 155066: 1-19695
Website: bzcbs.com
Copyright reserved. Infringements will be investigated
Report phone number: (010) 685335331 Waste
Any item of sulfur trioxide, initial setting time and stability that does not meet the requirements of this standard or the strength of 12.5 grade masonry cement is lower than the index specified in Table 1 is considered as waste.
9.3.2 Unqualified products
Any item of fineness, final setting time and water retention that does not meet the requirements of this standard or the strength of 22.5 grade masonry cement is lower than the index specified in Table 1 is considered as unqualified products. Cement packaging marks that do not contain the complete cement type, strength grade, producer name and factory number are also considered as unqualified products.
9.4 Test report
The test report should include the technical requirements and test results specified in this standard, the names and addition amounts of grinding aids, industrial by-product stone and mixed materials. When required by the user, the cement plant should send the test results except the 28d strength within 11 days from the date of cement delivery. The 28d strength value should be reported within 32 days from the date of cement delivery. 9.5 Delivery and Acceptance
9.5.1 The quality acceptance of cement at the time of delivery can be based on the inspection results of physical samples or the inspection report of cement with the same number from the cement plant. The method of acceptance shall be agreed upon by the buyer and seller and shall be specified in the contract or agreement. 9.5.2 When the inspection results of physical samples are used as the basis for acceptance, the buyer and seller shall jointly take samples and seal them before shipment or at the place of delivery. The sampling method shall be carried out in accordance with GB12573, with a sampling quantity of 20kg, which shall be divided into two equal parts, one of which shall be kept by the seller for 40 days and the other by the buyer according to the items and methods specified in this standard. Within 40 days, if the buyer finds that the product quality does not meet the requirements of this standard and the seller has objections, the two parties shall send the other sample kept by the party to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 3
GB/T3183-2003
9.5.3 When the inspection report of the same number of cement from the cement plant is used as the basis for acceptance, the buyer shall take a sample from the same number of cement before shipment or at the time of delivery, and the two parties shall seal it together and keep it for three months; or the seller shall be entrusted to take a sample from the same number of cement, and seal it for three months. Within three months, if the buyer has doubts about the quality of cement, the buyer and seller shall send the sealed sample to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 10 Packaging, marking, transportation, storage
10.1 Packaging
Cement can be packed in bags or in bulk. The net content of each bag of bagged cement is 50kg, and shall not be less than 98% of the marked mass. The total mass of 20 bags randomly drawn shall not be less than 1000kg. Other packaging forms shall be determined by negotiation between the supply and demand parties. However, the quality requirements for bagging must comply with the above principles.
Cement packaging bags shall comply with the provisions of GB9774. 10.2 Marking
The cement bag should be clearly marked with: product name, code, net content, strength grade, production license number, producer name and address, factory number, implementation standard number, packaging year, month and day. The name and strength grade of cement should be clearly printed on both sides of the packaging bag in black. Cards with the same content as the bagging mark should be submitted when transporting in bulk. 10.3 Transportation and storage
Cement should not be damp or mixed with foreign objects during transportation and storage. Cement of different varieties and strength grades should be stored separately and should not be mixed. A.1 Principle
Appendix A
(Normative Appendix)
Method for determining the water retention rate of masonry cement
GB/T3183-2003
Use freshly mixed mortar within the specified fluidity range and carry out water absorption treatment according to the specified method. The water retention rate of mortar is the mass of water retained in the mortar after water absorption treatment, and is expressed as a mass percentage of the original water volume. A.2 Instruments and equipment
A.2.1 Rigid test mold, circular, inner diameter 100mm±1mm, internal effective depth 25mm±1mm; A.2.2 Rigid bottom plate, circular, non-porous, diameter 110mm±5mm, thickness 5mm±1mm; A,2.3 Dry filter paper, slow quantitative filter paper, diameter 110mm±1mm; A.2.4 Metal filter, mesh size 45um, circular, diameter 110mm+1mm; A.2.5 Metal scraper;
A.2.6 Electronic balance, weighing 2kg, sensitivity 0.1g; A.2.7
Iron, mass 2kg.
A.3 Operation steps
A.3.1 Weigh the empty and dry test mold to an accuracy of 0.1g; weigh 8 unused filter papers to an accuracy of 0.1g. A3.2 Weigh 450g±2g cement, 1350g±5g ISO standard sand, and 225mL±1mL water, prepare mortar according to GB/T17671, and measure the fluidity of mortar according to GB/T2419, and adjust the amount of water to the amount of water used when the fluidity of cement mortar is within the range of 180mm~190mm.
A.3.3 When the fluidity of mortar is within the range of 180mm~190mm, re-stir the remaining mortar in the mixing pot at a low speed for 15s, then use a scraper to fill the test mold with mortar and smooth the surface. A.3.4 Weigh the test mold filled with mortar to an accuracy of 0.1g. Cover the mortar surface with a filter screen, and place 8 weighed filter papers on top of the filter screen, and place a rigid bottom plate on the filter paper. Turn the test mold 180° and place it upside down on a flat surface, and place a 2kg iron camel on the bottom of the inverted test mold. After 5min±5s, remove the iron camel, and then put it back upside down, remove the rigid bottom plate, filter paper and filter screen, and weigh the filter paper to an accuracy of 0.1g. A.3.5 Repeat the test once.
A4 Calculation of water retention rate
First, calculate the amount of water in the mortar before water absorption according to formula (A.1) (2): Z
Wherein:
U—the mass of the empty mold, in grams (g); YX(WU)
1350+450+Y
W-the mass of the test mold filled with mortar, in grams (g); Y is the amount of water used to prepare mortar with a fluidity value of 180mm~190mm, in grams (g). Calculate the water retention rate (R) according to formula (A, 2):
R=[Z-(XV)]×100
GB/T3183-2003
Where:
V is the mass of 8 filter papers before water absorption, in grams (g); X~-the mass of 8 filter papers after water absorption, in grams (g); 2-the amount of water in the mortar before water absorption, in grams (g). Calculate the average water retention rate of the two tests, accurate to an integer. If the deviation between the two test values ​​and the average value is 2%, repeat the test and make two more tests with a batch of freshly mixed mortar. GB/T3183-2003
People's Republic of China
National Standard
GB/T31832003
Published by China Standards Press
No.16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Anhuangdao Printing Factory, Xinhua Bookstore Distributed by Beijing Publishing House Sold by Xinhua Bookstores in various regions*
Size 880X×12301/16 Printing sheet 3/4 Word count 14,000 words First edition July 2003 First printing July 2003 Print run 1-3000
Book number: 155066: 1-19695
Website: bzcbs.com
Copyright reserved. Infringements will be investigated
Report phone number: (010) 685335332 When the inspection results of physical samples are used as the basis for acceptance, the buyer and seller shall jointly take samples and seal them before shipment or at the place of delivery. The sampling method shall be carried out in accordance with GB12573, and the sampling quantity shall be 20kg, which shall be divided into two equal parts, one of which shall be kept by the seller for 40 days, and the other shall be inspected by the buyer according to the items and methods specified in this standard. Within 40 days, if the buyer finds that the product quality does not meet the requirements of this standard and the seller has objections, the two parties shall send the other sample kept by one party to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 3
GB/T3183-2003
9.5.3 When the inspection report of the same number of cement from the cement plant is used as the basis for acceptance, the buyer shall take samples from the same number of cement before shipment or at the time of delivery, and both parties shall seal and keep them for three months; or entrust the seller to take samples from the same number of cement and seal and keep them for three months. If the buyer has any doubts about the quality of cement within three months, the buyer and seller shall send the sealed samples to the provincial or nationally recognized cement quality supervision and inspection agency for arbitration inspection. 10 Packaging, marking, transportation and storage
10.1 Packaging
Cement can be packed in bags or in bulk. The net content of each bag of bagged cement is 50kg and shall not be less than 98% of the marked mass. The total mass of 20 bags randomly selected shall not be less than 1000kg. Other packaging forms shall be determined by negotiation between the supply and demand parties. However, the relevant bagging quality requirements must comply with the above principles.
Cement packaging bags shall comply with the provisions of GB9774. 10.2 Marking
The cement bag shall be clearly marked with: product name, code, net content, strength grade, production license number, producer name and address, factory number, implementation standard number, packaging year, month and day. The name and strength grade of cement shall be clearly printed on both sides of the bag and printed in black. When transporting in bulk, a card with the same content as the bagging mark shall be submitted. 10.3 Transportation and storage
Cement should not be exposed to moisture or mixed with foreign matter during transportation and storage. Cement of different types and strength grades should be stored separately and should not be mixed. A.1 Principle
Appendix A
(Normative Appendix)
Determination method of water retention of masonry cement
GB/T3183-2003
Use freshly mixed mortar within the specified fluidity range and perform water absorption treatment according to the specified method. The water retention rate of mortar is the mass of water retained in the mortar after water absorption treatment, and is expressed as a mass percentage of the original water volume. A.2 Instruments and equipment
A.2.1 Rigid test mold, circular, inner diameter 100mm ± 1mm, internal effective depth 25mm ± 1mm; A.2.2 Rigid bottom plate, circular, non-porous, diameter 110mm ± 5mm, thickness 5mm ± 1mm; A.2.3 Dry filter paper, slow quantitative filter paper, diameter 110mm ± 1mm; A.2.4 Metal filter, mesh size 45um, circular, diameter 110mm + 1mm; A.2.5 Metal scraper;
A.2.6 Electronic balance, weighing 2kg, sensitivity 0.1g; A.2.7
Iron, mass 2kg.
A.3 Operation steps
A.3.1 Weigh the empty dry test mold to the nearest 0.1g; weigh 8 unused filter papers to the nearest 0.1g. A3.2 Weigh 450g±2g cement, 1350g±5g ISO standard sand, and 225mL±1mL water, prepare mortar according to GB/T17671, and measure the fluidity of mortar according to GB/T2419. Adjust the amount of water to the amount of water required for the fluidity of cement mortar to be within the range of 180mm~190mm.
A.3.3 When the fluidity of mortar is within the range of 180mm~190mm, stir the remaining mortar in the mixing pot again at low speed for 15s, then fill the test mold with mortar with a scraper and smooth the surface. A.3.4 Weigh the test mold filled with mortar to an accuracy of 0.1g. Cover the mortar surface with a filter screen, and place 8 weighed filter papers on the top of the filter screen, and place a rigid bottom plate on the filter paper. Turn the test mold 180° and place it on a flat surface, and place a 2kg iron camel on the bottom of the inverted test mold. After 5min ± 5s, remove the iron camel, put it back upside down, remove the rigid bottom plate, filter paper and filter screen, and weigh the filter paper to an accuracy of 0.1g. A.3.5 Repeat the test once.
A4 Calculation of water retention rate
First, calculate the amount of water in the mortar before water absorption according to formula (A.1) (2): Z
W-the mass of the empty mold, in grams (g); YX(WU)
1350+450+Y
W-the mass of the test mold filled with mortar, in grams (g); Y is the amount of water used to prepare mortar with a fluidity value of 180mm~190mm, in grams (g). Calculate the water retention rate (R) according to formula (A, 2):
R=[Z-(XV)]×100
GB/T3183-2003
Where:
V is the mass of 8 filter papers before water absorption, in grams (g); X~-the mass of 8 filter papers after water absorption, in grams (g); 2-the amount of water in the mortar before water absorption, in grams (g). Calculate the average water retention rate of the two tests, accurate to an integer. If the deviation between the two test values ​​and the average value is 2%, repeat the test and make two more tests with a batch of freshly mixed mortar. GB/T3183-2003
People's Republic of China
National Standard
GB/T31832003
Published by China Standards Press
No.16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Anhuangdao Printing Factory, Xinhua Bookstore Distributed by Beijing Publishing House Sold by Xinhua Bookstores in various regions*
Size 880X×12301/16 Printing sheet 3/4 Word count 14,000 words First edition July 2003 First printing July 2003 Print run 1-3000
Book number: 155066: 1-19695
Website: bzcbs.com
Copyright reserved. Infringements will be investigated
Report phone number: (010) 685335332 When the inspection results of physical samples are used as the basis for acceptance, the buyer and seller shall jointly take samples and seal them before shipment or at the place of delivery. The sampling method shall be carried out in accordance with GB12573, and the sampling quantity shall be 20kg, which shall be divided into two equal parts, one of which shall be kept by the seller for 40 days, and the other shall be inspected by the buyer according to the items and methods specified in this standard. Within 40 days, if the buyer finds that the product quality does not meet the requirements of this standard and the seller has objections, the two parties shall send the other sample kept by one party to the provincial or provincial-level nationally recognized cement quality supervision and inspection agency for arbitration inspection. 3
GB/T3183-2003
9.5.3 When the inspection report of the same number of cement from the cement plant is used as the basis for acceptance, the buyer shall take samples from the same number of cement before shipment or at the time of delivery, and both parties shall seal and keep them for three months; or entrust the seller to take samples from the same number of cement and seal and keep them for three months. If the buyer has any doubts about the quality of cement within three months, the buyer and seller shall send the sealed samples to the provincial or nationally recognized cement quality supervision and inspection agency for arbitration inspection. 10 Packaging, marking, transportation and storage
10.1 Packaging
Cement can be packed in bags or in bulk. The net content of each bag of bagged cement is 50kg and shall not be less than 98% of the marked mass. The total mass of 20 bags randomly selected shall not be less than 1000kg. Other packaging forms shall be determined by negotiation between the supply and demand parties. However, the relevant bagging quality requirements must comply with the above principles.
Cement packaging bags shall comply with the provisions of GB9774. 10.2 Marking
The cement bag shall be clearly marked with: product name, code, net content, strength grade, production license number, producer name and address, factory number, implementation standard number, packaging year, month and day. The name and strength grade of cement shall be clearly printed on both sides of the bag and printed in black. When transporting in bulk, a card with the same content as the bagging mark shall be submitted. 10.3 Transportation and storage
Cement should not be exposed to moisture or mixed with foreign matter during transportation and storage. Cement of different types and strength grades should be stored separately and should not be mixed. A.1 Principle
Appendix A
(Normative Appendix)
Determination method of water retention of masonry cement
GB/T3183-2003
Use freshly mixed mortar within the specified fluidity range and perform water absorption treatment according to the specified method. The water retention rate of mortar is the mass of water retained in the mortar after water absorption treatment, and is expressed as a mass percentage of the original water volume. A.2 Instruments and equipment
A.2.1 Rigid test mold, circular, inner diameter 100mm ± 1mm, internal effective depth 25mm ± 1mm; A.2.2 Rigid bottom plate, circular, non-porous, diameter 110mm ± 5mm, thickness 5mm ± 1mm; A.2.3 Dry filter paper, slow quantitative filter paper, diameter 110mm ± 1mm; A.2.4 Metal filter, mesh size 45um, circular, diameter 110mm + 1mm; A.2.5 Metal scraper;
A.2.6 Electronic balance, weighing 2kg, sensitivity 0.1g; A.2.7
Iron, mass 2kg.
A.3 Operation steps
A.3.1 Weigh the empty dry test mold to the nearest 0.1g; weigh 8 unused filter papers to the nearest 0.1g. A3.2 Weigh 450g±2g cement, 1350g±5g ISO standard sand, and 225mL±1mL water, prepare mortar according to GB/T17671, and measure the fluidity of mortar according to GB/T2419. Adjust the amount of water to the amount of water required for the fluidity of cement mortar to be within the range of 180mm~190mm.
A.3.3 When the fluidity of mortar is within the range of 180mm~190mm, stir the remaining mortar in the mixing pot again at low speed for 15s, then fill the test mold with mortar with a scraper and smooth the surface. A.3.4 Weigh the test mold filled with mortar to an accuracy of 0.1g. Cover the mortar surface with a filter screen, and place 8 weighed filter papers on the top of the filter screen, and place a rigid bottom plate on the filter paper. Turn the test mold 180° and place it on a flat surface, and place a 2kg iron camel on the bottom of the inverted test mold. After 5min ± 5s, remove the iron camel, put it back upside down, remove the rigid bottom plate, filter paper and filter screen, and weigh the filter paper to an accuracy of 0.1g. A.3.5 Repeat the test once.
A4 Calculation of water retention rate
First, calculate the amount of water in the mortar before water absorption according to formula (A.1) (2): Z
W-the mass of the empty mold, in grams (g); YX(WU)
1350+450+Y
W-the mass of the test mold filled with mortar, in grams (g); Y is the amount of water used to prepare mortar with a fluidity value of 180mm~190mm, in grams (g). Calculate the water retention rate (R) according to formula (A, 2):
R=[Z-(XV)]×100
GB/T3183-2003
Where:
V is the mass of 8 filter papers before water absorption, in grams (g); X~-the mass of 8 filter papers after water absorption, in grams (g); 2-the amount of water in the mortar before water absorption, in grams (g). Calculate the average water retention rate of the two tests, accurate to an integer. If the deviation between the two test values ​​and the average value is 2%, repeat the test and make two more tests with a batch of freshly mixed mortar. GB/T3183-2003
People's Republic of China
National Standard
GB/T31832003
Published by China Standards Press
No.16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Anhuangdao Printing Factory, Xinhua Bookstore Distributed by Beijing Publishing House Sold by Xinhua Bookstores in various regions*
Size 880X×12301/16 Printing sheet 3/4 Word count 14,000 words First edition July 2003 First printing July 2003 Print run 1-3000
Book number: 155066: 1-19695
Website: bzcbs.com
Copyright reserved. Infringements will be investigated
Report phone number: (010) 685335332.4 Metal filter, mesh size 45um, circular, diameter 110mm+1mm; A.2.5 Metal scraper;
A.2.6 Electronic balance, weighing 2kg, sensitivity 0.1g; A.2.7
Iron, mass 2kg.
A.3 Operation steps
A.3.1 Weigh the empty and dry test mold to an accuracy of 0.1g; weigh 8 unused filter papers to an accuracy of 0.1g. A3.2 Weigh 450g±2g cement, 1350g±5g ISO standard sand, measure 225mL±1mL water, prepare mortar according to GB/T17671, and measure the fluidity of mortar according to GB/T2419, and adjust the water amount to the water amount used when the fluidity of cement mortar is within the range of 180mm~190mm.
A.3.3 When the fluidity of the mortar is within the range of 180mm to 190mm, re-stir the remaining mortar in the mixing pot at a low speed for 15s, then use a scraper to fill the test mold with mortar and smooth the surface. A.3.4 Weigh the test mold filled with mortar to an accuracy of 0.1g. Cover the mortar surface with a filter screen, and place 8 weighed filter papers on the top of the filter screen, and place a rigid bottom plate on the filter paper. Turn the test mold 180° and place it on a flat surface and place an iron camel with a mass of 2kg on the bottom of the inverted test mold. After 5min±5s, remove the iron camel, put it back upside down, remove the rigid bottom plate, filter paper and filter screen, and weigh the filter paper to an accuracy of 0.1g. A.3.5 Repeat the test once.
A4 Calculation of water retention rate
First, calculate the amount of water in the mortar before water absorption according to formula (A.1) (2): Z
Wherein:
U—the mass of the empty mold, in grams (g); YX(WU)
1350+450+Y
W-the mass of the test mold filled with mortar, in grams (g); Y is the amount of water used to prepare mortar with a fluidity value of 180mm~190mm, in grams (g). Calculate the water retention rate (R) according to formula (A, 2):
R=[Z-(XV)]×100
GB/T3183-2003
Where:
V is the mass of 8 filter papers before water absorption, in grams (g); X~-the mass of 8 filter papers after water absorption, in grams (g); 2-the amount of water in the mortar before water absorption, in grams (g). Calculate the average water retention rate of the two tests, accurate to an integer. If the deviation between the two test values ​​and the average value is 2%, repeat the test and make two more tests with a batch of freshly mixed mortar. GB/T3183-2003
People's Republic of China
National Standard
GB/T31832003
Published by China Standards Press
No.16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Anhuangdao Printing Factory, Xinhua Bookstore Distributed by Beijing Publishing House Sold by Xinhua Bookstores in various regions*
Size 880X×12301/16 Printing sheet 3/4 Word count 14,000 words First edition July 2003 First printing July 2003 Print run 1-3000bZxz.net
Book number: 155066: 1-19695
Website: bzcbs.com
Copyright reserved. Infringements will be investigated
Report phone number: (010) 685335332.4 Metal filter, mesh size 45um, circular, diameter 110mm+1mm; A.2.5 Metal scraper;
A.2.6 Electronic balance, weighing 2kg, sensitivity 0.1g; A.2.7
Iron, mass 2kg.
A.3 Operation steps
A.3.1 Weigh the empty and dry test mold to an accuracy of 0.1g; weigh 8 unused filter papers to an accuracy of 0.1g. A3.2 Weigh 450g±2g cement, 1350g±5g ISO standard sand, measure 225mL±1mL water, prepare mortar according to GB/T17671, and measure the fluidity of mortar according to GB/T2419, and adjust the water amount to the water amount used when the fluidity of cement mortar is within the range of 180mm~190mm.
A.3.3 When the fluidity of the mortar is within the range of 180mm to 190mm, re-stir the remaining mortar in the mixing pot at a low speed for 15s, then use a scraper to fill the test mold with mortar and smooth the surface. A.3.4 Weigh the test mold filled with mortar to an accuracy of 0.1g. Cover the mortar surface with a filter screen, and place 8 weighed filter papers on the top of the filter screen, and place a rigid bottom plate on the filter paper. Turn the test mold 180° and place it on a flat surface and place an iron camel with a mass of 2kg on the bottom of the inverted test mold. After 5min±5s, remove the iron camel, put it back upside down, remove the rigid bottom plate, filter paper and filter screen, and weigh the filter paper to an accuracy of 0.1g. A.3.5 Repeat the test once.
A4 Calculation of water retention rate
First, calculate the amount of water in the mortar before water absorption according to formula (A.1) (2): Z
Wherein:
U—the mass of the empty mold, in grams (g); YX(WU)
1350+450+Y
W-the mass of the test mold filled with mortar, in grams (g); Y is the amount of water used to prepare mortar with a fluidity value of 180mm~190mm, in grams (g). Calculate the water retention rate (R) according to formula (A, 2):
R=[Z-(XV)]×100
GB/T3183-2003
Where:
V is the mass of 8 filter papers before water absorption, in grams (g); X~-the mass of 8 filter papers after water absorption, in grams (g); 2-the amount of water in the mortar before water absorption, in grams (g). Calculate the average water retention rate of the two tests, accurate to an integer. If the deviation between the two test values ​​and the average value is 2%, repeat the test and make two more tests with a batch of freshly mixed mortar. GB/T3183-2003
People's Republic of China
National Standard
GB/T31832003
Published by China Standards Press
No.16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Anhuangdao Printing Factory, Xinhua Bookstore Distributed by Beijing Publishing House Sold by Xinhua Bookstores in various regions*
Size 880X×12301/16 Printing sheet 3/4 Word count 14,000 words First edition July 2003 First printing July 2003 Print run 1-3000
Book number: 155066: 1-19695
Website: bzcbs.com
Copyright reserved. Infringements will be investigated
Report phone number: (010) 68533533
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