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GB/T 8077-2023: Methods for testing uniformity of concrete admixtures
Status: Valid GB/T 8077: Evolution and historical versions
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| GB/T 8077-2023 | English | 849 |
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Methods for testing uniformity of concrete admixtures
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GB/T 8077-2023
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| GB/T 8077-2012 | English | 999 |
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Methods for testing uniformity of concrete admixture
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GB/T 8077-2012
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| GB/T 8077-2000 | English | 799 |
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Methods for testing uniformity of concrete admixture
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| GB/T 8077-1987 | English | RFQ |
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Methods for testing uniformity of concrete admixture
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GB/T 8077-1987
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PDF similar to GB/T 8077-2023
Standard similar to GB/T 8077-2023 GB/T 23265 GB/T 26751 GB 8076 GB/T 8075 Basic data | Standard ID | GB/T 8077-2023 (GB/T8077-2023) | | Description (Translated English) | Methods for testing uniformity of concrete admixtures | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q12 | | Classification of International Standard | 91.100.30 | | Word Count Estimation | 42,420 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-07-01 | | Older Standard (superseded by this standard) | GB/T 8077-2012 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 8077-2023: Methods for testing uniformity of concrete admixtures---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 91:100:30
CCSQ12
National Standards of People's Republic of China
Replace GB/T 8077-2012
Test method for homogeneity of concrete admixtures
Published on 2023-12-28
2024-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Test conditions 2
4:1 Number of tests and requirements 2
4:2 Blank test 2
4:3 Burn 2
4:4 Constant 2
4:5 Check chloride ion (Cl-) (silver nitrate test) 2
4:6 Reagent requirements 2
4:7 Data processing requirements 2
5 Appearance 3
6 Stability 3
6:1 Principle 3
6:2 Instrument 3
6:3 Test step 3
6:4 Calculation and presentation of results 3
6:5 Determination of test results 3
7 Solid content 3
7:1 Drying method 3
7:2 Dilution and drying method 4
7:3 Vacuum drying method 5
8 Moisture content 6
8:1 Drying method 6
8:2 Vacuum drying method 7
9 Density 7
9:1 Pycnometer method 7
9:2 Precision density meter method 9
10 Fineness 9
10:1 Manual screening method 9
10:2 Negative pressure screening method 10
11 pH 11
11:1 Principle 11
11:2 Instrument 11
11:3 Test conditions 11
11:4 Test step 11
11:5 Result expression 11
11:6 Repeatability and reproducibility limits11
12 Surface Tension 11
12:1 Principle 11
12:2 Instrument 12
12:3 Test conditions 12
12:4 Test step 12
12:5 Results and calculations 12
12:6 Repeatability and reproducibility limits12
13 Chloride ion content13
13:1 Potentiometric titration 13
13:2 Ion chromatography 15
14 Sodium sulfate content 17
14:1 Gravimetric method 17
14:2 Ion exchange gravimetric method 18
15 Fluidity of cement paste 19
15:1 Principle 19
15:2 Materials and Instruments 19
15:3 Environmental conditions 19
15:4 Test step 19
15:5 Result Expression 19
15:6 Repeatability and reproducibility limits20
16 Water reduction rate of mortar 20
16:1 Principle 20
16:2 Materials and Instruments 20
16:3 Environmental conditions 20
16:4 Test step 20
16:5 Results and calculations 21
16:6 Repeatability and reproducibility limits21
17 Alkali content 21
17:1 Flame photometry 21
17:2 Atomic absorption spectrophotometry 23
Appendix A (Informative) Active Ingredients 26
A:1 Principle 26
A:2 Reagents and instruments 26
A:3 Environmental conditions 26
A:4 Test step 26
Appendix B (informative) Correspondence between density and temperature of pure water 27
Appendix C (informative) Example 28 of calculating the percentage of chloride ions in concrete admixtures using the quadratic derivative method
C:1 Blank test and calibration of silver nitrate concentration28
C:2 Testing of admixture samples 28
Reference 30
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document replaces GB/T 8077-2012 "Test Methods for Homogeneity of Concrete Admixtures": Compared with GB/T 8077-2012, except for the
In addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Expanding agent has been added to the scope (see Chapter 1, Chapter 1 of the:2012 edition);
b) Changed the number of tests and requirements in the basic requirements for testing, changed the requirements for test water, and added routine production control analysis
time requirements, added reagent requirements, and added data processing requirements (see Chapter 4, Chapter 4 of the:2012 edition);
c) Added appearance requirements (see Chapter 5);
d) Added stability requirements (see Chapter 6);
e) Changed the weighing amount of solid content and drying time (see 7:1:3, Chapter 5 of the:2012 edition);
f) Added a test method for solid content—dilution and drying method (see 7:2);
g) Added a test method for solid content—vacuum drying method (see 7:3);
h) Changed the weighing amount of moisture content and drying time (see 8:1:3, Chapter 6 of the:2012 edition);
i) The test method with increased moisture content---vacuum drying method (see 8:2);
j) The liquid pycnometer method of density determination has been deleted, and the correction of the pycnometer volume in the density determination of the pycnometer has been changed (see
9:1:4:1,:2012 version 7:1:4:1, 7:2);
k) Added equipment for fineness inspection by manual sieving analysis method, and added negative pressure sieving analysis method in fineness determination (see 10:1, 10:2,:2012
version of Chapter 8);
l) Instruments with increased surface tension (see 12:2, 10:3 of the:2012 edition);
m) The test method for potentiometric titration of chloride ions has been changed, a fully automatic chloride ion analyzer has been added, and low-concentration chloride ion content has been added:
The quantitative measurement method has increased the concentration of the standard solution, added the sample pretreatment for determining chloride ions in insoluble matter, and changed the repeatability
performance and reproducibility (see Chapter 13, Chapter 11 of the:2012 edition);
n) The pretreatment for chloride ion sample determination by ion chromatography has been changed, the repeatability limit has been changed, and the reproducibility limit has been added (see 13:2:3:1,
13:2:5,:2012 version 11:2:4:1, 11:2:6);
o) The reagents and instruments used for gravimetric determination of sodium sulfate content were changed, and the test procedures were changed (see 14:1:2, 14:1:3,:2012
Versions 12:1:2, 12:1:3, 12:1:4);
p) The instrument for determining sodium sulfate content by ion exchange gravimetric method has been changed (see 14:2:2:2, 12:2:3 of the:2012 version);
q) The instrument for cement slurry fluidity has been changed, additional materials have been added, the temperature of test water has been increased, and the test environment temperature has been increased:
degree, changed the order of adding samples, and changed the test time (see 15:2, 15:4, 13:2, 13:3 of the:2012 version);
r) The test environment temperature of the water reduction rate of the mortar is increased, and the temperature of the test water is increased (see 16:2, 16:3, Chapter:2012 Edition
Chapter 14);
s) The test method for alkali content has been changed, and different pretreatment methods are adopted for water-soluble and water-insoluble samples (see Chapter
Chapter 17, Chapter 15 of the:2012 edition):
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Building Materials Federation:
This document is under the jurisdiction of the National Cement Products Standardization Technical Committee (SAC/TC197):
The main drafting units of this document: Suzhou Concrete and Cement Products Research Institute Testing Center Co:, Ltd:, Suzhou Concrete and Cement Products Research Institute
Co:, Ltd:, China Building Materials Research Institute Co:, Ltd:, Zhejiang Wulong New Materials Co:, Ltd:, Zhejiang Longding Concrete Building Materials Co:, Ltd:
Co:, Ltd:, Guangdong Wenli Testing and Appraisal Co:, Ltd:, Zhejiang Yicheng Testing Co:, Ltd:, Shandong Jianke Building Materials Co:, Ltd:, State Grid Jiang
Suzhou Electric Power Co:, Ltd: Electric Power Research Institute, Guangzhou Building Research Institute Group Co:, Ltd:, Guangdong Jiaotong Testing Co:, Ltd:, Zhejiang Electric Power Co:, Ltd:
Jiangda Dongwu Group Construction New Materials Co:, Ltd:, Guangxi Communications Group Co:, Ltd:, China Building Materials Inspection and Certification Group Jiangsu Co:, Ltd:, China
Iron Nineteenth Bureau Group Sixth Engineering Co:, Ltd:, Guangdong Hongqiang New Materials Co:, Ltd:, Zhejiang Architectural Science Design Institute Co:, Ltd:
Company, Guizhou Dr: Shi Technology Co:, Ltd:, Shenzhen Traffic Engineering Testing and Inspection Center Co:, Ltd:, Guizhou Tianwei Building Materials Technology Co:, Ltd:
Ren Company, China National Building Materials Zhongyan Technology Co:, Ltd:, Sichuan Tongzhou Chemical Technology Co:, Ltd:, Shijiazhuang Changan Yucai Building Materials Co:, Ltd:, Shanxi
Sammus Building Materials Chemical Co:, Ltd:, Suzhou Sanjia Transportation Engineering Co:, Ltd:, Ningbo Xinming Construction Engineering Testing Co:, Ltd:, Guangxi Beihai
Jingyi Electric Power Equipment Co:, Ltd:, Urumqi Northwest Circle Construction Engineering Materials Testing Co:, Ltd:, Suzhou Founder Engineering Technology Development
Inspection Co:, Ltd:, Guangdong Yongji Electric Power Equipment Factory Co:, Ltd:, Nanjing Normal University, Kunshan Qiuzheng Engineering Quality Inspection Co:, Ltd:, Jiangxi Province
Pingxiang Lianyou Building Materials Co:, Ltd:, Guangdong Ruian Technology Industrial Co:, Ltd:, Xi'an Municipal Road and Bridge Construction Group Co:, Ltd: New Building Materials Department
Technology Development Branch, Tiezheng Testing Technology Co:, Ltd:, Ningxia Zhongchai Metrology Testing and Inspection Institute (Co:, Ltd:), Yunnan Jingyi Electric Power Technology Co:, Ltd:
Fushun Dongke Fine Chemical Co:, Ltd:, Tianjin China Railway Engineering Inspection Co:, Ltd:, China Construction Western Construction New Material Technology Co:, Ltd:, Su
Zhou Xingbang Chemical Building Materials Co:, Ltd:, China Construction Second Bureau Civil Engineering Group Co:, Ltd:, China Construction Seventh Bureau International Engineering Construction Co:, Ltd:, China Construction
Seventh Bureau First Construction Engineering Co:, Ltd:
The main drafters of this document: Wang Na, Lu Jun, Wang Tianqi, Lu Guanjun, Zhao Xia, Zhou Xicai, Liu Zhenhua, Jiang Yuliang, Ding Jiying, Zhong Kaihong,
Hong Jianhua, He Zejia, Li Chenggang, Chu Zhaojie, Wang Qi, Zhong Ding, Su Qiang, Xiao Zhiren, Cai Guisheng, Yang Shaowei, Wen Weibiao, He Jianfeng, Li Litao,
Tang Lei, Chen Jie, Li Muping, Liu Yuan, Wang Jian, Shu Xuejun, Wang Jinchun, Wang Jiaofeng, Li Jinlong, Gu Yongming, Mao Zhiyong, Tong Yong, Gu Ruifan, Zhang Yao,
Wang Fenglin, Zhao Lihua, Chen Xiaoxuan, Yu Feng, Wang Yan, Zhou Yujun, Zhong Yilin, Zhang Shanpeng, Li Xu, Bao Yangzhengxin, Liu Guofei, Meng Lingqiang, Ren Wenbo,
Zhao Jun, Qin Manyi, Fan Jingtao, Fang Yun, Si Bingyong, Wang Guimin, Zheng Guofeng, Hu Jian, Xie Tian, Lin Wei, Lu Jungang, Wang Kang, Cao Tingwei, Zhan Zhengjie,
Guo Zhongyi, Jin Junwei, Liu Hongxin, Zou Xin, Huang Yongyi, Liao Yijian, Zeng Chenggang, Cheng Yan, Ma Junwei, Lai Cunyuan, Fu Caohui, Li Lijun, Zhang Haitang,
Ren Mengmeng, Shi Wenjie, Shao Jie, Sun Jinlong, Shao Jingqian, Li Wenkai, Liu Bin, Xue Yongqiang, Dong Yongbo, Li Yaowen, Zhu Guosong, Dai Binpeng, Pan Wei,
Cao Zhonglu, Zhang Ming, Song Xiaoxian, Ren Jianbo, Ying Shiming, Zhang Zheng, Tian Lianmin, Ma Shixiong, Lu Dehua, Zhang Wei, Sun Sheng, Yu Yongyi, Huang Wenming, Guan Wenxun,
Zhang Dandan, Xu Tongxin, Zhan Xingfeng, Li Yanan, Wang Xinqing, Li Haibao, Bai Jianfei, Jia Jianbing, Huo Zhigang, Zhang Hongze, Huang Xingqi, Jiang Dawei,
Wen Qing, Zhang Qiufen, Mou Jiangting, Sun Chungang, Tian Xiaoyang, Hu Yiming, Huang Wenjun, Mi Hao, Xu Shirui, Du Weijun, Wang Jiantao, Feng Lei, Bi Yao, Mao Rongliang,
Zhang Ya, Cui Shuming, Tian Chengyao, Duan Zhen, Li Mangyuan, Ma Lei, Wang Junfeng:
This document was first published in 1987, revised for the first time in:2000, revised for the second time in:2012, and this is the third revision:
Test method for homogeneity of concrete admixtures
1 Scope
This document describes test methods for the homogeneity of concrete admixtures:
This document applies to high-performance water-reducing admixtures, high-efficiency water-reducing admixtures, ordinary water-reducing admixtures, air-entraining water-reducing admixtures, pumping agents, early strength admixtures, retarders, and air-entraining agents:
agent, waterproofing agent, antifreeze, quick-setting agent, expansion agent, etc:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB 175 General Portland Cement
GB/T 2419 Method for determination of fluidity of cement mortar
GB/T 6005 Basic dimensions of test sieve wire mesh, perforated plate and electroformed sheet mesh
GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories
GB/T 8075-2017 Terminology of concrete admixtures
GB/T 17671 Cement mortar strength test method (ISO method)
JC/T 681 planetary cement mortar mixer
JC/T 729 cement slurry mixer
3 Terms and definitions
The following terms and definitions as defined in GB/T 8075-2017 apply to this document:
3:1
In the same laboratory, the same operator uses the same equipment and according to the same test method, the same tested object is measured in a short period of time:
Test conditions that are conducted independently of each other:
[Source: GB/T 8075-2017,6:7]
3:2
In different laboratories, different operators use different equipment and perform independent tests on the same tested object according to the same testing method:
row test conditions:
[Source: GB/T 8075-2017,6:8]
3:3
repeatabilitylimitrepeatabilitylimit
A value for which, under repeatability conditions (3:1), the probability that the absolute difference between two test results is less than or equal to this number is 95%:
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