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GB/T 38140-2019: Test method for determining capability of cement exposed to seawater
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 38140-2019 | English | 119 |
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Test method for determining capability of cement exposed to seawater
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GB/T 38140-2019
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Basic data | Standard ID | GB/T 38140-2019 (GB/T38140-2019) | | Description (Translated English) | Test method for determining capability of cement exposed to seawater | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q11 | | Classification of International Standard | 91.100.10 | | Word Count Estimation | 6,691 | | Date of Issue | 2019-10-18 | | Date of Implementation | 2020-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 38140-2019: Test method for determining capability of cement exposed to seawater---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.
Test method for determining capability of cement exposed to seawater
ICS 91.100.10
Q11
National Standards of People's Republic of China
Cement seawater erosion test method
Published on.2019-10-18
2020-09-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the China Building Materials Federation.
This standard is under the jurisdiction of the National Cement Standardization Technical Committee (SAC/TC184).
This standard was drafted. China Building Materials Science Research Institute Co., Ltd., Ningbo Kehuan New Building Materials Co., Ltd., Jiangsu South
Tong Erjian Group Co., Ltd., Huanghe Survey Planning and Design Co., Ltd., Anhui Zhongtie Engineering Materials Technology Co., Ltd., Henan Huapu Building
Decoration Engineering Co., Ltd., China Resources Cement Technology Development Co., Ltd., Xiamen Aisiou Standard Sand Co., Ltd., China Communications One Public Administration Xiamen Inspection Technology
Co., Ltd., China Water Resources and Hydropower Eleventh Engineering Bureau Co., Ltd., Tiezheng Testing Technology Co., Ltd., Guangdong Academy of Building Research Group
Co., Ltd., China Communications Fourth Aviation Engineering Research Institute Co., Ltd., Shanghai Academy of Building Research, Nantong Bridge Engineering Co., Ltd., Nantong City
Building Science Research Institute Co., Ltd., Nantong University, Beijing Municipal Construction Group Co., Ltd., Beijing Nerde Intelligent Technology Co., Ltd.
Zhejiang Wannuo Construction Co., Ltd., Anhui Qixing Engineering Testing Co., Ltd., China Construction Second Bureau Second Construction Engineering Co., Ltd., Guangdong Guanyue Road
Bridge Co., Ltd., Jianyan Testing Group Co., Ltd., Guangdong Yuanda Water Conservancy and Hydropower Group Co., Ltd., Yangtze River Water Resources Commission, Yangtze River Scientific Research Institute,
China Construction Second Bureau Third Construction Engineering Co., Ltd., Hebei Construction Group Co., Ltd., Fujian Dongjian New Building Materials Technology Co., Ltd.
The main drafters of this standard. Wei Liying, Liu Chen, Yu Shugen, Yan Bilan, Ma Zhaomo, Ma Guoning, Yang Xiaodong, Wang Zhong, Zhang Jinliang, Ji Gencai,
Sun Zhisheng, Wu Xiangdong, Zheng Xu, Huang Hai, Chen Juan, Zheng Yi, Xiong Jianbo, Zhang Revolution, Lin Yongquan, Xie Renzhi, Huang Bin, Xie Shenghua, Yang Heming, Luo Wei,
Jiaohengxin, Su Lei, Li Fenghua, Yang Lixiang, Hao Jinxiu, Gao Xiumei, Cui Jiansheng, Cheng Zhang Jianing, Guo Fei, Zhang Huiyi, Zhang Baoyan, Xie Tian, An Huili,
Li Liansheng, Chen Yanping, Dong Wei, Zhou Shihua, Yao Yuanchao, Shi Dongku, Yang Jianhui, Li Zhaoxin, Wen Peiyan.
Cement seawater erosion test method
1 Scope
This standard specifies the principle, test conditions, reagents and materials, equipment, test body and test procedure of cement seawater erosion test method.
And test data processing.
This standard applies to the detection and evaluation of cement seawater erosion resistance.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 17671-1999 Cement mortar strength test method (ISO method)
JC/T 738-2004 Rapid test method for cement strength
JC/T 1086-2008 Cement chloride ion diffusion coefficient test method
3 Principle
The demolded cement mortar samples were cured in 50 ° C ± 1 ° C water for 7 days and then divided into two groups, one group immersed at a temperature of 20 ° C ± 1 ° C
The water is maintained to the specified age, and the other group is fully saturated with the simulated seawater erosion solution to conduct the dry-wet cycle test to the specified age.
The detection of the compressive strength retention rate (ratio of the compressive strength of the two groups of samples) was evaluated for the seawater erosion resistance of the cement.
4 test conditions
The temperature and humidity requirements of the laboratory shall comply with the requirements of 4.1 for the laboratory in GB/T 17671-1999.
5 reagents and materials
Unless otherwise stated, the reagents used should be no less than chemically pure.
5.1 Water. Clean drinking water. Class III water in accordance with GB/T 6682 is used in case of dispute.
5.2 Magnesium chloride (MgCl·6H2O).
5.3 Calcium chloride (CaCl2).
5.4 Potassium chloride (KCl).
5.5 sodium bicarbonate (NaHCO3).
5.6 Potassium bromide (KBr).
5.7 Sodium chloride (NaCl).
5.8 sodium sulfate (Na2SO4).
5.9 NaOH solution (0.1mol/L). Dissolve 4g of sodium hydroxide (NaOH) in water, dilute to 1L with water, and store in plastic bottle.
5.10 Sulfuric acid (15). 1 part by volume of concentrated sulfuric acid is mixed with 5 parts by volume of water.
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