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Portland cement for nuclear power engineering
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| GB/T 31545-2015 | English | 169 |
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Basic data
| Standard ID | GB/T 31545-2025 (GB/T31545-2025) |
| Description (Translated English) | Portland cement for nuclear power engineering |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | Q11 |
| Classification of International Standard | 91.100.10 |
| Word Count Estimation | 10,161 |
| Date of Issue | 2025-10-31 |
| Date of Implementation | 2026-11-01 |
| Older Standard (superseded by this standard) | GB/T 31545-2015 |
| Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China |
GB/T 31545-2025: Portland cement for nuclear power engineering
---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 91.100.10
CCSQ11
National Standards of the People's Republic of China
Replaces GB/T 31545-2015
Silicate cement for nuclear power engineering
Published on 2025-10-31
Implemented on 2026-11-01
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
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 31545-2015 "Silicate Cement for Nuclear Power Engineering". Compared with GB/T 31545-2015, the main differences are in the structural design.
Aside from integration and editorial changes, the main technical changes are as follows.
a) The "Calculation Formula" for clinker mineral composition has been deleted (see 4.1 in the.2015 edition);
b) The technical requirements for “natural gypsum” have been changed (see 4.2,.2015 edition of 4.2);
c) The technical requirements for "magnesium oxide" have been changed (see 6.1.1, 6.1 in the.2015 edition);
d) Increased the limits and corresponding test methods for water-soluble chromium (VI) in nuclear power plant cement (see 6.2, 7.3);
e) The technical requirements for “strength” have been changed (see 6.4.5, 6.10 in the.2015 edition);
f) The technical requirements for "heat of hydration" have been changed (see 6.4.6, 6.11 in the.2015 edition);
g) Increased limits on radionuclides in nuclear power plant cement and corresponding test methods (see 6.5, 7.10);
h) The numbering and sampling rules have been changed (see 8.1,.2015 version 8.1);
i) The inspection items have been changed (see 8.2, 8.3 in the.2015 edition);
j) The rules for determining the inspection results have been changed (see 8.3, 8.4 in the.2015 edition);
k) The requirements for inspection reports have been changed (see 8.4, 8.5 in the.2015 edition);
l) The regulations for inspection bodies have been changed (see 9.2 and 9.3, 8.6.2 of the.2015 edition);
m) Packaging regulations have been changed (see 10.1, 9.1 of the.2015 edition);
n) The regulations for the marking have been changed (see 10.2, 9.2 of the.2015 edition).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Building Materials Federation.
This document is under the jurisdiction of the National Cement Standardization Technical Committee (SAC/TC184).
This document was drafted by. China Building Materials Academy Co., Ltd., Anhui Conch Cement Co., Ltd., and China Nuclear Power Engineering Co., Ltd.
Cheng Co., Ltd., China Three Gorges Corporation, State Nuclear Power Planning & Design Institute Co., Ltd., CGN Engineering Co., Ltd.
China Nuclear Survey and Design Research Co., Ltd., Lingyuan Fuyuan Mining Co., Ltd., Jiahua Special Cement Co., Ltd., Jiangsu CNNC Hua
Xing Engineering Testing Co., Ltd., Shandong Electric Power Engineering Consulting Institute Co., Ltd., State Nuclear Power Demonstration Power Plant Co., Ltd., China Construction Second Engineering Co., Ltd.
Bureau Limited, Jiahua Jinping Special Cement Co., Ltd., China Power Engineering Consulting Group East China Electric Power Design Institute Co., Ltd., Shanghai
Nuclear Engineering Research and Design Institute Co., Ltd., Qingdao Building Materials Industry Association, Huaneng Shidaowan Nuclear Power Development Co., Ltd., Jiayuguan Qilian Mountain
Cement Co., Ltd., Huaxin Cement Co., Ltd., Wuhan Guinie Technology Co., Ltd., Guangxi Liuzhou Yufeng Cement Co., Ltd., Dalian Cement
Group Co., Ltd., Gezhouba Shimen Special Cement Co., Ltd., China National Testing & Inspection Group Co., Ltd., CNNC Concrete Co., Ltd.
Limited Liability Company, China Water Resources and Hydropower Third Engineering Bureau Co., Ltd., China Nuclear Northwest Construction Group Co., Ltd., Tangshan Jidong Cement Co., Ltd.
Company, Tangshan Jidong Cement Sanyou Co., Ltd., Hualong International Nuclear Power Technology Co., Ltd., China Energy Engineering Group Tianjin Electric Power Construction Co., Ltd.
Company, China National Testing & Inspection Holding Group Xuzhou Co., Ltd., Liaoning Transportation Cement Co., Ltd., Guangxi University, Jidong Cement Tongchuan Co., Ltd.
Company, Hefei University of Technology, Sichuan CNNC Airet Engineering Testing Co., Ltd., CNNC Energy Technology Co., Ltd., Zibo Luzhong Cement Co., Ltd.
Company, China National Building Materials Zhongyan Yi Technology Co., Ltd.
The main drafters of this document are. Wen Zhaijun, Chen Qinsong, Liu Min, Li Wenwei, Miao Changwei, Pei Xinyi, Li Huanrong, Wang Min, An Yumin, and Li Xinyu.
Zhang Shuijian, Qiu Lijun, Zhang Lijuan, Zhang Huaixu, Li Jianhai, Zhang Kunyue, Ma Shiwei, Ye Yongjian, Zhang Huaijun, Chu Yanchun, Jiang Shuqiang, Jiang Zhihua, Lei Zhenbin
Deng Yulian, Liu Shengzhong, Li Jingtang, Yang Lu, Liao Juan, Liu Xiangkun, Zheng Shixiang, Sui Chunguang, Liu Yulin, Li Shuguang, Yin Xiangnan, Wang Dingguo, Gao Xianshu
Yu Kexiao, Cui Ye, Zhang Yu, Li Junqiang, Wang Junqing, Wang Qi, Zhao Xujun, Tian Jianping, Wang Junfeng, Yang Zebo, Huang Aibin, Guo Ruizhen, Zhao Junyang
Yao Sufeng, Huang Wen, Deng Xikun, Kong Qingxun, Guo Jin, Pan Deng, Yang Huamei, Zhuan Xiangyang, Zhao Junhui, Yang Lüfeng, Guo Binglin, Gao Peng, Dong Tao, Feng Hao,
Zhang Lihua, Wang Ning, Zhang Hailong, Liang Quangang, Wang Zilong, Liu Qiang, Zhang Junhua, Yan Yan, Liu Xinyu, Zhang Jie, Lu Haijun, Zhang Jianping, Shao Yong, Wang Yougang
Huo Xiaoyang, Wang Huiqiang, Guo Suihua, Liu Yun, Yao Guang, Yu Yang, Shen Xin, Han Zhenyu, Sun Mingming.
This document was first published in.2015, and this is its first revision.
Silicate cement for nuclear power engineering
1 Scope
This document specifies the composition, materials, codes, strength grades, and technical specifications of silicate cement for nuclear power engineering (hereinafter referred to as "nuclear power cement").
Requirements, test methods, inspection rules, delivery and acceptance, packaging, marking, transportation and storage.
This document applies to nuclear power cement.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 176 Chemical Analysis Methods for Cement
GB/T 750 Test Method for Autoclaved Soundness of Cement
GB/T 1346 Test Methods for Standard Consistency Water Requirement, Setting Time and Soundness of Cement
GB/T 5483 Natural Gypsum
GB 6566 Limits of Radionuclides in Building Materials
GB/T 8074 Method for Determination of Specific Surface Area of Cement - Blaine Method
GB/T 9774 Cement Packaging Bags
GB/T 12573 Cement Sampling Method
GB/T 12959 Determination of heat of hydration of cement
GB/T 17671 Test method for strength of cement mortar (ISO method)
GB/T 21372 Silicate Cement Clinker
GB/T 26748 Cement Grinding Aids
GB 31893 Limits and Determination Methods for Water-Soluble Chromium (VI) in Cement
JC/T 603 Cement Mortar Drying Shrinkage Test Method
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Used in nuclear power engineering, it is made from silicate cement clinker of appropriate composition, with the addition of a suitable amount of gypsum, and finely ground to produce a product with moderate heat of hydration and low dryness.
Hydraulic cementitious materials with low shrinkage.
4.Components and Materials
4.1 Clinker
The content of tricalcium silicate (C3S) by mass fraction is not greater than 57.0%, and the content of tricalcium aluminate (C3A) by mass fraction is not greater than
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