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GB/T 23445-2025: Polymer-modified cement compounds for waterproofing membrane
Status: Valid
GB/T 23445: Evolution and historical versions
| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| GB/T 23445-2025 | English | 379 |
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Polymer-modified cement compounds for waterproofing membrane
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| GB/T 23445-2009 | English | 279 |
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Polymer-modified cement compounds for waterproofing membrane
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Standard similar to GB/T 23445-2025 GB/T 18244 | GB/T 19250 | GB 27789 | GB/T 23446 | GB/T 23440 | Basic data | Standard ID | GB/T 23445-2025 (GB/T23445-2025) | | Description (Translated English) | Polymer-modified cement compounds for waterproofing membrane | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q17 | | Classification of International Standard | 91.120.30 | | Word Count Estimation | 18,140 | | Date of Issue | 2025-12-02 | | Date of Implementation | 2026-07-01 | | Older Standard (superseded by this standard) | GB/T 23445-2009 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 23445-2025: Polymer-modified cement compounds for waterproofing membrane---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 91.120.30
CCSQ17
National Standards of the People's Republic of China
Replaces GB/T 23445-2009
Polymer cement waterproof coating
Published on 2025-12-02
Implemented on July 1, 2026
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 23445-2009 "Polymer Cement Waterproof Coatings". Compared with GB/T 23445-2009, the main differences are in the structural adjustments.
Aside from editorial changes, the main technical changes are as follows.
a) Terms and definitions have been changed (see Chapter 3, Chapter 3 of the.2009 edition);
b) The general requirements have been removed (see Chapter 5 of the.2009 edition);
c) Tensile strength (retention rate after water immersion treatment, retention rate after UV treatment) and elongation at break (retention rate after water immersion treatment, UV treatment) were removed.
The physical properties and bonding strength (water immersion treatment) and corresponding test methods are specified in sections 6.2, 7.4.6, 7.4.7, and 7.6.3.4 of the.2009 edition.
d) The sample preparation method has been changed (see 6.3.2, 7.4.2 of the.2009 version);
e) The low-temperature flexibility test method has been changed, and low-temperature flexibility technical requirements for Type II and Type III products have been added (see 5.2, 6.7,.2009 edition).
(6.2, 7.5)
f) The technical requirements for impermeability of Type III products have been deleted (see 6.2 in the.2009 edition);
g) Added technical requirements and corresponding test methods for the impermeability of Type III products (water-facing side of mortar) (see 5.2, 6.9);
h) The duration of the thermal aging test has been changed, and technical requirements for low-temperature flexibility after thermal aging and corresponding test methods have been added (see 5.2).
6.11 (6.2 and 7.4.4 of the.2009 edition);
i) Added testing items, technical requirements, and corresponding test results for "water resistance, artificial climate accelerated aging, flammability, and limits of hazardous substances".
Verification methods (see 5.2, 5.3, 6.13, 6.14, 6.15, 6.16);
j) Include impermeability (mortar backwater surface) as an optional performance characteristic (see 5.4, 6.2 in the.2009 edition);
k) The inspection rules have been changed (see Chapter 7, Chapter 8 in the.2009 edition);
l) Changes were made to the markings, packaging, transport, and storage (see Chapter 8, Chapter 9 in the.2009 edition);
m) The test methods for impermeability (backwater side of mortar) and self-sealing were modified (see Appendix A and Appendix B, Appendix A of the.2009 edition).
Appendix B).
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 Technical Committee on Standardization of Lightweight and Decorative Building Materials (SAC/TC195).
This document was drafted by. Henan Building Materials Research and Design Institute Co., Ltd., and Beijing CNNC Beiyan Technology Development Co., Ltd.
Beijing Oriental Yuhong Waterproof Technology Co., Ltd., Beixin Waterproof Co., Ltd., Shenzhen Xinheibao Building Materials Co., Ltd., Guangdong Badefu New Materials Co., Ltd.
Materials Co., Ltd., China Building Materials Testing & Certification Group Suzhou Co., Ltd., BASF (China) Co., Ltd., Shanghai Yuhong (Jinhu) Waterproofing Technology Co., Ltd.
Technology Co., Ltd., Fujian Three Trees New Materials Co., Ltd., Rifeng Technology Co., Ltd., Dega (Guangzhou) Building Materials Co., Ltd., Shanghai Weixing New Materials Co., Ltd.
Materials Technology Co., Ltd., Beijing Building Materials Testing and Research Institute Co., Ltd., Shanghai Jianke Testing Co., Ltd., Henan Academy of Sciences, and others.
Yan (Shanghai) Building Materials Co., Ltd., Keshun Waterproof Technology Co., Ltd., Henan Huarui Xingye Waterproof Technology Co., Ltd., Hubei Jiuyang
Waterproofing Materials Technology Co., Ltd., Mapei Building Materials (Guangzhou) Co., Ltd., Sino-German New Asia Building Materials Co., Ltd., Celanese (China)
Investment Limited Company, Shanghai Niuyuan Industry and Trade Co., Ltd., Xinjiang Keneng New Material Technology Co., Ltd., Meichao Group Co., Ltd., Wacker Chemie
Xue (China) Co., Ltd., Nippon Paint (China) Co., Ltd., Zhejiang Kelisen Chemical Co., Ltd., Guangdong Henghe Yongsheng Group Co., Ltd.
Guangdong Jianli Technology Co., Ltd., Zhengzhou Huisheng Materials Technology Co., Ltd., and Shandong Lanmeng Anticorrosion Technology Co., Ltd.
The main drafters of this document are. Wang Zhi, Hua Weidong, Li Wanyong, Zhou Yi, Xiong Weifeng, Bai Hongcheng, Wang Rongzhu, Liu Yan, Sun Jian, and Wang Huiping.
Pan Zhouxu, Long Fang, Shi Jiulong, Duan Shaohua, Wang Taotao, He Shuguang, Zheng Wei, Chen Lei, Gao Jue, Zhang Fan, Yu Jinmei, Fang Yong, Zhao Guowu, Liu Qijun
Zhou Weiling, Zhang Kai, Wei Wei, Wang Dan, Cao Dengyun, Zhu Haixia, Cen Zhijie, Sun Xiaolei, Mao Xiongwei, Li Wei, Wang Lijing, Zhao Jiancheng, Ma Da, Wan Chengliang
Tian Litong, Xu Huiguo, Zhang Chunguang, Ma Yan, Jiang Rui, Li Yuchun, Zhang Wei, Ren Yinxia, Cai Renna, Yu Jianqiang.
The release history of this document and the document it replaces is as follows.
---First published in.2009 as GB/T 23445-2009;
---This is the first revision.
Polymer cement waterproof coating
1 Scope
This document specifies the classification and marking, technical requirements, test methods, and inspection procedures for polymer cement waterproof coatings (hereinafter referred to as "JS waterproof coatings").
Rules and markings, packaging, transportation and storage.
This document applies to polymer cement waterproof coatings used in engineering waterproofing.
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 328.10-2007 Test methods for building waterproof membranes - Part 10.Impermeability of bituminous and polymer waterproof membranes
GB/T 328.14 Test Methods for Building Waterproofing Membranes Part 14.Low-Temperature Flexibility of Bituminous Waterproofing Membranes
GB/T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB 8076 Concrete Admixtures
GB 8624-2012 Classification of fire performance of building materials and products
GB/T 8626 Test Methods for Flammability of Building Materials
GB/T 16777-2008 Test Methods for Waterproof Coatings for Buildings
GB/T 18244-2022 Aging Test Method for Building Waterproofing Materials
GB 45671 Safety Technical Specification for Building Waterproof Coatings
JGJ/T 70 Standard for Test Methods of Basic Performance of Building Mortar
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Using polymer emulsions such as acrylate, vinyl acetate-ethylene, and butadiene-styrene as the main raw materials and cement, fillers and other additives are added.
It is a liquid-powder type flexible two-component water-based waterproof coating formulated with additives and cured into a film by water evaporation and reaction.
3.2
autistic self-closing
The ability of coating cracks to self-heal and seal under physical and chemical reactions in the presence of water, so that the coating cracks do not...
The duration of the re-seepage is indicated.
4.Classification and Labeling
4.1 Classification
The products are classified into Type I, Type II and Type III according to their physical and mechanical properties.
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