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GB/T 33803-2025: Technical specification for application of reinforced concrete corrosion inhibitor
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GB/T 33803-2017	English	379	Add to Cart	4 days [Need to translate]	Technical specification for application of reinforced concrete anti-corrosion inhibitor

GB/T 33803-2025: Technical specification for application of reinforced concrete corrosion inhibitor

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ICS 25.220.99 CCSA29 National Standards of the People's Republic of China Replaces GB/T 33803-2017 Technical Specification for Corrosion Resistance Application of Corrosion Inhibitors in Reinforced Concrete Published on 2025-12-02 Implemented on July 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4 Product Categories 2 5.Basic Requirements 2 6.Classification of Environmental Corrosion 2 7 Technical requirements for steel reinforcement corrosion inhibitors 2 8.Design and Application of Corrosion Inhibitors for Reinforcing Steel 4 9.Acceptance and Maintenance 4 Appendix A (Normative) Saltwater Immersion Test 6 Appendix B (Normative) Electrochemical Comprehensive Evaluation Test 7 Appendix C (Normative) Saltwater Immersion and Drying Test 9 Appendix D (Normative) Detection and Evaluation of Corrosion Resistance of Reinforcing Steel in On-Site Concrete Components 12 Appendix E (Normative) Classification of Environmental Corrosion Levels 14 Appendix F (Normative) Rapid Test Method for Rust Prevention Performance 17

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 supersedes GB/T 33803-2017 "Technical Specification for Corrosion Resistance Application of Corrosion Inhibitors in Reinforced Concrete" and is consistent with GB/T 33803-2017. Aside from structural adjustments and editorial changes, the main technical changes are as follows. a) The term "organic steel reinforcement corrosion inhibitor" and its definition have been removed (see 3.4 in the.2017 edition); b) The content on organic steel rebar rust inhibitors in the "Product Categories" section has been removed (see Chapter 4 of the.2017 edition); c) Standards for saline soil and saline-alkali areas have been added (see 5.1); d) The "Corrosion Mechanism under Normal Environments" section of Table 1 for reinforced concrete structures has been revised (see Table 1,.2017 edition); e) The technical indicators for "solid content, moisture content, and density" in Table 2 have been changed (see Table 2,.2017 edition), and "total alkali content" has been added. The upper limit of the "chloride ion content" increased the drying time (see Table 2); f) Added "Brine Immersion Test" (see Tables 3 and 4), deleted "Dry and Wet Cold and Heat Cycling Test" from Tables 3 and 4, and deleted... Table 4 shows the potential requirements for the salt water immersion test (see Tables 3 and 4 in the.2017 edition). g) The requirements and testing methods for "corrosion resistance coefficient K" in Table 6 have been changed, and the "wet-dry-cold-heat cycle test" has been replaced with the "salt water immersion test". "Experiments" (see Table 5, Table 6 in the.2017 edition); h) Tables 5 and 7 have been merged, "permeability height ratio" has replaced "impermeability", and the "slump retention value" requirement in Table 7 has been removed. (See Table 6, Tables 5 and 7 of the.2017 edition); i) The "dry and wet thermal cycling test" in Table 8 (see Table 8 in the.2017 edition) has been removed, and on-site testing and evaluation index requirements have been added. The technical requirements for "salt water immersion test, concrete chloride ion migration coefficient ratio, and penetration depth" have been added (see Table 7); j) The original regulations regarding the dosage of corrosion inhibitors for reinforcing steel bars have been deleted (see sections 8.1, 8.2, and 8.3 of the.2017 edition); k) Added product entry type inspection report and minimum usage requirements (see 8.3); l) A rapid test method for the rust-inhibiting performance of steel reinforcement rust inhibitors has been added (see 9.1.2), and regulations for inspection batches have been added (see 9.1.3). The following has been deleted. "In addition to testing the concrete performance according to relevant standards, specifications, and design requirements, its rust-inhibiting properties should also be tested according to Appendix F, and the admixtures should be added accordingly." The regulation states that "the rust area of steel bars treated with rust inhibitors should be reduced by more than 95% compared to steel bars without rust inhibitors" (see the.2017 edition). 9.1.2, 9.1.5); m) The requirements for the steel reinforcement material in the salt water immersion test have been changed, as has the preparation ratio of the saturated Ca(OH)2 solution (see Appendix A,.2017). Appendix A of the edition); n) The requirements for steel reinforcement material have been changed (see Appendix B, Appendix B of the.2017 edition); o) Change "Dry-wet-cold-heat cycle test of mortar samples" to "Salt water immersion test" (see Appendix C, Appendix C of.2017 edition); p) Added "When there are discrepancies in the test results, the current density of steel corrosion shall prevail" (see D.2.4); q) Appendix F, “Rapid Test Method for Rust Prevention Performance,” has been added, and the original Appendix F (see Appendix F, Appendix F of the.2017 edition) has been deleted. 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 Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee on Corrosion Control Standardization (SAC/TC381). This document was drafted by. Shenyang Zhongke Corrosion Control Engineering Technology Co., Ltd., North China University of Water Resources and Electric Power, Sichuan University of Science and Engineering, and Datang Telecommunications Engineering Co., Ltd. (Dulan) Clean Energy Co., Ltd., Guoneng Baoqing Coal-to-Chemical Co., Ltd., Wuhan Sanyuan Special Building Materials Co., Ltd., Henan Academy of Sciences Chemical Research Institute, China Metallurgical Testing & Certification Co., Ltd., China Nuclear Power Operation Management Co., Ltd., Guangdong Changda Road Maintenance Co., Ltd., China Railway No. 2 The Fourth Engineering Company of the Tenth Bureau Group, Zhejiang Kewei Building Materials Co., Ltd., Shijiazhuang Chang'an Yucai Building Materials Co., Ltd., and Beijing Jingang Road Engineering Construction Co., Ltd., Beijing Guruien Technology Co., Ltd., China Communications Construction Company Limited, Jiangsu Zhongkuangda Zheng Surface Engineering Technology Co., Ltd. Limited Company, China Corrosion Control Technology Association, Chifeng Hengcheng Construction Engineering Co., Ltd., China Construction Science & Industry Group Wuhan Co., Ltd., China Railway Construction Corporation Bridge Engineering Bureau Group Co., Ltd., Guangzhou No.1 Construction Group Co., Ltd., China 19th Metallurgical Construction (Chongqing) Co., Ltd., China Railway Seventh Bureau Group Co., Ltd. Nanjing Engineering Co., Ltd., Beijing Bihai Yunzhi New Material Technology Co., Ltd., Hubei Keying New Material Technology Co., Ltd., and China Corrosion International Corrosion Control Technology Research Institute (Beijing) Co., Ltd. The main drafters of this document are. Chen Bo, Li Weihua, Lin Xiuzhou, Liu Wanli, Yan Long, Zhang Xiaoping, Cao Wenkai, Jin Wei, Zhang Erning, and Jin Yanjun. Liu Zihao, Chen Xuedan, Li Haikuan, Lin Zhijie, Zhang Lijun, Yang Qing, Ji Xiankun, Fang Cheng, Wang Jinchun, Zhang Guangcan, Zhu Changrong, Wang Lubo, Liu Fuyun Wan Yu, Qin Pengfei, Li Jianjun, Hao Yi, Tao Ningyan, Geng Qingjun, Yin Min, Zhao Liyong, Qi Bo, Zhang Wei, Fan Lilong, Song Zhuo, Zheng Jiaming, Yao Jingcheng Wu Wenxuan, Zhong Chaoming, Xu Lili, Di Taishen, Guo Xiaoping, Xing Jun, Qi Bingxu, Xiao Feizhi, Lu Dehui, Zhang Yaolin. This document was first published in.2017, and this is its first revision. Technical Specification for Corrosion Resistance Application of Corrosion Inhibitors in Reinforced Concrete

1 Scope

This document specifies the product classification, basic requirements, environmental corrosion classification, technical requirements, and design and application of corrosion inhibitors for reinforced concrete. Application, acceptance and maintenance. This document applies to both new and repaired reinforced concrete works.

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 8076 Concrete Admixtures GB/T 8077 Test Method for Homogeneity of Concrete Admixtures GB 50021 Code for Geotechnical Investigation GB/T 50046 Standard for Corrosion Protection Design of Industrial Buildings GB/T 50082 Standard for Test Methods of Long-Term Performance and Durability of Concrete GB/T 50476 Standard for Durability Design of Concrete Structures GB/T 50942 Technical Specification for Construction in Saline Soil Areas JC/T 1011 Concrete Anti-corrosion and Insulation Agent JGJ55 Specification for Mix Proportioning Design of Ordinary Concrete JGJ/T 192 Technical Specification for Application of Corrosion Inhibitors for Reinforcing Steel YB/T 4390-2013 Standard for Quality Inspection and Evaluation of Anti-corrosion Coating for Steel Structures of Industrial Buildings

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 It can be added to concrete (or mortar) or applied to the surface of concrete (or mortar) to directly act on the reinforcing steel in the concrete (or mortar). Used as an admixture that can prevent or delay the corrosion of steel bars. 3.2 An admixture that prevents or delays the corrosion of steel bars in concrete (or mortar). Note. Based on their effects, rust inhibitors are classified into anodic rust inhibitors, which are mainly composed of inorganic salts, and composite rust inhibitors, which are mainly composed of organic compounds (alkanolamines or other types). 3.3 An admixture that prevents or delays the corrosion of steel bars in concrete (or mortar) and improves the resistance of concrete (or mortar) to sulfate attack. ...