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GB/T 45778-2025 English PDF

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US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45778-2025: Test method for determining chemical shrinkage of cement paste
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45778-2025	189	Add to Cart	3 days	Test method for determining chemical shrinkage of cement paste	Valid

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Basic data

Standard ID: GB/T 45778-2025 (GB/T45778-2025)
Description (Translated English): Test method for determining chemical shrinkage of cement paste
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q11
Classification of International Standard: 91.100.10
Word Count Estimation: 9,982
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45778-2025: Test method for determining chemical shrinkage of cement paste

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT45778-2025
National Standard of the People's Republic of China ICS 91.100.10CCS Q 11 Test method for chemical shrinkage of cement paste Released on June 30, 2025 2026-01-01 implementation State Administration for Market Regulation The National Standardization Administration issued

Preface

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee on Cement Standardization (SAC/TC 184). This document was drafted by. China Building Materials Science Research Institute Co., Ltd., Guangzhou Building Materials Industry Research Institute Co., Ltd., Zhejiang Jiangyicheng Testing Co., Ltd., China Railway Seventh Bureau Group Wuhan Engineering Co., Ltd., Guangdong Zhidao Advanced Civil Engineering Materials Technology Research Co., Ltd., Meizhou Quality Metrology Supervision and Inspection Institute of Guangdong Province, Guangdong Tianxin Electric Power Engineering Inspection Co., Ltd., Chongqing Traffic Engineering Quality Inspection Co., Ltd. Company, Beijing Jiutongqu Testing Technology Co., Ltd., Henan Communications Vocational and Technical College, Jiangsu Fangjian Quality Appraisal and Testing Co., Ltd., Guangdong Huihe Engineering Testing Co., Ltd., Foshan Sanshui District Construction Engineering Quality Testing Station, Jiangxi Huaheng Engineering Testing Co., Ltd., Guangzhou Cheng Anluqiao Testing Co., Ltd., Zhejiang Huazheng Testing Co., Ltd., China Railway Construction Investment Testing and Inspection Co., Ltd., CCCC Second Harbor Engineering Bureau Co., Ltd. Company, CCCC First Harbor Engineering Survey and Design Institute Co., Ltd., Zhuji Hongtai Engineering Inspection Co., Ltd., China Railway Shanghai Engineering Bureau Group Co., Ltd. Co., Ltd., Cangzhou Jingtong Engineering Testing Co., Ltd., Guangxi Communications Construction Engineering Testing Consulting Co., Ltd., China Communications First Highway Engineering Bureau Haiwei Engineering Construction Co., Ltd. Co., Ltd., Xinjiang Fukang Tianshan Cement Co., Ltd., Nanjing Gongda Construction Engineering Technology Co., Ltd., China 22nd Metallurgical Group Co., Ltd., Zhejiang Xinze Engineering Testing Co., Ltd., China Water Resources and Hydropower Third Engineering Bureau Co., Ltd., Hubei Zhengping Water Conservancy and Hydropower Engineering Quality Testing Co., Ltd. Co., Ltd., Guangdong Yihua Traffic Engineering Testing Co., Ltd., Shentie Fangyuan Testing Technology Co., Ltd., China Railway 24th Bureau Group Bridge Construction Co., Ltd. Co., Ltd., Suzhou Xiangcheng Testing Co., Ltd., Huizhou Water Group Zhenzhun Testing Center Co., Ltd., Jiangsu Yuheng Engineering Quality Testing Co., Ltd. Co., Ltd., Shanxi Transportation Construction Engineering Quality Inspection Center (Co., Ltd.), Shandong Jinchao Ronghui Testing Technology Co., Ltd., Zhejiang Gutai Engineering Testing Technology Co., Ltd., Henan China Construction Western Construction Co., Ltd., China Railway Construction Group Co., Ltd. Hainan Branch, CCCC Wuhan Zhi International Engineering Consulting Co., Ltd., Tianjin Xinhai Petroleum Engineering Technology Co., Ltd., Sujiaoke Group Testing and Certification Co., Ltd., Hefei China Construction Ready-mixed Concrete Co., Ltd., Zhejiang Erjian Construction Group Co., Ltd. The main drafters of this document are. Xiao Zhongming, Yang Zhan, Jin Hao, Xie Zhengfen, Luo Huasong, Wang Jinsong, Zhang Xinsheng, Zhang Yulu, Tang Qiuqin, Shao Jinggan, Du Mengyun, Jia Yuan, Mo Weiqiang, Ren Chaojun, Lü Qi, He Zujun, Wu Jinguo, Li Yanqing, Li Feng, Mingxin, Cao Shengmin, Zhao Jun, Li Shuai, Wang Xinrong, Xu Quanhui, Fan Mengmeng, Yang Yonghong, Liu Deping, Chen Li, Ning Xiangbo, Wang Benliu, Wang Yongzhou, Zhang Weijun, Sun Bing, Zheng Yaohua, Wu Chengzhang, Dai Gang, Wu Hao, Wang Shan, Su Jing, Zhang Xianling, Wu Xiangling, Yang Hui, Liu Wen, Zhang Kun, Li Yang, Gu Rui, Zhu Ying, Xiang Junmei, Bai Yanxia, Wang Jiaming, Qian Chongcang, Kou Xiaojian, Huang Youjun, Jiang Yu, Li Hongsheng, Song Yaya, Zhou Jianhua, Wang Haobin, Zhang Xiao, Zhou Heng, Yu Qingru, Han Xiuqing, Dong Hao, Xia Dahui, Ma Yonglong, Guo Junping and Li Yameng. Test method for chemical shrinkage of cement paste

1 Scope

This document gives the principles of the test method for chemical shrinkage of cement paste, describes the test method, specifies the test room and equipment, materials and Repeatability and reproducibility of materials and methods. This document applies to chemical shrinkage testing of Portland cement pastes. Note. The test methods for chemical shrinkage of cement paste are divided into absolute volume method and apparent volume method.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 6682 Specifications and test methods for water used in analytical laboratories HG/T 2723 Latex colored balloons JC/T 729 Cement paste mixer JC/T 959 Cement mortar specimen curing box

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Chemical shrinkage of cement paste Volume shrinkage of cement paste due to the hydration reaction between cement particles and mixing water.

4 Principles of the Method

During the process of cement and water reacting to form hydration products, the solid phase volume in the cement-water system gradually increases, but the overall volume of the cement-water system The chemical shrinkage of cement paste can be obtained by measuring the change of water level in the pipette. 5.Laboratory and Equipment 5.1 Laboratory The temperature in the laboratory should be maintained at 20℃±2℃ and the relative humidity should not be lower than 50%. 5.2 Equipment 5.2.1 Balance 5.2.1.1 The maximum weighing range shall be no less than 500 g, and the graduation value shall be no greater than 0.01 g; 5.2.1.2 The maximum weighing range shall not be less than 1 000 g, and the graduation value shall not be greater than 0.1 g. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45778-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45778-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45778-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45778-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.