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GB/T 45931-2025Construction waste recycled aggregate and inorganic mixture for highway (English PDF)

公路用建筑垃圾再生集料及无机混合料

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

June 30, 2025

Implementation date

January 1, 2026

Scope

GB/T 45931-2025 is the English-translated version of 公路用建筑垃圾再生集料及无机混合料.

GB/T 45931-2025 is the Chinese national standard covering crushed demolition rubble used as road base rather than landfill — the categories by concrete aggregate content, the debris and light debris that have to be counted because brick, wood and plastic behave nothing like concrete, the sand equivalent, the unconfined compressive strength of the inorganic mixture, the freeze-thaw strength ratio, the inspection rules, and the transport and storage. First edition, in force from 1 January 2026. Issued on 30 June 2025, it has been in force since 1 January 2026.

Document preview — GB/T 45931-2025

National Standard of the People's Republic of China

ICS: 93.080.20
Classification: Q 20

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Categories2
5 Technical Requirements2
6 Test methods6
7 Inspection Rules7
8 Marking, transportation and storage9
Appendix A (Normative) Test method for debris content and concrete aggregate content10
Appendix B (Normative) Test method for light debris content12
Appendix C (Normative) Sand Equivalent Test Method13
Appendix D (Normative) Unconfined compressive strength test method16
Appendix E (Normative) Freeze-thaw cycle compressive strength ratio test method18
Reference20

Foreword

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.

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 was proposed and coordinated by the National Technical Committee for Standardization of Transportation Engineering Facilities (Highway) (SAC/TC223).

This document was drafted by: Beijing Municipal Transportation Comprehensive Law Enforcement Corps, Beijing Municipal Transportation Commission, Beijing University of Civil Engineering and Architecture, Beijing University of Technology Beijing Construction Engineering Resources Recycling Co., Ltd., Beijing Municipal Engineering Design and Research Institute Co., Ltd., Harbin Institute of Technology, Guangdong University of Technology West China University, China Communications First Highway Engineering Bureau Group Co., Ltd., Beijing Zhongtian Road Industry Technology Co., Ltd., Gansu Provincial Transportation Planning, Survey and Design Institute Co., Ltd.

Company, Tianjin Highway Development Service Center, Sichuan Transportation Survey and Design Institute Co., Ltd., Hebei University of Technology, Zhejiang Huanyu Construction It has established Group Co., Ltd., Tianjin Tianhe Jianling Road and Bridge Engineering Technology Co., Ltd., Lu'an Gongxin Road Materials Co., Ltd., Huitong Construction Group Co., Ltd., Zhejiang Transportation Science Research Institute, Nanjing Traffic Engineering Testing Co., Ltd., Beijing Shoufa Expressway Construction Co., Ltd.

It has established a management limited liability company, Beijing Municipal Engineering and Construction Road and Bridge Co., Ltd., and Jilin Province Building Materials Industry Design and Research Institute.

The main drafters of this document are: Xue Zhongjun, Zhou Xuli, Wang Jiani, Li Xinghai, Wang Chunming, Song Bo, Wang Miao, Zhang Jinxi, Liu Zijian, Zhang Lei, Guo Hua, Li Xiaomin, Pan Keming, Meng Yongjun, Li Tinggang, He Qiang, Li Meng, Jiao Xiaolei, Zhao Xiaotao, Huang Wanqing, Qiao Jiangang, Zhang Xinwen, Du Kuilin, Zhang Rui, Zheng Jianling, Du Anwen, Cheng Chao, Chi Fengxia, Jiang Yun, Weng Wei, Gu Dapeng, Guo Meng, and Lu Qiang.

Recycled aggregates and inorganic mixtures from construction waste for highway use

1 Scope

This document specifies the classification, technical requirements, test methods, inspection rules and standards for recycled aggregates and inorganic mixtures used in highway construction waste.

Recording, transportation and storage.

This document applies to the production and inspection of recycled aggregates and inorganic mixtures from construction waste for highway use.

2 Normative references

GB/T 2611

GB/T 3159

GB/T 14684

GB/T 14685-2022

GB/T 38989

GB/T 50123-2019

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 construction wasteconstruction waste

A general term for construction debris, construction mud, construction waste, demolition waste and decoration waste.

Note. This includes waste soil, waste materials and their waste generated during the construction, reconstruction, expansion and demolition of various buildings, structures, pipe networks, etc., as well as residents’ house decoration and renovation.

Other solid wastes do not include construction waste that has been inspected and identified as hazardous waste.

3.2 recycled aggregate recycledaggregate

Aggregates made from construction waste through processes such as sorting, impurity removal, crushing, and screening.

3.3

The percentage of concrete blocks and stone materials with recycled aggregates with a particle size of 4.75 mm or more in the total mass.

3.4

Concrete aggregate content is greater than or equal to 90% recycled aggregate.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 50123-2019

Editions of GB/T 45931

Edition	Title	Revision	Status
GB/T 45931-2025	Construction waste recycled aggregate and inorganic mixture for highway	current edition	Current

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