Standard No.:	GB/T 23439-2017
English Name:	Expansive agents for concrete
Chinese Name:	混凝土膨胀剂
Chinese Classification:	Q12    Cement composite material and additives
Professional Classification:	GB    National Standard
ICS Classification:	91.100.30 91.100.30    Concrete and concrete products 91.100.30
Issued by:	AQSIQ; SAC
Issued on:	2017-12-29
Implemented on:	2018-11-1
Status:	superseded
Superseded by:	GB/T 23439-2017/XG1-2018 Expansive agents for concrete, includes Amendment 1
Superseded on:	2019-11-1
Superseding:	GB/T 23439-2009 GB 23439-2009 Expensive Agents for Concrete
Language:	English
File Format:	PDF
Word Count:	8500 words
Price(USD):	250.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the terms and definitions, classification and marking, requirements, test methods, inspection rules and Packaging, marking, transportation and storage of expansive agents for concrete. This standard is applicable to calcium sulphoaluminate hydrate, calcium hydroxide category and calcium sulphoaluminate hydrate-calcium hydroxide powder expansive agents for concrete. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies. GB/T 176 Method for chemical analysis of cement GB/T 700 Carbon structural steels GB/T 1345 The test sieving method for fineness of cement GB/T 1346 Standard test method for water requirement for normal consistency setting time and soundness of the Portland cement GB/T 1499.2 Steel for the reinforcement of concrete—Part 2:Hot rolled ribbed bars GB/T 4357 Cold-drawn non-alloy steel wire for springs GB/T 6003.1 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth GB/T 8074 Testing method for specific surface of cement—Blaine method GB 8076 Concrete admixtures GB/T 12573 Sampling method of cement GB/T 17671 Method of testing cements--Determination of strength GB/T 50081 Standard for test method of mechanical properties on ordinary concrete JGJ 63 Standard of water for concrete YB/T 5241 Iron-nickel, iron-nickel-cobalt of low expansion 3 Terms and Definitions

Foreword i Expansive agents for concrete 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification and Marking 5 Requirements 6 Test Method 7 Inspection Rules 8 Packaging, Marking, Transport and Storage Annex A A.1 General A.2 Test method A A.3 Test Methods B B.1 Brief B.2 Test Method A B.3 Test Method B Annex C Annex D