Standard No.:	GB/T 21372-2024
English Name:	Portland cement clinker
Chinese Name:	硅酸盐水泥熟料
Chinese Classification:	Q11    Cement
Professional Classification:	GB    National Standard
ICS Classification:	91.100.10 91.100.10    Cement. Gypsum. Lime. Mortar 91.100.10
Source Content Issued by:	SAMR; SAC
Issued on:	2024-3-15
Implemented on:	2024-10-1
Status:	valid
Superseding:	GB/T 21372-2008 Portland cement clinker
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	210.0
Delivery:	via email in 1 business day

GB/T 21372-2024 Portland cement clinker 1 Scope This document specifies the classification, technical requirements, test methods, acceptance rules, delivery and acceptance, transportation and storage of portland cement clinkers (hereinafter referred to as "cement clinkers"). This document applies to the production, inspection, delivery and acceptance of portland cement clinker for trade. 2 Normative references The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 175 Common portland cement GB/T 176 Methods for chemical analysis of cement GB/T 749 Test method for determing capability of resisting sulfate corrode of cement GB/T 750 Autoclave method for soundness of portland cement GB/T 1345 The test sieving method for fineness of cement GB/T 1346 Test methods for water requirement of normal consistency, setting time and soundness of the portland cement GB/T 5483 Natural gypsum GB 6566 Limits of radionuclides in building materials GB/T 8074 Testing method for specific surface of cement - Blaine method GB/T 12959 Test methods for heat of hydration of cement GB/T 17671 Test method of cement mortar strength (ISO method) GB/T 30760 Technical specification for co-processing of solid waste in cement kiln GB/T 30810 Test methods for leachable ions of heavy metals in cement mortar GB 31893 Limit and determination of the water-soluble chromium (Ⅵ) content for cement 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 portland cement clinker product in which calcium silicate is the main mineral constituent, obtained by calcining raw materials of suitable composition until they are partially molten 4 Classification Cement clinker is divided into general-purpose cement clinker, low-alkali general-purpose cement clinker, medium sulphate-resistant cement clinker, high sulphate-resistant cement clinker, cement clinker for road, moderate-heat portland cement clinker and low-heat portland cement clinker according to its use and characteristics.

Contents Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 Technical requirements 6 Test methods 7 Acceptance rules 8 Delivery and acceptance 9 Transportation and storage