Standard No.:	WB/T 1019-2002
English Name:	Caustic burned magnesia for magnesium oxychloride cement products
Chinese Name:	菱镁制品用轻烧氧化镁
Chinese Classification:	G13    Oxide and elementary substance
Professional Classification:	WB    Professional Standard - Material
ICS Classification:	71.060.20 71.060.20    Oxides 71.060.20
Issued by:	State Commission for Economic and Trade
Issued on:	2002-09-02
Implemented on:	2002-11-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	120.0
Delivery:	via email in 1~3 business day

Caustic burned magnesia for magnesium oxychloride cement products 1 Scope This standard specifies the grading, requirements, test methods, inspection rules, packaging, marking, transportation and storage of the caustic burned magnesia for magnesium oxychloride cement products. This standard is applicable to caustic burned magnesia made from magnesite (MgCO3) by calcination and grinding for oxychloride cement products. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the referenced document applies. GB/T 176-1996 Method for chemical analysis of cement (eqv ISO 680:1990) GB/T 1345-1991 Test method for fineness of cement - The 80μm sieve GB/T 1346-2001 Test methods for water requirement of normal consistency, setting time and soundness of the portland cements GB/T 5069.1-2001 Chemical analysis of magnesia and magnesia-alumina refractory materials - Gravimetric method for determination of loss on ignition GB/T 5070.7-1985 Magnesite-chrome refractories - Determination of magnesium oxide content - CyDTA volumetric method GB 12573-1990 Sampling method of cement GB/T 17671-1999 Method of testing cement - Determination of strength (ISO method) (idt ISO 679:1989) WB/T 1018-2002 Industrial magnesium chloride for magnesium oxychloride cement products YB/T 5206-1993 Caustic burned magnesia 3 Grading Caustic burned magnesia is divided into three designations of QM-85, QM-80 and QM-75 according to YB/T 5206, and the products are divided into superior product (A), first-class product (B) and qualified product (C) according to the content of active magnesium oxide and the physical and mechanical properties of its formulated magnesium oxychloride cement. 4 Requirements 4.1 Appearance quality Caustic burned magnesia of the same batch shall have the same color, and no caking by moisture is allowed. 4.2 Chemical composition They shall meet those specified in Table 1.

Foreword i 1 Scope 2 Normative references 3 Grading 4 Requirements 5 Test method 6 Inspection rules 7 Packaging, marking, transportation and storage Annex A (Normative) A newly developed method for analysis of active MgO content