This standard specifies terms and definitions, technical requirements, test methods, inspection rules, packaging, delivery, storage and return of magnesite cement material modifiers.
This standard applies to five kinds of magnesite cement material modifiers: retarder, halogenide-resistant agent, coupling agent, defoaming agent, and hardening accelerating and flash setting agent.
2 Normative references
The following standard contains 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. 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 document referred to applies.
GB/T 176 Methods for chemical analysis of cement
GB/T 1345 The test sieving method for fineness of cement
GB 1,346 Test methods for water requirement of normal consistency, setting time and soundness of the portland cement
GB/T 2419 Test method for fluidity of cement mortar
GB/T 5069.1 Chemical analysis of magnesia and magnesia-alumina refractory materials - Gravimetric method for determination of loss on ignition
GB/T 5069.9 Chemical analysis of magnesia and magnesia-alumina refractory materials - Hydrogen peroxide photometric method for determination of titanium dioxide content spectrophotometry
GB/T 11970-1997 Test methods for bulk density, moisture and water absorption of aerated concrete
GB/T 17671 Test method of cement mortar strength
JGJ 63 Standard of water for concrete
QB/T 2605-2003 Industrial magnesium chloride
WB/T 1018 Industrial magnesium chloride for magnesium oxychloride cement products
WB/T 1019 Caustic burned magnesia for magnesium oxychloride cement products
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
magnesite cement material
a gas-hardening cement material of magnesium oxychloride double salt product formed by mixing active magnesium oxide with industrial magnesium chloride solution Products of paste, mortar and concrete based on magnesite cement materials are collectively referred to as magnesite composite products.
Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 5 Test methods 6 Inspection rules 7 Packaging, delivery, storage and return Annex A (Normative) Technical requirements for reference light-burned magnesium oxide used in performance testing of magnesite cement material modifiers Annex B (Normative) Technical requirements for reference industrial magnesium chloride used in performance testing of magnesite cement material modifiers Annex C (Normative) Detection method of resistance to moisture absorption and halogen efflorescence
