1 Scope
This national standard specifies that common portland cements’ compositions, materials specifications, strength levels, technical specifications, test methods, test rules, packaging, marking, transportation, storage, etc..
This national standard is applicable to common portland cements.
2 Normative Reference
The following normative documents contain provisions which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the normative document referred to applies.
GB/T176 Methods for chemical analysis of cement (GB/T176-1996, eqv ISO680:1990)
GB/T203 Granulated blastfurnace slag used for cement production
GB/T750 Autoclave method for soundness of portland cement
GB/T1345 The test sieving method for fineness of cement (sieve processing method)
GB/T1346 Test methods for water requirement of normal consistency,setting time and soundness of the portland cement (GB/T1346-2001, eqv ISO9597:1989)
GB/T1596 Fly-ash used for cement and concrete
GB/T2419 Test method for fluidity of cement mortar
GB/T2847 Pozzolanic materials used for cement production
GB/T5483 Gypsum and hard gypsum
GB/T8074 Cement’s specific surface area test method (Blaine)
GB9774 Package bag of cement
GB12573 Cement’s sampling
GB/T12960 Examination of cement’s composition of certain amount
GB/T17671 Test method for the cement mortar’s strength level (ISO method) (GB/T17671-1999, idt ISO679:1989)
GB/T18046 Ground granulated blast furnace slag used for cement and concrete
JC/T420 Chemical analysis method of chloride in cement materials
JC/T667 Cement’s grinding aids
JC/T742 Rotary Kiln ash blended in cement
3 Terms and Definitions
The following terms and definitions are applicable to this national standard.
Common Portland cement:
It is a kind of cement matrix composed of Portland cement clinkers and appropriate gypsum, plus specified admixture.
4 Classifications
Common Portland cement specified in this national standard include Portland cement, ordinary Portland cement, slag Portland cement, Portland-Pozzolana cement, Fly-ash Portland cement and composite Portland cement. Compositions and codes of all kinds should comply with specifications in Article 5.1.
