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Portland Cement GB175-2007 P.O 52.5
ITEMS Examine data Mandatory Targets Standard
MgO(%) Max4.0 Max5.0 GB/T 176-1996
SO3 (%) Max3.5 Max3.5 GB/T 176-1996
LOI(%) Max5.0 Max5.0 GB/T 176-1996
Fineness(80p m residue on sieve)(%) Max5.0 Max10.0 GB/T 1345-2005
Setting Time: Initial (min) Min45 Min45 GB/T 1346-2001
Setting Time: Final (min) Max600 Max600 GB/T 1346-2001
Soundness(pat test) qualified qualified GB/T 1346-2001
Strength (3 day):Bending Strength (Mpa) Min5.0 Min4.0 GB/T 17671-1999
Strength (3 day):Compressive Strength(Mpa) Min26.0 Min22.0 GB/T 17671-1999
Strength (28 day):Bending Strength (Mpa) Min7.5 Min7.0 GB/T 17671-1999
Strength (28 day):Compressive Strength(Mpa) Min55.0 Min52.5 GB/T 17671-1999