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Cement P.O52.5R CEMENT GB175-2007   SURVEY REPORT GB175-2007 P.O 52.5R   ITEMS Examine data  Mandatory Targets Standard MgO(%) Max4.0 Max5.0 GB/T 176-1999 SO3 (%) Max3.0 Max3.5 GB/T 176-1999 LOI(%) Max3.0 Max5.0 GB/T 176-1999 Fineness(80p m residue on sieve)(%) Max3.0 Max10.0 GB/T 1345-1991 Setting Time: Initial (min) 60-120 Min45 GB/T 1346-2001 Setting Time: Final (min) 120-230 Max600 GB/T 1346-2001 Soundness(pat test) qualified qualified GB/T 1346-2001 Strength (3 day):Bending Strength (Mpa) Min5.0 Min5.0 GB/T 17671-1999 Strength (3 day):Compressive Strength(Mpa) Min29.0 Min26.0 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