(OPC) ORDINARY PORTLAND CEMENT（CHINESE STANDARD:GB175-1999）

项目 P.O42.5R(STANDARD:GB175-1999) 工厂指标FACTORY
Standard P.O42.5R(STANDARD:GB175-1999) actual data
MgO ≤5.0% ≤3.0%
SO3 ≤3.5% ≤3.0%
Loss on Ignition ≤5.0% ≤4.5%
Fineness ≤10.0% ≤8.0%
Initial Setting Time >0:45 h:min >0:60h:min
Final Setting Time ≤10:00 h:min ≤4:00h:min
Bending Strength 3 days >3.50 Mpa >4.0Mpa
Bending Strength 28 days >6.5 Mpa >7.0Mpa
Compressive Strength 3days >21.0 Mpa >24.0Mpa
Compressive Strength 28days >42.5 Mpa >48.0Mpa
Soundness Up to grade Up to grade
Conclusion: