Standard  ChinaGB175??1999 standard
Standard value  Ordinary Portland cement 32.5  Ordinary
42.5
item  Standard value  Protect value  Standard value  Protect value
Fineness(%)??  10.0  5.0  10.0  5.0
Initial(h:min) Setting Time  ??  45  180+60  45  180+60
SettingTime Final(h:min) ??  600  210+60  600  210+60
Invariability(boil)  Need up to grade  Up to grade  Need up to grade  Up to grade
Bending Strength 3 days(Mpa)??  2.5  3.5  3.5  4.5
Bending Strength 28 days(Mpa)??  5.5  6.0  6.5  7.0
Compressive Strength 3 days(Mpa)??  11.0  17.0  16.0  24.0
Compressive Strength28 days(Mpa)??  32.5  37.0  42.5  46.0
No-solvent goods  ..  ..  ..  ..
Loss on Ignition(%)??  5.0  5.0  5.0  5.0
MgO(%)??  5.0  5.0  5.0  5.0
SO3(%)??  3.5  3.5  3.5  3.5
Mixed goods??  15  15  15  15
Standard  ChinaGB175??1999 standard
Standard value  Compound  cement 32.5  Ordinary Portland cement 42.5R
item  Standard value  Protect value  Standard value  Protect value
Fineness(%)??  10.0  5.0  10.0  5.0
Initial(h:min) Setting Time  ??  45  180+60  45  180+60
SettingTime Final(h:min) ??  600  210+60  600  210+60
Invariability(boil)  Need up to grade  Up to grade  Need up to grade  Up to grade
Bending Strength 3 days(Mpa)??  2.5  3.5  4.0  4.5
Bending Strength 28 days(Mpa)??  5.5  6.0  6.5  7.0
Compressive Strength 3(Mpa??  11.0  160  21  250
Compressive Strength28 days(Mpa)??  32.5  360  42.5  46.0
No-solvent goods  ...  ....  ....  ...
Loss on Ignition(%)??  /  /  5.0  5.0
MgO(%)??  5.0  5.0  5.0  5.0
SO3(%)??  3.5  3.5  3.5  3.5
Mixed goods??  /  /  15  15