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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
Potland Cement
