Ordinary Portland Cement P.O42.5R

Items unit GB175-2007 Chinese standard controls parameter manufacturers standard Magnesium oxide (MgO,MAX,%) % ≤5.0 ≤4.5 Sulfur oxide (SO 3 ,MAX,%) % ≤3.5 ≤3.0 Loss on ignition (L.O.I.,MAX,%) % ≤5.0 ≤4.5 Fineness (MAX,%) % ≤10.0 ≤2.0 Time of Setting Initial set, (min, not less than) min ≥45 ≥120 Final set, (min, not more than) min ≤600 ≤270 Soundness Pat test Passed Passed Le Chatclier mm ≤5.0 ≤4.0 Bending strength 3days Mpa ≥4.0 ≥4.0 28days ≥6.5 ≥7.0 Compressive strength 3days Mpa ≥22.0 ≥22.0 28days ≥42.5 ≥48.0
Ordinary Portland Cement P.O42.5R