42.5 HSR sulfate resistance cement

Test ItemsunitNational standardTest resultconclusiontricalcium silicate%≤ 50.046.6Qualifiedtricalcium aluminate%≤ 3.02.3Qualifiedloss on lgnition%≤3.02.5Qualifiedmagnesium oxide%≤ 5.03.7Qualifiedsulfur trioxide%≤ 2.52.2QualifiedInsoluble residue%≤ 1.51.05QualifiedSpecific surfacem2/kg≥280423Qualifiedsoundness/qualifiedQualifiedinitial setting timeMin≥45170Qualifiedfinal setting timeMin≤600230QualifiedAlkali content*%≤0.6/QualifiedSulfate resistance%≤0.040.025Qualifiedbending strengthISO 3 daysMpa≥3.05.1Qualified28 days≥6.57.2QualifiedCompressive strength3 daysMpa≥15.024.0Qualified28 days≥42.546.0Qualified