class G HSR oil well cement

Inspectingitem Unit Standard requirement check result conclusion loss on lgnition %≤3.01.63 QualifiedInsoluble residue %≤0.750.59 QualifiedMgO %≤6.02.99 QualifiedSO3 %≤3.02.08 QualifiedC3S %≥48and≤5853.85 QualifiedC3A %≤8.01.66 QualifiedC4AF+2C3A %≤24.019.83 Qualifiedsodium oxide valent weight %≤0.750.66 Qualifiedwater cement ratio %4444 Qualifiedsoundness /pass QualifiedFree fluid %≤5.904.5 Qualified52 35.6MPa 15-30min consistance BC≤3013.0 QualifiedThickening time Min≥90and≤120105 Qualifiedpressive strength 38,ordinary pressure,8h MPa≥2.13.9 qualified60,ordinary pressure,8h MPa≥10.313.2 qualified