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简答题计算题:用负压筛测定某水泥细度时,已知过筛前水泥连称样盘重量是36.9g,过筛后筛余连称样盘重量是14.9g,称样盘重14.3g,负压筛的校正系数是0.97,则该水泥的细度是多少?
  • 解:(14.9-14.3)÷(36.9-14.3)×0.97×100%=2.6%
    已知某厂熟料化学成分为:SiO2:21.98%、Al2O3:6.12%、Fe2O3:4.31%、CaO:65.80%MgO:1.02%,计算其矿物组成(IM>0.64)。
    C3S=4.07C-7.60S-6.72A-1.43F
    =4.07×65.80%-7.60×21.98%-6.72×6.12%-1.43×4.31%
    =53.47%
    C2S=2.87S-0.754C3S
    =2.87×21.98%-0.754×53.47%
    =22.77%
    C3A=2.65A-1.69F
    =2.65×6.12%-1.69×4.31%
    =8.95%
    C4AF=3.04F
    =3.04×4.31%
    =13.10%
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