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五、石粉含量及细度模数选择有关混凝土成果分析(一)石粉含量的确定如前所述当 F·M=2。5～3范围变化时,棒磨机出口处石粉含量达21～14%。这么多的石粉能否使用,使用多少,这直接关系到人工砂产品利用率、粉料清理量、成本及混凝土的质量。试验得出,人工砂粉末,不同于一般河砂中小于0.15毫米颗粒。因为人工砂的粉末成分与所加工的岩石成分基本一致。从表5可见,主要成分是硅、铝、钙,能烧失的量很小。此
Fifth, the stone content and fineness modulus selection Analysis of the results of the concrete (A) to determine the content of stone powder As mentioned earlier when the F · M = 2.5 ~ 3 range changes, the outlet of the rod mill stone powder content of 21 to 14 %. The availability and use of so much stone dust is directly related to the utilization of artificial sand products, the amount of powder cleaning, the cost and the quality of the concrete. Tests have shown that artificial sand powder, different from the general river sand particles smaller than 0.15 mm. Because artificial sand powder composition and processed rock composition is basically the same. Can be seen from Table 5, the main component is silicon, aluminum, calcium, can burn a small amount. this