所以，在富胶凝材料碾压混凝土中可以用石粉取代部分粉煤灰，但人工砂中的石粉含量不宜超过20%。
A part of fly ash might be replaced with stone powder in high-paste RCC, but the content of stone powder in crushed sand should be not more than 20%.
所以，在富胶凝材料碾压混凝土中可以用石粉取代部分粉煤灰，但人工砂中的石粉含量不宜超过20%。
A part of fly ash might be replaced with stone powder in high-paste RCC, but the content of stone powder in crushed sand should be not more than 20%.
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