The effect of porous silicon rock powder mixing with ordinary Portland cement on properties of cement is studied.
研究了多孔硅质岩矿粉掺入到普通硅酸盐水泥中对水泥性能的影响。
2
The pyrite which lies in the foundation rock under Geheyan Project can cause an erosive action to the Portland cement grouting material used in the curtain grouting.