在混凝土中掺加磨细的矿渣和粉煤灰,能填充水泥空隙,降低空隙体积,提高水泥浆体的流动性,提高水泥混凝土的密实性,提高抗渗性与耐久性,而且对建设节约型、环保型社会有重要意义。在钻孔灌注桩施工中采取了双掺矿物质掺合料的技术,就是使普通混凝土高性能化。文章通过在混凝土中粉煤灰和矿渣粉,并进行技术经济比较,效果显著,为桩基施工开辟了新的前景。 In the concrete mixed with fine slag and fly ash, can fill the cement gap, reduce the void volume and improve the fluidity of cement paste to improve the compactness of cement concrete, improve impermeability and durability, but also to save construction Type, environment-friendly society is of great significance. In the construction of cast-in-place bored piles double mineral admixture technology, is to make ordinary concrete high performance. Through the concrete fly ash and slag powder, and the technical and economic comparison, the effect is significant, for the pile foundation construction has opened up new prospects.