【摘要】 研究了内掺粉煤灰量 ( % )对混凝土强度和流动性的影响 ,根据试验数据总结出掺粉煤灰混凝土 2 8d的强度规律 ,研究了掺粉煤灰混凝土的后期强度增长与粉煤灰掺量的关系。采用 42 5号普通硅酸盐水泥、超细Ⅰ级粉煤灰、高性能缓凝高效减水剂 ,能配制出 80MPa高强度大流动性混凝土更多还原

【Abstract】 The effect of the quantity of flyash inner doped(%) to concrete strength and fluidity was studied in this paper.According to the data obtained from the test,the rule of 28 day strength of concrete doped with flyash was summarized.The relation of the increment of later stage strength of concrete doped with the quantity of flyash added was studied. The 80 MPa high strength and great fluidity concrete can be prepared by 42.5 ordinary Portland cement,extra fine I grade flyash and high quality retarding high effect water-reducing agent.更多还原