掺超细粉煤灰活性粉末混凝土的研究

采用525普能硅酸盐水泥、硅灰、超细粉煤灰、高效减水剂和标准砂等原材料及湿热养护工艺，可配制出抗压强度达200MPa的活性粉末混凝土，在掺入一定量的钢纤维后，活性粉末混凝土的抗压强度近250MPa，抗折强度达45MPa，对超细粉煤灰掺量、水胶比、砂胶比和钢纤维掺量等因素于掺超细粉煤灰活性粉末混凝土抗折、抗压强度的影响进行了详细的讨论。

Study on Reactive Powder Concrete with Ultra-pulverized Fly Ash

Based on the traditional technology and heat curing treatment, the reactive powder concrete (RPC), which has compressive strength of 200 MPa, was prepared with the raw materials of ordinary Portland cement, ultra pulverized fly ash, silica fume, superplasticizer and standard sand. When this RPC200 contains 3% steel fiber by volume, its compressive strength is about 250 MPa, and its flexural strength reaches 45 MPa. The effects of content of ultra pulverized fly ash, water binder ratio, sand binder ratio, and content of steel fiber on compressive strength and flexural strength of RPC were discussed in detail.