摘要
探讨了粉煤灰在高性能混凝土中的活性效应及作用机理．通过试验研究得出，当水胶比为０．３５ 以下时，在水泥砂浆中掺入３０％ 粉煤灰，其强度比可达到０．９５ 以上；在混凝土中掺入５０％ 粉煤灰，其抗压强度可达到６０ ＭＰａ 以上，可见粉煤灰在高性能混凝土中能发挥较好的活性效应．
Reactivity effect and its mechanisms of fly ash in high performance concrete (HPC) were studied. Results showed when m W/( m C+ m FA ) is lower than 0.35, the mortar with 30% by mass of fly ash in cementitious has the compressive strength ratio more than 0.95, and the concrete with 50% by mass of fly ash in cementitious has the compressive strength at 28 d more than 60 MPa. It was proved that fly ash displays better reactivity effect in HPC.
出处
《建筑材料学报》
EI
CAS
CSCD
1999年第3期218-222,共5页
Journal of Building Materials
基金
国家"九五"重点科技基金
