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| 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６０ＭＰａ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。 |
| 关键词: 粉煤灰 活性效应 高性能 混凝土 强度 |
| DOI： |
| 分类号:TU528.31 |
| 基金项目:国家“九五”重点科技基金 |
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| Influence of Fly Ash on Compressive Strength of HPC |
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YANG Jing QIN Wei zu
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| Abstract: |
| 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. |
| Key words: fly ash,strength ratio,reactivity, |
