三峡工程掺粉煤灰混凝土性能试验研究

为保证三峡工程混凝土的质量，进行了掺粉煤灰的多个配合比的混凝土性能试验，主要研究了掺粉煤灰混凝土的单位用水量、抗压强度、抗渗性能、干缩性能、抗冻性能、绝热温升等项目。结果表明，在混凝土中掺入粉煤灰，不仅可以节约水泥，降低水泥水化热温升，而且可以改善新拌混凝土的工作性能，提高硬化混凝土的后期强度。

Test and study on the properties of the concrete mixing with fly-ash in the Three Gorges Project

In order to guarantee the quality of concrete for the Three Gorges Project, the tests on the properties of concrete with fly ash under the conditions of different mix proportions to study its main properties such as unit water consumption, compressive strength, impervious properties, shrinkage properties, frost-resisting properties, and thermal insulation and temperature rise. The research results showed when fly ash is added into concrete, it not only could save cement and reduce the temperature rise caused by the hydration heat of cement, but also could improve the working properties of newly mixed concrete and increase the later strength of hardening concrete.