石粉用作混凝土掺合料的初探

本文采用比表面积、扫描电镜、活性指数和减水剂吸附量等方法分析了石粉的基本性质,并试验研究了石粉等量取代水泥和粉煤灰的混凝土性能。结果表明:石粉可以作为混凝土掺合料,但宜与粉煤灰复合使用,其取代粉煤灰的掺量不应超过25%。

Preliminary Study on Limestone Powder as Concrete Additive

The paper analyzed the basic properties of limestone powder by using the following four methods:surface area comparisons,scanning electron microscope comparisons,activity index comparisons,super-plasticizer adsorption comparisons.Then,experiments have been done to study the concrete performance by using a same amount of limestone powder or fly ash to substitute the same amount of cement.The results showed that limestone powder,though,can be used as concrete additive,should be used together with fly ash The ...