石灰石对矿渣水泥水化反应的作用及特性

Qualitative analysis on the hydration reaction of slag cement by limestone

为节约水泥熟料,对在矿渣水泥(简称P·S)中掺用石灰石的方法进行了试验。结果表明,P·S中C3S的早期水化反应率随石灰石粉的取代率和粉末度的增加而增加,龄期28 d的水化反应率则与P·S基本持平;C3A的水化反应率在龄期1 d内明显下降,但此后的水化反应率与P·S中C3A的水化反应率大致相同;石灰石主要在龄期7 d内参与水化反应,且与C3A的水化反应密切相关。

To save cement,making experiment with limestone added in slag cement.The result shows the early hydrated reaction rate of C3S increases with the increase of the replacement ratio and powder degree of limestone in slag cement, but the hydration reaction ratio is equivalent to slag cement at age of 28 days.The hydration reaction of C3A decreases in age of 1 days,but the hydration ratio is equivalent to C3A of slag cement later.The limestone participates at age of 7 day,and is related to the hydration of C3A.