熟料矿物组成对阿利特–硫铝酸钡钙水泥性能影响的设计和研究

Design and Research on the Influence of Clinker Mineral Composition on the Properties of Alit-Baluminate Cement

本文主要研究熟料矿物组成对阿利特–硫铝酸钡钙水泥性能(流变性和膨胀性能、孔结构等)的影响。结果表明:不同矿物组成的阿利特–硫铝酸钡钙水泥浆体的剪应力随剪切速率的流变曲线不同,且两者之间的线性关系属于宾汉姆流变方程;膨胀率也有较大的不同,其中D矿物组成的膨胀率最大(如28 d膨胀率为0.0565%);不同矿物组成试样的孔径的分布和空隙大小、水化程度各不相同,其中:A试样的1 d、7 d和28 d的总孔隙率最小,分别分24.63%、20.06%和13.62%;A试样的1 d、7 d和28 d的水化程度最慢,分别分21.45%、41.26%和61.49%。

The paper studies the effect of clinker mineral composition on the properties (rheological and ex-pansion properties, pore structure, etc.) of alite-barium aluminate calcium cement. Results show that the shear stress of alit-barium aluminate calcium cement paste with different mineral com-position varies with the shear rate, and the linear relationship between them belongs to the Bing-ham rheological equation. The expansion rate is also quite different, the expansion ratio of D min-eral composition is the largest (Such as 28 d expansion rate of 0.0565%). The distribution and size of the pore size and the degree of hydration are different for different minerals. Among them: A sample 1 d, 7 d and 28 d of the total porosity is the smallest, divided into 24.63 percent, 20.06% and 13.62 percent, respectively. A sample of 1 d, 7 d and 28 d were the slowest hydropers, with 21.45%, 41.26% and 61.49%, respectively.