石灰石粉在水泥基材料中的作用及其机理  

The effect and its mechanism of calcium carbonate on the cement based materials

作　　者：杨华山[1] 方坤河[1] 涂胜金[1] 杨惠芬[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《混凝土》2006年第6期32-35,共4页Concrete

摘　　要：本文研究了石灰石粉在水泥基材料中的作用及其机理。分别考察了石灰石粉的细度对水泥基材料早期(7d和28d)和后期(28d后)抗压强度的影响。结果表明:在水化早期,石灰石粉加速了水泥的水化。而在后期,石灰石粉对水泥胶砂强度的贡献主要来源于其活性效应,即碳铝酸盐的形成,从而提高了水泥基材料的强度和耐久性。The effect and its mechanism of calcium carbonate on the cement based materials were studied in this paper. The relationship between fineness of limestone and early stress, long-term stress of the mortar were investigated respectively. Result show that the hydration of cement is accelerated by limestone flour at early ages. While the later stress is enhanced chiefly by activity of limestone as calcium aluminates monocarbonate are formed. So the stress and durability of the cement based materials are increased.

关 键 词：石灰石粉 成核 水化产物 碳铝酸盐 

分 类 号：TU528.04[建筑科学—建筑技术科学]