铝酸钙水泥的异常凝结行为  

On the anomalous setting behavior of calcium aluminate cement

作　　者：王传辉[1] 叶国田[1] 

机构地区：[1]洛阳工业高等专科学校,洛阳471003

出　　处：《耐火材料》1997年第4期235-237,共3页Refractories

摘　　要：硅酸盐水泥的水化速率总是随水化温度升高而增大。而在18～30℃范围内，铝酸钙水泥的水化速率随温度升高而降低，这就是所谓的铝酸钙水泥的异常凝结行为。通过比较工业铝酸钙水泥与合成纯铝酸钙的凝结行为，证明这种行为是铝酸钙水泥本身具有的，而不是掺入物引起的。铝酸钙水泥的异常凝结行为与其水化严物的结构、成核及生长等因素有关。本文还指出了对于这一现象有待进一步研究的问题。This paper reviews the anomalous setting behavior and its mechanisms. The hydration rate of silicate cements always increases with the hydration temperature. However, the hydration rate of calcium aluminate cements goes down with the increasing of hydration temperature in the temperature range of 18~ 30℃, this being the so-called anomalous behavior. The behavior is proved to be the intrinsic characteristic of the cements by comparing the setting behaviors of commercial calciumaluminate cements with those of synthesized pure calcium aluminates. The structure, nucleation and growth of the hydration products contribute to the behavior. The problems conceming the phenomenon are to be further investigated.

关 键 词：铝酸钙水泥 水化 凝结 水泥 耐火浇注料 

分 类 号：TQ175.732[化学工程—硅酸盐工业]