水化热抑制剂的研究现状与应用前景

Progress in Research and Application of Temperature Rising Inhibitor

大体积混凝土由于水化放热量大会产生一系列裂缝危及结构的安全性,近年来采用添加水化热抑制剂的方式降低水泥水化的放热速率,从而控制温度裂缝的产生。本文总结了不同种类水化热抑制剂(尿素、糖类及其衍生物、淀粉糊精类、相变材料)的作用机理,以及对混凝土工作性能、力学性能和微观结构的影响规律,还有有限元模拟的研究现状。最后分析了水化热抑制剂现阶段存在的不足与问题,对未来的研究方向进行了展望。

Mass concrete will produce a series of cracks due to great hydration heat,which endangers the safety of the structure.In recent years,the heat release rate of cement hydration is reduced by adding temperature rising inhibitor,so as to reduce the occurrence of temperature cracks.This paper summarizes the effect and mechanism of different kinds of temperature rising inhibitor(urea,glucide and its ramification,amylodextrin,phase change materials),as well as the influence on the working performance,mechanical properties and microstructure of concrete,and the current situation of finite element simulation.At the same time,this paper analyzes the existing shortcomings and problems of temperature rising inhibitor,and puts forward the research direction and prospect of temperature rising inhibitor.