高性能混凝土收缩裂缝影响因素及机理研究综述

A review of study on shrinkage and anti-cracking performance of high-performance concrete

与传统混凝土相比,现代商品混凝土具有大流动性和保坍性能,能满足远距离运输和泵送施工要求,但由于其组成材料的变化,高砂率和大流动性造成混凝土收缩裂缝的问题比较严重。本文总结了国内外科研人员的研究成果,分析了高性能混凝土收缩与开裂的机理及其影响因素,并提出相关解决办法。

Compared with the traditional concrete, modern reay-mixed concrete with high fluidity and slump retention performance, it can satisfy the long-distance transport and pumping requirements, due to changes in the composition of the materials, high sand ratio and high fluidity caused the shrinkage crack of concrete become a serious problem. This paper summarizes the research achievements of domestic and foreign researchers, the mechanism and influence factors of shrinkage and cracking of high performance concrete are analyzed, and put forwards some solutions.