混凝土冻融循环破坏研究进展

Advance in Research on Damagement of Concrete Due to Freeze-thaw Cycles

本文对目前混凝土冻融破坏研究新进展进行了全面综述,介绍了已有的关于冻融破坏机理的几种假说,并且对静水压理论和渗透压理论的适用条件以及合理性提出了质疑。同时论述了孔结构、饱水度、含气量和环境条件对冻融破坏的影响,国内外冻融循环试验方法和判据以及预防冻融破坏的措施。

The advance in research on damagement of concrete caused by freeze-thaw cycles is reviewed. The existing hypotheses for deterioration of concrete due to freeze-thaw cycles is discussed, and there is doubt on the applicability and rationality of hydraulic pressure and osmotic pressure. The effect of pore structure, water saturation, air-entraining and environmental conditions on freeze-thaw damagement, the testing methods and criteria for freeze-thaw cycles and preventive measures are also presented.