自修复混凝土研究进展

Progress in Study of Self-Repairing Concrete

智能混凝土是建筑材料与智能科技相结合的产物,是智能材料的一种。自修复混凝土是智能混凝土发展的高级阶段。混凝土在受力或其他因素的作用下,会出现裂缝,影响了混凝土的使用寿命。自修复混凝土在出现裂缝时,能自动分泌出粘结液并渗入裂缝中,使混凝土裂缝重新愈合,恢复甚至提高混凝土的性能。全面回顾了自修复混凝土的发展背景和国内外的研究现状,阐述了现今自修复混凝土研究与应用中存在的问题,通过深入分析,展望了自修复混凝土的发展趋势和应用前景。

The smart concrete, an intelligent material, is a composite of building materials and intelligent science. The appearance of self- repairing concrete indicates that the smart concrete has developed to a higher stage. When cracks appeared in concrete due to force or other factors, the useful life of concrete will decrease. When cracks appear, the self- repairing concrete will excrete phlegm. The phlegm flows into the cracks and makes them heal and restore, and it can even enhance the performance of concrete. This article reviews the development backgrotmd of the self- repairing concrete and the present research of the domestic and overseas. It also elaborates the existing problems of the present studies. Moreover, the development of tendency and the application prospect of the self- repairing concrete are forecast.