超高韧性水泥基复合材料自愈合研究进展∗

摘要

在总结了最近几年国内外相关研究进展的基础上，对超高韧性水泥基复合材料(ECC)及裂缝自愈合进行了综述。着重介绍了裂缝自愈合的最大允许宽度限值以及自愈合机制。提出利用 ECC 所独具的对裂缝宽度的可控性及紧密细小的微裂纹、较低的水胶比及矿物掺合料的二次水化效应可实现其良好的自愈合特性。最后指出该研究领域所面临的挑战及今后的研究方向，为ECC裂缝自愈合的研究提供有价值的理论参考。%This paper summarizes engineered cementitious composites (ECC)materials and the self-healing of crack based on many domestic and international references.Maximum allowable width of crack and mechanism are emphatically introduced.Using its unique crack width control and tight micro-crack property combined with low water-binder ratio and pozzolanic effect of mineral admixtures to realize effective self-healing potential are put forward.Finally,the research challenges and further research direction in this field are pointed out,which provides valuable theoretical reference for crack self-healing research.