高延性纤维增强水泥基复合材料的研究进展及应用

PROGRESS AND APPLICATION OF ENGINEERED CEMENTITIOUS COMPOSITES

高延性水泥基复合材料(engineered cementitious composite,ECC)是经系统的微观力学设计,在拉伸和剪切荷载下呈现高延展性的一种纤维增强水泥基复合材料。综述了ECC的研究进展,介绍了配筋ECC结构的耐久性、安全性及可持续性等混凝土必须满足的关键性能。根据ECC近来的应用情况及在工程上推广应用的需要,总结了ECC长期性能方面的研究结果。

Engineered cementitious composite （ECC） is a fiber reinforced cement based composite material systematically designed on the basis of micromechanics and engineered to achieve high ductility under tensile and shear loading. ECC as an emerging construction material is overviewed. Emphasis is placed on the accumulated knowledge on durability, safety, and sustainability of reinforced ECC （R/ECC） structures, recognizing that the concrete of the future must meet these characteristics. In light of recent and future full-scale field applications of ECC, the limited studies on long-term performance of ECC are also summarized.