ECC与混凝土界面黏结性能的研究进展

Research process of ECC and concrete interface bonding properties

ECC是一种具有应变硬化和多缝开裂特征的乱向分布短纤维增强水泥基复合材料,由于价格昂贵,一般用在结构的关键部位或是加固补强中,因此,ECC与混凝土界面的黏结性能好坏直接影响着它的使用。ECC与混凝土界面的黏结性能主要包括界面的劈拉强度、抗剪强度、抗折强度和断裂韧度四个方面。综述了目前ECC与混凝土界面的研究进展,提出了进一步研究的方向。

ECC（ engineered cementitious composites） is a class of disordered short fiber reinforced cementitious composites ,character- ized as strain hardening and multiple cracking.Due to its high price,ECC is usually used in key parts of the structure and structure retro- fit.Thus, the interracial bond properties of ECC and concrete will directly influence its application.The bond properties of ECC and con- crete include interfacial tensile strength, shear strength, bending strength and fracture toughness. It provided an overview of current research process of ECC and concrete interface and put forward the direction of future research.