超高性能混凝土黏结力学性能研究进展

Research Progress on Bond Mechanical Properties of Ultra-high Performance Concrete

为了解超高性能混凝土(UHPC)与普通混凝土(NC)黏结力学性能,促进建立UHPC与NC修补结构的有限元分析,完善UHPC与NC界面黏结强度设计标准的制定,从UHPC与NC界面黏结力学性能机理及黏结力学性能影响因素方面进行研究,主要分析了基体界面处理情况、UHPC材料组分、外界环境对UHPC与NC黏结力学性能的影响。基于现有NC界面黏结强度计算模型,总结了UHPC与NC界面黏结抗剪强度表达式,并对UHPC与NC界面黏结性能研究进行展望。

In order to understand the bonding mechanical properties of ultra-high performance concrete(UHPC) and ordinary concrete(NC), promote the establishment of finite element analysis of UHPC and NC repair structures, and improve the formulation of design standards for bonding strength between UHPC and NC, this paper reviews the mechanism of bonding mechanical properties between UHPC and NC and the influencing factors of bonding mechanical properties. The effects of matrix interface treatment, UHPC material composition and external environment on the bonding mechanical properties of UHPC and NC were analyzed. Based on the existing calculation model of NC interface bonding strength, this paper summarizes the expression of UHPC and NC interface bonding shear strength, and prospects the research on UHPC and NC interface bonding performance.