锈蚀对钢筋与混凝土之间粘结性能影响研究综述  

A Review of the Impact of Corrosion on the Bond Performance BetweenReinforcemnt and Concrete

作　　者：黄晋 卢微然 殷成龙 付传清[2] HUANG Jin;LU Weiran;YIN Chenglong;FU Chuanqing(College of Urban Construction,Zhejiang Shu ren University,Hangzhou 310015,China;College of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]浙江树人学院城建学院,杭州310015 [2]浙江工业大学土木工程学院,杭州310014

出　　处：《材料导报》2024年第S01期220-231,共12页Materials Reports

基　　金：国家自然科学基金(51978620)。

摘　　要：钢筋锈蚀导致横截面积减少,同时锈蚀产物体积膨胀导致混凝土开裂和剥落,影响混凝土与钢筋的粘结能力,对混凝土结构的承载能力和使用寿命产生影响。本文基于国内外广泛的研究成果,分析了不同钢筋锈蚀实验方法的优劣和适用性。对于锈蚀钢筋与混凝土的粘结性能,探讨了中心拉拔试验、偏心拉拔试验和梁式试验的优劣。分别研究了纵筋和箍筋锈蚀对粘结强度的影响,并构建了以钢筋锈蚀率为基础的粘结强度退化模型。锈蚀导致的表面裂缝宽度是评估粘结强度的理想参数,然而基于裂缝宽度的粘结强度退化模型仍然相对较少。在锈蚀钢筋粘结应力-滑移本构模型方面,对未锈蚀和锈蚀钢筋混凝土构件的粘结-滑移关系进行了阐述,然而由于锈蚀钢筋的粘结-滑移曲线测试数据有限,上述模型的可靠性尚未得到验证。本文综述了国内外有关钢筋锈蚀方法和锈蚀钢筋混凝土构件粘结性能的研究方法,分析了纵筋和箍筋锈蚀对粘结强度退化的影响,并归纳总结了基于钢筋锈蚀率和构件表面锈胀裂缝宽度的粘结强度退化模型、以及钢筋混凝土构件粘结-滑移本构关系的最新研究成果。同时,分析了现有研究的不足之处,旨在为未来的钢筋混凝土粘结性能研究提供参考。The corrosion of reinforcement in concrete can lead to a reduction in cross-sectional area,causing cracking and spalling.This,in turn,affects the bond capacity between the concrete and reinforcement,ultimately impacting the load-bearing capacity and service life of concrete structures.This paper critically examines the advantages,disadvantages,and applicability of different experimental methods used to study the corrosion of reinforcing bars.The research conducted for this study is comprehensive,encompassing both domestic and international sources.The study evaluates the merits and drawbacks of three specific tests:the center pullout test,eccentric pullout test,and beam test.These tests are specifically focused on investigating the bond properties between corroded reinforcement and concrete.Additionally,the effects of longitudinal bar corrosion and stirrup corrosion on bond strength are analyzed separately.A bond strength degradation model,which is established based on the corrosion rate of reinforcement,is also presented.While the surface crack width induced by corrosion serves as an ideal parameter for evaluating bond strength,there is a lack of bond strength degradation models that utilize crack width.Furthermore,the paper describes the bond stress-slip constitutive modeling of corroded reinforcement,focusing on the bond-slip relationship of uncorroded and corroded reinforced concrete members.However,the reliability of these models has yet to be verified due to the limited availability of test data on bond-slip curves of corroded reinforcement.This paper provides a comprehensive survey of research approaches focused on steel corrosion and the bonding performance of corroded steel reinforcement in concrete structures.It investigates the impact of corrosion on the weakening of bond strength in both longitudinal and stirrup reinforcement.Additionally,it summarizes recent research findings,including degradation models for bond strength based on the corrosion rate of steel reinforcement and the width of surface cor

关 键 词：钢筋锈蚀方法 粘结强度试验方法 粘结强度退化模型 粘结应力-滑移本构关系 

分 类 号：TU528[建筑科学—建筑技术科学]