自修复混凝土修复性能评估中的若干关键技术与方法研究综述  

A Review of Some Key Technologies and Methods Used for Evaluating the Healing Performance of Self-healing Concrete

作　　者：张立卿 边明强 王云洋 许开成[1,2] 陈梦成[1,2] 韩宝国[4] ZHANG Liqing;BIAN Mingqiang;WANG Yunyang;XU Kaicheng;CHEN Mengcheng;HAN Baoguo(State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;School of Civil and Architecture Engineering,Hunan University of Arts and Science,Changde 415000,Hunan,China;School of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,南昌330013 [2]华东交通大学土木建筑学院,南昌330013 [3]湖南文理学院土木建筑工程学院,湖南常德415000 [4]大连理工大学建设工程学院,辽宁大连116024

出　　处：《材料导报》2024年第9期78-100,共23页Materials Reports

基　　金：中国博士后科学基金(2022M713497);江西省科技厅面上项目(20224BAB204067);江西省教育厅一般项目(GJJ210656);江西省交通运输厅科技项目(2022H0017)。

摘　　要：混凝土的自修复可有效抑制混凝土开裂并降低其开裂对材料力学和耐久性能的不利影响,从而提高混凝土结构的安全性和韧性、延长混凝土结构的使用寿命、降低混凝土结构的维护成本,是推动混凝土材料与结构可持续发展的一种极具前景的技术方法。然而,目前关于混凝土自修复性能评估过程中的裂缝制备和自修复环境选择、效果评价指标、修复机制表征方法等关键技术手段尚未形成统一认识与标准。基于此,本文分析了采用加载和非加载方式制备自修复混凝土裂缝的特点和自修复环境的选择原则,比较了基于裂缝特征、力学性能、耐久性能和微观结构的自修复效果评价方法,总结了自修复混凝土修复机理的研究方法,最后,提出了自修复混凝土研究中存在的问题和潜在的改进措施,并展望了自修复混凝土的发展趋势和应用前景。The self-healing capacity of concrete can effectively inhibit concrete cracking and reduce the adverse effects of cracking on its mechanical properties and durability.It improves the safety and toughness of concrete structures,extends their service life,and reduces maintenance costs,thus,depicting great potential to promote the sustainable development of concrete materials and structures.However,there is still a lack of understanding with regard to the vital aspects used to characterize the self-healing capacity of concrete,for e.g.,crack preparation,self-healing curing,the effect of evaluation parameters,and self-healing mechanism characterization methods.Therefore,this review analyzes the characteristics of crack preparation methods for self-healing concrete through loading and non-loading techniques and principles of self-healing curing selection.The comparison of the self-healing effect evaluation methods based on crack characteristics,mechanical properties,durability,and microstructures is conducted.Finally,the review summarizes the investigating methods for the mechanisms of self-healing concrete and presents the shortcomings and solutions of self-healing concrete as well as its future developments and application prospects.

关 键 词：自修复混凝土 裂缝制备 修复环境 效果评定 机理研究方法 

分 类 号：TU528[建筑科学—建筑技术科学]