State-of-the-Art Review of Microcapsule Self-Repairing Concrete: Principles, Applications, Test Methods, Prospects

被引:3
|
作者
Jiang, Lu [1 ,2 ]
Wu, Mingli [3 ]
Du, Fei [4 ,5 ]
Chen, Dongdong [6 ]
Xiao, Lihua [7 ,8 ]
Chen, Wei [1 ]
Du, Wei [1 ,2 ,6 ]
Ding, Qingjun [6 ]
机构
[1] Wuhan Text Univ, Hubei Prov Engn Res Ctr Ind Detonator Intelligent, Wuhan 430073, Peoples R China
[2] Wuhan Text Univ, Sch Mat Sci & Engn, Wuhan 430200, Peoples R China
[3] Huazhong Univ Sci & Technol, Coll Life Sci & Technol, Wuhan 430074, Peoples R China
[4] Cent & Southern China Municipal Engn Design & Res, Wuhan 430010, Peoples R China
[5] Huazhong Univ Sci & Technol, Sch Civil & Hydraul Engn, Wuhan 430074, Peoples R China
[6] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
[7] Guizhou Commun Polytech Univ, Dept Automot Engn, Guiyang 551400, Peoples R China
[8] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
cement-based materials; self-repairing; crack; microcapsule; nanomaterials; durability; HEALING FEATURES; FEASIBILITY; PERFORMANCE; COMPOSITE; CRACKS;
D O I
10.3390/polym16223165
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Cement-based materials are widely used in construction worldwide, but they are vulnerable to environmental stressors and thermal fluctuations, leading to the formation of internal cracks that compromise structural integrity and durability. Traditional repair methods such as surface coatings, grouting, and groove filling are often costly and labor-intensive. In response, self-repairing technologies for cement-based materials have emerged as an innovative and promising solution, offering the potential to significantly extend the lifespan of structures and reduce maintenance costs. A particularly novel approach is the development of microcapsule-based self-repairing concrete. In this system, repair agents are encapsulated within microcapsules and combined with curing agents in the concrete matrix. When cracks form, the microcapsules rupture, releasing the repair agents to autonomously heal the damage. This self-repairing mechanism is characterized by its high efficiency, durability, environmental sustainability, and versatility, making it a promising alternative to traditional repair methods. Recent research has focused on the development of microcapsules with various core materials, such as TDI (toluene diisocyanate), IPDI (isophorone diisocyanate), or epoxy resin, as well as composite shell materials including paraffin wax, PE (polyethylene) wax, nano-SiO2, and nano-CaCO3. A novel advancement in this area involves the enhancement of microcapsules through the incorporation of magnetic nanomaterials into the shell, providing new possibilities for self-repairing systems that address cracks in cement-based materials.
引用
收藏
页数:39
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