Materials Reports 2020, Vol. 34 Issue (Z2): 201-205 |
INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Research Status and Progress of Concrete Self-healing Microcapsule Wall Material |
ZHAO Shangchuan, LI Xiaopeng, WANG Shaopeng
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Bridge & Tunnel Research Centre, Research Institute of Highway Ministry of Transport, Beijing 100089,China |
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Abstract With the development of self-healing microcapsules for concrete, the research on capsule wall materials has achieved remarkable results. The capsule wall material has a great influence on the survival time and triggering efficiency of microcapsules in concrete. Different types of capsule wall materials correspond to different self-healing triggering methods. In this paper, the capsule wall materials are divided into two types: physical trigger type and chemical trigger type according to the trigger mode.This paper reviews the research both the status and progress of concrete self-healing microcapsule wall materials. The wall materials with different triggering principles are listed, and their advantages and disadvantages are analyzed from multiple angles; the mechanism of pH and ion triggering is emphasized, and the advantages and application prospects of chemical triggering are analyzed. Finally, the development direction of self-healing microcapsule wall material for concrete is summarized and prospected.
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Published: 08 January 2021
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Fund:This work was financially supported by the Special Fund Project of Science and Technology Innovation, Research Institute of Highway Ministry of Transport(2017-A30007) and National Key R&D Program of China(2020YFC1511902). |
About author:: Shangchuan Zhao, a researcher at the Highway Research Institute of the Ministry of Transport and a master's degree tutor, received his Ph.D. degree in structural engineering from Dalian University of Technology in July 2002. He mainly engaged in the research and development and engineering application of engineering structure durability and safety reliability theory and methods, high-performance concrete materials, structural aging detection evaluation and maintenance and reinforcement technology. He has edited 3 industry standards and won the second prize of provincial and ministerial level scientific and technological progress, 11 rewards in total. In addition, he has have 1 book and more than 60 papers published. |
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