Exploring the current state of application of self-healing concrete

Abstract

As the durability requirements of the construction industry increase, the vulnerability of traditional concrete structures to environmental erosion and the difficulty of repairing cracks due to external forces are becoming more and more obvious. To prolong the life of concrete structures, reduce maintenance costs and improve safety, the investigation of the performance of new material self-repairing concrete has arisen. This paper adopts the classification method of intrinsic self-repair and extrinsic self-repair to compare and analyze the five common types of self-repairing concrete at this stage. The analysis shows that different types of self-repairing concrete have their different advantages and applicable conditions, but there are also certain limitations. For example, osmotic crystallization self-repairing concrete is suitable for concrete structures in wet or moisture-containing environments. Microbial self-repairing concrete is more suitable for environments with suitable temperature and humidity to ensure the activity of repairing microorganisms and repairing effect. This paper can provide a theoretical basis for the future application of self-repairing concrete and promote the sustainable development of the construction industry.