Research progress of microcapsule technology in self-healing concrete
The aging of concrete materials in engineering applications is inevitable,and the generation of cracks is the main cause of the deterioration of concrete structure performance.Each year,countries around the world consume a large amount of funds for the main-tenance and repair of concrete cracks.The study of microcapsule self-healing concrete provides a new method for repairing concrete structures.It analyzes the research status of microcapsule self-healing concrete at home and abroad,summarizes the commonly used ma-terials and preparation processes for microcapsules,and analyzes their advantages and disadvantages.It reviews the evaluation of the self-healing effect of microcapsules on concrete,and from the perspective of practical engineering applications,analyzes the problems currently existing in the application of microcapsule self-healing concrete.Finally,the challenges and research directions faced by the production of the next generation of microcapsule self-healing concrete are proposed,providing a reference for future research on micro-capsule self-healing concrete.