Self-repairing technique based on microcapsules for cementitious composites: a review

Abstract EN

Self-repairing technology based on micro-capsules is an efficient solution for repairing cracked cementitious composites.

Self-repairing based on microcapsules begins with the occurrence of cracks and develops by releasing self-repairing factors in the cracks located in concrete.

Based on previous comprehensive studies, this paper provides an overview of various repairing factors and investigative methodologies.

There has recently been a lack of consensus on the most efficient criteria for assessing self-repairing based on microcapsules and the smart solutions for improving capsule survival ratios during mixing.

The most commonly utilized self-repairing efficiency assessment indicators are mechanical resistance and durability.

On the other hand, Nondestructive methods have been widely used to visualize and assess cementitious composites, self-repairing behavior.

However, certain issues remain, such as crack spread behavior, repairing agent kinetics on discrete crack surfaces, and the influence of inserted capsules on the mechanical characteristics of self-repaired cementitious composites, all of which require more investigations.