Evaluation of Self-Healing Efficiency of Microcapsule-Based Self-Healing Cementitious Composites Based on Acoustic Emission

Microcapsule self-healing technology is one of the effective methods to solve durability problem cement-based composites. The evaluation method efficiency microcapsule composites difficulties that limits technology. This paper attempts characterize by acoustic emission (AE) parameters, which provides a reference for Firstly, kind microcapsules were prepared, and added into prepare compression samples. Then, specimen with certain pre damage was obtained test. Secondly, damaged samples divided two groups. One group directly used tests obtain failure process. other put water healing 30 days, then carried out study influence on During experiments, AE signals collected characteristics extracted efficiency. results show test can trigger microcapsule, strength sample improved. mechanism be revealed parameters during compression, quantitatively characterized hits. research this provide experimental technical support mechanical property