Conclusions

Self-healing behavior of mortar under different levels of pre-damage was investigated in this study.Based on the results in mechanical property,some conclusions were drawn.

(1)A proper replacement ratio of FA was beneficial to activate the self-healing performance.Even under repeated 80%fmax,remarkable self-healing behavior was observed in the specimen with FA replacement ratio of 35%.

(2)For most specimens,the selfhealing performance would be weakened by the increase of preloading level and times.