Effect of Wet-dry Condition on Self-healing Property of Early-age Ecc

This paper describes the results of self-healing behavior in early-age Engineered Cementitious Composites (ECC). Uniaxially pre-loaded ECC with tensile strain of 0.3 or 0.5% were subjected to different number of wet-dry cycles. Then, resonant frequency test and reloading test were carried out to assess the recovery rate as a function of the number of wet-dry cycles. These two tests indicated different recovery rates and it was revealed that the number of wet-dry cycles, crack width and dispersion were crucial to attain recovery in mechanical characteristics.