On the mechanism of Cl− diffusion transport in self-healing concrete based on recycled coarse aggregates as microbial carriers

Microbial self-healing concrete (SHC) is a biomimetic smart material with microbial carriers to repair microcracks. This paper investigates the mechanism of Cl− transport and the repair performance of SHC based on recycled coarse aggregate (RCA) as microbial carriers. To assess the repair effectiveness to hinder Cl− corrosion, it is necessary to understand the ionic interactions and mechanism that occur among Cl−, the repair effectiveness and...