Unlocking the role of pores in chloride permeability of recycled concrete: A multiscale and a statistical investigation

Chloride ingress is strongly associated with the properties of pores in recycled concrete. To unlock its role chloride permeability, pore structures concrete containing various quantities coarse (fine) aggregates were analyzed from multi-scales, and outcomes further verified by statistical investigation. The results show that different roles played terms concrete, as reflected their volume diameter mesopores micropores, respectively. Meanwhile, Unlike previous studies, two key parameters (i.e., P V < 1 T ) put forward, revealing strong interconnections diffusion confirmed analysis. Further, a model concerning permeability was proposed on basis probability theory, newly factor Rp (relied parameters) has great relevance to effective diffusion. Therefore, this work enhances accuracy prediction for diffusivity durability • Role multiscale D Cl − (RC) unlocked. Substitution levels RCAs/RFAs irrelevant RC. Mesopores micropores specific or are crucial Proposed parameter models reveal high