Peridynamics modeling and simulation of meso-scale fracture in recycled coarse aggregate (RCA) concretes

In this paper, we present two non-local mechanics models of recycled coarse aggregate (RCA) concrete based on peridynamics modeling and simulation, i.e. RCA model 1 and RCA model 2. The recycled coarse aggregate concrete is a heterogeneous composite that has five different phases including natural coarse aggregate, old interfacial transition zone (ITZ), old cement mortar, new ITZ, and new cement mortar. The sizes of the grains of the multi-level...