“…Results demonstrated that the highest enhancement in compressive strength compared with the reference mix (without replacement) was achieved for a mix containing 50% RCA and 5% PSA. Sharipudin et al [30] explored the impact of using PSA and fine recycled concrete aggregate (FRCA) on the properties of lightweight foam concrete (LWC) with density ranges between 1400 and 1800 kg/m 3 . The replacement proportions of PSA were 5%e30%.…”