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This paper reports the findings of an experimental study of the shear behavior of reinforced concrete beams produced using recycled coarse aggregates (RCA). A total of eighteen test results from three series of beams containing transverse and longitudinal reinforcement are presented. The variables in the tested beams were the percentage of replacement (PR) of natural coarse aggregates (NCA) with RCA in the concrete mixes, and the amount of stirrups provided.

The percentage of replacement in the three series was 0%, 20% and 100%. The ratio of the longitudinal reinforcement in all the beams was 1.38%. The experimental results showed that incorporating RCA at the rates of PR = 20% and PR = 100% in the concrete caused 5% and 9% average reductions in the shear strength relative to the natural aggregate concrete (NAC) beams respectively. The results also showed negligible effects of PR on the …