Mechanical Properties of Rubberized Recycled Aggregate Concrete

Presented By: Kishoare Tamanna, The University of British Columbia Description: Recycling and utilizing waste tires and construction and demolition waste as alternatives to virgin aggregates in concrete can provide an environmentally friendly and effective solution for the exigent crises of both natural aggregate demand and environmental hazards. This study focuses on the material characterization of concrete with crumb rubber (CR) treated with NaOH solution and recycled concrete aggregate (RCA) under static compression and flexural loading. Three replacement levels of CR (0, 10, and 20% by volume) and RCA (0,50, and 100% by weight) replacing natural fine and coarse aggregates, respectively, were incorporated in this study. Rubberized recycled aggregate concrete (RRAC) demonstrated enhanced material behavior in terms of normalized strain capacity under compression and flexural load‐deflection compared to both conventional concrete and recycled aggregate concrete (RAC). Overall, RRAC yielded satisfactory compressive and flexural behavior for use in structural concrete.