Effect of freeze–thaw cycles on the resilient moduli and unconfined compressive strength of rubberized recycled concrete aggregate as pavement base/subbase

One of the most practical ways to reduce demand for natural aggregates in construction industry and dispose demolition (C&D) wastes landfills is using recycled concrete aggregate (RCA) pavement base subbase applications. Previous researches have mainly concentrated on engineering behavior C&D under ambient temperature. Little research has been directed toward possible impact temperature performance rubberized base/subbase In this study, first time, effects freeze–thaw process properties RCA containing crumb rubber applications were evaluated. The results show that resilient modulus RCA/rubber blends subjected cycles was higher than control samples (prepared tested at constant room 25 °C). unconfined compressive strength (UCS) F-T (subjected one-day freezing, followed by thawing) slightly lower samples. It found UCS value T-F thawing, freezing) remarkably Based preliminary experimental results, rubber, as a low carbon concept an economically viable option, can be used cycles.