| his study evaluated the feasibility of using concrete containing recycled asphalt pavement (RAP) in concrete pavement application. Four different RAP's were selected from different locations in Florida. Concrete mixtures containing 0%, 20%, 40%, 70%, and 100% RAP were produced in the laboratory. The mechanical properties, thermal properties, and aggregate gradation of concrete mixtures containing RAP were evaluated in this study. Results of the laboratory testing program indicate that compressive strength, modulus of elasticity, flexural strength and splitting tensile strength decreases as the percentage of RAP increases. The reduction in flexural strength is lower than the corresponding reduction in compressive strength and splitting tensile strength. The coefficient of thermal expansion and drying shrinkage increases as the percentage of RAP increases. The results of the stress-strain property of concrete containing RAP indicate that the failure strain increases as the percentage of RAP increases. For the concrete mixtures with RAP, the combined aggregate gradation improved when the RAP was combined with... |
