The Effects of Soft Reclaimed Asphalt Pavement on the Characteristics of Roller-Compacted Concrete

Abstract

Increased the amounts of soft reclaimed asphalt pavement (S-RAP) are due to the increased maintenance and rehabilitation actions. Also, a restricted quantity of research has been conducted on the impact of soft Reclaimed Asphalt Pavement (S-RAP) on the performance of Roller Compacted Concrete Pavement (RCCP). In addition, use of soft Reclaimed Asphalt Pavement in roller-compacted concrete pavements (RCCP) offers both benefits and drawbacks. The substantial advantages of employing S-RAP aggregates include addressing S-RAP disposal issues, mitigating greenhouse gas emissions, reducing reliance on natural aggregates, and lowering transportation expenses. Furthermore, employing soft reclaimed asphalt pavement (S-RAP) as a substitute for aggregate in Roller-Compacted Concrete (RCC) may reduce the amount of natural aggregate necessary in RCC. So, this study examined the effects of substituting 25%, 50%, 75%, and 100% of the coarse aggregate weight in roller-compacted concrete (RCC) with soft reclaimed asphalt pavement (S-RAP) on compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, and drying shrinkage. The substitution of 25%, 50%, 75%, and 100% soft Reclaimed Asphalt Pavement (RAP) by weight of natural coarse aggregate adversely affected the characteristics of Roller Compacted Concrete (RCC), leading to reductions in compressive, splitting tensile, and flexural strengths, along with the modulus of elasticity following a 28-day curing period.