Evaluation of Durability Properties of Cement Stabilized Base Mixtures Contains Different Amounts of RAP during Wet and Dry Cycles

One of the issues that has been considered in the construction and improvement of pavements in recent decades is the use of recycled materials in the pavements. In this regards using RAPs is widely interested by many agencies and policy makers to recycle the waste materials and reuse of this valuable aggregated coating by bitumen. According to previous studies, the generally accepted criteria for the design of pavement structures containing a stabilized foundation are based on the allowable values and limits of unconfined compressive strength (UCS), and generally control according to durability criteria. The point to be noted here is the limited number of studies that examine the issue of durability and its impact on the mixing design and determining the optimal amount of RAPs. The purpose of this study is to investigate different durability criteria for cement-stabilized mixtures containing RAPs and to determine the optimal values of RAP and cement in terms of durability of such mixtures.