Pavement design with central plant hot-mix recycled asphalt mixes

Central plant hot mix recycling is one of the popular techniques adopted for recycling of asphalt pavement materials. Literature review reports varied levels of performances (laboratory as well as field) of recycled mix compared to the performances of corresponding virgin mixes. Thus, there is a need for conducting performance-related tests before finalizing any recycled mix design. The present paper discusses laboratory study conducted on recycled mix design of two different Reclaimed Asphalt Pavement (RAP) samples, and subsequently develops an integrated mix-design-structural-design approach for hot recycled mix. The total cost of the asphalt layer construction is estimated considering the constituent proportion and the pavement design thickness so that the designer can choose the best option.