The use of reclaimed asphalt pavement by adding retona asbuton on asphalt concrete wearing course using the warm mix asphalt method

Sustainable development is one of the major subjects that must be considered in the development process. One primary concept of sustainable development is recycling of materials that have been used to minimize the use of resources. The objective of this study is to utilize reclaimed asphalt pavement (RAP) as a mixture of new asphalt formations in the recycling process. Experiments on RAP material were used in the condition of warm asphalt mixture (WMA) with the addition of retona asbuton to the mix of Asphalt Concrete-Wearing Course (AC-WC) which would be tested with Marshall Test. Zeolite of 1% and 1.5% were added to each variation of asphalt content ranging from 5%; 6%; and 7%. The result of the recycled aggregate asphalt mixture was tested with Marshall Standard on the optimum Asbuton-R content. The mixing process was performed at warm temperatures to reduce fuel usage as well as carbon emissions produced. This research also utilized Retona asbuton which is a native product in the country. It also used zeolite which was not difficult to obtain in Indonesia. This would increase the potential of materials in the state. In this study, the analysis was carried out using a factorial design to obtain the optimum level of retona asbuton mixture with RAP used in the warm mixture. Evaluation would also be carried out on the effect of RAP on a mixture of AC-WC properties. The best mixture results were obtained, namely RAP content of 49.37% with 7% asphalt content where the addition of new asphalt was only 4.13% of the total mixture.