LABORATORY STUDIES OF DENSE BITUMINOUS MIXES-II WITH RECLAIMED ASPHALT MATERIALS

C.Udayshankar, M.Varuna

Abstract: The issue of growing demand on our nation’s roadways over that past couple of decades, decreasing budgetary funds, and the need to provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing pavements and the issue of building sustainable road infrastructure in India. With these emergency of the mentioned needs and this are today’s burning issue and has become the purpose of the study. In the present study, the samples of existing bituminous layer materials were collected from NH-48(Devahalli to Hassan) site.The mixtures were designed by Marshall Method as per Asphalt institute (MS-II) at 20% and 30% Reclaimed Asphalt Pavement (RAP). RAP material was blended with virgin aggregate such that all specimens tested for the, Dense Bituminous Macadam-II (DBM-II) gradation as per Ministry of Roads, Transport, and Highways (MoRT&H) and cost analysis were carried out to know the economics. Laboratory results and analysis showed the use of recycled materials showed significant variability in Marshall Stability, and the variability increased with the increase in RAP content. The saving can be realized from utilization of recycled materials as per the methodology, the reduction in the total cost is 19%, 30%, comparing with the virgin mixes

Keywords: Reclaimed Asphalt Pavement, Marshall Stability, MS-II, Dense Bituminous Macadam-II

DOI: https://doi.org/10.15623/ijret.2013.0213042