A study of properties of asphalt concrete containing old concrete

Abstract

The reseach was made for the purpose to study in the qualification of new asphalt concrete by using old concrete to be in the part of one component. We research on the issue whether it is suitable and get along with road surface or not. We had compared with asphalt concrete at rank 48:20:22:10 with weight and quantity of asphalt at 4.0%, 4.5%, 5.0%, 5.5% and 6.0%. This test is done under Marshall method basis of Department of Highway. We use the same source of limestone to test and compare. As the research, the result of density, percentage of air space, flow, stability, percentage of space replaced with asphalt concrete and percentage of total mass gap are in acceptable level when comparing the old asphalt concrete under Department of Highway standard. As result, we can use an concrete to be the component in making asphalt concrete in road surface. However, additional research on its deep detail will decrease pollution and resource.