An experimental investigation on applying the recycled aggregates obtained from oil contaminated concrete exposed to seawater as road unbound pavement materials

By the population growth and the increasing need in new roads construction and also the maintenance services of the existing roads and with the attention to the reduction of natural materials, using the recycled aggregates (RA) from construction and demolition waste (CDW) is spreading around the world. One of the most important resources of RA is oil contaminated concrete of oil platforms and wharfs which are exposed to sea water. In this paper, first of all, the cubic samples of oil contaminated concrete with different percentages of contamination were built. The curing of the samples was done in the sea water (Indian Ocean-Chabahar coast/Iran). Then the samples were broken and crushed under experimental conditions. In the rest, the recycled oil contaminated aggregates were sieved and the possibility of the use of them as the granular aggregates of sub-base and base layers according to AASHTO and ASTM was investigated. The experimental results show that there is no considerable differences with the code recommendations.