ABSTRACT

ABSTRACT: Virgin crushed stone aggregate is often added to improve the gradation and increase the strength of the reclaimed asphalt pavement (RAP) materials treated with cement. The compaction, unconfined compressive strength (UCS), indirect tensile strength (ITS) and resilient modulus tests were conducted on 0%, 15% and 30% virgin aggregate content blended with RAP. Samples were treated using 3%, 5% and 7% 325# Portland cement respectively, and were cured for 7, 28 and 90 days. The results show that, with the increasing amount of cement content and virgin aggregate content, the optimum moisture content and maximum dry density of RAP/virgin aggregate blends will increase slightly. The increases of cement content, curing period and aggregate content will all lead to the increasing test values of UCS, ITS and resilient modulus. The proper cement content and virgin aggregate content were suggested around 5% and 15%, respectively, in this study.