The use of reclaimed asphalt pavement by mixed with crushed rock and cement in road construction

Abstract

This paper presents the appropriate properties and ratios of reclaimed asphalt pavement (RAP) to cement that affects the unconfined compressive strength (UCS) to replace crushed rock. Determining the proportion of test samples RAP per crushed rock in mixed proportions 10%, 20%, 30%, 40%, 50%, 60% and 70% of the total weight, by testing to determine the unconfined compressive strength (USC). The results showed that unconfined compressive strength (UCS) decreased with the addition of reclaimed asphalt pavement (RAP) and the ratio of RAP at 10% of total weight has the maximum UCS. When compared with the two crushed rock samples with different engineering properties, it was found that the UCS depended on the properties of crushed rock. Studies have shown that it is possible to use RAP as an alternative material for road construction or improvement. Which is useful in terms of engineering which passed according to the requirements of the Department of Highways on the pavement layer mixed with cement that the value of compressive strength shall not be less than 24.50 ksc at a curing period of 7 days.