LOW-COST PAVEMENT BY USING SOLID WASTE, RECYCLED AGGREGATES, CRUMB RUBBER, AND WASTE PLASTIC FOR RURAL ROAD

Abstract

In this paper, a practical idea is presented for the possibility of producing low-cost pavement for paving rural streets with light traffic loads by using asphalt mixtures of recycled aggregates (RA), fine used rubber (FR), and waste plastic (WP). The mechanical properties of the asphalt mixtures with the RA were determined. In addition to the determination of these characteristics when adding the WP to the hot RA before mixing them with asphalt at a temperature of 180 °C according to the dry method. Also, the results of tested mixtures were compared with asphalt mixtures that use FR as an alternative to fine aggregate, where the substituted ratio of WP were 0, 2, 4, 6, and 8%: FR were 0, 0, 1.5, 3, 4.5, and 6% of the percentage of fine RA. The outcome of the total tests that have been carried out on modified asphalt mixtures with both FR and WP, it can be advised that adding them leads to a clear increase in Marshall’s stability. The percentage of FR that can be added to asphalt mixes is 3% and the WP is 4% of the total weight of fine aggregates. As a result, asphalt mixtures can be produced using RA, FR, and WP that can work within permissible conditions in rural areas, thus making a product of low-cost compared to others.