Abstract
In this study, polyolefin-aramid fibers were used as an additive to modify the performance properties of asphalt mixtures. For this purpose, three percentages of the fiber (i.e., 0.025%, 0.05%, and 0.075%) were added to asphalt mixtures and the rutting, fatigue and cracking performance of the mixtures were evaluated using the dynamic creep, wheel track, indirect tensile fatigue, and semi-circular bending (SCB) fracture tests. The results showed that the rutting and cracking resistance improved incrementally by increasing the fiber content, and the fatigue performance enhanced by adding up to 0.05% fiber and then leveled out by increasing the amount of fiber.
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