Investigation on Fracture Performance of Hot-Mix Asphalt with Reclaimed Asphalt Pavement under Fatigue Loading

Reclaimed asphalt pavement (RAP) has been widely used in pavement. However, the fatigue performance of hot-mix (HMA) with RAP is a critical factor to ensure durability. In this study, tests using an Overlay Tester (OT) were conducted novel load-controlled mode. contents 0, 25% and 50%, respectively. cyclic loading, life energy parameters measured. Results indicated that decreased both fracture tensile strength. Fatigue was determined two methods. proved be beneficial prolonging methods at 25 °C. opposite conclusions made about effect on −10 At °C, compared HMA without RAP, cumulative dissipated energies by 49.1% 77.3% when inclusion increased 31.1%, while 50% 41.2%. The developments consistent results first method.