Viscoelasticity of Recycled Asphalt Mixtures with High Content Reclaimed SBS Modified Asphalt Pavement

For the concerns of investigating viscoelastic properties recycled asphalt mixtures incorporating high content reclaimed styrene-butadiene-styrene (SBS) modified pavement (RAP-SBS), mixture performance tester (AMPT) was applied to analyze dynamic modulus and phase angle by influence RAP-SBS content, temperature, loading frequency, long-term aging (LOTA), incorporation a rejuvenating agent. Master curves regarding are developed, within wide frequency range characterized with Christensen–Anderson–Marastean (CAM) model. Eventually, one-way analysis variance (ANOVA) investigate role factors on viscoelasticity mixtures. The research indicates that (1) elastic component elevates increasing frequency; as result, high-temperature stability it enhances, while is prone cracking at low temperatures; (2) should be selected according specific characteristics pavement. most cases, 50% recommended; (3) high-content mixed agent has outstanding resistance performance; (4) observed have significant