ABSTRACT
This study investigates the performance of four asphalt mixture types that were recently used on paving projects across the state of Missouri, USA. Three-of-four mixtures contained reclaimed asphalt pavement (RAP) with up to 35% asphalt binder replacement (ABR), while the fourth mixture possessed 33% ABR, entirely via recycled asphalt shingles (RAS). Performance testing including the disk-shaped compact tension (DC(T)) test, along with indirect tension (IDT) creep and strength testing were performed on field cores and plant-produced, lab-compacted (PPLC) samples to evaluate the cracking potential of each of the studied mixtures. Testing results suggested that each of the mixtures have high cracking potential, i.e., exhibit brittle behavior. ILLI-TC software was employed using creep and DC(T) inputs to simulate low temperature cracking potential in the Midwest climate.
