Asphalt Pavement Design using Results of Laboratory Fatigue Tests of Asphalt Mixtures

ABSTRACT Fatigue tests with use of 4 Point Bending test were performed on conventional and innovative asphalt mixtures: typical asphalt concrete, high stiffness modulus asphalt concrete and stone mastic asphalt with conventional and special binders, multigrade or elastomer-bitumen. The results of fatigue testing were applied for development of fatigue characteristics of particular asphalt mixtures. Pavement design analysis was performed with design of thickness of asphalt layers and prediction of their fatigue life. It was shown that use of fatigue law developed from laboratory test results for asphalt mixture enabled to prove the efficiency of use of innovative materials. It is possible to reduce total thickness of asphalt layers when applying in base course high stiffness modulus asphalt with special binders without decrease in fatigue life.