Fatigue behavior of SMA and HMA mixtures |
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| Affiliation: | 1. Department of Civil Engineering, University of Nebraska-Lincoln, Lincoln, United States;2. Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran;1. Dept of Civil Engineering, Suzhou University of Science and Technology, 1701 Binhe Road, Suzhou 215011, China;2. Department of Civil Engineering and Construction Management, Georgia Southern University, 1332 Southern Drive, Statesboro, 30458 GA, USA;1. School of Civil Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran;2. School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran;1. Civil Engineering Department, Faculty of Engineering, Yazd University, Safaeiah, 89195-741 Yazd, Iran;2. Welding and Joining Research Center, School of Industrial Engineering, Iran University of Science and Technology (IUST), Narmak, 16846-13114 Tehran, Iran;3. General Directorate of Roads and Urban Development of Yazd Province, Yazd, Iran |
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| Abstract: | Fatigue crack is a main form of structural damage in flexible pavements. Under the action of repeated vehicular loading, deterioration of the asphalt concrete materials in pavements caused by the accumulation and growth of the micro and macro cracks gradually takes place. The indirect tensile tests was carried out on hot mix asphalt HMA and stone matrix asphalt SMA mixtures comprising different nominal maximum aggregate sizes NMAS in three temperatures of 5, 25 and 40 °C. Stiffness modulus, fatigue lives and fatigue prediction equation of the mixtures were developed and characterized in terms of aggregate gradation type, coarseness and fineness of gradation, temperature and asphalt content. |
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