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Abstract:Asphalt pavements suffer physical and mechanical deterioration over time as asphalt binders age. The rate at which a binder ages depends on its composition and interactions with other mix design components, such as aggregate gradation, surface area and voids content. The ability to accurately estimate binder aging and the rate at which it causes pavement deterioration is critical to developing cost-effective construction and maintenance strategies. The objectives of this research were to develop oven-aging protocols for simulating short-term and long-term aging in a laboratory and to determine the effects of binder formulation on the cracking performance of mixtures.
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