الفهرس 
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Abstract
Asphalt binders play a crucial role in the performance and durability of asphalt pavements. Over time, asphalt binders undergo aging, which leads to changes in their rheological and chemical properties. This research aims to investigate the impact of laboratory short- and long-term aging on the properties of three conventional and eight modified asphalt binders. The study specifically focuses on modified asphalt binders incorporating different technologies namely, polymers, rubber, nano, and anti-aging modifiers (antioxidants). The combination of the three conventional and the eight modified asphalt binders investigated in this research generated a set of eleven original (unaged) asphalt binders, which were short-term aged in the rolling thin film oven (RTFO), and then long-term aged in the pressure aging vessel (PAV) in addition to a recovered asphalt binder (RAB) from an in-service pavement section. The aging was evaluated using a set of physical and rheological tests, chemical analysis using Fourier Infrared spectroscopy (FTIR), and microstructural analysis using atomic force microscope (AFM). Aging indices (AIs) were calculated for each asphalt binder based on the physical, rheological, and chemical properties. Measured laboratory data for the three sets of asphalt binders (33 asphalt binders) was used to study the interrelationships between the selected AIs using regression analysis. A ranking system was proposed using rheological testing results and FTIR chemical stretching groups. Binders that underwent modifications using carbon nanotubes, styrene butadiene styrene (SBS), and activated rubber were ranked the best out of the investigated binders in terms of aging resistance. Finally, this research delved into non-standardized aging procedures and drew comparisons with standardized techniques, in addition to assessing their relevance in contrast to natural field aging. The non-standardized aging was conducted by heating Rotational Viscosity (RV) samples for 24 hours at high temperature, changing time and film thickness in the PAV and by testing conventional binder preserved from external environmental conditions over the course of 24 months. The findings indicated that the SBS polymer-modified asphalt binder was one of the best asphalt binders to resist physical changes but ranked moderately when subjected to chemical testing. On the other hand, the asphalt binder modified with carbon nanotubes (CNT) exhibited significant resistance to both physical and chemical changes of aging processes. Although antioxidants modified binders generally perform better than conventional asphalt binders in terms of aging resistance, furfural antioxidant modified asphalt showed the highest changes based on the results of rheological tests, while it was superior to resist PAV aging by means of chemical analysis. According to the linear relationships for long-term aging indices, complex shear modulus at high and intermediate temperatures was the most correlated parameter with other physical and rheological parameters. Nonetheless, rotational viscosity and non-recoverable creep compliance (Jnr) correlated the most with other parameters for short-term aging indices. The AI of carbonyl chemical group yielded from the FTIR data displayed weak correlations with most of the rheological indices at all aging levels. The Carbonyl Index (IC=O) was found to have fair to good correlations with Jnr and linear amplitude sweep test parameters after PAV aging.