Effect of Aging on the Performance of Asphalt Concrete

Abstract

One of the main issues that asphalt encounters over its service life is aging, which causes the material to change from a flexible to a solid condition and increases its susceptibility to breaking and fissures. Asphalt ages due to the oxidation of the asphalt and the evaporation of volatile components. This paper's primary objective is to investigate the impact of aging on the site-modified asphalt mixture. Asphalt pavements usually age due to the binder's lighter and the asphalt's oxidizing evaporating. After being prepared, asphalt concrete mixtures were aged over an extended period. For Marshall compacted specimens, the process entails long-term aging periods for the asphalt within a year of its service. At its ideal asphalt concentration, the effects of varying aging durations on the Marshall Properties, The combination becomes stiffer as it ages longer, which raises Marshall Stability and the robust modulus, which raises the mixtures' resistance to irreversible deformation. Compared to the control mixture, the one-year long-term aging increases the Marshall stability and resilient modulus by 35.33% and 28.59%, respectively.