Studies on the Influence of the Type of Aggregates and the Type of Bitumen on the Performance of Airport Asphalt Mixtures

Among the component materials of a flexible or mixed road structure, the asphalt mixture is considered to be the most important material to be accurately characterized. Most of the literature references on aggregates in asphalt mixtures have paid attention to the grading curve, shape, strength and roughness, all of which are important for the performance of asphalt mixtures. The modification of bitumen with polymers gives certain qualities to the asphalt mixtures containing it, namely: high temperature elastic properties, thermal cracking resistance, fatigue resistance, and long-term durability. The aim of this paper is to present the influence of the aggregate type and bitumen type on the physico-mechanical characteristics of asphalt mixtures.The laboratory studies were carried out in the Road Laboratory on the asphalt mixture BAA 16 (AC16) used in the wearing course of airports. Tests were carried out, such as the Marshall set and flow index, water absorption, stiffness modulus, fatigue resistance, resistance to permanent deformation, fuel resistance.The quality of the materials used in an asphalt mixtures plays an important role in the subsequent in-service behavior of the asphalt mixture.