A review of steel fiber’s potential use in Hot Mix Asphalt

Abstract

Abstract The purpose of this paper is to overview the potential use of steel fibre in hot mix asphalt, explore the evolution of steel fibre reinforced asphalt concrete (SFRAC), highlights current trends in research and industry and recommend future areas of research. The study focus on the steel fibre industry and steel fibre generated from waste tyres applied in asphalt pavement. This review focuses on the use and performance of these fibres in altering the performance of asphalt pavements in terms of fibre concentration and fibre length, as well as the influence of steel fibre integration in asphalt pavements. According to the literature, the presence of steel fibre in asphalt pavements contributes significantly to the improvement of the properties studied, most noticeably durability. However, there are still few studies that provide conclusions about the relationship between fibre length and steel mixture concentration fibre in influencing the ability, strength, and durability properties of this asphalt concrete pavement. This review elevates awareness of the need of exploring the relationship between fibre length and morphological features in determining the bridging mechanism in asphalt concrete pavement composition.