A Review of Nanomaterial Mixtures on Asphalt Pavement Application

Abstract

This paper reviews the functionalization of nanomaterial especially nanoclay and nanosilica as commonly used material, process, and effect from both material to mechanical properties of the asphalt pavement. On the other sight, discussion about laboratories scale development on road site of engineer application and cost of nanomaterial functionalization are discussed then. In recent years, nanomaterial developed broadly in various applications. One of that application is asphalt pavement mixtures. Its nanoscale allow modification with its promise properties like specific surface area and spatial confinement. These promising properties lead to improve mechanical properties of nanomaterial asphalt mixture, the compressive strengths and heat resistance of the composite, the tear, and also shows good dispersion. Nanosilica and nanoclay are the common nanomaterial applied in asphalt pavement mixtures. Some studies reported that both materials could decrease asphalt road damage and failure due to poor drainage, or layer composition weakness. Nanomaterial play as filler or may be as the binder to improve the drainage or layer composition weakness. However, upcoming challenge appears as contrast different between nanoscale of nanomaterial and large scale of asphalt mixture in ton. This case lead to the high cost of nanomaterial in high purity and particle size. Furthermore, nanomaterial require to high skilled technician in preparation and modification. Therefore, engineer should modify the desired nanomaterial in those requirements which then low-cost mixture asphalt pavement modification can be achieved.