Characterization of asphalt binder containing hydrothermal liquefied composition extracted from food waste

Abstract

The use of biological wastes to extract an alternative substance to the asphalt binder could potentially reduce the depletion of crude oil. This also could address the environmental pollution resulting from these wastes and develop the asphalt pavement economically and environmentally. Liquefied product extracted from food waste by hydrothermal liquefaction process can be used as an alternative bio-binder in asphalt pavement. This study evaluates the performance of the base asphalt binder of 60/70 pen after adding the hydrothermal liquefaction product of food waste. This involves a set of laboratory trials in liquefying the food waste via hydrothermal process under various selected variables. The physical properties of the base and modified asphalt binder were then evaluated using the penetration, softening point and viscosity test. The results conclude that liquefied food waste (LFW) product has a potential to be used as bio-binder in asphalt pavement.