Waste Food Wax Additive as a Bitumen Modifier for Warm Mix Asphalt Production

This work deals with the investigation of a waste food wax as a potentially eco-friendly modifier for bitumen binders in order to decrease the viscosity at temperatures below 120 °C. To date it is well known that ― compared to classical processes ― waxes lower operating temperatures of asphalt paving, thereby reducing atmospheric emissions and costs.

Hereafter we will present compare and discuss the effect of this waste wax as well as other waxy and surfactant additives on the macroscopic rheological properties by determining temperatures of viscoelastic transition and viscosities of various bitumen additives blend. Moreover we present a molecular study of the effect of the various additives by studying the molecular diffusion through the Nuclear Magnetic Resonance (NMR) diffusiometry, Differential Scanning Calorimetry (DSC) measures has been also performed on the various waxes (waste and commercial) to evaluate and compare the solid-liquid phase transition temperatures of the studied additives.

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