Influence of the low-emission asphalt LEA® composition on total organic compounds emissions using the factorial experimental design approach

Abstract

In the sustainable development context, road companies have adopted an approach which aims at accelerating convergence between environmental requirements and development of energy-saving materials called warm and half-warm asphalt mixes. This study, realised in the Laboratoire Central des Ponts et Chaussées (LCPC) within the framework of a partnership between EIFFAGE Travaux Publics and LCPC aimed at determining the influence of the mix composition on the environmental properties of the half-warm mix asphalts LEA® (acronym of low-emission and low-energy asphalt) produced at 95°C compared to the corresponding hot mix asphalt acting as a reference. By means of the factorial experiment design approach, this study highlights the influence of the bitumen chemical nature, the additive origin and the water content on fumes generated during the manufacturing stage