Advances in the development of alternative binders from biomass for the production of biosourced road binders. In Huang, Di Benedetto (Eds) Advances in Asphalt Materials, Road and Pavement Construction
CHAILLEUX ; AUDO ; GOYER ; QUEFFELEC ; YAZOGHLI MARZOUK
Type de document
CHAPITRE D'OUVRAGE (CO)
Langue
anglais
Auteur
CHAILLEUX ; AUDO ; GOYER ; QUEFFELEC ; YAZOGHLI MARZOUK
Résumé / Abstract
This chapter will focus on recent advances for the production of biosourced road binders as an alternative to bitumen. Indeed, in recent years, tensions have appeared on the asphalt supply for road construction. Thus, valorization of different types of biomass for the production of alternative binders might be attractive. The more developed alternative binder is based on the high molecular weight material, generally from the wood industry, mixed with mineral or vegetable viscous oil. The resulting binder has characteristics similar to bitumen and has been used on several experimental road work sites. In some cases, aging issues of the binder occurred, with a brittle behavior at service temperature. Other promising biomasses have been studied, such as microalgae and swine manure, using hydrothermal liquefaction. The resulting binders appear to have the same rheological properties as asphalts. Vegetable resources are also used to produce fluxes, whose main advantage is the reduction of emissions of dangerous organic volatile compounds. Finally, research on new biomasses shows a credible alternative for future full or partial replacement of bitumen.
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