Abstract

MARTINEZ-ECHEVARRIA-ROMERO, Mª José et al. Valorization of vinasse as binder modifier in asphalt mixtures. Dyna rev.fac.nac.minas [online]. 2015, vol.82, n.194, pp.52-56. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v82n194.44432.

The reutilization of waste generated by industrial processes has become a majorenvironmental objective in scientific and technical research. In the construction sector, there is a broad range of techniques for the exploitation of different types of waste, which can then be used as a replacement for raw materials. This paper presents the results of a study of vinasse, a by-product of biomass ethanol, andanalyzes its viability as a bitumen modifier in asphalt mixes. For this purpose, four AC-16S asphalt mixes were evaluated for moisture sensitivity, plastic deformation, stiffness, and fatigue. The mix formulas were the following: (Mix 1) 50/70 bitumen; (Mix 2) 50/70 bitumen modified with 10% vinasse; (Mix 3) rubber bitumen; (Mix 4) rubber bitumen modified with 10% vinasse. The results of this study showed that bitumen modified with vinasse improved the mechanical performance of the AC-16S mix and also contributed to the valorization of vinasse waste.

Keywords : Asphalt mixture; binder modifier; mechanical behavior; vinasse.

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