Avaliação do resíduo de óleo vegetal como agente rejuvenescedor de ligantes a partir de análises reológicas e de morfologia de superfície
DOI:
https://doi.org/10.14295/transportes.v24i3.1147Keywords:
Asphalt Binders, Rejuvenation, Vegetable Oil, Rheology, Surface Morphology.Abstract
This study evaluates the use of a waste vegetable oil as a rejuvenator of asphalt binders. For that, characteristics of a binder in the stages unaged, aged, and rejuvenated are evaluated based on results of viscosity, dynamic shear modulus and phase angle. In addition, tests to characterize the surface morphology are conducted in an atomic force microscope to identify microscopic changes on the different components of the binder. A procedure to quantify these constituents is pre-sented and employed in the research work. It is expected that the results presented in this paper can promote sustainable engineering practices with the use of waste products that are able to rejuvenate aged asphalt binders, as well as stimulate the development of advanced techniques to characterize the material behavior in different scales and to identify links between them.Downloads
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