Proposta de intervenção pedagógica para estudo de misturas asfálticas recicladas com borra de óleo vegetal no curso de Engenharia Civil

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Abstract

The use of Reclaimed Asphalt Pavement (RAP) in the production of asphalt mixtures has been
encouraged due to the scarcity of virgin materials. However, the use of high percentages of RAP
(>30%) is conditioned to its susceptibility to failure under low temperatures and fatigue load. In
this sense, adding rejuvenating agents can partially or fully restore the aged properties of the
recovered asphalt binder. This study aimed to present a proposal for a pedagogical intervention
with recycled asphalt mixtures modified with the residual additive of vegetable oils for students of
the Civil Engineering course. The proposed rejuvenating agent was vegetable oil sludge derivedfrom refining. The asphalt binder modified by this material must be submitted to physical and
rheological tests and, based on this characterization, compose the recycled asphalt mixtures.
Mechanical tests of tensile strength, permanent deformation, susceptibility to moisture, and
stiffness will be performed as parameters of technical feasibility for the mixtures, as well as an
environmental analysis through the circularity index of the RAP. Carrying out this study in Civil
Engineering courses will open doors to scientific experience and analysis of materials used in
paving, allowing a range of opportunities in the performance of the future engineer, using
alternative sustainable materials.