Influência da velocidade de carregamento e temperatura no comportamento mecânico de misturas recicladas a frio com emulsão asfáltica e espuma de asfalto
DOI:
https://doi.org/10.14295/transportes.v27i3.2026Keywords:
Misturas recicladas a frio, Emulsão asfáltica, Espuma de asfalto, Viscoelasticidade, 3D-Move Analysis.Abstract
Cold recycling is a sustainable alternative to reduce virgin aggregate consumption and the inadequate disposal of residues produced in restauration undertakings. However, there is no agreement under the mechanical properties of cold recycled mixtures, mainly about the viscoelastic behavior. Using computational simulation by means of the 3D-Move software, this article discusses the influence of vehicle speed and the temperature variation on the mechanical properties of a pavement with cold recycled asphalt mixtures stabilized with asphalt emulsion (AEM) or foamed asphalt (FAM) as base layer materials. With the purpose of evaluating the longitudinal strains at the bottom of the asphalt concrete layer, it was observed that the cold recycled asphalt mixtures exhibit a viscoelastic behavior, since different combinations of vehicle speed and temperature result in different stresses and strains distributions in the wearing course layer. Besides, it was shown that when the viscoelastic properties of these materials are neglected the bearing capacity of the pavement structure is underestimated.Downloads
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