Proposta de um modelo geométrico e computacional para simulação de fluência estática em concretos asfálticos
DOI:
https://doi.org/10.14295/transportes.v27i4.1859Keywords:
Finite Elements, Asphalt mixture, Static creep, Coarse aggregates.Abstract
In this paper, the authors aim to represent, in a simplified way, the solid skeleton relative to the coarse aggregates in a hot asphalt mixture. The objective is to incorporate the coarse aggregates in the numerical modeling of the material using the Finite Element Method. The grain size distribution and shape of the coarse aggregates are analyzed and considered in the geometric model, using a three-dimensional random packing technique. From the constitutive point of view, the coarse aggregates are simulated as linear elastic solids, while the Matrix of Fine Aggregates is considered a viscoelastic continuum material. To validate the model, experimental results of a creep and recovery test are compared to the results of virtual tests simulated using the proposed technique, attaining excellent agreement.Downloads
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