Asphalt mixtures self-healing test protocol proposal based on the S-VECD model

Authors

  • Felipe do Canto Pivetta North Carolina State University, Carolina do Norte – Estados Unidos
  • Luis Alberto Herrmann do Nascimento Centro de Pesquisas Leopoldo Américo Miguez de Mello, Rio de Janeiro – Brasil
  • Lélio Antônio Teixeira Brito Universidade Federal do Rio Grande do Sul, Rio Grande do Sul – Brasil

DOI:

https://doi.org/10.14295/transportes.v28i4.2028

Keywords:

Asphalt, damage. Healing. Fatigue. Modeling.

Abstract

The phenomena associated with fatigue and healing of asphalt materials have their importance already recognized in several works. The present study applies the S-VECD model for direct tensile fatigue test in controlled strain mode for asphalt mixtures, with the insertion of rest periods, aiming at evaluating material’s self-healing (integrity recovery). From different rest periods, test temperature and material pseudo-stiffness levels, an internal state variable of healing (H) capable of modeling these conditions into a single parameter is proposed. The insertion of this internal state variable in a model that quantifies the material healing (%HS) in the characteristic damage curve space of the material - C versus S - provides a tool that accurately predicts the healing index of the evaluated mixture.

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Published

2020-11-16

How to Cite

Pivetta, F. do C., Nascimento, L. A. H. do, & Brito, L. A. T. (2020). Asphalt mixtures self-healing test protocol proposal based on the S-VECD model. TRANSPORTES, 28(4), 38–52. https://doi.org/10.14295/transportes.v28i4.2028

Issue

Vol. 28 No. 4 (2020): Prêmio ANPET Produção Científica 2019

Section

Artigos Vencedores do Prêmio ANPET Produção Científica

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