Correlação da energia de fratura com parâmetros reológicos de ligantes e más$ques asfál$cos

Authors

  • Vivian Silveira dos Santos Bardini Instituto de Ciência e Tecnologia - Universidade Estadual Paulista - UNESP
  • Luis Miguel Gutiérrez Klinsky Centro de Pesquisas Rodoviárias – CCR Nova Dutra
  • José Leomar Fernandes Júnior Universidade de São Paulo - Escola de Engenharia de São Carlos
  • Reynaldo Roque Universidade da Flórida

DOI:

https://doi.org/10.14295/transportes.v26i1.1150

Keywords:

Mineral filler, Asphaltic mastic, Rheological properties, Fracture energy.

Abstract

The fracture energy is a property related to the contribu$on of asphalt binders to the fa$gue resistance of asphalt mixtures and therefore has great influence on the mechanical behavior of flexible pavements, par$cularly in the development and propaga$on of cracks. This research aims to contribute to a beLer understanding of the effects of mineral fillers on the fa$gue cracking of asphalt mixtures, at intermediate temperatures, through the Binder Fracture Energy (BFE) test, developed at the University of Florida, with determina$on of the fracture energy as a func$on of the type and content of mineral fillers and asphalt binder. The results show that the fracture energy can be related to the dynamic shear modulus (G *) and phase angle (δ), obtained from tests in the dynamic shear rheometer (DSR), and with the s$ffness [S (t)] and the relaxa$on modulus [m (t)], obtained from tests in the bending beam rheometer (BBR). Howevver, all correla$ons are weak, reinforcing the hypothesis that the best way to predict the fa$gue performance of an asphalt is using fundamental proper$es, like the fracture energy.

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Published

2018-04-30

How to Cite

Bardini, V. S. dos S., Klinsky, L. M. G., Fernandes Júnior, J. L., & Roque, R. (2018). Correlação da energia de fratura com parâmetros reológicos de ligantes e más$ques asfál$cos. TRANSPORTES, 26(1), 1–15. https://doi.org/10.14295/transportes.v26i1.1150

Issue

Vol. 26 No. 1 (2018)

Section

Artigos

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