Characterization of the fatigue behavior of asphalt binders, FAMs, and AC mixtures based on multiscale approaches and the S-VECD model

• Published in: Construction & building materials 2023-08, Vol.394, p.132165, Article 132165
• Main Authors: Hennig Osmari, Patrícia, Figueiredo Mathias Leite, Leni, Herrmann do Nascimento, Luis Alberto, Pinto Espíndola, Rogério, Sacramento Aragão, Francisco Thiago
• Format: Article
• Language: English
• Subjects: Asphalt binder; Asphalt concrete; FAM; Fatigue multiscale characterization; Uniaxial test
• ISSN: 0950-0618; 1879-0526
• DOI: 10.1016/j.conbuildmat.2023.132165

•Several multiscale models have been proposed in the literature to link the characteristics of asphaltic materials in different length scales.•Additional investigations are required to provide deeper insights into the correlations among the undamaged and damaged behaviors of binder, FAM, and AC.•The characterization of FAM and AC in tests considering the same loading configuration has not been often pursued and allows direct comparisons between these materials. Although investigations on upscaling methodologies across binder, Fine Aggregate Matrix (FAM), and Asphalt Concrete (AC) have been reported in the literature, additional evaluations should be performed considering the characteristics of the materials. This study investigates the relationship between the fatigue damage behavior of asphaltic material constituents based on a correlational assessment, as well as on experimental and analytical approaches. For that, rheological properties of asphalt binders were determined and AC and FAM were characterized by uniaxial tests. The fatigue parameters presented strong correlations across the scales and upscaling experimental equations were obtained from experimental data with good and promising results.