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FATIGUE ANALYSIS OF 12 BRAZILIAN ASPHALT BINDERS AND MIXTURES USING VISCOELASTIC CONTINUUM DAMAGE THEORY
  • +2
  • Evelyn Paniz Possebon,
  • Silvio Lisboa Schuster,
  • Victória Nunes-Ramos,
  • Luciano Pivoto Specht,
  • Deividi da Silva Pereira
Evelyn Paniz Possebon
Universidade Federal de Santa Maria

Corresponding Author:[email protected]

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Silvio Lisboa Schuster
Universidade Federal de Santa Maria
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Victória Nunes-Ramos
Universidade Federal de Santa Maria
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Luciano Pivoto Specht
Universidade Federal de Santa Maria
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Deividi da Silva Pereira
Universidade Federal de Santa Maria
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Abstract

not-yet-known not-yet-known not-yet-known unknown Fatigue characterization of asphalt mixtures is imperative for predicting pavement performance. Since cracking begins in asphalt binders, determining their fatigue properties helps establish cause-and-effect relationships with cracking in mixtures and pavements. This study analyzes the fatigue of 12 Brazilian asphalt binders and mixtures using the Linear Amplitude Sweep (LAS) test for binders and the Direct Tension Cyclic Fatigue test for mixtures. Results were interpreted with Simplified Viscoelastic Continuous Damage theory (S-VECD) and a pavement was simulated using FlexPAVE TM software. Findings indicate that binder type alone does not predict fatigue class through the fatigue factor of binder (FFB), necessitating rheological damage analysis. Most mixtures showed good performance in pavement simulations, with fatigue factor of mixtures (FFM) and fatigue classes not being sufficient for predicting fatigue performance. A linear correlation was found between FFB and FFM but not between FFB and simulated damage (N/Nf), though higher FFB typically result in lower N/Nf.
30 Aug 2024Submitted to Fatigue & Fracture of Engineering Materials & Structures
31 Aug 2024Submission Checks Completed
31 Aug 2024Assigned to Editor
19 Sep 2024Reviewer(s) Assigned