Abstract
This research presents an experimental and numerical approach to study the mechanics of asphalt matrix, a crucial component in asphalt concrete. Understanding its response is essential to guide the new designs in advanced asphalt concrete. The dynamic mechanical analysis (DMA) is used to execute a variety of quasi-static and dynamic tests under tension and compression. Uniaxial tests reveal a remarkable rate-dependent compression-tension (C-T) asymmetry of the asphalt matrix in terms of stiffness and strength. The creep rupture envelop is derived by performing creep tests at different stress levels. Amplitude and frequency sweep tests and fatigue-recovery test are performed to explore the fatigue response. A user-material visco-elasto-plastic-damageable (VEPD) model is developed to simulate the asphalt via finite element method (FEM).
| Original language | English |
|---|---|
| Title of host publication | Proceedings M2D2022 |
| Subtitle of host publication | 9th International Conference on Mechanics and Materials in Design |
| Editors | J. F. Silva Gomes, Shaker A. Meguid |
| Publisher | Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial (INEGI) |
| Pages | 637-638 |
| Number of pages | 2 |
| ISBN (Print) | 9789895475636 |
| Publication status | Published - 2022 |
| Externally published | Yes |
Keywords
- asphalt matrix
- visco-elasto-plastic-damageable model
- compression-tension asymmetry
- DMA
- FEM