Effect of thermal ageing on the mechanical properties and cracking behaviour of asphalt concrete
| Autor: | H. Ben Dhia, A. Feeser, J.-F. Barthélémy, B. Kouevidjin, C. Somé |
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| Přispěvatelé: | Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet DIMA (Cerema Equipe-projet DIMA), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Sondra, CentraleSupélec, Université Paris-Saclay (SONDRA), ONERA-CentraleSupélec-Université Paris-Saclay, Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Centre-Est (Cerema Direction Centre-Est) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
thermal ageing
Materials science business.industry 020209 energy Phase angle 0211 other engineering and technologies Modulus 02 engineering and technology Bending Coupling (probability) Viscoelasticity Asphalt concrete Cracking Ageing 0202 electrical engineering electronic engineering information engineering Composite material asphalt concrete [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction business crack growth viscoelasticity 021101 geological & geomatics engineering |
| Zdroj: | RILEM International Symposium on Bituminous Materials, ISBM RILEM International Symposium on Bituminous Materials, ISBM, Dec 2020, Lyon, France RILEM Bookseries ISBN: 9783030464547 |
| Popis: | International audience; This article assesses the impact of ageing on the properties of asphalt concrete (AC) by combining experiments and numerical simulations. Rheological tests were performed at four thermal ageing duration (0, 3, 6 and 9 days). The results show an increase in the complex modulus and a decrease in phase angle with ageing time. For each ageing time, semi-circular bending tests were carried out under two loading rates (1. mm/min and 5. mm/min) and three temperatures (-20˚C, 0˚C and 20˚C). The results shown an increase of the peak load when the loading rate increases for each thermal ageing time and temperature. No meaningful variation of the peak load with respect to the ageing time was observed at low temperatures. However, it was found that at 20˚C, the peak load increases with ageing duration. A finite element modelling was implemented to simulate the force-deflexion curve, coupling viscoelastic behaviour and crack growth criterion. The results show a similarity between numerical and experimental results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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