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Abstract
Due to the reduction of CO2 emissions during the production of asphalt mixtures and the decrease in the demand for mineral resources, the addition of reclaimed asphalt pavement (RAP) is becoming indispensable. The durability of asphalt pavements containing a high RAP content may be reduced due to a decrease in the cracking resistance of the material, especially under the influence of operational aging. The article presents the results of tests and analysis of fracture susceptibility of asphalt concretes with the addition of RAP (binder replacement ratio BR = 0.2 and 0.4), considering long-term aging. Asphalt mixtures were evaluated based on the semi-circular bending (SCB) test at intermediate temperature. It can be concluded that the addition of RAP with BR = 0.2 causes a decrease in fracture resistance comparable to that of the mixture without RAP but after long-term aging. The addition of RAP reduces the Flexibility Index (FI) by approximately 40% for short-term aging and 30% for long-term aging.
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Keywords
Details
- Category:
- Monographic publication
- Type:
- rozdział, artykuł w książce - dziele zbiorowym /podręczniku w języku o zasięgu międzynarodowym
- Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Szydłowski C.: Fracture susceptibility of high RAP content asphalt concrete in terms of aging// Bituminous Mixtures and Pavements VIII/ : , 2024, s.594-601
- DOI:
- Digital Object Identifier (open in new tab) 10.1201/9781003402541-70
- Sources of funding:
-
- IDUB
- Verified by:
- Gdańsk University of Technology
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