Performance Evaluation of Hot In-Place Recycled Asphalt Mixtures
Publication: International Conference on Road and Airfield Pavement Technology 2023
ABSTRACT
In this study, the road performance of hot in-place recycled asphalt mixture is systematically evaluated through laboratory tests. Four kinds of asphalt mixtures are selected for the study: AC-10 before regeneration, AC-16 before regeneration, AC-10 after regeneration, and AC-16 after regeneration. The high-temperature and low-temperature properties of the asphalt mixture before and after regeneration are evaluated by rutting test, semi-circular bending test, and small beam bending test. The freeze–thaw splitting test, four-point bending fatigue test, and dynamic modulus test are used to determine the water stability, fatigue life, and uniaxial compression dynamic modulus of the asphalt mixture before and after regeneration. The results show that the asphalt mixture before and after regeneration has better high-temperature performance, and the low-temperature performance and water stability of the asphalt mixture before regeneration were poor. The fatigue life of the mixture before regeneration is low and prone to brittle fracture. And the low-temperature performance, water stability, fatigue performance of the asphalt mixture after regeneration is better. The results of the study have important guiding significance for the research of hot in-place recycled asphalt mixtures.
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Information & Authors
Information
Published In
International Conference on Road and Airfield Pavement Technology 2023
Pages: 644 - 658
History
Published online: Feb 6, 2024
ASCE Technical Topics:
- Compression tests
- Dynamic modulus
- Engineering fundamentals
- Engineering materials (by type)
- Fatigue (material)
- Fatigue life
- Fatigue tests
- Laboratory tests
- Material mechanics
- Material properties
- Materials characterization
- Materials engineering
- Measurement (by type)
- Mechanical properties
- Mixtures
- Recycling
- Temperature effects
- Temperature measurement
- Tests (by type)
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