Transfer of RAP binder and its influence on recycled HMA under three mixing techniques
Source abstract
Abstract
This study aims to identify the difference in the mobilisation degree of RAP asphalt binder under three mixing techniques and its influences on the performance of recycled hot-mix asphalt mixture (HMA). Glass beads were selected to replace parts of fresh coarse aggregates, and to analyze the transfer of RAP binder using Fourier Transformation Infrared (FTIR) spectroscope analysis. Superpave Gyratory Compactor (SGC) and Hamburg Wheel-Track Device (HWTD) were used to evaluate the compaction property and the high-temperature performance of recycled HMA. Results showed that the relative percentage of reclaimed asphalt recovered (Rp) varied with the mixing techniques. The workability of recycled HMA is related to the mixing technique. The softer fresh asphalt binder is more capable of facilitating the mineral aggregates to form a stable skeleton structure. In addition, the transfer of RAP binder in recycled HMA may be an important factor influencing the skeleton structure.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, China Three Gorges University, Yichang, Hubei, People’s Republic of China
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, Shaanxi, People’s Republic of China
School of Energy and Architecture, Xi’an Aeronautical University, Xi’an, Shaanxi, People’s Republic of China
National & Local Joint Engineering Laboratory of Transportation and Civil Engineering Materials, Chongqing Jiaotong University, Chongqing, People’s Republic of China
Funding
department of education of Hubei province
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