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Hot In-Place Recycled Asphalt Mixtures: RAP Analysis, Compaction Characteristics and Field Evaluation

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  • Teng Wang

    (School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Xin Zhao

    (Shaanxi Transportation Planning and Design Institute Co., Ltd., Xi’an 710075, China)

  • Lele Zheng

    (School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Chengxin Mao

    (School of Civil Engineering, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Li Wang

    (Shandong Sanjian Group Co., Ltd., Jinan 250199, China)

  • Augusto Cannone Falchetto

    (Department of Civil Engineering, Aalto University, 02150 Espoo, Finland)

  • Dedong Guo

    (School of Transportation Civil Engineering, Shandong Jiaotong University, Jinan 250357, China)

Abstract

The substantial accumulation of reclaimed asphalt pavement (RAP) poses a pressing issue in road construction. The hot in-place recycling (HIR) technique has garnered widespread attention due to its high recycling rates of RAP and minimal environmental hazards. This study focuses on the RAP analysis, compaction characteristics, and field evaluation of hot in-place recycled asphalt pavements (HIRAP). Firstly, a novel test method of RAP analysis was proposed to evaluate the suitability of RAP. Subsequently, compaction tests reveal the compaction characteristics of hot in-place recycled asphalt mixture (HIRAM). Finally, the field performance of HIRAP was assessed. The research findings indicate that the RAP analysis method can accurately characterize the status of RAP. Increasing the RAP temperature improves the compaction characteristics of HIRAM. The field tests show that using HIR technology improves the performance of the pavement, in particular with a compaction of 99.7%. This study will establish a theoretical foundation for further promoting the HIR technique.

Suggested Citation

  • Teng Wang & Xin Zhao & Lele Zheng & Chengxin Mao & Li Wang & Augusto Cannone Falchetto & Dedong Guo, 2024. "Hot In-Place Recycled Asphalt Mixtures: RAP Analysis, Compaction Characteristics and Field Evaluation," Sustainability, MDPI, vol. 16(3), pages 1-19, January.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:3:p:1064-:d:1326992
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    References listed on IDEAS

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    1. Yuan, Dongdong & Jiang, Wei & Sha, Aimin & Xiao, Jingjing & Wu, Wangjie & Wang, Teng, 2023. "Technology method and functional characteristics of road thermoelectric generator system based on Seebeck effect," Applied Energy, Elsevier, vol. 331(C).
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