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

Teng Wang, Xin Zhao, Lele Zheng, Chengxin Mao, Li Wang (), Augusto Cannone Falchetto () and Dedong Guo
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Teng Wang: School of Highway, 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
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

Sustainability, 2024, vol. 16, issue 3, 1-19

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.

Keywords: hot in-place recycling; reclaimed asphalt pavement; compaction characteristics; volume of voids; field evaluation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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