Effect of Blending Behavior on the Performance of Hot Recycled Asphalt Mixtures

Teng Wang, Xianwu Ling, Jun Lin, Bing Xiang, Dongdong Yuan, Wentong Wang (), Di Wang and Dedong Guo ()
Additional contact information
Teng Wang: School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
Xianwu Ling: School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
Jun Lin: Jiangxi Provincial Highway Engineering Inspection Center, Nanchang 330000, China
Bing Xiang: School of Civil Engineering, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
Dongdong Yuan: School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
Wentong Wang: School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
Di Wang: Department of Civil Engineering, Aalto University, 02150 Espoo, Finland
Dedong Guo: School of Transportation Civil Engineering, Shandong Jiaotong University, Ji’nan 250357, China

Sustainability, 2023, vol. 15, issue 15, 1-18

Abstract: Blending behavior is the main factor influencing hot recycled asphalt mixtures’ actual and design performance. The following steps were taken to investigate the above issues. Firstly, the component changes of asphalt mixtures were studied by thin-layer chromatography, with flame ionization detection to obtain the mechanism of asphalt aging and recycling. Secondly, according to the difference in the recycled asphalt components, the hot recycled asphalt mixtures were optimized based on the Marshall design method. Lastly, the hot recycled asphalt mixtures for the three mixing processes were prepared using the optimized design method described above. Laboratory tests were conducted to evaluate the correlation between the degree of blending (DoB) and the high-temperature stability, low-temperature crack resistance, water stability, and fatigue performance. The test results indicate that reducing light components (saturates and aromatics) and increasing heavy components (asphaltenes and resins) are the main reasons for asphalt aging, and asphalt recycling is an inverse process. Additionally, the performance of hot recycled asphalt mixtures is improved with an increase in DoB. Specifically, the DoB is only 50% to 60% under a normal mixing process, but by adjusting parameters the DoB will increase to 80% to 90%.

Keywords: hot recycled asphalt mixtures; asphalt component; blending behavior; optimization design; road performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/15/11723/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/15/11723/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:15:p:11723-:d:1205982

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().