Performance evaluation of bio-oil and rubber compound modified asphalt mixture: Lower mixing temperature and carbon emission

Due to the high viscosity of high-content rubber modified asphalt, maintaining a high temperature for a long time is required when preparing rubber modified asphalt mixtures. This problem limits the attainment of ideal conditions in experimental research. Using the bio-oil could reduce the viscosity of rubber modified asphalt and thus reduced the mixing temperature of its mixtures. The objective of the manuscript is to propose production protocol of bio-oil rubber modified asphalt mixture (BRMAM) and evaluate its performance. The rubber (20 % mass ratio of modified asphalt) and bio-oil (5 % and 10 % mass ratio of modified asphalt) were used to prepare two types of the BRMAM under lower mixing temperature. The high-temperature stability, low-temperature anti-cracking, water stability and other mechanical performance were appraised. Based on the test results, the total deformation of the BRMAM decreased by 39.4 %, the Marshall modulus increased by 45.5 % compared to the neat asphalt mixture, and their fracture energy increased by 36.27 %. Under the condition of high stress ratio, the fatigue life of modified asphalt mixture rose by 32.4 %. The addition of crumb rubber could enhance the elastic recovery of BRMAM. The synergism of the bio-oil and crumb rubber could lower the mixing temperature without sacrificing the performance. This study provides a basis for BRMAM in the laboratory and field applications or similar scenarios. The study could contribute to the recycling of renewable resources and the reduction of carbon emission.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2024.137269
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061824024115
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Zhang, Wenhui
  • Ge, Dongdong
  • 0000-0003-2890-6552
  • Lv, Songtao
  • Cao, Sihao
  • Ju, Zihao
  • Duan, Wenjie
  • Yuan, Haoyun
• Publication Date: 2024-8-9

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 137269
• Serial:
  • Construction and Building Materials
  • Volume: 438
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0950-0618
  • Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1

Subject/Index Terms

• TRT Terms: Asphalt rubber; Carbon; Mixing; Performance tests; Pollutants; Vegetable oils
• Subject Areas: Environment; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01925335
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 25 2024 10:31AM