Investigation into Crack Healing of Asphalt Mixtures Using Healing Agents

This study investigated the crack healing ability of aged and unaged AC-13 basalt asphalt mixtures using five healing agents. Notched semicircular asphalt mixtures were cracked and healed using the healing agents and the recovered critical load at fracture was adopted as a healing indicator. Crack healing was found to be dependent on the type of healing agent, healing time and aging of mixture. A maximum healing up to 73% was obtained after 8 days of uninterrupted healing. Multiple fracturing-rehealing of the healed mixture didn’t significantly affect the healing index (HI) of the successive cycles. The re-healing performance was sensitive to the drying rate of healing agents, and a high drying rate reduced the re-healing performance. The first day of healing had the highest contribution to the ultimate healing potential, and further increase in the healing duration resulted in a steady increase in healing index. The high healing performance indicated that carefully selected healing agents have the potential to heal cracks in asphalt pavements.

• Record URL:
  https://doi.org/10.1016/j.conbuildmat.2017.11.074
• Record URL:
  https://www.sciencedirect.com/science/article/pii/S0950061817322833
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • Abstract reprinted with permission of Elsevier.
• Authors:
  • Riara, Martin
  • Tang, Ping
  • Mo, Liantong
  • Javilla, Barugahare
  • Wu, Shaopeng
• Publication Date: 2018-2-10

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: pp 45-52
• Serial:
  • Construction and Building Materials
  • Volume: 161
  • 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 mixtures; Cracking; Pavement maintenance
• Uncontrolled Terms: Healing (Materials)
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01664770
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 29 2018 9:34AM