| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6716687 | Construction and Building Materials | 2018 | 8 Pages |
Abstract
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 8â¯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.
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Martin Riara, Ping Tang, Liantong Mo, Barugahare Javilla, Shaopeng Wu,