Investigating the Freeze-Thaw Damage in Asphalt Concrete Using Imaging Techniques

In cold regions, asphalt concrete (AC) pavements experience freeze-thaw (F-T) cycles. F-T cycles can cause damage and disintegration of AC mixtures, which cause significant operational problems and a reduction in the service life of AC pavements. The evolution of the internal structure of an AC mix due to exposure to F-T cycles should be explored to have a better understanding of the mechanism of F-T damage in the mix. In this study, different AC specimens were evaluated before and after F-T cycles using two techniques: indirect tension test (IDT) to evaluate strength deterioration of specimens, and imaging techniques to capture changes in the internal structure of specimens. Three imaging techniques were used in this project: digital camera, stereomicroscope, and X-ray computer tomography (CT) scan system. Each technique has its potentials to show the internal damage details. AC specimens have been assessed at different levels of F-T cycles. 2D and 3D images for the internal structure of the specimens were collected and analyzed at 0, 15, 30 and 45 F-T cycles. The captured images will be analyzed to quantify the F-T damage according to adhesion failure (%), cohesion failure (%), broken aggregate (%), and the total length of microcracks (mm). The results from image analysis will be correlated to IDT results.

• Record URL:
  https://www.tac-atc.ca/sites/default/files/conf_papers/alawnehm-investigating_the_freeze-thaw_damage_in.pdf
• Corporate Authors:

  Transportation Association of Canada

  ,    
• Authors:
  • Alawneh, M
  • SOLIMAN, H
  • ANTHONY, A
• Conference:
  • Transportation Association of Canada 2020 Conference and Exhibition - The Journey to Safer Roads
• Publication Date: 2020

Language

• English

Media Info

• Media Type: Web
• Pagination: 1 PDF file, 2.4 MB, 21p.
• Monograph Title: Transportation Association of Canada 2020 Conference and Exhibition - The Journey to Safer Roads

Subject/Index Terms

• TRT Terms: Bituminous mixtures; Conferences; Flexible pavements; Freeze thaw durability; Image processing; Loss and damage; Tension; Tests
• Geographic Terms: Canada
• ITRD Terms: 4967: Bituminous mixture; 8018: Canada; 8525: Conference; 1614: Damage; 2944: Flexible pavement; 2577: Freezing thawing cycle; 8633: Image processing; 5502: Tension; 6255: Test
• Subject Areas: I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 01759511
• Record Type: Publication
• Source Agency: Transportation Association of Canada
• Files: ITRD, TAC
• Created Date: Dec 1 2020 1:58PM