Multi-parametric characterization of mode I fracture toughness of asphalt concrete: Influence of void and RA contents, binder and aggregate types

This study aims to evaluate the fracture toughness (KIc) in mode I cracking using semi-circular bending test (SCB). Experiment has been performed to investigate the influence of bitumen grade (using P15/25 and P50/70 bitumens), reclaimed asphalt (RA) content (using 0%, 20% and 40% RA contents) and temperature (using -20 °C, -5 °C, 10 °C test temperatures), through ANOVA. Additional investigations have been performed: (i) to evaluate the effect of the use of polymer modified bitumen (PMB), (ii) to evaluate the effect compactness using 5% and 8% air void contents, (iii) to evaluate the effect of aggregate type using siliceous-limestone and porphyry aggregates. The results show an important decrease in KIc when temperature increases from -5 °C to 10 °C and a slight decrease between -20 °C and -5 °C. The results also show that increasing RA content increases slightly the KIc. It was found from the ANOVA that the influent parameters can be ranked as follows: temperature, RA content and binder grade. The investigations show that PMB increases the KIc value than pure bitumens. Porphyry aggregates increase the KIc by about 16% than silica-limestone aggregates at low temperatures between -20 °C and -5 °C. However, this ranking is slightly inverted at 10 °C. In addition, KIc decreases by about 12% at 10 °C with an increase in air voids (by 5% to 8%). Void content effect is more significant at -5 °C and 10 °C, and negligible at -20 °C.

• Record URL:
  • https://doi.org/10.1016/j.ijprt.2017.10.004
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S1996681417300123
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19966814
• Supplemental Notes:
  • © 2017 Chinese Society of Pavement Engineering.
• Authors:
  • Somé, Saannibe Ciryle
  • Fredj, Montassar Abdhelack
  • Nguyen, Mai-Lan
  • Feeser, Arnaud
  • Pavoine, Alexandre
• Publication Date: 2018-5

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 274-284
• Serial:
  • International Journal of Pavement Research and Technology
  • Volume: 11
  • Issue Number: 3
  • Publisher: Chinese Society of Pavement Engineering
  • ISSN: 1996-6814
  • EISSN: 1997-1400
  • Serial URL: http://www.ijprt.org.tw/index.php
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Air voids; Analysis of variance; Asphalt concrete; Bituminous mixtures; Fracture properties; Polymer asphalt; Porphyry; Reclaimed asphalt pavements; Temperature
• Uncontrolled Terms: Binder grade; Semi-circular bending test; Siliceous limestones
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01668757
• Record Type: Publication
• Files: TRIS
• Created Date: May 9 2018 9:45AM