Application of Asphalt-aggregates Interfacial Energies to Evaluate Moisture-induced Damage of Warm Mix Asphalt

With increasing environmental awareness and high oil prices, use of warm mix asphalt (WMA) is gaining popularity in the asphalt industry. Different WMA technologies including use of additives to reduce the mixing and compaction temperatures are being applied. The present study uses the surface free energy (SFE) method as a mechanistic framework to evaluate the moisture susceptibility of warm mix asphalt (WMA) with Evotherm® WMA-additive. The SFE components of a modified PG64-22 asphalt binder with different percentages of Evotherm® and selected aggregates were measured in the laboratory. The work of adhesion, the work of debonding, and energy ratios were estimated to assess the moisture-induced damage potential of combinations of neat and Evotherm®-modified asphalt binders and different aggregates. The results indicated that use of Evotherm® resulted in increase in total SFE and work of adhesion and a reduction in the work of debonding, indicating a better possible aggregate-asphalt binder bond and lower moisture susceptibility potential. It is expected that the present study would be helpful in understanding the moisture-damage potential of flexible pavements constructed with WMA technologies.

• Record URL:
  • https://doi.org/10.1016/j.sbspro.2013.11.095
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S1877042813044868
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18770428
• Supplemental Notes:
  • © 2013 Rouzbeh Ghabchi et al.
• Authors:
  • Ghabchi, Rouzbeh
  • Singh, Dharamveer
  • Zaman, Musharraf
  • Tian, Qingyan
• Conference:
  • 2nd Conference of Transportation Research Group of India (2nd CTRG)
  • Location: Agra , India
  • Date: 2013-12-12 to 2013-12-15
• Publication Date: 2013-12-2

Language

• English

Media Info

• Media Type: Digital/other
• Features: Glossary; Photos; References; Tables;
• Pagination: pp 29-38
• Serial:
  • Procedia - Social and Behavioral Sciences
  • Volume: 104
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 1877-0428
  • Serial URL: http://www.sciencedirect.com/science/journal/18770428/53
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Adhesion; Aggregates; Asphalt mixtures; Binders; Debonding; Moisture damage; Warm mix paving mixtures
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01502162
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 23 2013 10:38AM