A Case Study: Assessing the Sensitivity of the Coefficient of Thermal Contraction of AC Mixtures on Thermal Crack Prediction

Thermal cracking results in both structural and functional problems in asphalt concrete (AC) pavements. A critical parameter affecting the buildup of thermal stresses that ultimately lead to cracking in AC pavements is the coefficient of thermal contraction (CTC) of the AC mixture. The objective of this study is to assess the sensitivity of CTC of AC mixture on thermal cracking. Values of CTC of AC mixtures were identified through literature review, while other relevant data needed for thermal cracking prediction were obtained for three AC mixtures from the new Mechanistic-Empirical Pavement Design Guide (MEPDG) documentation. Finally, the amount of thermal cracking, in terms of length and percent damage, was predicted using the new (MEPDG) software. Results showed that the sensitivity of CTC of AC mixtures on thermal cracking is highly material dependent. The greatest sensitivity was observed with medium strength and ductile AC mixture.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784408254
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Yin, Hao
  • Chehab, Ghassan R
  • Stoffels, Shelley M
• Conference:
  • Asphalt Concrete Simulation, Modeling, and Experimental Characterization. R. Lytton Symposium on Mechanics of Flexible Pavements
  • Location: Baton Rouge LA, United States
  • Date: 2005-6-1 to 2005-6-3
• Publication Date: 2006

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 115-123
• Monograph Title: Asphalt Concrete Simulation, Modeling, and Experimental Characterization. Proceedings of the R. Lytton Symposium on Mechanics of Flexible Pavements, June 1-3, 2005, Baton Rouge, Louisiana

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt concrete pavements; Case studies; Ductility; Forecasting; Mixtures; Sensitivity; Software; Strength of materials; Thermal degradation
• Identifier Terms: Mechanistic-Empirical Pavement Design Guide
• Uncontrolled Terms: Coefficient of thermal contraction
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01041400
• Record Type: Publication
• ISBN: 0784408254
• Files: TRIS
• Created Date: Jan 30 2007 1:29PM