Factors That Affect Cracking Performance in Hot-Mix Asphalt Mix Design

It is well known that cracking resistance of hot-mix asphalt (HMA) mixtures is influenced by many factors, such as the asphalt binder type, binder content, aggregate gradation, aggregate type, and volumetric parameters of mixtures. The Texas Transportation Institute’s overlay tester (OT) was used to evaluate cracking performance in terms of number of cycles to failure (N sub OT), and an experimental design was undertaken to cover the many combinations of aggregates, gradations, and asphalt binders. Through extensive laboratory tests and statistical analyses, the most significant factors that affected cracking performance were identified. Corresponding N sub OT prediction models were developed with high R² values (approximately .9). With these models, the minimum asphalt content for different HMA mixtures was estimated, and the lower limits of asphalt content during mix design were recommended. Finally, the models and recommended values were preliminarily verified with asphalt overlay test sections on Interstate 20 near Atlanta, Texas.

• Record URL:
  • https://doi.org/10.3141/2210-05
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=Factors+That+Affect+Cracking+Performance+in+Hot-Mix+Asphalt+Mix+Design&author=S.+Hu&author=F.+Zhou&author=T.+Scullion&publication_year=2011
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309167468
• Authors:
  • Hu, Sheng
  • Zhou, Fujie
  • Scullion, Thomas
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 37-46
• Monograph Title: Asphalt Materials and Mixtures 2011, Volume 4
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2210
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Aggregate gradation; Aggregates; Asphalt content; Asphalt mixtures; Bituminous binders; Cracking; Failure analysis; Hot mix asphalt; Laboratory tests; Mathematical models; Mix design; Statistical analysis; Test sections
• Geographic Terms: Atlanta (Texas)
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01356809
• Record Type: Publication
• ISBN: 9780309167468
• Report/Paper Numbers: 11-2460
• Files: TRIS, TRB, ATRI
• Created Date: Nov 15 2011 8:18AM