A LABORATORY AND STATISTICAL EVALUATION OF FACTORS AFFECTING RUTTING

This study seeks to identify the most important factors affecting rut potential of hot-mix asphalt. Mixture rut potential is determined using an asphalt pavement analyzer in the laboratory. Three sets of tests were conducted, with each set representing a matrix whose elements are rut factors. In Set A, seven factors, each at two levels, are examined using a mixture of limestone aggregates designed in accordance with Superpave method. The test results are analyzed statistically and results show that binder's performance grade, specimen type, test temperature and moisture in test specimen have a significant effect on a mixture's rutting performance. Wheel load, asphalt content and hose pressure at the selected levels in Set A appear to be less significant. In Set B, six factors (aggregate gradation, temperature, moisture, asphalt content, load and hose pressure) are investigated using one Hveem designed mixture with gravel aggregates. Significant factors were gradation, temperature, asphalt content and moisture. Similar results were found for Set C, which investigated five factors--temperature, gradation, moisture, load and hose pressure. A predicted rut depth and range of variation are also determined and verified for Set A. The detailed statistical procedure developed in this study can be applied to design and analyze test sets without the need for a full factorial approach.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/44544515
• Corporate Authors:

  Taylor & Francis

  4 Park Square, Milton Park
  Abingdon,   United Kingdom  OX14 4RN
• Authors:
  • Tarefder, R A
  • Zaman, Musharraf
  • Hobson, K
• Publication Date: 2003-3

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 59-68
• Serial:
  • International Journal of Pavement Engineering
  • Volume: 4
  • Issue Number: 1
  • Publisher: Taylor & Francis
  • ISSN: 1029-8436
  • Serial URL: http://www.tandf.co.uk/journals/titles/10298436.html

Subject/Index Terms

• TRT Terms: Aggregate gradation; Asphalt content; Asphalt pavements; Binders; Gravel; Hot mix asphalt; Laboratory tests; Limestone aggregates; Loads; Moisture content; Ruts (Pavements); Rutting; Specimens; Statistical analysis; Superpave; Temperature; Wheel loads
• Subject Areas: Data and Information Technology; Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00964773
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Oct 11 2003 12:00AM