EVALUATION OF RUTTING POTENTIAL OF OREGON SURFACE MIXES. FINAL REPORT

The purpose of this study was to evaluate the rutting potential of selected asphalt concrete mixes used in Oregon. Dense- and open-graded, as well as large stone, mixes were considered. The experimental design included one asphalt cement, two aggregates, and nine different combinations of mix type and lift thickness. Specimens were fabricated in the lab by means of rolling wheel compaction and then evaluated by two methods: the LCPC (Laboratoire Central des Ponts et Chaussees) wheel tracking device and the simple shear device developed as part of the Strategic Highway Research Program (SHRP). With the wheel tracking device, rutting potential was characterized in terms of rut depth and rutting potential; with the simple shear device, rutting potential was characterized in terms of cumulative permanent shear strain. The wheel tracking and simple shear devices did discriminate among the various mix types. Based on these limited data, the relative ranking of mixes with respect to rutting potential is A > B > C > F (best to worst) in the simple shear device and B = C > A > F in the LCPC rut tester. The limited laboratory testing of the F-mixes (open-graded) suggests that it might be prone to rutting which is contradictory to its observed performance in the field. Also, the layered F-mixes performed better than did the F-mix alone. Additional testing with increased confinement, in both the wheel tracking and shear devices, is clearly warranted. Finally, additional laboratory test data would permit the development of performance criteria for the Oregon mixes in terms of both test devices.

• Record URL:
  http://www.oregon.gov/ODOT/Programs/ResearchDocuments/EvalOfRuttingPotential.pdf
• 
• Corporate Authors:

  Oregon Department of Transportation

  Research Section, 2950 State Street
  Salem, OR  United States  97310

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Hicks, R G
  • Sosnovske, D
  • Leahy, R
• Publication Date: 1995-9

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 141 p.

Subject/Index Terms

• TRT Terms: Aggregate mixtures; Asphalt concrete; Dense graded aggregates; Equipment; Laboratory tests; Mixtures; Open graded aggregates; Rutting; Shear properties; Shear strain; Stone
• Uncontrolled Terms: Dense graded mixes; Rut depth; Wheel tracking device
• Old TRIS Terms: Large stone mixes; Simple shear device
• Subject Areas: Geotechnology; Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00720119
• Record Type: Publication
• Report/Paper Numbers: FHWA-OR-RD-95-02, TRI 94-6
• Contract Numbers: SPR 5291
• Files: TRIS, USDOT, STATEDOT
• Created Date: Apr 10 1996 12:00AM