Final report: evaluation of rutting potential of Oregon surface mixes

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 laboratory 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 or 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-mixes 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.

• Corporate Authors:

  Oregon Department of Transportation

  555 13th Street NE
  Salem, OR  United States  97301
• Authors:
  • Hicks, R G
  • Sosnovske, D
  • Leahy, R
• Publication Date: 1995-9

Language

• English

Media Info

• Pagination: 71p + appendices
• Serial:
  • Issue Number: FHWA-OR-RD-95-02

Subject/Index Terms

• TRT Terms: Bituminous pavements; Mix design; Pavement performance; Rutting; Test procedures
• ATRI Terms: Bituminous pavement; Mix design; Pavement performance; Rutting; Test method
• Subject Areas: Design; Highways; Pavements;

Filing Info

• Accession Number: 01399254
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI, STATEDOT
• Created Date: Aug 23 2012 6:38PM