EFFECT OF PG BINDER GRADE AND SOURCE ON PERFORMANCE OF SUPERPAVE MIXTURES UNDER HAMBURG WHEEL TESTER

This study assesses whether the Performance Grade (PG) binder grade and source for the Superpave mixture used in a Kansas highway construction project had any impact on the premature rutting observed. The effects of PG binder and its source were studied with the Hamburg wheel tester, and the effect of compaction of the Superpave mix before wheel testing was also investigated. The analysis of variance technique was used to analyze the test results. Results showed that the PG70-28 binder grade appeared to perform better than the other PG binders used in this study. Findings also indicate that the Superpave mixtures showed significant differences in performance in terms of the number of repetitions to reach 20 mm rut depth and the stripping inflection point when compared by binder source. Superpave mixture compacted to 7% air voids was shown to perform much better than the mixture compacted to 9% air voids.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 11p
  • Monograph Title: MID-CONTINENT TRANSPORTATION RESEARCH SYMPOSIUM (AMES, IOWA, AUGUST 21-22, 2003). PROCEEDINGS

Subject/Index Terms

Filing Info

  • Accession Number: 00963340
  • Record Type: Publication
  • ISBN: 0965231062
  • Files: TRIS
  • Created Date: Sep 18 2003 12:00AM