Rheological and dynamic strain rate studies of wax-coated granular composites used in sports surfaces

J. W. Bridge, A. Kiziltas, D. J. Gardner, M. L. Peterson, C. W. McIlwraith

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Dynamic mechanical thermal analysis (DMTA) tests were conducted on high-oil content, paraffin-based wax used in wax-coated granular composites. These composites make up the surface of synthetic Thoroughbred horse racetracks used in North America. The modulus and damping response from the DMTA tests were correlated with the dynamic triaxial shear strength response of the bulk track material taken at two different operational temperatures and at four strain rates. The purpose of these tests is to understand the mechanisms of shear strengthening of the bulk track material as the wax is heated through the first crystalline solid to liquid nominal transition temperature. Previous work using differential scanning calorimetry confirmed that under common operational surface temperatures, the wax coatings undergo distinct thermal transitions. The resulting increase in triaxial shear strength values affects the consistency of the racetrack which, in turn, can potentially affect Thoroughbred racing performance and safety of the track surface.

Original languageEnglish
Title of host publicationEPD Congress 2011 - Held During TMS 2011 Annual Meeting and Exhibition
Pages319-326
Number of pages8
DOIs
StatePublished - 2011
EventEPD Congress 2011 - TMS 2011 Annual Meeting and Exhibition - San Diego, CA, United States
Duration: Feb 27 2011Mar 3 2011

Publication series

NameTMS Annual Meeting
Volume1

Conference

ConferenceEPD Congress 2011 - TMS 2011 Annual Meeting and Exhibition
Country/TerritoryUnited States
CitySan Diego, CA
Period2/27/113/3/11

Keywords

  • Dynamic mechanical thermal analysis (DMTA)
  • Dynamic strain rate
  • Granular composites
  • Paraffin and microcrystalline wax
  • Synthetic horse tracks
  • Triaxial shear strength

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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