THE DESIGN AND CONSTRUCTION OF A CIRCULAR WEAR TRACK

The report describes a test apparatus For Determining The Wear Resistance of Pavement Surface Materials. The apparatus employs a high torque, low speed, hydraulic vane motor as a direct rotating drive for the axle-wheel assemblies. Tire path radius change is provided by a reciprocating vertical hydraulic cylinder connected to a rack and pinion mechanism. The rate of path radius change relative to tire speed is controlled by an adjustable flow divider. A variable displacement axial piston pump, driven by an electric motor permits infinite adjustment of the rotational speed. The mean tire path diameter is fifteen feet, with a radius change capability of six inches. Features of the apparatus include simplicity of design, high expected reliability, minimal maintenance, protection against overloads during start up and shutdown, and ease of control.

  • Record URL:
  • Supplemental Notes:
    • Prepared in cooperation with Arkansas State Highway Dept., Little Rock.
  • Corporate Authors:

    University of Arkansas, Fayetteville

    Department of Mechanical Engineering
    Fayetteville, AR  United States  72701

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Arkansas State Highway Department

    Division of Planning and Research, P.O. Box 2261
    Little Rock, AR  United States  72203
  • Authors:
    • Helms, JEJ
    • Gleason, J G
    • Green, S
    • Cole, J H
  • Publication Date: 1975-8

Media Info

  • Pagination: 56 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00136807
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Final Rpt.
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: Jul 13 1976 12:00AM