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:
- Prepared in cooperation with Arkansas State Highway Dept., Little Rock.
University of Arkansas, FayettevilleDepartment of Mechanical Engineering
Fayetteville, AR United States 72701
Washington, DC United States 20590
Little Rock, AR United States 72203
- Helms, JEJ
- Gleason, J G
- Green, S
- Cole, J H
- Publication Date: 1975-8
- Pagination: 56 p.
- TRT Terms: Circular test tracks; Design; Durability; Equipment maintenance; Equipment tests; Highways; Maintenance; Operations; Pavements; Performance; Skid resistance; Skidding; Test facilities; Testing equipment; Velocity
- Old TRIS Terms: Radius of gyration; Test equipment
- Subject Areas: Administration and Management; Design; Highways; Maintenance and Preservation; Pavements;
- 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