MACROTEXTURE MEASUREMENT AND RELATED SKID RESISTANCE AT SPEEDS FROM 20 TO 60 MILES PER HOUR

MACROTEXTURE IS ONE OF THE MANY VARIABLES AFFECTING THE INTERACTION AT THE TIRE-PAVEMENT INTERFACE; HOWEVER, AT PRESENT ITS RELATIVE IMPORTANCE IS QUESTIONED. FRICTION TESTS OBTAINED AT 20, 40, AND 60 MPH WITH THE TEXAS HIGHWAY DEPARTMENT RESEARCH SKID TRAILER AND MACROTEXTURE TESTS UTILIZING 4 DIFFERENT METHODS WERE CONDUCTED ON 41 PAVEMENT SURFACES. THESE SURFACES EXHIBITED WIDELY DIFFERENT FRICTION LEVELS, FRICTION-SPEED GRADIENTS, DRAINAGE CAPABILITIES, MINERALOGICAL PROPERTIES, AND TEXTURE CLASSIFICATIONS. MACROTEXTURE VALUES OBTAINED WITH THE 4 METHODS ARE COMPARED. THE EFFECTS OF MACROTEXTURE TYPES AND MAGNITUDES ON FRICTION NUMBERS AND FRICTION-SPEED GRADIENTS ARE STATISTICALLY ANALYZED AND PLOTTED. BRIEF DESCRIPTIONS OF SEVERAL MACROTEXTURE MEASUREMENT METHODS USED BY AGENCIES IN THE UNITED STATES AND OTHER COUNTRIES ARE PRESENTED. FOR THE TREADED-TIRE AND 0.020-IN. WATER-FILM THICKNESSES USED IN THIS STUDY, MACROTEXTURE WAS FOUND TO HAVE LITTLE EFFECT ON FRICTION LEVEL, BUT DID APPRECIABLY INFLUENCE THE PERCENTAGE DECREASE IN FRICTION WITH SPEED. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1970/341/341-006.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Characteristics of Aggregates and Fillers for Bituminous Construction and presented at the 49th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Rose, Jerry G
  • Gallaway, Bob M
  • Hankins, Kenneth D
• Conference:
  • 49th Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1970-1-12 to 1970-1-16
• Publication Date: 1970

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 33-45
• Monograph Title: Aggregates and skid resistance of bituminous pavements
• Serial:
  • Highway Research Record
  • Issue Number: 341
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Films (Coatings); Friction; Friction tests; Highway grades; Macrotexture; Measurement; Methodology; Pavements; Roughness; Skid resistance; Slopes; Speed; Statistical analysis; Surfaces; Thickness; Tire treads; Tires; Water
• Old TRIS Terms: Plotting; Water film
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Materials; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00211613
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 8 1971 12:00AM