METHODS OF IMPROVING THE SKIDDING RESISTANCE OF CONCRETE SURFACES

FACTORS AFFECTING THE SKIDDING RESISTANCE OF CONCRETE ROADS ARE INVESTIGATED. DETAILS ARE GIVEN OF THE ACCELERATED WEAR MACHINE DEVELOPED, ACCELERATED WEAR TESTS AND ROAD TRIALS. THREE MAIN TOPICS ARE DISCUSSED: (1) DEVELOPMENT OF ROUGH TEXTURE ON NEW SURFACES; (2) EFFECT OF THE CONCRETE MIX; AND (3) DEVELOPMENT OF ROUGH TEXTURE ON OLD SURFACES. TO PRODUCE COARSE TEXTURE ON NEW CONCRETE, IT IS RECOMMENDED TO USE A BROOM MADE OF STEEL TAPE AND TO BRUSH THE SURFACE TRANSVERSELY TO THE DIRECTION OF THE TRAFFIC. A COMPARISON IS MADE OF THE EFFICIENCY OF VARIOUS TYPES OF BROOMS BY MEASURING WEAR, SIDEWAY FORCE COEFFICIENT, AND BRAKING FORCE COEFFICIENT. TO STUDY THE INFLUENCE OF THE CONCRETE MIX, WEARING AND POLISHING TESTS WERE CONDUCTED ON CONCRETE AND MORTAR CONTAINING AGGREGATES VARYING IN GRADING AND QUALITY. IT WAS FOUND THAT THE ADDITION OF FINE AGGREGATES WITH A HIGH RESISTANCE TO POLISHING, SUCH AS CALCINED BAUXITE, RESULTS IN AN INCREASE IN SKID RESISTANCE. WITH REGARD TO THE GROOVING OF OLD CONCRETE ROADS, A DIAMOND PATTERN AND WIDE GROOVES AT WIDE SPACING SEEM THE MOST EFFICIENT WAYS OF IMPROVING SKIDDING RESISTANCE. /LCPC/RRL/

• Supplemental Notes:
  • Vol 2, pp 281-291, 10 FIG, 1 TAB, 1 PHOT, 4 REF
• Corporate Authors:

  European Cement Association /France

  ,    
• Authors:
  • Kirkham, R H
  • Maynard, D P
• Publication Date: 1969-7

Subject/Index Terms

• TRT Terms: Accelerated tests; Admixtures; Bauxite; Calcines; Concrete pavements; Durability tests; Fine aggregates; Mortar; Pavement grooving; Polished aggregates; Road tests; Roughness; Skid resistance; Steel; Surface course (Pavements); Texture; Wear
• Old TRIS Terms: Brushes; Grooves
• Subject Areas: Highways; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00206845
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Apr 25 1971 12:00AM