FOUR YEARS EXPERIENCE AT THE BRAMPTON TEST ROAD

IN 1965, THIRTY-SIX SHORT EXPERIMENTAL SECTIONS OF FLEXIBLE PAVEMENT WERE CONSTRUCTED ON HIGHWAY 10, NORTH OF BRAMPTON, TO COMPARE FIVE TYPES OF BASE MATERIALS LAID IN FOUR THICKNESSES, ON THREE THICKNESSES OF SUBBASE. THE BASE MATERIALS ARE ASPHALT CONCRETE, CRUSHED STONE, CRUSHED GRAVEL, EMULSION STABILIZED SAND, AND CEMENT TREATED SAND. MEASUREMENTS OF BENKELMAN BEAM REBOUND, RUT DEPTHS, LONGITUDINAL AND TRANSVERSE PROFILE, FROST DEPTH PENETRATION AND FROST HEAVE, HAVE BEEN MADE PERIODICALLY. A SUMMARY OF THE RESULTS FROM 1965 TO 1969 IS REPORTED. ANALYSIS OF PEAK ANNUAL DEFLECTION HAS YIELDED LAYER EQUIVALENCY FACTORS AND DEFLECTION/THICKNESS RELATIONSHIPS AND ALTHOUGH THESE CHANGE FROM YEAR TO YEAR, THEY ARE VALUABLE INDICATORS OF PERFORMANCE. OBSERVATIONS OF FROST PENETRATION AND FROST HEAVE ARE PRESENTED AND THEIR EFFECT ON THE BEHAVIOR OF THE DIFFERENT MATERIALS IS DISCUSSED. THE PERFORMANCE OF THE PAVEMENT SECTIONS IS DESCRIBED IN TERMS OF RUTTING, CRACKING AND PATCHING, AND ROUGHNESS OF RIDE. THE BEHAVIOUR OF MATERIALS IN RUTTING IS DISCUSSED AND SOME ANOMALOUS BEHAVIOUR IS REPORTED. THE DEGREE AND EXTENT OF CRACKING AND PATCHING ARE DESCRIBED AND COMPARISONS OF PAVEMENT ROUGHNESS ARE MADE IN TERMS OF PAVEMENT PERFORMANCE RATINGS. /CGRA/

• Supplemental Notes:
  • Rr 153, 26 PP, 10 FIG, 3 TAB, 12 REF, 2 APP
• Corporate Authors:

  Ontario Department of Highways

  1201 Wilson Avenue
  Toronto, Ontario M3M 1J8,   Canada 
• Authors:
  • Phang, W A
• Publication Date: 1969-10

Subject/Index Terms

• TRT Terms: Asphalt concrete; Base course (Pavements); Behavior; Benkelman beam; Cement treated soils; Cracking; Crushed rock; Deflection; Emulsions; Frost; Frost heaving; Gravel; Patching; Pavement performance; Ruts (Pavements); Sand; Soil stabilization; Thickness
• Uncontrolled Terms: Cement treated bases; Crushed gravel; Frost penetration; Profiles; Rut
• Old TRIS Terms: Frost heave; Sand stabilization
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00206588
• Record Type: Publication
• Source Agency: Roads & Transportation Assoc /Canada
• Files: TRIS
• Created Date: Nov 23 1970 12:00AM