THE PERFORMANCE OF FULL SCALE BASE AND SURFACING EXPERIMENTS ON NATIONAL ROUTE 3-1, AT KEY RIDGE AFTER THE FIRST SIX YEARS

A FULL-SCALE ROAD EXPERIMENT CONSTRUCTED SIX YEARS AGO AND CONTAINING 31 DIFFERENT COMBINATIONS OF BASES AND SURFACINGS HAS BEEN INSPECTED EVERY SIX MONTHS. MEASUREMENTS OF DEFLECTION AND CURVATURE HAVE ALSO BEEN RECORDED AT SIX-MONTHLY INTERVALS. DETAILS OF PERFORMANCE REVEAL THAT IN SOME TEST SECTIONS UNBALANCED DESIGN IN ONE ELEMENT, SUCH AS A STIFF CEMENT-STABILIZED BASE IN THE ROAD STRUCTURE, HAS CAUSED DISTRESS OF THE WHOLE. A SOLUTION TO THE ORIGINAL PROBLEM OF FLEXURE CRACKING APPEARS TO BE THE USE OF BITUMINOUS OVERLAYS. A CONVINCING FINDING WAS THE SUPERIOR PERFORMANCE OF BS 594-TYPE ROLLED ASPHALT OVER A DENSE GRADED ASPHALT CONCRETE THIN SURFACING. /RRL(A)/

• Supplemental Notes:
  • 13 Pp, 4 FiG, 3 TAB, 4 PHOT, 6 REF
• Corporate Authors:

  Conf Asphalt Pavements Proc /S Africa

  ,    
• Authors:
  • Williams, A A
  • Dehlen, G L
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Base course (Pavements); Bituminous overlays; Curvature; Deflection; Flexure; Fracture mechanics; Pavement performance; Rolled asphalt; Surfacing
• Uncontrolled Terms: Base
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00206891
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Jul 18 1971 12:00AM