FAILURE CRITERIA FOR FLEXIBLE PAVEMENTS

THIS PAPER DISCUSSES THE DEFINITION OF THE FAILURE CONDITION WHICH HAS BEEN ACCEPTED FOR FLEXIBLE PAVEMENTS IN BRITAIN. THE CRITICAL CONDITION, AT WHICH OVERLAYING TO EXTEND THE LIFE OF THE PAVEMENT SHOULD BE CARRIED OUT, IS ALSO CONSIDERED. BOTH THESE PERFORMANCE CRITERIA HAVE, FOR FLEXIBLE PAVEMENTS, BEEN EXPRESSED IN TERMS OF PERMANENT DEFORMATION EITHER AS A RUT-DEPTH OR AS TOTAL DEFORMATION FROM THE ORIGINAL PAVEMENT LEVEL. OBSERVATIONS MADE ON NORMAL IN-SERVICE ROADS AND ON CLOSELY OBSERVED EXPERIMENTAL ROADS HAVE SHOWN THAT THE CRITERIA ARE NOT MARKEDLY DIFFERENT FOR PAVEMENTS USING LEAN CONCRETE, BITUMINOUS MACADEAM OR UNBOUND STONE BASES. THE PESENT SERVICEABILITY INDEX CONCEPT IS NOT REGARDED IN BRITAIN AS VERY APPLICABLE TO THE STRUCTURAL DESIGN PROBLEM BECAUSE OF ITS HEAVY DEPENDENCE ON RIDING QUALITY FACTORS, NOT NECESSARILY ASSOCIATED WITH TRAFFIC STRESSES. HOWEVER, AN APPROXIMATE CORRELATION BETWEEN THE BRITISH APPROACH AND P. S. I. VALUES IS GIVEN. /AUTHOR/

• Authors:
  • Croney, D
• Conference:
  • Intl Conf Struct Design Asphalt Pvmts
• Publication Date: 1972-9

Media Info

• Features: Figures; References;
• Pagination: 5 p.
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Defects; Failure; Flexible pavements; Overlays (Pavements); Pavement distress; Pavement performance; Pavements
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00206055
• Record Type: Publication
• Files: TRIS
• Created Date: May 7 1973 12:00AM