VALIDATION OF THE EXISTING DEFLECTION AND PERFORMANCE RELATIONSHIP FOR USE ON LIGHTLY TRAFFICKED ROADS

The existing flexible pavement evaluation and overlay design method (1) is based upon deflection and performance relationships built up over a number of years from investigations into the behaviour of full scale pavement design experiments. This paper describes an investigation aimed at validating the deflection and performance relationship for use on lightly trafficked roads. Observations were conducted on lengths of existing underdesigned road that had been in service for many years. Details are given of the methods used to record maximum deflection and the visual condition of the pavement's surface. The use of a portable weighbridge to determine damage factors is also described. Full deflection histories were not developed for each site. Instead a new methodology was derived to express the deflection and performance relationships for each particular site as a slice in time from their complete deflection histories. Validation of the existing evaluation and overlay design method for use on lightly trafficked roads is of particular importance because of the large proportion of a county's highway network that falls into the lightly trafficked category. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0860501124
• Supplemental Notes:
  • This paper was presented during Seminar H, Highway Construction and Maintenance at PTRC's 11th Annual Summer Meeting, Sussex University, England, 4-7 July 1983.
• Corporate Authors:

  PTRC Education and Research Services Limited

  110 Strand
  London WC2,   England 
• Authors:
  • BUTLER, I C
  • KENNEDY, C K
• Conference:
  • Planning & Transport Res & Comp, Sum Ann Mtg, Proc
• Publication Date: 1983

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 119-130

Subject/Index Terms

• TRT Terms: Bearing capacity; Conferences; Correlation analysis; Deflection; Flexible pavements; Loss and damage; Low volume roads; Measuring instruments; Pavement design; Pavement overlays; Pavement performance; Pavements; Secondary roads; Strength of materials; Structural strengthening; Surfacing; Traffic flow; Validation
• Uncontrolled Terms: Site investigation
• Old TRIS Terms: Pavement deflection
• ITRD Terms: 6155: Apparatus (measuring); 3085: Bearing capacity; 8525: Conference; 1614: Damage; 5586: Deflection; 2944: Flexible pavement; 3055: Pavement design; 2773: Secondary road; 5544: Strength (mater); 3096: Strengthening (pavement); 2972: Surfacing; 671: Traffic flow
• Subject Areas: Data and Information Technology; Design; Highways; Maintenance and Preservation; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00382655
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-86050-112-4
• Report/Paper Numbers: Volume P240
• Files: ITRD, TRIS
• Created Date: May 30 1984 12:00AM