Backcalculation: an overview and perspective

The origins of backcalculation, including the development of equipment for deflection testing and computer programs used for deflection analysis, are reviewed. Methods and philosophies that are the basis for backcalculation are discussed. The "practical realities" of real pavements, such as bedrock, shallow water table, and stress-dependent materials, and the difficulties these pose for backcalculation are examined in detail. The importance of establishing a valid model of the pavement for backcalculation is emphasized. The effect of measurement errors, spatial and seasonal variation, and means of assessing the plausibility of the backcalculation results are discussed.

• Authors:
  • Irwin, L H
• Conference:
  • Pavement Evaluation Conference, 2002, Roanoke, Virginia, USA
• Publication Date: 2002

Language

• English

Media Info

• Pagination: 22p
• Monograph Title: Comparison of non-destructive testing devices to determine in situ properties of asphalt concrete pavement layers

Subject/Index Terms

• TRT Terms: Backcalculation; Deflection; Mathematical models; Pavements; Test procedures; Tests for suitability, service and quality
• ATRI Terms: Back calculation; Deflection; Modelling; Pavement evaluation; Pavement testing; Test method
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01443206
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Aug 25 2012 1:10AM