Dynamic test deflections were duplicated by elastic theory by using the Chevron N-layered computer program. Dynamic surface deflections obtained by using the road rater were used in conjunction with elastic theory to analyze pavement behavior. A procedure was developed to use field-measured road rater deflections for the estimation of the elastic modulus of the foundation material and the determination of the equivalent thicknesses of new material that approximate the behavior of the structure. The estimated moduli and the equivalent thicknesses can be used as inputs to design overlay thicknesses. An analysis of the deflections of the first three sensors of the road rater also makes it possible to distinguish weaknesses in asphalt concrete layers from weaknesses in the supporting foundation. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 34-46
  • Monograph Title: Pavement evaluation and overlay design: a symposium and related papers
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00301084
  • Record Type: Publication
  • ISBN: 0309028485
  • Files: TRIS, TRB
  • Created Date: Nov 27 1979 12:00AM