PAVEMENT EVALUATION USING ROAD RATER DEFLECTIONS
Dynamic test deflections have been duplicated by elastic theory using the Chevron N-layered computer program. Dynamic surface deflections obtained using the Road Rater have been used in conjunction with elastic theory to analyze pavement behavior. A procedure has been developed to use field measured Road Rater deflections to estimate the elastic moduli of the foundation material and to determine the equivalent thicknesses of new material which approximate the behavior of the structure. The estimated moduli and (or) equivalent thicknesses may 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 asphaltic concrete layers from weaknesses in the supporting foundation.
- Record URL:
Frankfort, KY United States 40601
Washington, DC United States 20590
- Sharpe, G W
- Southgate, H F
- Deen, R C
- Publication Date: 1978-8
- Pagination: 249 p.
- TRT Terms: Asphalt concrete; Base course (Pavements); Computer programs; Deflection; Elasticity (Mechanics); Evaluation; Field tests; Flexible pavements; Foundations; Graphs; Modulus of elasticity; Nondestructive tests; Overlays (Pavements); Pavement performance; Pavements; Thickness
- Uncontrolled Terms: Pavement thickness
- Geographic Terms: Kentucky
- Old TRIS Terms: Elastic theory; Graphs charts; Pavement deflection
- Subject Areas: Highways; Pavements;
- Accession Number: 00191713
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: RR-501 Intrm Rpt.
- Files: NTIS, TRIS, USDOT, STATEDOT
- Created Date: Jun 30 1979 12:00AM