A SUB-SYSTEM TO PREDICT TRAFFIC RELATED PERFORMANCE FOR FLEXIBLE PAVEMENTS. (A SYNTHESIS OF AVAILABLE ANALYSIS TECHNIQUES AND NON-DESTRUCTIVE TESTING EXPERIENCES)
The purpose of the study was to develop and provide an immediately implementable sub-system to produce the structural input necessary for a rational approach to determining budgetary priorities for maintenance and rehabilitation of conventional flexible pavements (i.e., asphalt concrete over crushed gravel or crushed rock base). Using the traffic model devised by Jung, et al., of Ontario, the sub-system uses structural measurements (deflection test data) gathered with a vibratory non-destructive testing device (Road Rater) to provide a Predicted Relative Remaining Service Life value for comparative purposes between individual pavement sections within a given environmental area. Additional input required includes: Present Serviceability Rating, Terminal Serviceability Rating, and equivalent 18 kip axle load data. A rapid survey sampling technique was developed and empirical confidence limits were determined for various sample sizes. Seventy-four (74) pavement sections, comprising approximately 175 centerline miles, were tested and evaluated. Test date and evaluation results are included. The report also lists the necessary BASIC language data processing programs and user instructions and provides a recommendation for implementation of the sub-system at the State level.
- Sponsored in part by Maryland Dept. of Transportation, Baltimore. Highway Serviceability Study.(PC A09/MF A019
Greenman-Pederson Associates221 Duke of Gloucester Street
Annapolis, MD USA 21401
Washington, DC USA 20590
Brooklandville, MD USA 21022
- Berry, R G
- Publication Date: 1977-1
- Pagination: 188 p.
- TRT Terms: Budgeting; Computer programs; Deflection; Deflection tests; Evaluation; Flexible pavements; Forecasting; High speed photography; Maintenance management; Mathematical models; Nondestructive tests; Pavement maintenance; Pavement performance; Ratings; Sampling; Serviceability; Testing; Vibratory equipment
- Uncontrolled Terms: Models
- Old TRIS Terms: Basic programming language; Vibrators mechanical
- Subject Areas: Design; Finance; Highways; Pavements;
- Accession Number: 00168960
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-MD-R-77-2 Final Rpt.
- Files: NTIS, TRIS, USDOT, STATEDOT
- Created Date: Jan 30 1978 12:00AM