PAVEMENT DEFLECTION AS PAVEMENT OVERLAY CRITERIA (PHASE 1)

DYNAFLECT EQUIPMENT WAS USED TO MEASURE DEFLECTIONS ON 221 MILES OF WASHINGTON HIGHWAYS. IN GENERAL, THREE TYPES OF PAVEMENT STRUCTURE WERE INCLUDED, NAMELY: ASPHALT CONCRETE OVER (1) CEMENT-TREATED BASE; (2) UNTREATED AGGREGATE BASE; AND, (3) UNTREATED ROADBED SOIL. A LITERATURE SEARCH WAS MADE TO OBTAIN BACKGROUND INFORMATION ON THE USE OF THE DYNAFLECT IN OTHER STATES. ACCEPTABILITY OF THE EQUIPMENT WAS ESTABLISHED. STATISTICAL PROBLEMS OF SUBJECTIVE RATINGS AND MAGNITUDE OF DEFLECTIONS ARE DISCUSSED. CONCLUSIONS SHOW THAT THE METHOD DEVELOPED FOR DETERMINING THE NEED FOR RESURFACING IS COMPATIBLE WITH THE PRESENT RATING SYSTEM USED BY THE HIGHWAY DEPARTMENT. /AUTHOR/

• Corporate Authors:

  Washington State University, Pullman

  Transportation Systems Section
  Pullman, WA  United States  99163

  Washington State Department of Highways

  Olympia, WA  United States 

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Cook, J C
  • Kruker, M
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt concrete; Base course (Pavements); Cement treated soils; Deflection; Dynaflect; Overlays (Pavements); Pavements; Ratings; Resurfacing; Reviews; Soils; Subgrade materials
• Uncontrolled Terms: Cement treated bases; Criteria
• Old TRIS Terms: Bases; Dynaflect equipment; Pavement deflection; Roadbed material
• Subject Areas: Geotechnology; Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00206429
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Y-1202
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 7 1971 12:00AM