EARLY EVALUATION OF LONG-TERM PAVEMENT PERFORMANCE SPECIFIC PAVEMENT STUDIES-2, COLORADO

The Long-Term Pavement Performance (LTPP) Program included the construction of rigid pavement sections for evaluation. These test sections, designated Specific Pavement Studies (SPS)-2, were constructed on the basis of an experiment matrix that includes pavement slab thickness [202 mm (8 in.) and 280 mm (11 in.)], base type (permeable asphalt-treated base, lean concrete base, and dense-graded aggregate base), widened lane of 4.27 m (14 ft) and state standard lane of 3.66 m (12 ft), and drainage (with and without pavement edge drains). In addition, a standard Colorado Department of Transportation design section was constructed to provide a performance comparison. The performance of these test sections after 4 years of service is discussed. The results are based on deflection, profile, and distress data collected by the LTPP Program. Virtually no distress and no change in ride quality are evident in these pavement test sections at this time. However, the evaluation of deflection data provides an early indication of anticipated variation in test section performance. Currently, no difference can be identified between the deflection magnitude of the widened-lane section and the state standard section with tied concrete shoulders. However, both these sections exhibit lower deflections at this time than those sections with untied shoulders. High deflections of 202-mm sections indicate that perhaps these sections do not provide adequate structural strength for this roadway.

• Record URL:
  https://doi.org/10.3141/1699-22
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=EARLY+EVALUATION+OF+LONG-TERM+PAVEMENT+PERFORMANCE+SPECIFIC+PAVEMENT+STUDIES-2%2c+COLORADO&author=N.+Suthahar&author=A.+Ardani&author=D.+Morian&publication_year=2000
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309066778
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1699, Pavement Management and Monitoring.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Suthahar, N
  • Ardani, A
  • Morian, D A
• Publication Date: 2000

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 150-171
• Serial:
  • Transportation Research Record
  • Issue Number: 1699
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Base course (Pavements); Deflection; Edge drains; Pavement distress; Pavement performance; Ride quality; Rigid pavements; Test sections; Thickness; Traffic lanes; Width
• Identifier Terms: Long-Term Pavement Performance Program
• Uncontrolled Terms: Pavement profile
• Geographic Terms: Colorado
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00798889
• Record Type: Publication
• ISBN: 0309066778
• Files: TRIS, TRB, ATRI
• Created Date: Sep 8 2000 12:00AM