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Title: EARLY EVALUATION OF LONG-TERM PAVEMENT PERFORMANCE SPECIFIC PAVEMENT STUDIES-2, COLORADO
Accession Number: 00798889
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: 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.
Supplemental Notes: This paper appears in Transportation Research Record No. 1699, Pavement Management and Monitoring.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Suthahar, NArdani, AMorian, D APagination: p. 150-171
Publication Date: 2000
Serial: ISBN: 0309066778
Features: Figures
(10)
; References
(2)
; Tables
(3)
TRT Terms: Identifier Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Sep 8 2000 12:00AM
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