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Title: DEVELOPMENT OF A DISTRESS INDEX AND REHABILITATION CRITERIA FOR CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS USING DISCRIMINANT ANALYSIS
Accession Number: 00468578
Record Type: Component
Availability: Find a library where document is available Abstract: Discriminant analysis is applied to developing the distress index and rehabilitation criteria of the network-level pavement management system for continuously reinforced concrete pavements in Texas. The results are intended to provide the Texas State Department of Highways and Public Transportation with guidelines for evaluating the present pavement conditions and for scheduling rehabilitation. For the discriminant analysis, historical condition survey data were evaluated and separated into two groups, overlaid and nonoverlaid pavements, for which detailed descriptions were given. Each set of data comprised several distress manifestations. A discriminant equation was derived from the analysis that linearly combined the distress manifestations and forced the calculated scores Z" of the two pavement groups to be as statistically different as possible. The relative magnitudes of Z" could then be used as a distress index. Several modifications were made in the derivation of the discriminant equation in order to minimize the overlapping area of the distribution of the Z" scores of the two groups. For the final equation developed, the Z" scores ranged from -1.8 to 1.0, with zero as the criterion for rehabilitation. Thus, a pavement would be classified as a candidate to be overlaid if its distress index was less than zero. With these results, there was a 92.6 percent confidence that any pavement section would be assigned to the group it actually belonged to. Although some unrealistic assumptions were made in this study, the prediction results obtained were encouraging. It is believed that this approach is a further step in the evaluation of pavement distress condition.
Supplemental Notes: Publication of this paper sponsored by Committee on Pavement Rehabilitation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 00600551
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Chou, Chia-PeiMcCullough, B FrankPagination: pp 76-82
Publication Date: 1987
Serial: ISBN: 0-309-04470-7
Media Type: Print
Features: Figures
(5)
; Maps
(1)
; References
(10)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Design; Highways; Maintenance and Preservation; Pavements; Planning and Forecasting; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I61: Equipment and Maintenance Methods
Files: TRIS, TRB
Created Date: May 31 1988 12:00AM
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