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Title: MECHANISTIC DESIGN CONSIDERATIONS FOR PUNCHOUT DISTRESS IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENT
Accession Number: 00607722
Record Type: Component
Availability: Find a library where document is available Abstract: A study was undertaken at the University of Illinois to develop a mechanistic design approach for continuously reinforced concrete (CRC) pavements to account for punchout distress. A mechanism relating to the loss of load transfer and the progressive development of punchout-related distress is presented. Analysis procedures, demonstrated to implement the mechanism as a rationally based thickness design procedure for CRC pavement, suggest that the optimal crack interval is between 3 and 4 ft. Present CRC design methodologies focus on limiting to certain design criteria cracking intervals, crack width, and stress in the reinforcements. Load transfer mechanisms have not been considered in the limiting design criteria and consequently are not included in these design procedures. These methods attempted to determine the design pavement thickness based on the combined effects of environmental and load-related stress on the final crack spacing, which must be limited to the design cracking criteria. However, past experience has indicated that a certain percentage of crack spacing usually falls below the specified minimum crack interval. These data suggest a greater tendency for punchouts to develop within this lower range of crack spacing. How pavement thickness, percent reinforcement, and crack spacing may be considered with respect to pavement spalling and loss of load transfer in the process of punchout development are outlined.
Supplemental Notes: This paper appears in Transportation Research Record No. 1286, Design and Evaluation of Rigid and Flexible Pavements 1990. 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 #: 01411074
Authors: Zollinger, Dan GBarenberg, Ernest JPagination: p. 25-37
Publication Date: 1990
Serial: ISBN: 0309050707
Features: Figures
(19)
; References
(22)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Design; Environment; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Apr 30 1991 12:00AM
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