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Title:

EFFECT OF CONCRETE OVERLAY DEBONDING ON PAVEMENT PERFORMANCE (DISCUSSION AND CLOSURE)

Accession Number:

00469598

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309045169

Abstract:

The objectives of this paper were to determine the effect of bond loss on response and performance of bonded concrete overlays and to examine present bonding techniques and bond loss detection methodologies. A finite-element model called ILLI-SLAB was used to evaluate pavement response to load, and Westergaard-Bradbury equations were used to determine curling stresses. It was found that loss of bond adversely affects maximum pavement tensile stress (thus fatigue life) and maximum pavement deflections. It is also believed that curling stresses may cause unbonded thin overlays to separate from the underlying slab, causing extremely high stress in the overlay if a load is applied. The only way bond can be obtained is to follow good construction techniques. A summary of these techniques is presented in the paper. On the basis of the deflection analysis it was concluded that it may be possible to detect bond loss using nondestructive testing of corner deflections.

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:

Pavement design

Monograph Accession #:

01418141

Authors:

Van Dam, Thomas
Blackmon, Eleanor
Shahin, M Y

Discussers:

Korovesis, George T; Ioannides, Anastasios M

Pagination:

pp 119-132

Publication Date:

1987

Serial:

Transportation Research Record

Issue Number: 1136
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309045169

Media Type:

Print

Features:

Figures (12) ; References (23) ; Tables (10)

Uncontrolled Terms:

Fatigue life; Tensile stress

Old TRIS Terms:

Subject Areas:

Construction; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

Files:

TRIS, TRB

Created Date:

Jul 31 1988 12:00AM

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