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Title:

CONCRETE OVERLAYS FOR BRIDGE DECK REPAIR

Accession Number:

00043908

Record Type:

Component

Abstract:

Tests were made on portland cement and resinous concrete overlays to determine their suitability as overlays for deteriorated concrete bridge decks. Direct shear strengths of overlays bonded with epoxy, portland cement grout, and latex-modified cement grout were compared with those applied with no bonding agent. Freeze-thaw tests were made to determine durability of bonding agents and of overlay concretes. Load tests were made on 8-ft. span beams to determine the stiffening effect of overlays and the effect of repeated loadings on overlaid beams. Durability was studied further by gradually lowering laboratory temperature to 20 F during periods of repeated load applications. Low frequency and low amplitude vibrations were maintained on one beam by cyclic loading during placement and cure of a 1-1/2-in. overlay to simulate vibration due to traffic on a lane adjacent to the one being overlaid. Shear bond strengths ranged from 214 to 668 psi. Epoxy and portland cement grout bonding agents withstood the ASTM C 290 test without failure. Two of three overlays of latex-modified cement concrete came unbonded during the ASTM C 290 test. Latex-modified cement concrete overlay provided better freeze-thaw scale resistance than did other materials. No overlay failed in any way, except for tension cracks, in 2 million cycles of load.

Supplemental Notes:

Sponsored by Committee on Structures Maintenance. 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 Accession #:

01410319

Report/Paper Numbers:

ISBN 0-309-02072-7

Authors:

Furr, Howard
Ingram, Leonard

Pagination:

pp 93-104

Publication Date:

1972

Serial:

Highway Research Record

Issue Number: 400
Publisher: Highway Research Board

Conference:

51st Annual Meeting of the Highway Research Board

Location: Washington District of Columbia, United States
Date: 1972-1-17 to 1972-1-21

Media Type:

Digital/other

Features:

Figures (4) ; References (12) ; Tables (6)

Uncontrolled Terms:

Bridge maintenance; Repairs

Old TRIS Terms:

Subject Areas:

Bridges and other structures; Highways; Maintenance and Preservation

Files:

TRIS, TRB

Created Date:

Jun 1 1973 12:00AM

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