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Title: STEEL FIBER-REINFORCED CONCRETE BRIDGE DECK OVERLAYS: EXPERIMENTAL USE BY OHIO DEPARTMENT OF TRANSPORTATION
Accession Number: 00637713
Record Type: Component
Availability: Find a library where document is available Abstract: To extend the service life of Interstate bridge decks, the Ohio Department of Transportation, District 4, is conducting controlled material evaluation "demonstration" projects for the unbiased analysis of steel fiber-reinforced microsilica-modified concrete (SFR-MSC) and steel fiber-reinforced superplasticized dense concrete (SFR-SDC) as potential thin bonded overlay material candidates. Both SFR-MSC and SFR-SDC effectively combine the beneficial attributes of several modern concrete admixtures to transform the brittle matrix of a conventional nonfibrous portland cement concrete (PCC) mix into a more isotropic ductile composite. In specific, the microsilica admixture contributes a more complete densification of the matrix to create greater impermeability levels and increased compression strength, whereas the addition of quality randomly dispersed steel fibers will significantly increase the impact resistance, ultimate flexural strength, postcrack load-carrying capacity, and spall resistance without any detrimental reduction in site placement workability. The steel fiber inclusions are provided to minimize the initial formation and progressive propagation of drying shrinkage cracks and microcracks in the MSC that could otherwise compromise the ability of the densified PCC bridge deck overlay to impede the ingress of deicing salt solutions. From April 30 through July 22, 1992, 14 distinct bridge deck overlays were cast-in-place on U.S. Route 30 near Canton, Ohio: three SFR-MSC test decks, three nonfibrous MSC control decks, four SFR-SDC test decks, and four nonfibrous SDC control decks. Program objectives, mix design proportions, material cost comparisons versus latex-modified concrete, field placement experiences, and postconstruction comments are examined.
Supplemental Notes: This paper appears in Transportation Research Record No. 1392, Maintenance of Roadway Pavement and Structures. 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 #: 01403227
Language: English
Authors: Baun, Mark DouglasPagination: p. 73-78
Publication Date: 1993
Serial: ISBN: 0309054648
Features: Figures
(2)
; References
(12)
; Tables
(1)
TRT Terms:
Alternatives analysis; Bridge decks; Compressive strength; Concrete; Concrete overlays; Costs; Crashworthiness; Demonstration projects; Fiber reinforced concrete; Field studies; Flexural strength; Load limits; Materials selection; Mix design; Overlays (Pavements); Permeability; Silica fume; Steel fibers; Superplasticizers; Workability
Uncontrolled Terms: Old TRIS Terms: Subject Areas: Bridges and other structures; Design; Finance; Highways; I24: Design of Bridges and Retaining Walls
Files: TRIS, TRB, ATRI
Created Date: Oct 1 1993 12:00AM
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