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- W3443440 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." @default.
- W3443440 created "2016-06-24" @default.
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- W3443440 date "1993-01-01" @default.
- W3443440 modified "2023-09-23" @default.
- W3443440 title "STEEL FIBER-REINFORCED CONCRETE BRIDGE DECK OVERLAYS: EXPERIMENTAL USE BY OHIO DEPARTMENT OF TRANSPORTATION" @default.
- W3443440 hasPublicationYear "1993" @default.
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