Improving concrete performance through the use of blast furnace slag (FHWA-OK-00-01) 2136

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dc.contributor.sponsorOklahoma Department of Transportation. Materials and Research Division. Office of Research & Implementation
dc.creatorBush, Thomas D. Jr.
dc.creatorBruce, Russell W.
dc.creatorZaman, Musharraf M.
dc.creatorHale, Micah W.
dc.creatorLing, Tieng A.
dc.date.accessioned2018-06-29T22:06:21Z
dc.date.available2018-06-29T22:06:21Z
dc.date.issued2000-8
dc.description.abstractA laboratory testing program was undertaken to evaluate the performance of ODOT Class AA and Class A concretes, specifically containing Oklahoma cements and aggregates, and utilizing partial replacement of portland cement (PC) with Grade 12 0 ground granulated blast furnace slag (BFS) and/or Class C fly ash (FA). Studies were conducted to examine performance aspects related to constituent materials (types and amounts used) as well as to construction/field issues. Blast furnace slag was used to replace portland cement on a 1: 1 basis by mass. Class C fly ash replaced portland cement at a 1.35:1 ratio, i.e., 1.35 lb. of fly ash replaced 1.0 lb. ofportland cement. Replacements rates examined were: none (control), 2 5 percent BFS, 15 percent FA, and the combination of2 5 percent BFS plus 15 percent FA. The primary variables examined were: 1) BFS and FA contents, 2 ) source of Type I cement, 3) mixing and curing temperature, and 4) concrete class (A and AA). Use of high range water reducers and treatment with silanes were also examined. As compared to control portland cement concrete, the use of Grade 12 0 BFS at the replacement rate tested had the following beneficial effects: 1) increased compressive, flexural, and tensile strengths (typically by 7 days for compressive strength), 2 ) substantially lower permeability (greatly reduced RCIP values and chloride ion absorption in the upper half inch depth), 3) reduced creep, and similar or slightly higher elastic modulus, and 4) consistent nature of performance. Blast furnace slag replacement (Grade 120) was also found to cause slight reductions in workability, and reduced effectiveness in entraining air when workability was decreased, or with low or elevated casting temperature. Setting times, freez.e thaw resistance, shrinkage, and chloride ion absorption when treated by silane, were found similar for concrete with blast furnace slag when compared to concrete made with ordinary portland cement.
dc.description.peerreviewNo
dc.description.versionFinal Report August 1997-July 2000
dc.format.extent133 pages
dc.format.extent24,648,022 bytes
dc.format.mediumapplication.pdf
dc.identifier.govdocFHWA-OK-00(01)
dc.identifier.otherOklahoma Department of Transportation State Planning and Research item number 2136
dc.identifier.urihttps://hdl.handle.net/11244/300392
dc.languageen_US
dc.relation.ispartofseriesNo
dc.relation.requiresAdobe Acrobat Reader
dc.subject.keywordsPozzolans
dc.subject.keywordsblast furnace slag
dc.subject.keywordsfly ash
dc.subject.keywordsdurability
dc.titleImproving concrete performance through the use of blast furnace slag (FHWA-OK-00-01) 2136
dc.typeTechnical Report
dc.type.materialtext

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