Optimizing Concrete Mix Designs to Produce Cost Effective Paving Mixes (FHWA-OK-08-11 2199)

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dc.contributor.sponsorOklahoma Department of Transportation. Materials and Research Division. Office of Research & Implementation
dc.creatorRamseyer, Chris C.
dc.creatorKiamanesh, Roozbeh
dc.date.accessioned2018-04-20T22:47:15Z
dc.date.available2018-04-20T22:47:15Z
dc.date.issued2009-9
dc.description.abstractThis research is designed to determine the effect of the mechanically activated fly ash on fresh concrete properties and the ultimate strength of the hardened concrete. Six types of fly ash that are locally available in the state of Oklahoma were used in this research. The activation of the fly ash was performed with a modified ball mill to increase the hydration reaction rate of the fly ash particles. Two primary variables were studied in this research; Grinding duration and the percentage of fly ash as a portion of cementitious material. The fly ash was ground for 30 and 120 minutes. The ground fly ash was used as a cementitious material in the concrete in various proportions; 20, 40, and 60% of the weight. The strength of each mix was compared with plain Portland cement concrete and the concrete samples with un-ground fly ash to determine any changes. The results of this study show that the concrete with higher proportions of fly ash has higher workability, although the strength of the samples decreases in most cases if high volume of fly ash is used. However, the results indicate that grinding the fly ash can mechanically active the particles and not only improve the strength of the samples with high proportions of fly ash, but also increase the strength higher than traditional Portland cement concrete.
dc.description.peerreviewNo
dc.description.versionFinal Report, October 2007-October 2008
dc.format.extent122 pages
dc.format.extent1,415,903 bytes
dc.format.mediumapplication.pdf
dc.identifier.govdocFHWA-OK-08-11
dc.identifier.otherOklahoma Department of Transportation State Planning and Research item number 2199
dc.identifier.urihttps://hdl.handle.net/11244/299476
dc.languageen_US
dc.relation.ispartofseriesNo
dc.relation.requiresAdobe Acrobat Reader
dc.relation.urihttp://www.odot.org/hqdiv/p-r-div/spr-rip/library/reports/fhwa-ok0811.pdf
dc.subject.keywordsFly ash
dc.subject.keywordsconcrete
dc.subject.keywordsmechanical activation
dc.subject.keywordspozzolanic
dc.titleOptimizing Concrete Mix Designs to Produce Cost Effective Paving Mixes (FHWA-OK-08-11 2199)
dc.typeTechnical Report
dc.type.materialtext

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