Laboratory testing and investigations of delayed ettringite formation

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dc.contributor.advisorFolliard, Kevin J.
dc.creatorDrimalas, Thanos, 1980-
dc.date.accessioned2019-07-25T22:48:38Z
dc.date.available2019-07-25T22:48:38Z
dc.date.issued2004-12-18
dc.description.abstractDelayed ettringite formation (DEF) in concrete structures has recently damaged structures in the state of Texas, which has caused the state to investigate this new type of premature concrete deterioration. The research described in this thesis is part of a comprehensive research project, TxDOT Project 4085. The work described in this thesis focuses primarily on DEF, but also investigates the interplay between DEF and alkali-silica reaction. Significant accelerated laboratory testing was performed, and parallel exposure blocks were cast to evaluate realistic exposure conditions. The research included materials from throughout the state of Texas. The effects of material composition and dosage on DEF were investigated, and several mitigation measures were identified that can prevent DEF-induced expansion, even when concrete is heated above 70 °C. The key findings from this research have been implemented by TxDOT in new state specifications to prevent DEF in prestressed concrete elements.en_US
dc.description.departmentCivil, Architectural, and Environmental Engineeringen_US
dc.format.mediumelectronicen_US
dc.identifier.urihttps://hdl.handle.net/2152/75318
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/2423
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.rights.restrictionRestricteden_US
dc.subject.lcshConcrete--Deteriorationen_US
dc.subject.lcshConcrete--Testingen_US
dc.subject.lcshMortar--Deteriorationen_US
dc.subject.lcshMortar--Testingen_US
dc.subject.lcshEttringite--Texasen_US
dc.subject.lcshAlkali-aggregate reactionsen_US
dc.titleLaboratory testing and investigations of delayed ettringite formationen_US
dc.typeThesisen_US
dc.type.genreThesisen_US
thesis.degree.departmentCivil, Architectural, and Environmental Engineeringen_US
thesis.degree.disciplineCivil Engineeringen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Science in Engineeringen_US

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