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dc.contributor.authorGalitz, Christopher Leeen
dc.date.accessioned2015-10-29T08:00:30Zen
dc.date.available2015-10-29T08:00:30Zen
dc.date.issued2015-10-28en
dc.identifier.othervt_gsexam:6527en
dc.identifier.urihttp://hdl.handle.net/10919/56988en
dc.description.abstractThe viscoelastic behavior of concrete, nearly completely attributable to changes in properties in the cement paste, is an ongoing area of research with the objective of avoiding unpredictable response and potentially failure of concrete structures. This research explores the elastic and viscoelastic response in cement paste beams using relaxation testing, with and without strain reversals in the load history. It was seen that strain reversal imparts significant changes in mechanical response, retarding load relaxation. Companion beams were tested for chemical composition at varying depths in the beam section and the results were compared to those of control specimens not subject to stress. Results indicate significant variations in composition implying that stress accelerates the hydration process. The reasons behind the acceleration are discussed and incorporated into a preliminary solidification-dissolution model for beam relaxation. The model, though in need of improvement through further research, shows promise in potentially predicting relaxation in cement paste and by extension, in concrete structures.en
dc.format.mediumETDen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectcement pasteen
dc.subjectrelaxationen
dc.subjectearly age cementen
dc.subjectviscoelasticityen
dc.subjectAgingen
dc.subjectYoung's modulusen
dc.subjectbeam bendingen
dc.subjectmicro-CTen
dc.subjectX-ray diffractionen
dc.subjectthermogravimetric analysisen
dc.titleThe Effects of Early-Age Stress on the Elastic and Viscoelastic Behavior of Cement Pasteen
dc.typeDissertationen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.description.degreePh. D.en
thesis.degree.namePh. D.en
thesis.degree.leveldoctoralen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineCivil Engineeringen
dc.contributor.committeechairRoberts-Wollmann, Carin L.en
dc.contributor.committeechairGrasley, Zacharyen
dc.contributor.committeememberFoster, Earl Johanen
dc.contributor.committeememberCharney, Finley A.en
dc.contributor.committeememberMokarem, David W.en


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