Characterization of Pore Structure and Crack Propagation in Concrete Using X-Ray Computed Tomography

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dc.contributor.advisorAmde, Amde Men_US
dc.contributor.authorHunter, Opio Konataen_US
dc.contributor.departmentCivil Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2005-02-02T06:54:44Z
dc.date.available2005-02-02T06:54:44Z
dc.date.issued2004-12-13en_US
dc.description.abstractThis thesis utilized the method of computed tomography to quantify the pore structure and the development of cracks in concrete specimens due to delayed ettringite formation. The pore structure is responsible for the passage of harmful substances through the concrete matrix, while delayed ettringite formation causes expansion and internal cracking in concrete structures; particularly in prestressed and precast concrete elements. Computed tomography is a relatively new technique that can be utilized to determine the pore structure and crack propagation in concrete specimens within the mm to micrometer range. The experiment was successful in quantifying the pore structure in the specimens. The pore sizes and total porosity of each specimen were determined along with the pore size distribution on diameter and volume. A comparison was then made with the mercury intrusion porosimetry technique. However, the second objective of analyzing internal cracking due to delayed ettringite formation was not met.en_US
dc.format.extent15692676 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/2153
dc.language.isoen_US
dc.subject.pqcontrolledEngineering, Civilen_US
dc.subject.pquncontrolledConcreteen_US
dc.subject.pquncontrolledX-ray Computed Tomographyen_US
dc.subject.pquncontrolledpore sizeen_US
dc.subject.pquncontrolleddelayed ettringite formationen_US
dc.subject.pquncontrolledporosityen_US
dc.subject.pquncontrolledcrackingen_US
dc.titleCharacterization of Pore Structure and Crack Propagation in Concrete Using X-Ray Computed Tomographyen_US
dc.typeThesisen_US

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