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dc.contributor.authorKirkpatrick, Trevor Joeen_US
dc.date.accessioned2014-03-14T20:41:37Z
dc.date.available2014-03-14T20:41:37Z
dc.date.issued2001-07-12en_US
dc.identifier.otheretd-07192001-114248en_US
dc.identifier.urihttp://hdl.handle.net/10919/34056
dc.description.abstractA model to determine the time to first repair and subsequent rehabilitation of concrete bridge decks exposed to chloride deicer salts that recognizes and incorporates the statistical nature of factors affecting the corrosion process is developed. The model expands on an existing deterministic model using statistical computing techniques, including resampling techniques such as the parametric and simple bootstrap. Emphasis was placed on the diffusion portion of the diffusion-cracking model, but advances can be readily included for the time for corrosion deterioration after corrosion initiation. Data collected from ten bridge decks built in Virginia between 1981 and 1994 was used to model the surface chloride concentration, apparent diffusion coefficient, and clear cover depth. Several ranges of the chloride corrosion initiation concentration, as determined from the available literature, were investigated. The time to first repair and subsequent rehabilitation predicted by the stochastic model is shorter than the time to first repair and subsequent rehabilitation predicted by the deterministic model, but is believed to more accurately reflect the true nature of bridge deck deterioration. The model was validated using historical service life data for 129 bridge decks built in Virginia between 1968 and 1972. The time to rehabilitation predicted for the set of bridge decks built between 1981 and 1994 by the stochastic model was approximately 13 years longer than the normalized time to rehabilitation projected for the bridge decks built between 1968 and 1972 using historical data. The increase in time to rehabilitation for the newer set of bridge decks was attributed to a reduction in the specified maximum water/cement ratio and increase in clear cover depth.en_US
dc.publisherVirginia Techen_US
dc.relation.hasparttjkthesis.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectchlorideen_US
dc.subjectcorrosionen_US
dc.subjectconcreteen_US
dc.subjectservice lifeen_US
dc.subjectbridge decksen_US
dc.subjectmonte carloen_US
dc.titleImpact of Specification Changes on Chloride Induced Corrosion Service Life of Virginia Bridge Decksen_US
dc.typeThesisen_US
dc.contributor.departmentCivil Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineCivil Engineeringen_US
dc.contributor.committeememberSprinkel, Michael M.en_US
dc.contributor.committeememberRoberts-Wollmann, Carin L.en_US
dc.contributor.committeememberCousins, Thomas E.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07192001-114248/en_US
dc.contributor.committeecochairAnderson-Cook, Christine M.en_US
dc.contributor.committeecochairWeyers, Richard E.en_US
dc.date.sdate2001-07-19en_US
dc.date.rdate2002-08-01
dc.date.adate2001-08-01en_US


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