Performance Evaluation of Epoxy-Coated Reinforcing Steel and Corrosion Inhibitors in a Simulated Concrete Pore Water Solution

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dc.contributor.authorPyc, Wioleta A.en
dc.contributor.committeechairWeyers, Richard E.en
dc.contributor.committeememberWightman, James P.en
dc.contributor.committeememberDillard, John G.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T20:51:07Zen
dc.date.adate1998-02-14en
dc.date.available2014-03-14T20:51:07Zen
dc.date.issued1998-02-14en
dc.date.rdate1998-02-14en
dc.date.sdate1998-07-21en
dc.description.abstractThree epoxy-coated reinforcing steel (ECR) types removed from job sites, one shipped directly from the coater's plant, three commercial corrosion inhibitors, and one ECR plus a corrosion inhibitor were evaluated as reinforcing steel corrosion protection systems against chloride induced corrosion. The three corrosion inhibitors were calcium nitrite, an aqueous mixture of esters and amines, and a mixture of alcohol and amine. The ECR was tested in two groups, 0% and 1% coating damage. Corrosion protection performance was evaluated by the amount of visually observed blister surface area, for the ECR, and corroded surface area, for the tested corrosion inhibitors. Results of the ECR testing demonstrated that coating debondment and corrosion of ECR is directly related to the amount of damage present in the coating, as well as coating thickness. For the bare steel tested with and without corrosion inhibitors, the results showed that corrosion increases with increasing chloride concentrations. Corrosion inhibition characteristics were demonstrated only by the calcium nitrite corrosion inhibitor. A corrosion protection evaluation test was developed for concrete corrosion inhibitor admixtures. The test solution is a simulated concrete pore water. Corrosion is accelerated by evaluating the temperature to field conditions of 40 C. The test consists of a 7 day pretreatment period followed by a 90 day test period. The corrosive sodium chloride is added to the solution containing the bare or epoxy-coated reinforcing steel specimens after the 7 day pretreatment period. In addition, the solution is periodically saturated with oxygen.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-243012282975860en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-243012282975860/en
dc.identifier.urihttp://hdl.handle.net/10919/36569en
dc.publisherVirginia Techen
dc.relation.haspartetd.pdfen
dc.relation.haspartWpthesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectblister formationen
dc.subjectcorrosionen
dc.subjectepoxy-coated reinforcing steelen
dc.subjectcorrosion inhibitor admixturesen
dc.subjectconcrete pore solutionen
dc.subjectsolution testingen
dc.titlePerformance Evaluation of Epoxy-Coated Reinforcing Steel and Corrosion Inhibitors in a Simulated Concrete Pore Water Solutionen
dc.typeThesisen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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