An Evaluation of the Durability of Polymer Concrete Bonds to Aluminum Bridge Decks

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dc.contributor.authorZhang, Huiyingen
dc.contributor.committeechairDillard, David A.en
dc.contributor.committeememberWeyers, Richard E.en
dc.contributor.committeememberDillard, John G.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T20:33:15Zen
dc.date.adate1999-05-04en
dc.date.available2014-03-14T20:33:15Zen
dc.date.issued1999-02-15en
dc.date.rdate2000-05-04en
dc.date.sdate1999-04-07en
dc.description.abstractThe objective of this study is to evaluate the bond durability of an epoxy-based polymer concrete wearing surface bonded to aluminum bridge decks. In the bridge design, an aluminum alloy bridge deck is used with a polymer concrete wearing surface. A modified mixed mode flexure fracture test was developed to assess the bond durability of specimens aged in the following environmental conditionings: 30°C [86°F], 98% RH; 45°C [113°F], 98% RH; 60°C [140°F], 98% RH; freezing and thawing; salt (NaCl) water soak; and 60°C [140°F], dry. The exposure times varied from none to twelve months. The critical strain energy release rate (Gc) of the bond was determined using a compliance technique. In spite of considerable scatter in the data, the results suggested that the interfacial bond toughness had been degraded by exposure conditions. The aging appeared to affect the polymer concrete overlay (silica aggregates/epoxy bond) as well. Fracture analysis and finite element modeling were completed for linear elastic behavior. Analytical and numerical solutions were in reasonably good agreement. Characterization of the bridge components and failure specimens were accomplished using analytical measurements including thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA). Techniques employed in the surface analysis included x-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM).en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-040799-170742en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-040799-170742/en
dc.identifier.urihttp://hdl.handle.net/10919/31655en
dc.publisherVirginia Techen
dc.relation.haspartthesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAluminumen
dc.subjectEpoxyen
dc.subjectStrain energy release rateen
dc.subjectMixed-mode fracture testen
dc.subjectAdhesive bonden
dc.subjectPolymer concrete overlaysen
dc.subjectDurabilityen
dc.titleAn Evaluation of the Durability of Polymer Concrete Bonds to Aluminum Bridge Decksen
dc.typeThesisen
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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