{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/44331"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/44331","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Structural performance evaluation of the Postrite post-treatment corrosion inhibitor system","abstract":"Nearly 40% of the bridges in the United States are considered deficient and half of the costs needed to repair these bridges is associated with bridge deck deterioration. Chlorides are the primary cause of reinforced concrete deterioration in marine environments and areas of deicing salt usage. The chlorides penetrate the concrete and initiate corrosion of the reinforcing steel. A proven corrosion inhibitor system, the Postrite Post-treatment System, used in reinforced concrete rehabilitation, employs the use of a spray treatment of Postrite (15% calcium nitrite by weight) onto the substrate concrete. The Postrite treatment is followed by a DCI-S (30% calcium nitrite by weight) containing concrete overlay. The structural performance effect of the Postrite post-treatment system used in the resurfaciing of reinforced concrete bridge deck slabs was evaluated in this study. Twelve specimens, two monolithic and ten rehabilitation slabs, were cast. The slabs were tested dynamically for load/deflection analysis. The direct shear and tensile strengths of the overlays were tested and evaluated. Strain gages were used to aid in an overlay to substrate interaction evaluation. The Postrite post-treatment system was determined to have no detrimental effects on the bridge deck slabs performance. The rehabilitation slabs exhibited a smaller deflection than the monolithic under equivalent loadings. The direct shear tests of the overlays exceeded the minimum needed to sustain horizontal shear stresses. The measured direct tensile strengths of the overlays were sufficient to resist delamination which might result from traffic loading or freezing and thawing conditions. The strain gage data indicated that there was partial interaction between the overlay and substrate concretes.","abstract_html":"Nearly 40% of the bridges in the United States are considered deficient and half of the costs needed to repair these bridges is associated with bridge deck deterioration. Chlorides are the primary cause of reinforced concrete deterioration in marine environments and areas of deicing salt usage. The chlorides penetrate the concrete and initiate corrosion of the reinforcing steel. A proven corrosion inhibitor system, the Postrite Post-treatment System, used in reinforced concrete rehabilitation, employs the use of a spray treatment of Postrite (15% calcium nitrite by weight) onto the substrate concrete. The Postrite treatment is followed by a DCI-S (30% calcium nitrite by weight) containing concrete overlay. The structural performance effect of the Postrite post-treatment system used in the resurfaciing of reinforced concrete bridge deck slabs was evaluated in this study. Twelve specimens, two monolithic and ten rehabilitation slabs, were cast. The slabs were tested dynamically for load/deflection analysis. The direct shear and tensile strengths of the overlays were tested and evaluated. Strain gages were used to aid in an overlay to substrate interaction evaluation. The Postrite post-treatment system was determined to have no detrimental effects on the bridge deck slabs performance. The rehabilitation slabs exhibited a smaller deflection than the monolithic under equivalent loadings. The direct shear tests of the overlays exceeded the minimum needed to sustain horizontal shear stresses. The measured direct tensile strengths of the overlays were sufficient to resist delamination which might result from traffic loading or freezing and thawing conditions. The strain gage data indicated that there was partial interaction between the overlay and substrate concretes.","abstract_has_math":false,"creators":["Winkler, Jonathan M."],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Civil Engineering","degree_department":"Civil Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":["Weyers, Richard E."],"committee_members":["Barker, Richard M.","Walker, Richard D."],"year":1996,"date_issued":"1996","date_published":"1996","updated_at":"2026-07-22T22:19:57Z","subjects":[],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-08222008-063213"],"render_values":[{"text":"etd-08222008-063213","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/44331","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Weyers, Richard E."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Barker, Richard M.","Walker, Richard D."]},{"key":"dc:contributor.department","label":"Department","values":["Civil Engineering"]},{"key":"dc:creator","label":"Author","values":["Winkler, Jonathan M."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-03-14T21:43:10Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-03-14T21:43:10Z","2008-08-22"]},{"key":"dc:date.issued","label":"Date","values":["1996"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-08222008-063213"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/44331"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Nearly 40% of the bridges in the United States are considered deficient and half of the costs needed to repair these bridges is associated with bridge deck deterioration. Chlorides are the primary cause of reinforced concrete deterioration in marine environments and areas of deicing salt usage. The chlorides penetrate the concrete and initiate corrosion of the reinforcing steel. A proven corrosion inhibitor system, the Postrite Post-treatment System, used in reinforced concrete rehabilitation, employs the use of a spray treatment of Postrite (15% calcium nitrite by weight) onto the substrate concrete. The Postrite treatment is followed by a DCI-S (30% calcium nitrite by weight) containing concrete overlay. The structural performance effect of the Postrite post-treatment system used in the resurfaciing of reinforced concrete bridge deck slabs was evaluated in this study. Twelve specimens, two monolithic and ten rehabilitation slabs, were cast. The slabs were tested dynamically for load/deflection analysis. The direct shear and tensile strengths of the overlays were tested and evaluated. Strain gages were used to aid in an overlay to substrate interaction evaluation. The Postrite post-treatment system was determined to have no detrimental effects on the bridge deck slabs performance. The rehabilitation slabs exhibited a smaller deflection than the monolithic under equivalent loadings. The direct shear tests of the overlays exceeded the minimum needed to sustain horizontal shear stresses. The measured direct tensile strengths of the overlays were sufficient to resist delamination which might result from traffic loading or freezing and thawing conditions. The strain gage data indicated that there was partial interaction between the overlay and substrate concretes."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["BTD"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Structural performance evaluation of the Postrite post-treatment corrosion inhibitor system"]}]}],"canonical_facts":{"dc:contributor.committeechair":["Weyers, Richard E."],"dc:contributor.committeemember":["Barker, Richard M.","Walker, Richard D."],"dc:contributor.department":["Civil Engineering"],"dc:creator":["Winkler, Jonathan M."],"dc:date.accessioned":["2014-03-14T21:43:10Z"],"dc:date.available":["2014-03-14T21:43:10Z","2008-08-22"],"dc:date.issued":["1996"],"dc:description.abstract":["Nearly 40% of the bridges in the United States are considered deficient and half of the costs needed to repair these bridges is associated with bridge deck deterioration. Chlorides are the primary cause of reinforced concrete deterioration in marine environments and areas of deicing salt usage. The chlorides penetrate the concrete and initiate corrosion of the reinforcing steel. A proven corrosion inhibitor system, the Postrite Post-treatment System, used in reinforced concrete rehabilitation, employs the use of a spray treatment of Postrite (15% calcium nitrite by weight) onto the substrate concrete. The Postrite treatment is followed by a DCI-S (30% calcium nitrite by weight) containing concrete overlay. The structural performance effect of the Postrite post-treatment system used in the resurfaciing of reinforced concrete bridge deck slabs was evaluated in this study. Twelve specimens, two monolithic and ten rehabilitation slabs, were cast. The slabs were tested dynamically for load/deflection analysis. The direct shear and tensile strengths of the overlays were tested and evaluated. Strain gages were used to aid in an overlay to substrate interaction evaluation. The Postrite post-treatment system was determined to have no detrimental effects on the bridge deck slabs performance. The rehabilitation slabs exhibited a smaller deflection than the monolithic under equivalent loadings. The direct shear tests of the overlays exceeded the minimum needed to sustain horizontal shear stresses. The measured direct tensile strengths of the overlays were sufficient to resist delamination which might result from traffic loading or freezing and thawing conditions. The strain gage data indicated that there was partial interaction between the overlay and substrate concretes."],"dc:description.degree":["Master of Science"],"dc:format.medium":["BTD"],"dc:format.mimetype":["application/pdf"],"dc:identifier.other":["etd-08222008-063213"],"dc:identifier.uri":["http://hdl.handle.net/10919/44331"],"dc:language.iso":["en"],"dc:publisher":["Virginia Tech"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Structural performance evaluation of the Postrite post-treatment corrosion inhibitor system"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Civil Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:19:57Z"}