{"id":{"repo_id":"uwo","oai_identifier":"oai:uwo.scholaris.ca:20.500.14721/32199"},"canonical_url":"https://search.dev.ndltd.org/etd/uwo/oai:uwo.scholaris.ca:20.500.14721/32199","repository":{"repo_id":"uwo","name":"Western University","base_url":"https://uwo.scholaris.ca/server/oai/request"},"display":{"title":"Flexural Behaviour of Concrete Beams with High Strength Reinforcement","abstract":"Using High Strength Reinforcement (HSR) in concrete construction allows steel volumes to be reduced, and economies to be realized. CSA Standard A23.3:19 “Design of Concrete Structures” limits the maximum yield strength for design to 500 MPa. This thesis investigates the flexural behavior of concrete beams reinforced with HSR to assess whether current code provisions are appropriate. Curvature ductility ratios are calculated for cross-sections with varying concrete compressive strengths, and reinforcement types and quantities. The effects of utilizing HSR on extreme fibre concrete compressive strains at Ultimate Limit State (ULS), moment redistribution at ULS, and deflections at Serviceability Limit States, are investigated. It was found that curvature ductility factors for sections reinforced with HSR are relatively less; A23.3:19 Clause 9.2.4, which specifies the maximum permissible moment redistribution at ULS, is appropriate for all beams investigated; and designs that meet the minimum height requirements of A23.3:19 Table 9.2 satisfy the deflection limits in A23.3:19 Table 9.3 for all beams investigated.","abstract_html":"Using High Strength Reinforcement (HSR) in concrete construction allows steel volumes to be reduced, and economies to be realized. CSA Standard A23.3:19 “Design of Concrete Structures” limits the maximum yield strength for design to 500 MPa. This thesis investigates the flexural behavior of concrete beams reinforced with HSR to assess whether current code provisions are appropriate. Curvature ductility ratios are calculated for cross-sections with varying concrete compressive strengths, and reinforcement types and quantities. The effects of utilizing HSR on extreme fibre concrete compressive strains at Ultimate Limit State (ULS), moment redistribution at ULS, and deflections at Serviceability Limit States, are investigated. It was found that curvature ductility factors for sections reinforced with HSR are relatively less; A23.3:19 Clause 9.2.4, which specifies the maximum permissible moment redistribution at ULS, is appropriate for all beams investigated; and designs that meet the minimum height requirements of A23.3:19 Table 9.2 satisfy the deflection limits in A23.3:19 Table 9.3 for all beams investigated.","abstract_has_math":false,"creators":["Akbar, Sohaib"],"institution":"The University of Western Ontario","degree_name":"M Eng Sci","degree_level":null,"degree_discipline":"Civil and Environmental Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Bartlett, F. Michael","Youssef, Maged A."],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-07-29","date_published":"2022-07-29","updated_at":"2026-07-27T21:56:05Z","subjects":["High Strength Reinforcement","Concrete Beams","Curvature Ductility","Moment Redistribution","Deflections"],"languages":["en_ca"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14721/32199","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Bartlett, F. 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In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."]},{"key":"dc:description.abstract","label":"Abstract","values":["Using High Strength Reinforcement (HSR) in concrete construction allows steel volumes to be reduced, and economies to be realized. CSA Standard A23.3:19 “Design of Concrete Structures” limits the maximum yield strength for design to 500 MPa. This thesis investigates the flexural behavior of concrete beams reinforced with HSR to assess whether current code provisions are appropriate. Curvature ductility ratios are calculated for cross-sections with varying concrete compressive strengths, and reinforcement types and quantities. The effects of utilizing HSR on extreme fibre concrete compressive strains at Ultimate Limit State (ULS), moment redistribution at ULS, and deflections at Serviceability Limit States, are investigated. It was found that curvature ductility factors for sections reinforced with HSR are relatively less; A23.3:19 Clause 9.2.4, which specifies the maximum permissible moment redistribution at ULS, is appropriate for all beams investigated; and designs that meet the minimum height requirements of A23.3:19 Table 9.2 satisfy the deflection limits in A23.3:19 Table 9.3 for all beams investigated."]},{"key":"dc:title","label":"Title","values":["Flexural Behaviour of Concrete Beams with High Strength Reinforcement"]}]}],"canonical_facts":{"dc:contributor.advisor":["Bartlett, F. Michael","Youssef, Maged A."],"dc:creator":["Akbar, Sohaib"],"dc:date.accessioned":["2025-07-10T19:27:38Z"],"dc:date.available":["2025-07-10T19:27:38Z"],"dc:date.issued":["2022-07-29"],"dc:description":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."],"dc:description.abstract":["Using High Strength Reinforcement (HSR) in concrete construction allows steel volumes to be reduced, and economies to be realized. CSA Standard A23.3:19 “Design of Concrete Structures” limits the maximum yield strength for design to 500 MPa. This thesis investigates the flexural behavior of concrete beams reinforced with HSR to assess whether current code provisions are appropriate. Curvature ductility ratios are calculated for cross-sections with varying concrete compressive strengths, and reinforcement types and quantities. The effects of utilizing HSR on extreme fibre concrete compressive strains at Ultimate Limit State (ULS), moment redistribution at ULS, and deflections at Serviceability Limit States, are investigated. It was found that curvature ductility factors for sections reinforced with HSR are relatively less; A23.3:19 Clause 9.2.4, which specifies the maximum permissible moment redistribution at ULS, is appropriate for all beams investigated; and designs that meet the minimum height requirements of A23.3:19 Table 9.2 satisfy the deflection limits in A23.3:19 Table 9.3 for all beams investigated."],"dc:identifier.uri":["https://hdl.handle.net/20.500.14721/32199"],"dc:language.iso":["en_ca"],"dc:publisher":["The University of Western Ontario"],"dc:subject":["High Strength Reinforcement","Concrete Beams","Curvature Ductility","Moment Redistribution","Deflections"],"dc:title":["Flexural Behaviour of Concrete Beams with High Strength Reinforcement"],"dc:type":["thesis"],"thesis:degree_discipline":["Civil and Environmental Engineering"],"thesis:degree_name":["M Eng Sci"]},"updated_at":"2026-07-27T21:56:05Z"}