Prestress losses in high performance lightweight concrete pretensioned bridge girders

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dc.contributor.authorKahn, LF
dc.contributor.authorLopez, M
dc.date.accessioned2024-01-10T13:16:32Z
dc.date.available2024-01-10T13:16:32Z
dc.date.issued2005
dc.description.abstractThe purpose of this research was to determine the time-dependent behavior of high performance lightweight concrete and to examine how long-term behavior affects the prestress losses in high strength precast, prestressed concrete bridge girders made using expanded slate lightweight aggregate. Two different high performance lightweight concretes (HPLC) with strengths of 8000 and 10,000 psi (55 and 69 MPa) were developed. They had air-dry unit weights of 116 and 118 lb/ft(3) (1855 and 1890 kg/m(3)), respectively. Creep, shrinkage, and other prestress loss parameters were investigated on 36 cylinder specimens and four AASHTO Type II girders. Generally, prestress losses determined from the AASHTO Type II girders made with HPLC were less than those predicted using AASHTO, PCI, and ACI 209 methods. Based on the experimental data, the total final prestress losses were estimated to be 20 and 15 percent of the initial prestressing force for the 8000 and 10,000 psi (55 and 69 MPa) HPLC, respectively.
dc.format.extent12 páginas
dc.fuente.origenWOS
dc.identifier.doi10.15554/pcij.09012005.84.94
dc.identifier.issn0887-9672
dc.identifier.urihttps://doi.org/10.15554/pcij.09012005.84.94
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78592
dc.identifier.wosidWOS:000232077200007
dc.information.autorucIngeniería;López M;S/I;7202
dc.issue.numero5
dc.language.isoen
dc.nota.accesoSin adjunto
dc.publisherPRECAST/PRESTRESSED CONCRETE INST
dc.revistaPCI JOURNAL
dc.rightsregistro bibliográfico
dc.subjectAASHTO specifications
dc.subjectbridges
dc.subjectcreep
dc.subjectgirders
dc.subjecthigh performance concrete
dc.subjectlightweight concrete
dc.subjectprecast concrete
dc.subjectprestressed concrete
dc.subjectprestress losses
dc.subjectresearch shrinkage
dc.subjecttesting
dc.subjectLENGTH
dc.subjectSTRAND
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titlePrestress losses in high performance lightweight concrete pretensioned bridge girders
dc.typeartículo
dc.volumen50
sipa.codpersvinculados7202
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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