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Time-dependent evolution of strand transfer length in pretensioned prestressed concrete members

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Time-dependent evolution of strand transfer length in pretensioned prestressed concrete members

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dc.contributor.author Caro Forero, Libardo Andrés es_ES
dc.contributor.author Martí Vargas, José Rocío es_ES
dc.contributor.author Serna Ros, Pedro es_ES
dc.date.accessioned 2015-04-21T14:36:18Z
dc.date.available 2015-04-21T14:36:18Z
dc.date.issued 2013-11
dc.identifier.issn 1385-2000
dc.identifier.uri http://hdl.handle.net/10251/49073
dc.description.abstract For design purposes, it is generally considered that prestressing strand transfer length does not change with time. However, some experimental studies on the effect of time on transfer lengths show contradictory results. In this paper, an experimental research to study transfer length changes over time is presented. A test procedure based on the ECADA testing technique to measure prestressing strand force variation over time in pretensioned prestressed concrete specimens has been set up. With this test method, an experimental program that varies concrete strength, specimen cross section, age of release, prestress transfer method, and embedment length has been carried out. Both the initial and long-term transfer lengths of 13-mm prestressing steel strands have been measured. The test results show that transfer length variation exists for some prestressing load conditions, resulting in increased transfer length over time. The applied test method based on prestressing strand force measurements has shown more reliable results than procedures based on measuring free end slips and longitudinal strains of concrete. An additional factor for transfer length models is proposed in order to include the time-dependent evolution of strand transfer length in pretensioned prestressed concrete members. © 2012 Springer Science+Business Media Dordrecht. es_ES
dc.description.sponsorship Funding for this experimental research work has been provided by the Spanish Ministry of Education and Science and ERDF (Projects BIA2006-05521 and BIA2009-12722). Tests have been conducted at the Institute of Concrete Science and Technology (ICITECH), at the Universitat Politecnica de Valencia (Spain). en_EN
dc.language Inglés es_ES
dc.publisher Society for Experimental Mechanics (SEM) es_ES
dc.relation Institute of Concrete Science and Technology (ICITECH), at the Universitat Politècnica de València (Spain) es_ES
dc.relation Spanish Ministry of Education and Science and ERDF (Projects BIA2006-05521 and BIA2009-12722) es_ES
dc.relation.ispartof Mechanics of Time-Dependent Materials es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Bond es_ES
dc.subject Concrete es_ES
dc.subject Prestress es_ES
dc.subject Strand es_ES
dc.subject Time es_ES
dc.subject Transfer length es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Time-dependent evolution of strand transfer length in pretensioned prestressed concrete members es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1007/s11043-012-9200-2
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Ciencia y Tecnología del Hormigón - Institut de Ciència i Tecnologia del Formigó es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería de la Construcción y de Proyectos de Ingeniería Civil - Departament d'Enginyeria de la Construcció i de Projectes d'Enginyeria Civil es_ES
dc.description.bibliographicCitation Caro Forero, LA.; Martí Vargas, JR.; Serna Ros, P. (2013). Time-dependent evolution of strand transfer length in pretensioned prestressed concrete members. Mechanics of Time-Dependent Materials. 17(4):501-527. doi:10.1007/s11043-012-9200-2 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1007/s11043-012-9200-2 es_ES
dc.description.upvformatpinicio 501 es_ES
dc.description.upvformatpfin 527 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 17 es_ES
dc.description.issue 4 es_ES
dc.relation.senia 258749
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