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Measured Transfer Lengths of 0.7 in. (17.8 mm) Strands for Pretensioned Beams

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Measured Transfer Lengths of 0.7 in. (17.8 mm) Strands for Pretensioned Beams

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dc.contributor.author Dang, C.N. es_ES
dc.contributor.author Floyd, R.W. es_ES
dc.contributor.author Hale, W. M es_ES
dc.contributor.author Martí Vargas, José Rocío es_ES
dc.date.accessioned 2017-07-19T17:56:59Z
dc.date.available 2017-07-19T17:56:59Z
dc.date.issued 2016-01
dc.identifier.issn 0889-3241
dc.identifier.uri http://hdl.handle.net/10251/85468
dc.description.abstract [EN] The use of 0.7 in. (17.8 mm), Grade 270 (1860) prestressing strands has advantages over 0.5 and 0.6 in. (12.7 and 15.22 mm) strands. This study provides design guidelines for estimating transfer length of 0.7 in. (17.8 mm) strands. Sixteen pretensioned concrete beams using a single prestressing strand were fabricated with conventional concrete and self-consolidating concrete. The concrete strengths at 1 day ranged from 5.9 to 9.2 ksi (40.7 to 63.4 MPa). Transfer lengths were determined using concrete surface strains along with the Average Maximum Strain Method. Initial strand end slips were also measured for predicting transfer length at release using an empirical formula. Experimental results indicated ACI 318 and AASHTO specifications are applicable for estimating transfer length of 0.7 in. (17.8 mm) strands at release and at 28 days. The results also showed that a coefficient of 2.32 was the most appropriate value for estimating transfer lengths at release from initial strand end slips. es_ES
dc.description.sponsorship The authors would like to acknowledge the financial and technical support from the Arkansas State Highway and Transportation Department (AHTD) and the Mack-Blackwell Rural Transportation Center (MBTC). The authors would like to thank Insteel Industries Inc. for providing the strand for this research. The authors are very thankful for the contributions of R. Deschenes Jr., C. Murray, J. Daniels III, W. Phillips, D. Davis, A. Ramirez, and R. Hagedorn for their assistance in beam fabrication at the Engineering Research Center at the University of Arkansas.
dc.language Inglés es_ES
dc.publisher American Concrete Institute es_ES
dc.relation.ispartof Structural Journal es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject 0.7 in. (17.8 mm) strand,end-slip es_ES
dc.subject Prestressing strand es_ES
dc.subject Pretensioned concrete es_ES
dc.subject Transfer length es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Measured Transfer Lengths of 0.7 in. (17.8 mm) Strands for Pretensioned Beams es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.14359/51687941
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos - Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports es_ES
dc.description.bibliographicCitation Dang, C.; Floyd, R.; Hale, WM.; Martí Vargas, JR. (2016). Measured Transfer Lengths of 0.7 in. (17.8 mm) Strands for Pretensioned Beams. Structural Journal. 113(1):85-94. doi:10.14359/51687941 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.14359/51687941 es_ES
dc.description.upvformatpinicio 85 es_ES
dc.description.upvformatpfin 94 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 113 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 326095 es_ES
dc.contributor.funder Arkansas State Highway and Transportation Department
dc.contributor.funder University of Arkansas


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