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A simplified five-point inverse analysis method to determine the tensile properties of UHPFRC from unnotched four-point bending tests

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A simplified five-point inverse analysis method to determine the tensile properties of UHPFRC from unnotched four-point bending tests

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dc.contributor.author López Martínez, Juan Ángel es_ES
dc.contributor.author Serna Ros, Pedro es_ES
dc.contributor.author Navarro-Gregori, Juan es_ES
dc.contributor.author Coll Carrillo, Hugo es_ES
dc.date.accessioned 2017-03-01T18:37:43Z
dc.date.available 2017-03-01T18:37:43Z
dc.date.issued 2016
dc.identifier.issn 1359-8368
dc.identifier.uri http://hdl.handle.net/10251/78426
dc.description.abstract Characterisation of the tensile behaviour of UHPFRC remains a challenge for researchers, and an agreement on the standard test set-up and advisability of notch is yet to be reached. Bending tests are easier to conduct if compared to direct tensile tests, but require a sophisticated post-process to obtain the uniaxial tensile behaviour of specimens. Unlike notched tests, unnotched tests allow the determination of strain-hardening behaviour, which characterises UHPFRC tensile behaviour. However, post-cracking behaviour is more difficult to analyse. This work focuses on the development of a new simplified inverse analysis method applied to unnotched four-point bending tests which improves current simplified methods, but maintains the accuracy of more complex ones. For this purpose, an analytical model based on a quadrilinear assumption of tensile behaviour in tension was assumed. A statistical analysis of theoretical flexural strength vs. displacement on mid-span analytical curves was conducted to link the assumed tensile behaviour to the analytical flexural behaviour that derived from it. After this process, a simplified method to obtain not only the stressestrain behaviour prior to crack localisation, but also the stressecrack opening relationship after that point is proposed. The new method is based on the determination of only five key points in experimental bending strength vs. displacement at mid-span curves and in the application of a backof- the-envelope calculation. The analytical basis on which the method is based, justification of key point selection, and the process followed to achieve the simplified formulation, which allows dispensing with the use of a computer, are presented. An application example on a UHPFRC unnotched four-point bending test specimen, and its comparison with a point-by-point inverse analysis, are included. es_ES
dc.description.sponsorship This work forms part of the "FISNE" research projects, with reference BIA2012-35776, supported by the Spanish Ministry of Economy and Competiveness and FEDER funds. Support for this project is gratefully acknowledged. We also wish to thank the Spanish Ministry of Education, Culture and Sport for its FPU scholarship programme. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Ministry of Education, Culture and Sport for its FPU scholarship programme es_ES
dc.relation “FISNE” research projects, with reference BIA2012-35776, supported by the Spanish Ministry of Economy and Competiveness and FEDER funds es_ES
dc.relation.ispartof Composites Part B: Engineering es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Fibres es_ES
dc.subject Mechanical properties es_ES
dc.subject Residual/internal stress es_ES
dc.subject Analytical modelling es_ES
dc.subject Uniaxial tensile behaviour es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title A simplified five-point inverse analysis method to determine the tensile properties of UHPFRC from unnotched four-point bending tests es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.compositesb.2016.01.026
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.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 Lopez Martinez, JA.; Serna Ros, P.; Navarro-Gregori, J.; Coll Carrillo, H. (2016). A simplified five-point inverse analysis method to determine the tensile properties of UHPFRC from unnotched four-point bending tests. Composites Part B: Engineering. 91:189-204. doi:10.1016/j.compositesb.2016.01.026 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.compositesb.2016.01.026 es_ES
dc.description.upvformatpinicio 189 es_ES
dc.description.upvformatpfin 204 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 91 es_ES
dc.relation.senia 321825 es_ES


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