Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures

[EN] Crack initiators in reinforced concrete structures can facilitate fulfilling the serviceability requirements. They can be used as a design parameter to diminish the minimum reinforcement for members subject to imposed deformation and exposed to the environment as they reduce the crack spacing a...

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Autores: Bichof, Patrick, Ammann, Rebecca, Näsbom, Andreas, Kaufmann, Walter, Mata Falcon, Jaime|||0000-0001-8701-4410
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/212306
Acceso en línea:https://riunet.upv.es/handle/10251/212306
Access Level:acceso abierto
Palabra clave:Concrete structures
Crack initiators
Digital fabrication
Material efficiency
Minimum reinforcement
Weak interfaces
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
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repository_id_str
spelling Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structuresBichof, PatrickAmmann, RebeccaNäsbom, AndreasKaufmann, WalterMata Falcon, Jaime|||0000-0001-8701-4410Concrete structuresCrack initiatorsDigital fabricationMaterial efficiencyMinimum reinforcementWeak interfacesMECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS[EN] Crack initiators in reinforced concrete structures can facilitate fulfilling the serviceability requirements. They can be used as a design parameter to diminish the minimum reinforcement for members subject to imposed deformation and exposed to the environment as they reduce the crack spacing and width when arranged close enough. While crack initiators in conventional concrete construction are cumbersome to provide (e.g., by construction joints or taperings), they are inherent to layered extrusion processes with digital fabrication technologies: the tensile strength is typically reduced locally in interfaces between layers. Rather than trying to avoid these weak interfaces, this paper discusses the potential of taking advantage of them to act as crack initiators reducing the minimum reinforcement content. A tension chord-based model is developed to (i) account for the local strength reduction and (ii) predict the effect of weak interfaces on the expected crack spacing and width. As a key finding, the model predicts a reduction of the required minimum reinforcement ratio proportional to the locally decreased concrete tensile strength for a specified maximum crack width requirement under imposed deformations. An experimental campaign on five layered and three reference tension ties confirmed the clearly positive impact of weak interfaces on crack spacings and widths.The authors express their gratitude to Lex Reiter (IFB, ETH Zuerich) for his indispensable support in planning and conducting the experiments. This research is supported by the National Centre for Competence in Research in Digital Fabrication in Architecture, funded by the Swiss National Science Foundation (project number 51NF40 141853).John Wiley & SonsDepartamento de Mecánica de los Medios Continuos y Teoría de EstructurasEscuela Técnica Superior de Ingeniería de Caminos, Canales y PuertosSwiss National Science FoundationRepositorio Institucional de la Universitat Politècnica de València Riunet20232023-04-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/212306reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengSwiss National Science Foundation https://doi.org/10.13039/501100001711 51NF40141853open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/2123062026-06-13T07:49:27Z
dc.title.none.fl_str_mv Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
title Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
spellingShingle Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
Bichof, Patrick
Concrete structures
Crack initiators
Digital fabrication
Material efficiency
Minimum reinforcement
Weak interfaces
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
title_short Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
title_full Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
title_fullStr Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
title_full_unstemmed Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
title_sort Digitally fabricated weak interfaces to reduce minimum reinforcement in concrete structures
dc.creator.none.fl_str_mv Bichof, Patrick
Ammann, Rebecca
Näsbom, Andreas
Kaufmann, Walter
Mata Falcon, Jaime|||0000-0001-8701-4410
author Bichof, Patrick
author_facet Bichof, Patrick
Ammann, Rebecca
Näsbom, Andreas
Kaufmann, Walter
Mata Falcon, Jaime|||0000-0001-8701-4410
author_role author
author2 Ammann, Rebecca
Näsbom, Andreas
Kaufmann, Walter
Mata Falcon, Jaime|||0000-0001-8701-4410
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Mecánica de los Medios Continuos y Teoría de Estructuras
Escuela Técnica Superior de Ingeniería de Caminos, Canales y Puertos
Swiss National Science Foundation
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Concrete structures
Crack initiators
Digital fabrication
Material efficiency
Minimum reinforcement
Weak interfaces
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
topic Concrete structures
Crack initiators
Digital fabrication
Material efficiency
Minimum reinforcement
Weak interfaces
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
description [EN] Crack initiators in reinforced concrete structures can facilitate fulfilling the serviceability requirements. They can be used as a design parameter to diminish the minimum reinforcement for members subject to imposed deformation and exposed to the environment as they reduce the crack spacing and width when arranged close enough. While crack initiators in conventional concrete construction are cumbersome to provide (e.g., by construction joints or taperings), they are inherent to layered extrusion processes with digital fabrication technologies: the tensile strength is typically reduced locally in interfaces between layers. Rather than trying to avoid these weak interfaces, this paper discusses the potential of taking advantage of them to act as crack initiators reducing the minimum reinforcement content. A tension chord-based model is developed to (i) account for the local strength reduction and (ii) predict the effect of weak interfaces on the expected crack spacing and width. As a key finding, the model predicts a reduction of the required minimum reinforcement ratio proportional to the locally decreased concrete tensile strength for a specified maximum crack width requirement under imposed deformations. An experimental campaign on five layered and three reference tension ties confirmed the clearly positive impact of weak interfaces on crack spacings and widths.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-04-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/212306
url https://riunet.upv.es/handle/10251/212306
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Swiss National Science Foundation https://doi.org/10.13039/501100001711 51NF40141853
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento (by)
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento (by)
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869423739461959680
score 15,812429

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