Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method

Descripción del Articulo

This project was carried out thanks to the scholarship funds for postgraduate studies of CONCYTEC PERU. Also, the tests were performed at the Structures Laboratory of the Pontifical Catholic University of Peru.
Detalles Bibliográficos
Autores: Lipa, L, Navarro, LM, Pasquel, EN
Formato: artículo
Fecha de Publicación:2019
Institución:Consejo Nacional de Ciencia Tecnología e Innovación
Repositorio:CONCYTEC-Institucional
Lenguaje:inglés
OAI Identifier:oai:repositorio.concytec.gob.pe:20.500.12390/1185
Enlace del recurso:https://hdl.handle.net/20.500.12390/1185
https://doi.org/10.14359/51715582
Nivel de acceso:acceso abierto
Materia:Voids
Flaw detection
Honeycombs
Pulse echo
Reinforced concrete
Ultrasonic
https://purl.org/pe-repo/ocde/ford#2.01.03
id CONC_593b1e0a2dba9c1111ddc2bf0e77d81b
oai_identifier_str oai:repositorio.concytec.gob.pe:20.500.12390/1185
network_acronym_str CONC
network_name_str CONCYTEC-Institucional
repository_id_str 4689
dc.title.none.fl_str_mv Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
title Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
spellingShingle Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
Lipa, L
Voids
Flaw detection
Honeycombs
Pulse echo
Reinforced concrete
Ultrasonic
https://purl.org/pe-repo/ocde/ford#2.01.03
title_short Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
title_full Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
title_fullStr Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
title_full_unstemmed Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
title_sort Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
author Lipa, L
author_facet Lipa, L
Navarro, LM
Pasquel, EN
author_role author
author2 Navarro, LM
Pasquel, EN
author2_role author
author
dc.contributor.author.fl_str_mv Lipa, L
Navarro, LM
Pasquel, EN
dc.subject.none.fl_str_mv Voids
topic Voids
Flaw detection
Honeycombs
Pulse echo
Reinforced concrete
Ultrasonic
https://purl.org/pe-repo/ocde/ford#2.01.03
dc.subject.es_PE.fl_str_mv Flaw detection
Honeycombs
Pulse echo
Reinforced concrete
Ultrasonic
dc.subject.ocde.none.fl_str_mv https://purl.org/pe-repo/ocde/ford#2.01.03
description This project was carried out thanks to the scholarship funds for postgraduate studies of CONCYTEC PERU. Also, the tests were performed at the Structures Laboratory of the Pontifical Catholic University of Peru.
publishDate 2019
dc.date.accessioned.none.fl_str_mv 2024-05-30T23:13:38Z
dc.date.available.none.fl_str_mv 2024-05-30T23:13:38Z
dc.date.issued.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/20.500.12390/1185
dc.identifier.doi.none.fl_str_mv https://doi.org/10.14359/51715582
dc.identifier.isi.none.fl_str_mv 478070000024
url https://hdl.handle.net/20.500.12390/1185
https://doi.org/10.14359/51715582
identifier_str_mv 478070000024
dc.language.iso.none.fl_str_mv eng
language eng
dc.relation.ispartof.none.fl_str_mv ACI Materials Journal
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Concrete Institute
publisher.none.fl_str_mv American Concrete Institute
dc.source.none.fl_str_mv reponame:CONCYTEC-Institucional
instname:Consejo Nacional de Ciencia Tecnología e Innovación
instacron:CONCYTEC
instname_str Consejo Nacional de Ciencia Tecnología e Innovación
instacron_str CONCYTEC
institution CONCYTEC
reponame_str CONCYTEC-Institucional
collection CONCYTEC-Institucional
repository.name.fl_str_mv Repositorio Institucional CONCYTEC
repository.mail.fl_str_mv repositorio@concytec.gob.pe
_version_ 1844883003188183040
spelling Publicationrp03383600rp03382600rp03384600Lipa, LNavarro, LMPasquel, EN2024-05-30T23:13:38Z2024-05-30T23:13:38Z2019https://hdl.handle.net/20.500.12390/1185https://doi.org/10.14359/51715582478070000024This project was carried out thanks to the scholarship funds for postgraduate studies of CONCYTEC PERU. Also, the tests were performed at the Structures Laboratory of the Pontifical Catholic University of Peru.In this research, the influence of steel bars in the detection of voids in concrete elements using the ultrasonic pulse-echo method was analyzed. For this purpose, reinforced concrete walls were made that contain No. 3, No. 4, or No. 5 steel bars, and expanded polystyrene spheres 50 mm (1.97 in.) in diameter, which represent internal voids. Spheres of smaller diameter were not used because their detection is very low. An ultrasonic pulse-echo device of 50 kHz frequency transverse waves that uses a synthetic aperture focusing technique (SAFT) was used. The steel bars were placed with different separations to observe the effect they cause in a scan. In addition, the spheres were laid between these different configurations with the purpose of verifying if their detection is possible. Additionally, image processing was carried out to eliminate or totally reduce the effect of the steel bars in the scans. This research concluded that when scans are performed on strips with transverse No. 3, No. 4, and No. 5 bars, these would appear in the ultrasound image with a probability of 35.4%, 41.7%, and 62.5%, respectively. In addition, if the scan is performed on a strip with No. 4 or No. 5 bars, which have the same direction of the scan, they appear in large magnitude in the ultrasound images, so it is very difficult to distinguish if there is another material in these areas. However, in this last case, if the bars are No. 3, they do not appear in the scan. On the other hand, the spheres were located with a probability of 81.3% when they were located between steel bars separated by a distance greater than or equal to 100 mm (1.97 in.).Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - ConcytecengAmerican Concrete InstituteACI Materials Journalinfo:eu-repo/semantics/openAccessVoidsFlaw detection-1Honeycombs-1Pulse echo-1Reinforced concrete-1Ultrasonic-1https://purl.org/pe-repo/ocde/ford#2.01.03-1Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Methodinfo:eu-repo/semantics/articlereponame:CONCYTEC-Institucionalinstname:Consejo Nacional de Ciencia Tecnología e Innovacióninstacron:CONCYTEC#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#20.500.12390/1185oai:repositorio.concytec.gob.pe:20.500.12390/11852024-05-30 15:23:51.071http://purl.org/coar/access_right/c_14cbinfo:eu-repo/semantics/closedAccessmetadata only accesshttps://repositorio.concytec.gob.peRepositorio Institucional CONCYTECrepositorio@concytec.gob.pe#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#<Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="96fdbfc5-d4fc-4a80-be67-5c4209f9cb32"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method</Title> <PublishedIn> <Publication> <Title>ACI Materials Journal</Title> </Publication> </PublishedIn> <PublicationDate>2019</PublicationDate> <DOI>https://doi.org/10.14359/51715582</DOI> <ISI-Number>478070000024</ISI-Number> <Authors> <Author> <DisplayName>Lipa, L</DisplayName> <Person id="rp03383" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Navarro, LM</DisplayName> <Person id="rp03382" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Pasquel, EN</DisplayName> <Person id="rp03384" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>American Concrete Institute</DisplayName> <OrgUnit /> </Publisher> </Publishers> <Keyword>Voids</Keyword> <Keyword>Flaw detection</Keyword> <Keyword>Honeycombs</Keyword> <Keyword>Pulse echo</Keyword> <Keyword>Reinforced concrete</Keyword> <Keyword>Ultrasonic</Keyword> <Abstract>In this research, the influence of steel bars in the detection of voids in concrete elements using the ultrasonic pulse-echo method was analyzed. For this purpose, reinforced concrete walls were made that contain No. 3, No. 4, or No. 5 steel bars, and expanded polystyrene spheres 50 mm (1.97 in.) in diameter, which represent internal voids. Spheres of smaller diameter were not used because their detection is very low. An ultrasonic pulse-echo device of 50 kHz frequency transverse waves that uses a synthetic aperture focusing technique (SAFT) was used. The steel bars were placed with different separations to observe the effect they cause in a scan. In addition, the spheres were laid between these different configurations with the purpose of verifying if their detection is possible. Additionally, image processing was carried out to eliminate or totally reduce the effect of the steel bars in the scans. This research concluded that when scans are performed on strips with transverse No. 3, No. 4, and No. 5 bars, these would appear in the ultrasound image with a probability of 35.4%, 41.7%, and 62.5%, respectively. In addition, if the scan is performed on a strip with No. 4 or No. 5 bars, which have the same direction of the scan, they appear in large magnitude in the ultrasound images, so it is very difficult to distinguish if there is another material in these areas. However, in this last case, if the bars are No. 3, they do not appear in the scan. On the other hand, the spheres were located with a probability of 81.3% when they were located between steel bars separated by a distance greater than or equal to 100 mm (1.97 in.).</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication> -1
score 13.386405
Influence of Steel Bars in Detection of Voids in Concrete Using Ultrasonic Pulse-Echo Method
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La información contenida en este registro es de entera responsabilidad de la institución que gestiona el repositorio institucional donde esta contenido este documento o set de datos. El CONCYTEC no se hace responsable por los contenidos (publicaciones y/o datos) accesibles a través del Repositorio Nacional Digital de Ciencia, Tecnología e Innovación de Acceso Abierto (ALICIA).

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