Presence of asbestiform minerals in lightweight concretes. Their environmental impact

Autores
Lescano, Leticia; Marfil, Silvina A.; Maiza, Pedro J.; Sfragulla, Jorge A.; Bonalumi, Aldo A.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Lescano, Leticia. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Marfil, Silvina A. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Marfil, Silvina A. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Maiza, Pedro J. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Sfragulla, Jorge A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Bonalumi, Aldo A.Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Lightweight concrete has a lower unit weight than conventional concrete and a high thermal insulation capacity. It is manufactured with either natural or artificial lightweight aggregates. Vermiculite, one of the natural lightweight aggregates used, is a micaceous material that when heated increases its original volume due to an exfoliation process, so its incorporation in concrete or mortar imparts very low density. These natural materials usually contain impurities such as asbestiform minerals that can be released during the expansion process, causing a harmful environmental effect. Commercial asbestos-containing materials are currently banned due to the asbestos-related lung diseases they cause. In the province of Córdoba, Argentina, there are vermiculite mines where impurities such as asbestos group minerals have been identified. Studies using stereomicroscope, petrographic microscope, XRD, SEM, DTA and chemical analyses were conducted to characterize the different types of asbestos present and determine their particle size to assess whether they could be harmful to human health. Mica group minerals, abundant quartz and amphiboles were identified. The latter occur as isolated green crystals and their average length is 900 µm. Tremolite was determined by XRD. The aim of the present work is to reveal the presence of these minerals and warn about their use and disposal at the end of the useful service life of the work.
Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Lescano, Leticia. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Marfil, Silvina A. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Marfil, Silvina A. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Maiza, Pedro J. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Sfragulla, Jorge A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Bonalumi, Aldo A.Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Otras Ingeniería de los Materiales
Materia
Concreto ligero
Estructuras civiles
Agregados livianos
Efecto ambiental nocivo
Hormigón
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/552192
Acceder
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oai_identifier_str oai:rdu.unc.edu.ar:11086/552192
network_acronym_str RDUUNC
repository_id_str 2572
network_name_str Repositorio Digital Universitario (UNC)
spelling Presence of asbestiform minerals in lightweight concretes. Their environmental impactLescano, LeticiaMarfil, Silvina A.Maiza, Pedro J.Sfragulla, Jorge A.Bonalumi, Aldo A.Concreto ligeroEstructuras civilesAgregados livianosEfecto ambiental nocivoHormigónFil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.Fil: Lescano, Leticia. Universidad Nacional del Sur. Departamento de Geología; Argentina.Fil: Marfil, Silvina A. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.Fil: Marfil, Silvina A. Universidad Nacional del Sur. Departamento de Geología; Argentina.Fil: Maiza, Pedro J. Universidad Nacional del Sur. Departamento de Geología; Argentina.Fil: Sfragulla, Jorge A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Bonalumi, Aldo A.Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Lightweight concrete has a lower unit weight than conventional concrete and a high thermal insulation capacity. It is manufactured with either natural or artificial lightweight aggregates. Vermiculite, one of the natural lightweight aggregates used, is a micaceous material that when heated increases its original volume due to an exfoliation process, so its incorporation in concrete or mortar imparts very low density. These natural materials usually contain impurities such as asbestiform minerals that can be released during the expansion process, causing a harmful environmental effect. Commercial asbestos-containing materials are currently banned due to the asbestos-related lung diseases they cause. In the province of Córdoba, Argentina, there are vermiculite mines where impurities such as asbestos group minerals have been identified. Studies using stereomicroscope, petrographic microscope, XRD, SEM, DTA and chemical analyses were conducted to characterize the different types of asbestos present and determine their particle size to assess whether they could be harmful to human health. Mica group minerals, abundant quartz and amphiboles were identified. The latter occur as isolated green crystals and their average length is 900 µm. Tremolite was determined by XRD. The aim of the present work is to reveal the presence of these minerals and warn about their use and disposal at the end of the useful service life of the work.Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.Fil: Lescano, Leticia. Universidad Nacional del Sur. Departamento de Geología; Argentina.Fil: Marfil, Silvina A. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.Fil: Marfil, Silvina A. Universidad Nacional del Sur. Departamento de Geología; Argentina.Fil: Maiza, Pedro J. Universidad Nacional del Sur. Departamento de Geología; Argentina.Fil: Sfragulla, Jorge A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Bonalumi, Aldo A.Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Otras Ingeniería de los Materiales2015info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://hdl.handle.net/11086/552192enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2025-09-04T12:31:19Zoai:rdu.unc.edu.ar:11086/552192Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722025-09-04 12:31:19.937Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse
dc.title.none.fl_str_mv Presence of asbestiform minerals in lightweight concretes. Their environmental impact
title Presence of asbestiform minerals in lightweight concretes. Their environmental impact
spellingShingle Presence of asbestiform minerals in lightweight concretes. Their environmental impact
Lescano, Leticia
Concreto ligero
Estructuras civiles
Agregados livianos
Efecto ambiental nocivo
Hormigón
title_short Presence of asbestiform minerals in lightweight concretes. Their environmental impact
title_full Presence of asbestiform minerals in lightweight concretes. Their environmental impact
title_fullStr Presence of asbestiform minerals in lightweight concretes. Their environmental impact
title_full_unstemmed Presence of asbestiform minerals in lightweight concretes. Their environmental impact
title_sort Presence of asbestiform minerals in lightweight concretes. Their environmental impact
dc.creator.none.fl_str_mv Lescano, Leticia
Marfil, Silvina A.
Maiza, Pedro J.
Sfragulla, Jorge A.
Bonalumi, Aldo A.
author Lescano, Leticia
author_facet Lescano, Leticia
Marfil, Silvina A.
Maiza, Pedro J.
Sfragulla, Jorge A.
Bonalumi, Aldo A.
author_role author
author2 Marfil, Silvina A.
Maiza, Pedro J.
Sfragulla, Jorge A.
Bonalumi, Aldo A.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Concreto ligero
Estructuras civiles
Agregados livianos
Efecto ambiental nocivo
Hormigón
topic Concreto ligero
Estructuras civiles
Agregados livianos
Efecto ambiental nocivo
Hormigón
dc.description.none.fl_txt_mv Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Lescano, Leticia. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Marfil, Silvina A. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Marfil, Silvina A. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Maiza, Pedro J. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Sfragulla, Jorge A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Bonalumi, Aldo A.Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Lightweight concrete has a lower unit weight than conventional concrete and a high thermal insulation capacity. It is manufactured with either natural or artificial lightweight aggregates. Vermiculite, one of the natural lightweight aggregates used, is a micaceous material that when heated increases its original volume due to an exfoliation process, so its incorporation in concrete or mortar imparts very low density. These natural materials usually contain impurities such as asbestiform minerals that can be released during the expansion process, causing a harmful environmental effect. Commercial asbestos-containing materials are currently banned due to the asbestos-related lung diseases they cause. In the province of Córdoba, Argentina, there are vermiculite mines where impurities such as asbestos group minerals have been identified. Studies using stereomicroscope, petrographic microscope, XRD, SEM, DTA and chemical analyses were conducted to characterize the different types of asbestos present and determine their particle size to assess whether they could be harmful to human health. Mica group minerals, abundant quartz and amphiboles were identified. The latter occur as isolated green crystals and their average length is 900 µm. Tremolite was determined by XRD. The aim of the present work is to reveal the presence of these minerals and warn about their use and disposal at the end of the useful service life of the work.
Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Lescano, Leticia. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Marfil, Silvina A. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
Fil: Marfil, Silvina A. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Maiza, Pedro J. Universidad Nacional del Sur. Departamento de Geología; Argentina.
Fil: Sfragulla, Jorge A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Bonalumi, Aldo A.Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Otras Ingeniería de los Materiales
description Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11086/552192
url http://hdl.handle.net/11086/552192
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Digital Universitario (UNC)
instname:Universidad Nacional de Córdoba
instacron:UNC
reponame_str Repositorio Digital Universitario (UNC)
collection Repositorio Digital Universitario (UNC)
instname_str Universidad Nacional de Córdoba
instacron_str UNC
institution UNC
repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
repository.mail.fl_str_mv oca.unc@gmail.com
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score 13.13397

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