Presence of asbestiform minerals in lightweight concretes. Their environmental impact
Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina.
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2015
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| Subjects: | Concreto ligero, Estructuras civiles, Agregados livianos, Efecto ambiental nocivo, Hormigón, |
| Online Access: | http://hdl.handle.net/11086/552192 |
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dig-unc-ar-11086-5521922024-06-06T06:23:49Z Presence of asbestiform minerals in lightweight concretes. Their environmental impact Lescano, Leticia Marfil, Silvina A. Maiza, Pedro J. Sfragulla, Jorge A. Bonalumi, Aldo A. Concreto ligero Estructuras civiles Agregados livianos Efecto ambiental nocivo Hormigón 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 2024-06-05T12:47:18Z 2024-06-05T12:47:18Z 2015 conferenceObject http://hdl.handle.net/11086/552192 eng Attribution-NonCommercial-ShareAlike 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ Impreso |
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Argentina |
| countrycode |
AR |
| component |
Bibliográfico |
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| databasecode |
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| tag |
biblioteca |
| region |
America del Sur |
| libraryname |
Biblioteca 'Ing. Agrónomo Moisés Farber' de la Facultad de Ciencias Agropecuarias |
| language |
eng |
| topic |
Concreto ligero Estructuras civiles Agregados livianos Efecto ambiental nocivo Hormigón Concreto ligero Estructuras civiles Agregados livianos Efecto ambiental nocivo Hormigón |
| spellingShingle |
Concreto ligero Estructuras civiles Agregados livianos Efecto ambiental nocivo Hormigón Concreto ligero Estructuras civiles Agregados livianos Efecto ambiental nocivo Hormigón Lescano, Leticia Marfil, Silvina A. Maiza, Pedro J. Sfragulla, Jorge A. Bonalumi, Aldo A. Presence of asbestiform minerals in lightweight concretes. Their environmental impact |
| description |
Fil: Lescano, Leticia. Comisión de Investigaciones Científicas de la Provincia de Bs. As; Argentina. |
| format |
conferenceObject |
| topic_facet |
Concreto ligero Estructuras civiles Agregados livianos Efecto ambiental nocivo Hormigón |
| author |
Lescano, Leticia Marfil, Silvina A. Maiza, Pedro J. Sfragulla, Jorge A. Bonalumi, Aldo A. |
| author_facet |
Lescano, Leticia Marfil, Silvina A. Maiza, Pedro J. Sfragulla, Jorge A. Bonalumi, Aldo A. |
| author_sort |
Lescano, Leticia |
| title |
Presence of asbestiform minerals in lightweight concretes. Their environmental impact |
| 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 |
| publishDate |
2015 |
| url |
http://hdl.handle.net/11086/552192 |
| work_keys_str_mv |
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