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dc.contributor.author
Musso, Telma Belén
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dc.contributor.author
Francisca, Franco Matias
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dc.contributor.author
Pettinari, Gisela Roxana
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dc.contributor.author
Roehl, K.e.
dc.date.available
2018-12-14T17:25:44Z
dc.date.issued
2016-11
dc.identifier.citation
Musso, Telma Belén; Francisca, Franco Matias; Pettinari, Gisela Roxana; Roehl, K.e.; Suitability of a cretaceous natural NA-bentonite as construction material for landfill liners; Gheorghe Asachi Technical University of Iasi; Environmental Engineering And Management Journal; 15; 11; 11-2016; 2519-2528
dc.identifier.issn
1582-9596
dc.identifier.uri
http://hdl.handle.net/11336/66501
dc.description.abstract
A natural Cretaceous sodium (Na) bentonite from North Patagonia, Argentine, is considered a potential construction material for landfill liners. It is studied alone and in mixtures with sand. Physical and chemical properties of the Na-bentonite were determined to verify the suitability of this material for the construction of low permeability mineral liners. Hydraulic conductivity measurements were conducted on pure bentonite and on mixtures of poorly graded sand with 3, 6, 9 and 12% of Na-bentonite. Compaction and hydraulic conductivity tests were performed using deionized water and a 1000 mol/m3 CaCl2 solution to determine the effects of a high concentrated saline solution on the hydraulic properties of compacted sand-bentonite mixtures. The experimental results confirm that the pure powdered bentonite meets current specifications to be used as part of a geosynthetic clay liner (GCL), and that ageing effects may affect the hydraulic behavior of this material. Compacted sand-bentonite mixtures required a minimum bentonite content of 6% in order to achieve hydraulic conductivities lower than 1 x 10-9 m/s which is a regular requirement for hydraulic containment liners. However, in contact with a strong saline solution (1000 mol/m3 CaCl2), the permeability of the mixtures increased between three and five orders of magnitude. This indicates that a higher percent of bentonite is required to reach an acceptable hydraulic conductivity value when the mixtures are permeated with a CaCl2 solution. The results show that a new applicability was found for bentonites of regional provenance as well as high reserves which have a naturally very high amount of sodium.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Gheorghe Asachi Technical University of Iasi
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Permeability
dc.subject
Clay
dc.subject
Montomorillonite
dc.subject
Landfill
dc.subject.classification
Ingeniería Medioambiental y Geológica, Geotécnicas
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dc.subject.classification
Ingeniería del Medio Ambiente
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Suitability of a cretaceous natural NA-bentonite as construction material for landfill liners
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-22T13:19:26Z
dc.journal.volume
15
dc.journal.number
11
dc.journal.pagination
2519-2528
dc.journal.pais
Rumania
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dc.journal.ciudad
Iasi
dc.description.fil
Fil: Musso, Telma Belén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina
dc.description.fil
Fil: Francisca, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Construcciones Civiles; Argentina
dc.description.fil
Fil: Pettinari, Gisela Roxana. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina
dc.description.fil
Fil: Roehl, K.e.. Universitat Technische Darmstadt; Alemania
dc.journal.title
Environmental Engineering And Management Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.30638/eemj.2016.276
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.eemj.icpm.tuiasi.ro/pdfs/vol15/no11/21_115_Musso_12.pdf
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