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dc.contributor.author
Milanesi, Carlos A.
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Marfil, Silvina Andrea
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Locati, Francisco
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Benito, Damián Ezequiel
dc.date.available
2021-09-24T13:28:22Z
dc.date.issued
2020-08
dc.identifier.citation
Milanesi, Carlos A.; Marfil, Silvina Andrea; Locati, Francisco; Benito, Damián Ezequiel; Effects of different alkaline solutions on the expansivity of rock prisms of an alkali-reactive dolostone from Valcheta (Río Negro, Argentina); Pergamon-Elsevier Science Ltd; Cement and Concrete Research; 134; 8-2020; 1-42; 106092
dc.identifier.issn
0008-8846
dc.identifier.uri
http://hdl.handle.net/11336/141461
dc.description.abstract
A fine-grained argillaceous reactive dolostone was identified in Argentina. In alkaline conditions, a clear dedolomitization reaction occurred, accompanied by a deleterious expansive process. The purpose of this paper is to investigate the correlation between the rock prism expansion and the reaction progress. Rock expansion (in high and low porosity samples) was evaluated by a modified ASTM C586 test method, using NaOH, KOH, LiOH, and Ca(OH)2 solutions. The reactivity was verified in concrete mixtures applying a method similar to ASTM C1293, using the dolostone as coarse aggregate. To evaluate the reaction progress during the tests, mineralogical changes in the rock were quantified using XRD (Rietveld). In addition, the mercury porosimetry test was performed to investigate the changes in the rock pore structure. Finally, chemical analyses of the contact solutions (CO3 2−, OH−, Na+, K+, Li+) were done. Considering the results obtained, some controversial aspects of the theories proposed in the literature are analyzed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ALKALI‑CARBONATE REACTION
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CALCIUM
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CARBONATE ION (CO3 2−)
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DEDOLOMITIZATION
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EXPANSION MECHANISM
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LITHIUM
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Ingeniería Civil
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Ingeniería Civil
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Effects of different alkaline solutions on the expansivity of rock prisms of an alkali-reactive dolostone from Valcheta (Río Negro, Argentina)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-06T15:15:09Z
dc.journal.volume
134
dc.journal.pagination
1-42; 106092
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Milanesi, Carlos A.. Cementos Avellaneda; Argentina
dc.description.fil
Fil: Marfil, Silvina Andrea. Universidad Nacional del Sur. Departamento de Geología; Argentina
dc.description.fil
Fil: Locati, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
dc.description.fil
Fil: Benito, Damián Ezequiel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; Argentina
dc.journal.title
Cement and Concrete Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0008884619316941
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cemconres.2020.106092
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