Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study

Autores
Locati, Francisco; Falcone, Ruben Dario; Marfil, Silvina Andrea
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Marbles from the province of Córdoba (Argentina) have been used as aggregates in concrete; however, there is little information about their potential reactivity and interaction with the cement paste. Recently, the alkali-carbonate reactivity of dolomitic to calcitic marbles from this province was determined by standardized methods (ASTM C1293, ASTM C586, CSA A23.2-26A) and a modification of the Chinese Accelerated Mortar Bar Method (M-CAMBT) using a single aggregate size fraction (2.5–5.0 mm). Although all samples behaved as non-reactive some expansion was recorded, especially in the M-CAMBT method. In this work microstructural and chemical studies were carried out by stereomicroscopy, polarizing microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) on mortar bars tested by the M-CAMBT method. Dedolomitization was detected in all dolomitic and calc-dolomitic marbles being more accentuated in the samples with more dolomite. This process is characterized by the development of different zones in the cement–aggregate interface that differ in texture and chemical composition and are similar to the zones described by other authors in dolomitic limestones typically associated with the so-called alkali–carbonate reaction. Therefore, the presence and distribution of dedolomitization appears not to be related to the texture of the aggregates but to the amount of dolomite in the rock. The low expansions recorded were associated with relict strained quartz and possibly with fine-grained phlogopite in the matrix of the rocks, which have acted as silica sources for the development of secondary silicates of variable composition (±Ca ± Na ± K ± Mg ± Al) and microfissures as a result of the alkali–silica reaction rather than the non-expansive dedolomitization process.
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
Fil: Falcone, Ruben Dario. Laboratorio de Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Marfil, Silvina Andrea. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Materia
Marble
Alkali-Carbonate Reaction
Dedolomitization
Mg–Si–Al Phase
Carbonate Halo
Alkali-Silica Reaction
Asr Gel
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/32119
Acceder
id CONICETDig_6341ee553b6e4f21c1e62a8d16076195
oai_identifier_str oai:ri.conicet.gov.ar:11336/32119
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical studyLocati, FranciscoFalcone, Ruben DarioMarfil, Silvina AndreaMarbleAlkali-Carbonate ReactionDedolomitizationMg–Si–Al PhaseCarbonate HaloAlkali-Silica ReactionAsr Gelhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Marbles from the province of Córdoba (Argentina) have been used as aggregates in concrete; however, there is little information about their potential reactivity and interaction with the cement paste. Recently, the alkali-carbonate reactivity of dolomitic to calcitic marbles from this province was determined by standardized methods (ASTM C1293, ASTM C586, CSA A23.2-26A) and a modification of the Chinese Accelerated Mortar Bar Method (M-CAMBT) using a single aggregate size fraction (2.5–5.0 mm). Although all samples behaved as non-reactive some expansion was recorded, especially in the M-CAMBT method. In this work microstructural and chemical studies were carried out by stereomicroscopy, polarizing microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) on mortar bars tested by the M-CAMBT method. Dedolomitization was detected in all dolomitic and calc-dolomitic marbles being more accentuated in the samples with more dolomite. This process is characterized by the development of different zones in the cement–aggregate interface that differ in texture and chemical composition and are similar to the zones described by other authors in dolomitic limestones typically associated with the so-called alkali–carbonate reaction. Therefore, the presence and distribution of dedolomitization appears not to be related to the texture of the aggregates but to the amount of dolomite in the rock. The low expansions recorded were associated with relict strained quartz and possibly with fine-grained phlogopite in the matrix of the rocks, which have acted as silica sources for the development of secondary silicates of variable composition (±Ca ± Na ± K ± Mg ± Al) and microfissures as a result of the alkali–silica reaction rather than the non-expansive dedolomitization process.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; ArgentinaFil: Falcone, Ruben Dario. Laboratorio de Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Marfil, Silvina Andrea. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaElsevier2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32119Marfil, Silvina Andrea; Falcone, Ruben Dario; Locati, Francisco; Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study; Elsevier; Construction And Building Materials; 58; 2-2014; 171-1810950-0618CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.conbuildmat.2014.02.019info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0950061814001743info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:06Zoai:ri.conicet.gov.ar:11336/32119instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:50:06.326CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
title Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
spellingShingle Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
Locati, Francisco
Marble
Alkali-Carbonate Reaction
Dedolomitization
Mg–Si–Al Phase
Carbonate Halo
Alkali-Silica Reaction
Asr Gel
title_short Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
title_full Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
title_fullStr Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
title_full_unstemmed Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
title_sort Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study
dc.creator.none.fl_str_mv Locati, Francisco
Falcone, Ruben Dario
Marfil, Silvina Andrea
author Locati, Francisco
author_facet Locati, Francisco
Falcone, Ruben Dario
Marfil, Silvina Andrea
author_role author
author2 Falcone, Ruben Dario
Marfil, Silvina Andrea
author2_role author
author
dc.subject.none.fl_str_mv Marble
Alkali-Carbonate Reaction
Dedolomitization
Mg–Si–Al Phase
Carbonate Halo
Alkali-Silica Reaction
Asr Gel
topic Marble
Alkali-Carbonate Reaction
Dedolomitization
Mg–Si–Al Phase
Carbonate Halo
Alkali-Silica Reaction
Asr Gel
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Marbles from the province of Córdoba (Argentina) have been used as aggregates in concrete; however, there is little information about their potential reactivity and interaction with the cement paste. Recently, the alkali-carbonate reactivity of dolomitic to calcitic marbles from this province was determined by standardized methods (ASTM C1293, ASTM C586, CSA A23.2-26A) and a modification of the Chinese Accelerated Mortar Bar Method (M-CAMBT) using a single aggregate size fraction (2.5–5.0 mm). Although all samples behaved as non-reactive some expansion was recorded, especially in the M-CAMBT method. In this work microstructural and chemical studies were carried out by stereomicroscopy, polarizing microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) on mortar bars tested by the M-CAMBT method. Dedolomitization was detected in all dolomitic and calc-dolomitic marbles being more accentuated in the samples with more dolomite. This process is characterized by the development of different zones in the cement–aggregate interface that differ in texture and chemical composition and are similar to the zones described by other authors in dolomitic limestones typically associated with the so-called alkali–carbonate reaction. Therefore, the presence and distribution of dedolomitization appears not to be related to the texture of the aggregates but to the amount of dolomite in the rock. The low expansions recorded were associated with relict strained quartz and possibly with fine-grained phlogopite in the matrix of the rocks, which have acted as silica sources for the development of secondary silicates of variable composition (±Ca ± Na ± K ± Mg ± Al) and microfissures as a result of the alkali–silica reaction rather than the non-expansive dedolomitization process.
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
Fil: Falcone, Ruben Dario. Laboratorio de Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Marfil, Silvina Andrea. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
description Marbles from the province of Córdoba (Argentina) have been used as aggregates in concrete; however, there is little information about their potential reactivity and interaction with the cement paste. Recently, the alkali-carbonate reactivity of dolomitic to calcitic marbles from this province was determined by standardized methods (ASTM C1293, ASTM C586, CSA A23.2-26A) and a modification of the Chinese Accelerated Mortar Bar Method (M-CAMBT) using a single aggregate size fraction (2.5–5.0 mm). Although all samples behaved as non-reactive some expansion was recorded, especially in the M-CAMBT method. In this work microstructural and chemical studies were carried out by stereomicroscopy, polarizing microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) on mortar bars tested by the M-CAMBT method. Dedolomitization was detected in all dolomitic and calc-dolomitic marbles being more accentuated in the samples with more dolomite. This process is characterized by the development of different zones in the cement–aggregate interface that differ in texture and chemical composition and are similar to the zones described by other authors in dolomitic limestones typically associated with the so-called alkali–carbonate reaction. Therefore, the presence and distribution of dedolomitization appears not to be related to the texture of the aggregates but to the amount of dolomite in the rock. The low expansions recorded were associated with relict strained quartz and possibly with fine-grained phlogopite in the matrix of the rocks, which have acted as silica sources for the development of secondary silicates of variable composition (±Ca ± Na ± K ± Mg ± Al) and microfissures as a result of the alkali–silica reaction rather than the non-expansive dedolomitization process.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/32119
Marfil, Silvina Andrea; Falcone, Ruben Dario; Locati, Francisco; Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study; Elsevier; Construction And Building Materials; 58; 2-2014; 171-181
0950-0618
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32119
identifier_str_mv Marfil, Silvina Andrea; Falcone, Ruben Dario; Locati, Francisco; Dedolomitization and alkali-silica reactions in low-expansive marbles from the province of Córdoba, Argentina. A microstructural and chemical study; Elsevier; Construction And Building Materials; 58; 2-2014; 171-181
0950-0618
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.conbuildmat.2014.02.019
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0950061814001743
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269013295497216
score 13.13397

Publicaciones similares