Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction

Autores
Locati, Francisco; Marfil, Silvina Andrea; Baldo, Edgardo Gaspar Agustín
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
It has been known for a long time that strained, microcrystalline or cryptocrystalline quartz-bearing aggregates may cause alkali-silica reactions in concrete. Studying the relationship between deformation processes and microstructural characteristics of rocks, the reason for this behaviour can be better understood. Orthogneisses from the metamorphic basement of the Sierra Chica, Córdoba (Argentina), which were locally and differentially deformed in ductile shear zones, were used to analyse such behaviour. Petrographic analyses, accelerated mortar bar tests (ASTM C 1260, 2005) and chemical test (ASTM C 289, 1994) were conducted. Furthermore, corrosion tests were performed on polished rock surfaces using 1. N NaOH solution. It was seen that the reactivity of the quartz-bearing mylonites increased by ~. 30% with respect to the non-mylonitised sample due to the increment in the strained quartz content and specially with the extended subgrain development. The mylonitised rock affected by superimposed cataclasis and the development of pseudotachylytic veins incremented its reactivity by ~. 97% with respect to the non-mylonitised sample due to the combined effects of subgrain formation, grain size reduction and the formation of glassy material. It was also the only sample that showed significant differences in surface corrosion confirming the high reactivity of the rock. These results agree with expansion values measured on the accelerated mortar bar test and with silica leached in the chemical test. We believe that the simultaneous use of different tools to evaluate the potential alkali reactivity of the rocks in concrete is a good strategy rather than the use of isolated tools, which could lead to confusing interpretations of the process and therefore result in erroneous decisions.
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: Marfil, Silvina Andrea. Universidad Nacional del Sur; Argentina
Fil: Baldo, Edgardo Gaspar Agustín. 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
Materia
Alkali-Aggregatereaction
Concrete
Expansion
Microstructure
Petrography
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:11336/54550
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/54550
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reactionLocati, FranciscoMarfil, Silvina AndreaBaldo, Edgardo Gaspar AgustínAlkali-AggregatereactionConcreteExpansionMicrostructurePetrographyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1It has been known for a long time that strained, microcrystalline or cryptocrystalline quartz-bearing aggregates may cause alkali-silica reactions in concrete. Studying the relationship between deformation processes and microstructural characteristics of rocks, the reason for this behaviour can be better understood. Orthogneisses from the metamorphic basement of the Sierra Chica, Córdoba (Argentina), which were locally and differentially deformed in ductile shear zones, were used to analyse such behaviour. Petrographic analyses, accelerated mortar bar tests (ASTM C 1260, 2005) and chemical test (ASTM C 289, 1994) were conducted. Furthermore, corrosion tests were performed on polished rock surfaces using 1. N NaOH solution. It was seen that the reactivity of the quartz-bearing mylonites increased by ~. 30% with respect to the non-mylonitised sample due to the increment in the strained quartz content and specially with the extended subgrain development. The mylonitised rock affected by superimposed cataclasis and the development of pseudotachylytic veins incremented its reactivity by ~. 97% with respect to the non-mylonitised sample due to the combined effects of subgrain formation, grain size reduction and the formation of glassy material. It was also the only sample that showed significant differences in surface corrosion confirming the high reactivity of the rock. These results agree with expansion values measured on the accelerated mortar bar test and with silica leached in the chemical test. We believe that the simultaneous use of different tools to evaluate the potential alkali reactivity of the rocks in concrete is a good strategy rather than the use of isolated tools, which could lead to confusing interpretations of the process and therefore result in erroneous decisions.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: Marfil, Silvina Andrea. Universidad Nacional del Sur; ArgentinaFil: Baldo, Edgardo Gaspar Agustín. 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; ArgentinaElsevier Science2010-10info: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/11336/54550Locati, Francisco; Marfil, Silvina Andrea; Baldo, Edgardo Gaspar Agustín; Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction; Elsevier Science; Engineering Geology; 116; 1-2; 10-2010; 117-1280013-7952CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013795210001559info:eu-repo/semantics/altIdentifier/doi/10.1016/j.enggeo.2010.08.001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:46:32Zoai:ri.conicet.gov.ar:11336/54550instacron: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:34982025-10-15 14:46:32.969CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
title Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
spellingShingle Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
Locati, Francisco
Alkali-Aggregatereaction
Concrete
Expansion
Microstructure
Petrography
title_short Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
title_full Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
title_fullStr Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
title_full_unstemmed Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
title_sort Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction
dc.creator.none.fl_str_mv Locati, Francisco
Marfil, Silvina Andrea
Baldo, Edgardo Gaspar Agustín
author Locati, Francisco
author_facet Locati, Francisco
Marfil, Silvina Andrea
Baldo, Edgardo Gaspar Agustín
author_role author
author2 Marfil, Silvina Andrea
Baldo, Edgardo Gaspar Agustín
author2_role author
author
dc.subject.none.fl_str_mv Alkali-Aggregatereaction
Concrete
Expansion
Microstructure
Petrography
topic Alkali-Aggregatereaction
Concrete
Expansion
Microstructure
Petrography
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv It has been known for a long time that strained, microcrystalline or cryptocrystalline quartz-bearing aggregates may cause alkali-silica reactions in concrete. Studying the relationship between deformation processes and microstructural characteristics of rocks, the reason for this behaviour can be better understood. Orthogneisses from the metamorphic basement of the Sierra Chica, Córdoba (Argentina), which were locally and differentially deformed in ductile shear zones, were used to analyse such behaviour. Petrographic analyses, accelerated mortar bar tests (ASTM C 1260, 2005) and chemical test (ASTM C 289, 1994) were conducted. Furthermore, corrosion tests were performed on polished rock surfaces using 1. N NaOH solution. It was seen that the reactivity of the quartz-bearing mylonites increased by ~. 30% with respect to the non-mylonitised sample due to the increment in the strained quartz content and specially with the extended subgrain development. The mylonitised rock affected by superimposed cataclasis and the development of pseudotachylytic veins incremented its reactivity by ~. 97% with respect to the non-mylonitised sample due to the combined effects of subgrain formation, grain size reduction and the formation of glassy material. It was also the only sample that showed significant differences in surface corrosion confirming the high reactivity of the rock. These results agree with expansion values measured on the accelerated mortar bar test and with silica leached in the chemical test. We believe that the simultaneous use of different tools to evaluate the potential alkali reactivity of the rocks in concrete is a good strategy rather than the use of isolated tools, which could lead to confusing interpretations of the process and therefore result in erroneous decisions.
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: Marfil, Silvina Andrea. Universidad Nacional del Sur; Argentina
Fil: Baldo, Edgardo Gaspar Agustín. 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
description It has been known for a long time that strained, microcrystalline or cryptocrystalline quartz-bearing aggregates may cause alkali-silica reactions in concrete. Studying the relationship between deformation processes and microstructural characteristics of rocks, the reason for this behaviour can be better understood. Orthogneisses from the metamorphic basement of the Sierra Chica, Córdoba (Argentina), which were locally and differentially deformed in ductile shear zones, were used to analyse such behaviour. Petrographic analyses, accelerated mortar bar tests (ASTM C 1260, 2005) and chemical test (ASTM C 289, 1994) were conducted. Furthermore, corrosion tests were performed on polished rock surfaces using 1. N NaOH solution. It was seen that the reactivity of the quartz-bearing mylonites increased by ~. 30% with respect to the non-mylonitised sample due to the increment in the strained quartz content and specially with the extended subgrain development. The mylonitised rock affected by superimposed cataclasis and the development of pseudotachylytic veins incremented its reactivity by ~. 97% with respect to the non-mylonitised sample due to the combined effects of subgrain formation, grain size reduction and the formation of glassy material. It was also the only sample that showed significant differences in surface corrosion confirming the high reactivity of the rock. These results agree with expansion values measured on the accelerated mortar bar test and with silica leached in the chemical test. We believe that the simultaneous use of different tools to evaluate the potential alkali reactivity of the rocks in concrete is a good strategy rather than the use of isolated tools, which could lead to confusing interpretations of the process and therefore result in erroneous decisions.
publishDate 2010
dc.date.none.fl_str_mv 2010-10
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/11336/54550
Locati, Francisco; Marfil, Silvina Andrea; Baldo, Edgardo Gaspar Agustín; Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction; Elsevier Science; Engineering Geology; 116; 1-2; 10-2010; 117-128
0013-7952
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54550
identifier_str_mv Locati, Francisco; Marfil, Silvina Andrea; Baldo, Edgardo Gaspar Agustín; Effect of ductile deformation of quartz-bearing rocks on the alkali-silica reaction; Elsevier Science; Engineering Geology; 116; 1-2; 10-2010; 117-128
0013-7952
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013795210001559
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.enggeo.2010.08.001
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 Science
publisher.none.fl_str_mv Elsevier Science
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_ 1846082978589966336
score 13.221938

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