Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization
The present article studies the influence of two pozzolanic additions, metakaolin (MK) and silica fume (SF), and the water/binder ratio (w/b) on the electrochemical re-alkalization (ER) of reinforced mortars as a technique to prevent reinforcement corrosion in carbonated concrete. Mixtures with a 10...
- Autores:
-
Aguirre, Ana Maria
Mejía de Gutiérrez, Ruby
Restucci, Jean Paul
Alvarado Bueno, Alexander
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2016
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/60551
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/60551
http://bdigital.unal.edu.co/58883/
- Palabra clave:
- 62 Ingeniería y operaciones afines / Engineering
Carbonation
Electrochemical Re-alkalization
Blended Mortars
Silica Fume
Metakaolin
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Aguirre, Ana Mariaacb45840-2800-4fb7-9a3c-a187bd4fc297300Mejía de Gutiérrez, Ruby13372ac4-6595-488f-a30a-25481a1338eb300Restucci, Jean Paul752c78d9-54bc-421d-8323-55d26770c2b4300Alvarado Bueno, Alexanderf168e1c2-839f-4223-baac-3ec316cdd9783002019-07-02T18:34:52Z2019-07-02T18:34:52Z2016-03-01ISSN: 2346-2183https://repositorio.unal.edu.co/handle/unal/60551http://bdigital.unal.edu.co/58883/The present article studies the influence of two pozzolanic additions, metakaolin (MK) and silica fume (SF), and the water/binder ratio (w/b) on the electrochemical re-alkalization (ER) of reinforced mortars as a technique to prevent reinforcement corrosion in carbonated concrete. Mixtures with a 10% (by weight) addition as a replacement for cement at w/b ratios of 0.45 and 0.65 were prepared. Test specimens were exposed to carbonation in a chamber under controlled conditions (1% CO2, 65%RH, and 25°C), until reaching two levels of carbonation (50% and 100%). ER was applied for a period of 15 days using sodium carbonate as the electrolyte and a current density of 1 A/m2. From the evaluated additions, MK is highlighted, which generated a resistance increase of 53.51% relative to that of the reference mixture and contributes to improvements of durability properties. Regarding the ER technique, the specimens with greater w/b ratios and partial carbonation were more effective.application/pdfspaUniversidad Nacional de Colombia (Sede Medellín). Facultad de Minas.https://revistas.unal.edu.co/index.php/dyna/article/view/49249Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaAguirre, Ana Maria and Mejía de Gutiérrez, Ruby and Restucci, Jean Paul and Alvarado Bueno, Alexander (2016) Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization. DYNA, 83 (196). pp. 93-99. ISSN 2346-218362 Ingeniería y operaciones afines / EngineeringCarbonationElectrochemical Re-alkalizationBlended MortarsSilica FumeMetakaolinStudy of a repair technique in carbonated blended mortars: Electrochemical re-alkalizationArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINAL49249-290082-1-PB.pdfapplication/pdf1532728https://repositorio.unal.edu.co/bitstream/unal/60551/1/49249-290082-1-PB.pdf4900f229857658a5cda143cca3f52255MD51THUMBNAIL49249-290082-1-PB.pdf.jpg49249-290082-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9309https://repositorio.unal.edu.co/bitstream/unal/60551/2/49249-290082-1-PB.pdf.jpge7ac43b4b4c93051b38597904d2acba6MD52unal/60551oai:repositorio.unal.edu.co:unal/605512023-04-07 23:04:49.82Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co |
| dc.title.spa.fl_str_mv |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization |
| title |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization |
| spellingShingle |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization 62 Ingeniería y operaciones afines / Engineering Carbonation Electrochemical Re-alkalization Blended Mortars Silica Fume Metakaolin |
| title_short |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization |
| title_full |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization |
| title_fullStr |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization |
| title_full_unstemmed |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization |
| title_sort |
Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization |
| dc.creator.fl_str_mv |
Aguirre, Ana Maria Mejía de Gutiérrez, Ruby Restucci, Jean Paul Alvarado Bueno, Alexander |
| dc.contributor.author.spa.fl_str_mv |
Aguirre, Ana Maria Mejía de Gutiérrez, Ruby Restucci, Jean Paul Alvarado Bueno, Alexander |
| dc.subject.ddc.spa.fl_str_mv |
62 Ingeniería y operaciones afines / Engineering |
| topic |
62 Ingeniería y operaciones afines / Engineering Carbonation Electrochemical Re-alkalization Blended Mortars Silica Fume Metakaolin |
| dc.subject.proposal.spa.fl_str_mv |
Carbonation Electrochemical Re-alkalization Blended Mortars Silica Fume Metakaolin |
| description |
The present article studies the influence of two pozzolanic additions, metakaolin (MK) and silica fume (SF), and the water/binder ratio (w/b) on the electrochemical re-alkalization (ER) of reinforced mortars as a technique to prevent reinforcement corrosion in carbonated concrete. Mixtures with a 10% (by weight) addition as a replacement for cement at w/b ratios of 0.45 and 0.65 were prepared. Test specimens were exposed to carbonation in a chamber under controlled conditions (1% CO2, 65%RH, and 25°C), until reaching two levels of carbonation (50% and 100%). ER was applied for a period of 15 days using sodium carbonate as the electrolyte and a current density of 1 A/m2. From the evaluated additions, MK is highlighted, which generated a resistance increase of 53.51% relative to that of the reference mixture and contributes to improvements of durability properties. Regarding the ER technique, the specimens with greater w/b ratios and partial carbonation were more effective. |
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2016 |
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2016-03-01 |
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2019-07-02T18:34:52Z |
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2019-07-02T18:34:52Z |
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Artículo de revista |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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info:eu-repo/semantics/article |
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info:eu-repo/semantics/publishedVersion |
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http://purl.org/coar/resource_type/c_6501 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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Text |
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http://purl.org/redcol/resource_type/ART |
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http://purl.org/coar/resource_type/c_6501 |
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publishedVersion |
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ISSN: 2346-2183 |
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https://repositorio.unal.edu.co/handle/unal/60551 |
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http://bdigital.unal.edu.co/58883/ |
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ISSN: 2346-2183 |
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https://repositorio.unal.edu.co/handle/unal/60551 http://bdigital.unal.edu.co/58883/ |
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spa |
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spa |
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https://revistas.unal.edu.co/index.php/dyna/article/view/49249 |
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Universidad Nacional de Colombia Revistas electrónicas UN Dyna Dyna |
| dc.relation.references.spa.fl_str_mv |
Aguirre, Ana Maria and Mejía de Gutiérrez, Ruby and Restucci, Jean Paul and Alvarado Bueno, Alexander (2016) Study of a repair technique in carbonated blended mortars: Electrochemical re-alkalization. DYNA, 83 (196). pp. 93-99. ISSN 2346-2183 |
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Derechos reservados - Universidad Nacional de Colombia |
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http://purl.org/coar/access_right/c_abf2 |
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Atribución-NoComercial 4.0 Internacional |
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http://creativecommons.org/licenses/by-nc/4.0/ |
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info:eu-repo/semantics/openAccess |
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Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas. |
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