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
| id |
UNACIONAL2_98adcddd52390b54152c6cbbaa8ce5b4 |
|---|---|
| oai_identifier_str |
oai:repositorio.unal.edu.co:unal/60551 |
| network_acronym_str |
UNACIONAL2 |
| network_name_str |
Universidad Nacional de Colombia |
| repository_id_str |
|
| spelling |
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. |
| publishDate |
2016 |
| dc.date.issued.spa.fl_str_mv |
2016-03-01 |
| dc.date.accessioned.spa.fl_str_mv |
2019-07-02T18:34:52Z |
| dc.date.available.spa.fl_str_mv |
2019-07-02T18:34:52Z |
| dc.type.spa.fl_str_mv |
Artículo de revista |
| dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
| dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/article |
| dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| dc.type.coar.spa.fl_str_mv |
http://purl.org/coar/resource_type/c_6501 |
| dc.type.coarversion.spa.fl_str_mv |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.content.spa.fl_str_mv |
Text |
| dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/ART |
| format |
http://purl.org/coar/resource_type/c_6501 |
| status_str |
publishedVersion |
| dc.identifier.issn.spa.fl_str_mv |
ISSN: 2346-2183 |
| dc.identifier.uri.none.fl_str_mv |
https://repositorio.unal.edu.co/handle/unal/60551 |
| dc.identifier.eprints.spa.fl_str_mv |
http://bdigital.unal.edu.co/58883/ |
| identifier_str_mv |
ISSN: 2346-2183 |
| url |
https://repositorio.unal.edu.co/handle/unal/60551 http://bdigital.unal.edu.co/58883/ |
| dc.language.iso.spa.fl_str_mv |
spa |
| language |
spa |
| dc.relation.spa.fl_str_mv |
https://revistas.unal.edu.co/index.php/dyna/article/view/49249 |
| dc.relation.ispartof.spa.fl_str_mv |
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 |
| dc.rights.spa.fl_str_mv |
Derechos reservados - Universidad Nacional de Colombia |
| dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
| dc.rights.license.spa.fl_str_mv |
Atribución-NoComercial 4.0 Internacional |
| dc.rights.uri.spa.fl_str_mv |
http://creativecommons.org/licenses/by-nc/4.0/ |
| dc.rights.accessrights.spa.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Atribución-NoComercial 4.0 Internacional Derechos reservados - Universidad Nacional de Colombia http://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.mimetype.spa.fl_str_mv |
application/pdf |
| dc.publisher.spa.fl_str_mv |
Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas. |
| institution |
Universidad Nacional de Colombia |
| bitstream.url.fl_str_mv |
https://repositorio.unal.edu.co/bitstream/unal/60551/1/49249-290082-1-PB.pdf https://repositorio.unal.edu.co/bitstream/unal/60551/2/49249-290082-1-PB.pdf.jpg |
| bitstream.checksum.fl_str_mv |
4900f229857658a5cda143cca3f52255 e7ac43b4b4c93051b38597904d2acba6 |
| bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
| repository.name.fl_str_mv |
Repositorio Institucional Universidad Nacional de Colombia |
| repository.mail.fl_str_mv |
repositorio_nal@unal.edu.co |
| _version_ |
1812169061192171520 |