Effect of cationic polyelectrolytes addition in cement cohesion

Here is studied the variation in cohesion of cement main phase (C-S-H) as a result of cationic polyelectrolytes addition (quaternary amines spermine and norspermidine). Cohesion study was carried out by molecular simulation techniques (Monte Carlo) using a primitive model in a canonical ensemble (NV...

Full description

Autores:
Zuluaga-Hernández, Edison Albert
Hoyos, Bibian A.
Tipo de recurso:
Article of journal
Fecha de publicación:
2014
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/52526
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/52526
http://bdigital.unal.edu.co/46872/
Palabra clave:
cement cohesion
molecular simulation
cationic polyelectrolytes
osmotic pressure
primitive model.
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openAccess
License
Atribución-NoComercial 4.0 Internacional
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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_abf2Zuluaga-Hernández, Edison Albertf042ea83-a9a4-4248-966e-eddbbca67c1a300Hoyos, Bibian A.dd6caf96-5ce4-49db-a5c9-c9d775584e6d3002019-06-29T14:38:01Z2019-06-29T14:38:01Z2014-12-16https://repositorio.unal.edu.co/handle/unal/52526http://bdigital.unal.edu.co/46872/Here is studied the variation in cohesion of cement main phase (C-S-H) as a result of cationic polyelectrolytes addition (quaternary amines spermine and norspermidine). Cohesion study was carried out by molecular simulation techniques (Monte Carlo) using a primitive model in a canonical ensemble (NVT). The proposed model takes into account the influence of ionic size of each particle and the addition of polyelectrolytes with different charge number and separation. The results obtained show that electrostatic interactions are responsible for the cohesion of the hardened cement. It was found that in absence of cationic polyelectrolytes, cohesion is lost when the C-S-H lamellae are at separations larger than 1 nm. Adding cationic polyelectrolytes generates a distribution of hydroxide ions around the polyelectrolyte charges, facilitates the distribution of calcium and sodium ions in the entire space between C-S-H surfaces; this allows the cohesive forces exist at greater distances of separation between the surfaces.application/pdfspaUniversidad Nacional de Colombia Sede Medellínhttp://revistas.unal.edu.co/index.php/dyna/article/view/41834Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaDyna; Vol. 81, núm. 188 (2014); 222-228 DYNA; Vol. 81, núm. 188 (2014); 222-228 2346-2183 0012-7353Zuluaga-Hernández, Edison Albert and Hoyos, Bibian A. (2014) Effect of cationic polyelectrolytes addition in cement cohesion. Dyna; Vol. 81, núm. 188 (2014); 222-228 DYNA; Vol. 81, núm. 188 (2014); 222-228 2346-2183 0012-7353 .Effect of cationic polyelectrolytes addition in cement cohesionArtículo 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/ARTcement cohesionmolecular simulationcationic polyelectrolytesosmotic pressureprimitive model.ORIGINAL41834-234168-1-PB.pdfapplication/pdf993083https://repositorio.unal.edu.co/bitstream/unal/52526/1/41834-234168-1-PB.pdff2a33a6733f7ce22b27995f133e13672MD5141834-190782-1-SP.pdfapplication/pdf53472https://repositorio.unal.edu.co/bitstream/unal/52526/2/41834-190782-1-SP.pdf3ec65407e700855b20bcb4d9e43c8125MD52THUMBNAIL41834-234168-1-PB.pdf.jpg41834-234168-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9475https://repositorio.unal.edu.co/bitstream/unal/52526/3/41834-234168-1-PB.pdf.jpg4bfa308a48ca05fbcad95098f544ea46MD5341834-190782-1-SP.pdf.jpg41834-190782-1-SP.pdf.jpgGenerated Thumbnailimage/jpeg7277https://repositorio.unal.edu.co/bitstream/unal/52526/4/41834-190782-1-SP.pdf.jpgb507477b5ebd809f9377bc703b745b3fMD54unal/52526oai:repositorio.unal.edu.co:unal/525262024-03-02 23:08:30.801Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Effect of cationic polyelectrolytes addition in cement cohesion
title Effect of cationic polyelectrolytes addition in cement cohesion
spellingShingle Effect of cationic polyelectrolytes addition in cement cohesion
cement cohesion
molecular simulation
cationic polyelectrolytes
osmotic pressure
primitive model.
title_short Effect of cationic polyelectrolytes addition in cement cohesion
title_full Effect of cationic polyelectrolytes addition in cement cohesion
title_fullStr Effect of cationic polyelectrolytes addition in cement cohesion
title_full_unstemmed Effect of cationic polyelectrolytes addition in cement cohesion
title_sort Effect of cationic polyelectrolytes addition in cement cohesion
dc.creator.fl_str_mv Zuluaga-Hernández, Edison Albert
Hoyos, Bibian A.
dc.contributor.author.spa.fl_str_mv Zuluaga-Hernández, Edison Albert
Hoyos, Bibian A.
dc.subject.proposal.spa.fl_str_mv cement cohesion
molecular simulation
cationic polyelectrolytes
osmotic pressure
primitive model.
topic cement cohesion
molecular simulation
cationic polyelectrolytes
osmotic pressure
primitive model.
description Here is studied the variation in cohesion of cement main phase (C-S-H) as a result of cationic polyelectrolytes addition (quaternary amines spermine and norspermidine). Cohesion study was carried out by molecular simulation techniques (Monte Carlo) using a primitive model in a canonical ensemble (NVT). The proposed model takes into account the influence of ionic size of each particle and the addition of polyelectrolytes with different charge number and separation. The results obtained show that electrostatic interactions are responsible for the cohesion of the hardened cement. It was found that in absence of cationic polyelectrolytes, cohesion is lost when the C-S-H lamellae are at separations larger than 1 nm. Adding cationic polyelectrolytes generates a distribution of hydroxide ions around the polyelectrolyte charges, facilitates the distribution of calcium and sodium ions in the entire space between C-S-H surfaces; this allows the cohesive forces exist at greater distances of separation between the surfaces.
publishDate 2014
dc.date.issued.spa.fl_str_mv 2014-12-16
dc.date.accessioned.spa.fl_str_mv 2019-06-29T14:38:01Z
dc.date.available.spa.fl_str_mv 2019-06-29T14:38:01Z
dc.type.spa.fl_str_mv Artículo de revista
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url https://repositorio.unal.edu.co/handle/unal/52526
http://bdigital.unal.edu.co/46872/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/dyna/article/view/41834
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Dyna
Dyna
dc.relation.ispartofseries.none.fl_str_mv Dyna; Vol. 81, núm. 188 (2014); 222-228 DYNA; Vol. 81, núm. 188 (2014); 222-228 2346-2183 0012-7353
dc.relation.references.spa.fl_str_mv Zuluaga-Hernández, Edison Albert and Hoyos, Bibian A. (2014) Effect of cationic polyelectrolytes addition in cement cohesion. Dyna; Vol. 81, núm. 188 (2014); 222-228 DYNA; Vol. 81, núm. 188 (2014); 222-228 2346-2183 0012-7353 .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
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dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
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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
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dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia Sede Medellín
institution Universidad Nacional de Colombia
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