Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200017 |
Resumo: | The aim of the present research work was the evaluation of the physicochemical and microstructural properties of two ultrafine cements, produced by dry grinding of a commercial CEM I 42.5N cement. The effect of grinding on particle size distribution was determined by laser scattering analyzer. All cements were tested for initial and final setting times, consistency of standard paste, soundness, flow of normal mortar and compressive strengths after 1, 2, 7 and 28 days. The effect of the fineness on the heat of hydration was also investigated. The hydration products were determined by X-ray diffraction analysis and by Fourier transform infrared spectroscopy, at 1, 2, 7 and 28 days. The microstructure of the hardened cement pastes and their morphological characteristics were examined by scanning electron microscopy. Porosity and pore size distribution were evaluated by mercury intrusion porosimetry. The effects of greater fineness on compressive strengths were evident principally at early ages. After the first 24 hours of hydration, the compressive strength of the finest cements was about 3 times higher (over 48 MPa) than the corresponding of CEM I 42.5N (15.1 MPa). |
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Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterizationultrafine cementheat of hydrationphysical & mechanical propertiesmicrostructureThe aim of the present research work was the evaluation of the physicochemical and microstructural properties of two ultrafine cements, produced by dry grinding of a commercial CEM I 42.5N cement. The effect of grinding on particle size distribution was determined by laser scattering analyzer. All cements were tested for initial and final setting times, consistency of standard paste, soundness, flow of normal mortar and compressive strengths after 1, 2, 7 and 28 days. The effect of the fineness on the heat of hydration was also investigated. The hydration products were determined by X-ray diffraction analysis and by Fourier transform infrared spectroscopy, at 1, 2, 7 and 28 days. The microstructure of the hardened cement pastes and their morphological characteristics were examined by scanning electron microscopy. Porosity and pore size distribution were evaluated by mercury intrusion porosimetry. The effects of greater fineness on compressive strengths were evident principally at early ages. After the first 24 hours of hydration, the compressive strength of the finest cements was about 3 times higher (over 48 MPa) than the corresponding of CEM I 42.5N (15.1 MPa).ABM, ABC, ABPol2013-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200017Materials Research v.16 n.2 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000014info:eu-repo/semantics/openAccessKontoleontos,FoteiniTsakiridis,PetrosMarinos,ApostolosKatsiotis,NikolaosKaloidas,VasileiosKatsioti,Margaritaeng2013-03-19T00:00:00Zoai:scielo:S1516-14392013000200017Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-03-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization |
title |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization |
spellingShingle |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization Kontoleontos,Foteini ultrafine cement heat of hydration physical & mechanical properties microstructure |
title_short |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization |
title_full |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization |
title_fullStr |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization |
title_full_unstemmed |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization |
title_sort |
Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization |
author |
Kontoleontos,Foteini |
author_facet |
Kontoleontos,Foteini Tsakiridis,Petros Marinos,Apostolos Katsiotis,Nikolaos Kaloidas,Vasileios Katsioti,Margarita |
author_role |
author |
author2 |
Tsakiridis,Petros Marinos,Apostolos Katsiotis,Nikolaos Kaloidas,Vasileios Katsioti,Margarita |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Kontoleontos,Foteini Tsakiridis,Petros Marinos,Apostolos Katsiotis,Nikolaos Kaloidas,Vasileios Katsioti,Margarita |
dc.subject.por.fl_str_mv |
ultrafine cement heat of hydration physical & mechanical properties microstructure |
topic |
ultrafine cement heat of hydration physical & mechanical properties microstructure |
description |
The aim of the present research work was the evaluation of the physicochemical and microstructural properties of two ultrafine cements, produced by dry grinding of a commercial CEM I 42.5N cement. The effect of grinding on particle size distribution was determined by laser scattering analyzer. All cements were tested for initial and final setting times, consistency of standard paste, soundness, flow of normal mortar and compressive strengths after 1, 2, 7 and 28 days. The effect of the fineness on the heat of hydration was also investigated. The hydration products were determined by X-ray diffraction analysis and by Fourier transform infrared spectroscopy, at 1, 2, 7 and 28 days. The microstructure of the hardened cement pastes and their morphological characteristics were examined by scanning electron microscopy. Porosity and pore size distribution were evaluated by mercury intrusion porosimetry. The effects of greater fineness on compressive strengths were evident principally at early ages. After the first 24 hours of hydration, the compressive strength of the finest cements was about 3 times higher (over 48 MPa) than the corresponding of CEM I 42.5N (15.1 MPa). |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200017 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200017 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392013005000014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.16 n.2 2013 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212662825189376 |