Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes

Abstract In this study, the plasticizer and the antifreeze were used. The concrete specimens (the reference concrete without an admixture, concrete with plasticizer, concrete with antifreeze and concrete with plasticizer+antifreeze) were exposed to elevated temperatures (200, 400, 550 and 700 ºC) an...

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Autores principales:	Kara,İlknur Bekem, Arslan,Metin
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2020
Materias:	concrete plasticizer antifreeze elevated temperatures cooling regimes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000300347
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spelling	oai:scielo:S0718-915X20200003003472021-02-16Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimesKara,İlknur BekemArslan,Metin concrete plasticizer antifreeze elevated temperatures cooling regimes Abstract In this study, the plasticizer and the antifreeze were used. The concrete specimens (the reference concrete without an admixture, concrete with plasticizer, concrete with antifreeze and concrete with plasticizer+antifreeze) were exposed to elevated temperatures (200, 400, 550 and 700 ºC) and cooling via air and water. Water absorption, ultrasonic pulse velocity and compressive strength tests were performed on the specimens. The concrete specimens were also analyzed using thermal gravimetric analysis and X-ray diffraction. The test results indicated that at the temperatures of 550 and 700 ºC and against both of the cooling regimes the plasticizer+antifreeze concrete showed a maximum strength loss. When the air cooled specimens were examined, the lowest strength loss was this obtained for reference concrete at 550 and 700 ºC. The lowest strength loss at these temperatures for the water cooled specimens was observed in the concrete with antifreeze. According to thermal gravimetric analysis, the weight loss rate slightly decreases after 700 °C. No portlandite peaks were observed in the concrete mixtures exposed to 700 ºC and the cooling regimes was when they were compared at with the control specimens exposed to 20 ºC in the X-ray diffraction analysis.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.19 n.3 20202020-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000300347en10.7764/rdlc.19.3.347
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	concrete plasticizer antifreeze elevated temperatures cooling regimes
spellingShingle	concrete plasticizer antifreeze elevated temperatures cooling regimes Kara,İlknur Bekem Arslan,Metin Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes
description	Abstract In this study, the plasticizer and the antifreeze were used. The concrete specimens (the reference concrete without an admixture, concrete with plasticizer, concrete with antifreeze and concrete with plasticizer+antifreeze) were exposed to elevated temperatures (200, 400, 550 and 700 ºC) and cooling via air and water. Water absorption, ultrasonic pulse velocity and compressive strength tests were performed on the specimens. The concrete specimens were also analyzed using thermal gravimetric analysis and X-ray diffraction. The test results indicated that at the temperatures of 550 and 700 ºC and against both of the cooling regimes the plasticizer+antifreeze concrete showed a maximum strength loss. When the air cooled specimens were examined, the lowest strength loss was this obtained for reference concrete at 550 and 700 ºC. The lowest strength loss at these temperatures for the water cooled specimens was observed in the concrete with antifreeze. According to thermal gravimetric analysis, the weight loss rate slightly decreases after 700 °C. No portlandite peaks were observed in the concrete mixtures exposed to 700 ºC and the cooling regimes was when they were compared at with the control specimens exposed to 20 ºC in the X-ray diffraction analysis.
author	Kara,İlknur Bekem Arslan,Metin
author_facet	Kara,İlknur Bekem Arslan,Metin
author_sort	Kara,İlknur Bekem
title	Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes
title_short	Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes
title_full	Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes
title_fullStr	Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes
title_full_unstemmed	Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes
title_sort	effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000300347
work_keys_str_mv	AT kara304lknurbekem effectsofplasticizerandantifreezeonconcreteatelevatedtemperaturesanddifferentcoolingregimes AT arslanmetin effectsofplasticizerandantifreezeonconcreteatelevatedtemperaturesanddifferentcoolingregimes
_version_	1714206310870810624

Effects of plasticizer and antifreeze on concrete at elevated temperatures and different cooling regimes

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