Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures

One of the factors of damage and destruction of concrete structures is fire. Concrete structures, in addition to having the proper mechanical characteristics, they must have durability properties to use their capacity over their lifetime. In this study, the effect of various volume fraction of steel...

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Autores principales:	Ramezan Ali Izadifard, Mehrdad abdi moghadam
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	"mechanical properties" "durability specifications" "steel fiber" "concrete" "high temperatures" Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/ba0d32a4327b4a3cbea3a62e3966d827
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spelling	oai:doaj.org-article:ba0d32a4327b4a3cbea3a62e3966d8272021-11-08T15:54:32ZEvaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures2476-39772538-261610.22065/jsce.2019.166490.1757https://doaj.org/article/ba0d32a4327b4a3cbea3a62e3966d8272021-04-01T00:00:00Zhttps://www.jsce.ir/article_86855_7668d771a0de3e8999388aebca1296c2.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616One of the factors of damage and destruction of concrete structures is fire. Concrete structures, in addition to having the proper mechanical characteristics, they must have durability properties to use their capacity over their lifetime. In this study, the effect of various volume fraction of steel fibers on improving the mechanical and durability properties of concrete at various temperatures has been investigated. Mechanical properties including compressive and tensile strength of concrete in the hot condition and the durability characteristics of the concrete after cooling, including surface water absorption, the penetration depth of water, electrical resistance and weight loss have been investigated. This study covers 0.25 and 0.50% volume fraction of steel fibers and temperatures of 28 to 800 ° C. The results show that the increase in compressive strength and tensile strength due to the age of the samples was higher in fiber concrete than non-fibrous concrete. It was also observed that the addition of 0.25 and 0.5% of steel fibers at the tested temperatures improved the compressive and tensile strength in the range of 10 to 27% and 8 to 200%, respectively. In addition, application of these fibers has reduced the sorptivity coefficient, the penetration depth of water, the electrical resistance of concrete and the weight loss of concrete owing to the high temperature. The results of this study showed that, at temperatures below 500 °C specimens containing 0.25% of steel fiber and 500 °C onwards, specimens containing 0.50% of steel fiber had the best performance on the improvement of the mechanical and durability properties of normal concrete at high temperatures.Ramezan Ali IzadifardMehrdad abdi moghadamIranian Society of Structrual Engineering (ISSE)article"mechanical properties""durability specifications""steel fiber""concrete""high temperatures"Bridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 2, Pp 159-176 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	"mechanical properties" "durability specifications" "steel fiber" "concrete" "high temperatures" Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	"mechanical properties" "durability specifications" "steel fiber" "concrete" "high temperatures" Bridge engineering TG1-470 Building construction TH1-9745 Ramezan Ali Izadifard Mehrdad abdi moghadam Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures
description	One of the factors of damage and destruction of concrete structures is fire. Concrete structures, in addition to having the proper mechanical characteristics, they must have durability properties to use their capacity over their lifetime. In this study, the effect of various volume fraction of steel fibers on improving the mechanical and durability properties of concrete at various temperatures has been investigated. Mechanical properties including compressive and tensile strength of concrete in the hot condition and the durability characteristics of the concrete after cooling, including surface water absorption, the penetration depth of water, electrical resistance and weight loss have been investigated. This study covers 0.25 and 0.50% volume fraction of steel fibers and temperatures of 28 to 800 ° C. The results show that the increase in compressive strength and tensile strength due to the age of the samples was higher in fiber concrete than non-fibrous concrete. It was also observed that the addition of 0.25 and 0.5% of steel fibers at the tested temperatures improved the compressive and tensile strength in the range of 10 to 27% and 8 to 200%, respectively. In addition, application of these fibers has reduced the sorptivity coefficient, the penetration depth of water, the electrical resistance of concrete and the weight loss of concrete owing to the high temperature. The results of this study showed that, at temperatures below 500 °C specimens containing 0.25% of steel fiber and 500 °C onwards, specimens containing 0.50% of steel fiber had the best performance on the improvement of the mechanical and durability properties of normal concrete at high temperatures.
format	article
author	Ramezan Ali Izadifard Mehrdad abdi moghadam
author_facet	Ramezan Ali Izadifard Mehrdad abdi moghadam
author_sort	Ramezan Ali Izadifard
title	Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures
title_short	Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures
title_full	Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures
title_fullStr	Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures
title_full_unstemmed	Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures
title_sort	evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/ba0d32a4327b4a3cbea3a62e3966d827
work_keys_str_mv	AT ramezanaliizadifard evaluationofvariouscontentofsteelfibersonimprovingthemechanicalanddurabilitypropertiesofconcreteathightemperatures AT mehrdadabdimoghadam evaluationofvariouscontentofsteelfibersonimprovingthemechanicalanddurabilitypropertiesofconcreteathightemperatures
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Evaluation of various content of steel fibers on improving the mechanical and durability properties of concrete at high temperatures

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