Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets

This paper presents the results of an axial pressure test on reinforced concrete columns made of high-strength concrete, which are encapsulated using a glass-fiber reinforced plastic pipes (GRP) and also with fiber reinforced polymer (FRP). The purpose of this study was to investigate the load beari...

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Autores principales:	Fathollah Sajedi, Mohsen Shafieinia, Vahid Razavi Toosi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	reinforced concrete column high-strength concrete grp casing cfrp sheet axial force ductility Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/a56cef30234740ccba7f9dcb06d21733
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spelling	oai:doaj.org-article:a56cef30234740ccba7f9dcb06d217332021-11-08T15:53:27ZInvestigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets2476-39772538-261610.22065/jsce.2018.138470.1602https://doaj.org/article/a56cef30234740ccba7f9dcb06d217332021-01-01T00:00:00Zhttps://www.jsce.ir/article_77137_64653f108ec8887ac88d8333bed2c53a.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616This paper presents the results of an axial pressure test on reinforced concrete columns made of high-strength concrete, which are encapsulated using a glass-fiber reinforced plastic pipes (GRP) and also with fiber reinforced polymer (FRP). The purpose of this study was to investigate the load bearing behavior of concrete columns enclosed with GRP casings and CFRP composites under compressive loads. In this research, the effect of using the GRP casings, CFRP sheets, and also the number of CFRP layers has been investigated. In this research, six circular reinforced concrete columns were manufactured from high-strength concrete, half of columns (group 1) had a GRP casing and the other half (group 2) without casing. From each group, a column had no CFRP reinforcement layer, a column with one layer and another column with two layers of CFRP reinforcement. All columns were tested under concentrated compressive force. The results showed that the use of CFRP sheets and GRP casings improved the compressive strength and durability of the reinforced columns. The addition of a layer and two layers of CFRP increased an average of 10.2% and 24.8% in compressive strength, while the use of a GRP casing increased averagely 3.83 times in compressive strength of the columns. The results indicate that although the CFRP sheets and the GRP casings are both enclosed, the GRP casings, due to their greater enclosure, have a much greater effect on the compressive strength and the ductility of the reinforced concrete columns.Fathollah SajediMohsen ShafieiniaVahid Razavi ToosiIranian Society of Structrual Engineering (ISSE)articlereinforced concrete columnhigh-strength concretegrp casingcfrp sheetaxial forceductilityBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 7, Iss 4, Pp 202-219 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	reinforced concrete column high-strength concrete grp casing cfrp sheet axial force ductility Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	reinforced concrete column high-strength concrete grp casing cfrp sheet axial force ductility Bridge engineering TG1-470 Building construction TH1-9745 Fathollah Sajedi Mohsen Shafieinia Vahid Razavi Toosi Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets
description	This paper presents the results of an axial pressure test on reinforced concrete columns made of high-strength concrete, which are encapsulated using a glass-fiber reinforced plastic pipes (GRP) and also with fiber reinforced polymer (FRP). The purpose of this study was to investigate the load bearing behavior of concrete columns enclosed with GRP casings and CFRP composites under compressive loads. In this research, the effect of using the GRP casings, CFRP sheets, and also the number of CFRP layers has been investigated. In this research, six circular reinforced concrete columns were manufactured from high-strength concrete, half of columns (group 1) had a GRP casing and the other half (group 2) without casing. From each group, a column had no CFRP reinforcement layer, a column with one layer and another column with two layers of CFRP reinforcement. All columns were tested under concentrated compressive force. The results showed that the use of CFRP sheets and GRP casings improved the compressive strength and durability of the reinforced columns. The addition of a layer and two layers of CFRP increased an average of 10.2% and 24.8% in compressive strength, while the use of a GRP casing increased averagely 3.83 times in compressive strength of the columns. The results indicate that although the CFRP sheets and the GRP casings are both enclosed, the GRP casings, due to their greater enclosure, have a much greater effect on the compressive strength and the ductility of the reinforced concrete columns.
format	article
author	Fathollah Sajedi Mohsen Shafieinia Vahid Razavi Toosi
author_facet	Fathollah Sajedi Mohsen Shafieinia Vahid Razavi Toosi
author_sort	Fathollah Sajedi
title	Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets
title_short	Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets
title_full	Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets
title_fullStr	Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets
title_full_unstemmed	Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets
title_sort	investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with grp casing and cfrp sheets
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/a56cef30234740ccba7f9dcb06d21733
work_keys_str_mv	AT fathollahsajedi investigationonthebehaviourofreinforcedconcretecolumnsmadeofhighstrengthconcreteenclosedwithgrpcasingandcfrpsheets AT mohsenshafieinia investigationonthebehaviourofreinforcedconcretecolumnsmadeofhighstrengthconcreteenclosedwithgrpcasingandcfrpsheets AT vahidrazavitoosi investigationonthebehaviourofreinforcedconcretecolumnsmadeofhighstrengthconcreteenclosedwithgrpcasingandcfrpsheets
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Investigation on the behaviour of reinforced concrete columns made of high-strength concrete, enclosed with GRP casing and CFRP sheets

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