Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers

Fiber-reinforced polymer (FRP) composites have been used for structural strengthening in the recent decay and is the appropriate way to increase structural capacity and gaining more popularity among design professionals over conventional strengthening techniques due to its superior mechanical proper...

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Autores principales:	Ali Kheyroddin, Mohammad Kazem Sharbatdar, Ali Ashary
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2019
Materias:	rc frame rehabilitation cfr polymer composite ductility energy absorption maximum capacity Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/5e1dfd2f2b594f589e8282c7b0ec9aaa
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spelling	oai:doaj.org-article:5e1dfd2f2b594f589e8282c7b0ec9aaa2021-11-08T15:51:06ZExperimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers2476-39772538-261610.22065/jsce.2017.86033.1173https://doaj.org/article/5e1dfd2f2b594f589e8282c7b0ec9aaa2019-02-01T00:00:00Zhttps://www.jsce.ir/article_49609_4011896a4c331512dc98087bb46b5b90.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Fiber-reinforced polymer (FRP) composites have been used for structural strengthening in the recent decay and is the appropriate way to increase structural capacity and gaining more popularity among design professionals over conventional strengthening techniques due to its superior mechanical properties and higher tensile strength, stiffness, and durability compared with other techniques. In this paper, the structural behavior of undamaged and damaged reinforced concrete frames strengthened with CFRP composite material was experimentally evaluated. Initially three half-scale reinforcement concrete frames are considered as reference specimens with same beams and columns dimensions and also reinforcement, but different columns stirrup distances 100,200 and 300 mm at the first, second and third specimens respectively. The reference frames were tested under constant axial load and increasing lateral load up to their maximum capacity and failure points, and leaving severe damaged frames. Then, the damaged frames were strengthened with CFRP (Carbon Fiber Reinforced Polymer) composite layers with same arrangement at the critical zones around connections and tested again same as the reference specimens at axial and lateral loadings. The test results indicated that with increasing column stirrup distances of reference specimens, the maximum capacity and ductility and energy absorption were decreased up to 10, 50, and 74%, respectively. And also the maximum capacity and ductility of strengthened specimens were decreased up to 20 and 80% comparing to reference specimens but the energy absorption of strengthened specimens were increased.Ali KheyroddinMohammad Kazem SharbatdarAli AsharyIranian Society of Structrual Engineering (ISSE)articlerc framerehabilitationcfr polymer compositeductilityenergy absorptionmaximum capacityBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 5, Iss شماره ویژه 4, Pp 22-35 (2019)
institution	DOAJ
collection	DOAJ
language	FA
topic	rc frame rehabilitation cfr polymer composite ductility energy absorption maximum capacity Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	rc frame rehabilitation cfr polymer composite ductility energy absorption maximum capacity Bridge engineering TG1-470 Building construction TH1-9745 Ali Kheyroddin Mohammad Kazem Sharbatdar Ali Ashary Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers
description	Fiber-reinforced polymer (FRP) composites have been used for structural strengthening in the recent decay and is the appropriate way to increase structural capacity and gaining more popularity among design professionals over conventional strengthening techniques due to its superior mechanical properties and higher tensile strength, stiffness, and durability compared with other techniques. In this paper, the structural behavior of undamaged and damaged reinforced concrete frames strengthened with CFRP composite material was experimentally evaluated. Initially three half-scale reinforcement concrete frames are considered as reference specimens with same beams and columns dimensions and also reinforcement, but different columns stirrup distances 100,200 and 300 mm at the first, second and third specimens respectively. The reference frames were tested under constant axial load and increasing lateral load up to their maximum capacity and failure points, and leaving severe damaged frames. Then, the damaged frames were strengthened with CFRP (Carbon Fiber Reinforced Polymer) composite layers with same arrangement at the critical zones around connections and tested again same as the reference specimens at axial and lateral loadings. The test results indicated that with increasing column stirrup distances of reference specimens, the maximum capacity and ductility and energy absorption were decreased up to 10, 50, and 74%, respectively. And also the maximum capacity and ductility of strengthened specimens were decreased up to 20 and 80% comparing to reference specimens but the energy absorption of strengthened specimens were increased.
format	article
author	Ali Kheyroddin Mohammad Kazem Sharbatdar Ali Ashary
author_facet	Ali Kheyroddin Mohammad Kazem Sharbatdar Ali Ashary
author_sort	Ali Kheyroddin
title	Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers
title_short	Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers
title_full	Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers
title_fullStr	Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers
title_full_unstemmed	Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers
title_sort	experimental evaluation of rc damaged frames rehabilitated at critical zones with cfrp composite layers
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2019
url	https://doaj.org/article/5e1dfd2f2b594f589e8282c7b0ec9aaa
work_keys_str_mv	AT alikheyroddin experimentalevaluationofrcdamagedframesrehabilitatedatcriticalzoneswithcfrpcompositelayers AT mohammadkazemsharbatdar experimentalevaluationofrcdamagedframesrehabilitatedatcriticalzoneswithcfrpcompositelayers AT aliashary experimentalevaluationofrcdamagedframesrehabilitatedatcriticalzoneswithcfrpcompositelayers
_version_	1718441663606554624

Experimental Evaluation of RC Damaged Frames Rehabilitated at Critical Zones with CFRP Composite layers

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