Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber

Abstract The effectiveness of seismic retrofitting using three different fibers—carbon fiber (CF), glass fiber (GF), polyethylene terephthalate (PET) fiber—and a fiber combination of aramid fiber (AF) and PET fiber (called hybrid fiber reinforced polymer (HF)) wrapped on reinforced concrete (RC) cir...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Donguk Choi, Seongwon Hong, Myung-Kwan Lim, Sang-Su Ha, Sorrasak Vachirapanyakun
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Axial stiffness Confined concrete Ductile fiber Hybrid fiber Section analysis Systems of building construction. Including fireproof construction, concrete construction TH1000-1725
Acceso en línea:	https://doaj.org/article/5ac197dee208426d906b19b26728b3c9
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5ac197dee208426d906b19b26728b3c9
record_format	dspace
spelling	oai:doaj.org-article:5ac197dee208426d906b19b26728b3c92021-11-28T12:29:52ZSeismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber10.1186/s40069-021-00484-71976-04852234-1315https://doaj.org/article/5ac197dee208426d906b19b26728b3c92021-11-01T00:00:00Zhttps://doi.org/10.1186/s40069-021-00484-7https://doaj.org/toc/1976-0485https://doaj.org/toc/2234-1315Abstract The effectiveness of seismic retrofitting using three different fibers—carbon fiber (CF), glass fiber (GF), polyethylene terephthalate (PET) fiber—and a fiber combination of aramid fiber (AF) and PET fiber (called hybrid fiber reinforced polymer (HF)) wrapped on reinforced concrete (RC) circular columns was experimentally evaluated. A total of 11 RC circular columns were tested: three control columns and eight retrofitted columns in three different test groups. The purpose of fiber wrapping was flexural strength improvement as well as enhancement of rotational capacity in the plastic hinge region. Mechanical properties of CF, GF, AF, and PET were first defined; that is, CF, GF, and AF exhibited linear stress–strain behavior with limited ultimate strain capacity typically less than 3%, while ductile PET exhibited as much as 15% strain and non-linear stress–strain behavior with a very low elastic modulus. In the RC column tests, all three different fibers and the AF + PET fiber combination were effective in enhancing the strength and ductility but resulted in different structural behaviors and failure modes depending on the fiber type and the fiber amount used. The column sections were then analytically studied by section analysis using the behavior of confined concrete, the non-linear relationship of fiber-reinforced polymer (FRP), and the actual material properties of reinforcement. The analytical and experimental results revealed that ductile PET is beneficial, as it demonstrates more ductile behavior with a degree of strength enhancement similar to that of CF and GF.Donguk ChoiSeongwon HongMyung-Kwan LimSang-Su HaSorrasak VachirapanyakunSpringerOpenarticleAxial stiffnessConfined concreteDuctile fiberHybrid fiberSection analysisSystems of building construction. Including fireproof construction, concrete constructionTH1000-1725ENInternational Journal of Concrete Structures and Materials, Vol 15, Iss 1, Pp 1-20 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Axial stiffness Confined concrete Ductile fiber Hybrid fiber Section analysis Systems of building construction. Including fireproof construction, concrete construction TH1000-1725
spellingShingle	Axial stiffness Confined concrete Ductile fiber Hybrid fiber Section analysis Systems of building construction. Including fireproof construction, concrete construction TH1000-1725 Donguk Choi Seongwon Hong Myung-Kwan Lim Sang-Su Ha Sorrasak Vachirapanyakun Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber
description	Abstract The effectiveness of seismic retrofitting using three different fibers—carbon fiber (CF), glass fiber (GF), polyethylene terephthalate (PET) fiber—and a fiber combination of aramid fiber (AF) and PET fiber (called hybrid fiber reinforced polymer (HF)) wrapped on reinforced concrete (RC) circular columns was experimentally evaluated. A total of 11 RC circular columns were tested: three control columns and eight retrofitted columns in three different test groups. The purpose of fiber wrapping was flexural strength improvement as well as enhancement of rotational capacity in the plastic hinge region. Mechanical properties of CF, GF, AF, and PET were first defined; that is, CF, GF, and AF exhibited linear stress–strain behavior with limited ultimate strain capacity typically less than 3%, while ductile PET exhibited as much as 15% strain and non-linear stress–strain behavior with a very low elastic modulus. In the RC column tests, all three different fibers and the AF + PET fiber combination were effective in enhancing the strength and ductility but resulted in different structural behaviors and failure modes depending on the fiber type and the fiber amount used. The column sections were then analytically studied by section analysis using the behavior of confined concrete, the non-linear relationship of fiber-reinforced polymer (FRP), and the actual material properties of reinforcement. The analytical and experimental results revealed that ductile PET is beneficial, as it demonstrates more ductile behavior with a degree of strength enhancement similar to that of CF and GF.
format	article
author	Donguk Choi Seongwon Hong Myung-Kwan Lim Sang-Su Ha Sorrasak Vachirapanyakun
author_facet	Donguk Choi Seongwon Hong Myung-Kwan Lim Sang-Su Ha Sorrasak Vachirapanyakun
author_sort	Donguk Choi
title	Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber
title_short	Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber
title_full	Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber
title_fullStr	Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber
title_full_unstemmed	Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber
title_sort	seismic retrofitting of rc circular columns using carbon fiber, glass fiber, or ductile pet fiber
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/5ac197dee208426d906b19b26728b3c9
work_keys_str_mv	AT dongukchoi seismicretrofittingofrccircularcolumnsusingcarbonfiberglassfiberorductilepetfiber AT seongwonhong seismicretrofittingofrccircularcolumnsusingcarbonfiberglassfiberorductilepetfiber AT myungkwanlim seismicretrofittingofrccircularcolumnsusingcarbonfiberglassfiberorductilepetfiber AT sangsuha seismicretrofittingofrccircularcolumnsusingcarbonfiberglassfiberorductilepetfiber AT sorrasakvachirapanyakun seismicretrofittingofrccircularcolumnsusingcarbonfiberglassfiberorductilepetfiber
_version_	1718407955186974720

Seismic Retrofitting of RC Circular Columns Using Carbon Fiber, Glass Fiber, or Ductile PET Fiber

Ejemplares similares