Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load

Reinforced concrete (RC) structures built before the 1970 represent a large portion of the existing European buildings stock. Their obsolescence in terms of design criteria, materials, and functionality is becoming a critical issue for guaranteeing adequate compliance with current structural codes....

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Autores principales:	Paolino Cassese, Costantino Menna, Antonio Occhiuzzi, Domenico Asprone
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	high-performance fiber-reinforced concrete jacketing experimental tests axial load retrofitting design Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/e00dd0cb8faf440ab4647e2308303380
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spelling	oai:doaj.org-article:e00dd0cb8faf440ab4647e23083033802021-11-25T16:59:45ZExperimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load10.3390/buildings111105212075-5309https://doaj.org/article/e00dd0cb8faf440ab4647e23083033802021-11-01T00:00:00Zhttps://www.mdpi.com/2075-5309/11/11/521https://doaj.org/toc/2075-5309Reinforced concrete (RC) structures built before the 1970 represent a large portion of the existing European buildings stock. Their obsolescence in terms of design criteria, materials, and functionality is becoming a critical issue for guaranteeing adequate compliance with current structural codes. Recently, a new jacketing system based on the use of high-performance fiber-reinforced concrete (HPFRC) has been introduced for strengthening existing RC building members. Despite the promising aspects of the HPFRC jacketing technique, currently, a comprehensive and systematic technical framework for its implementation is still missing. In this paper, the experimental performance of RC columns strengthened with the HPFRC jacket subjected to pure axial load and combined axial load-bending moment uncoupled from shear is investigated. The test outcomes confirmed a significant improvement of the structural performance for the strengthened columns, especially for higher values of eccentricity. Finally, a standard-based practice-oriented analytical tool for designing retrofit interventions using the HPFRC jacket is proposed. The comparison between the calculated and experimental results revealed a satisfactory prediction capability.Paolino CasseseCostantino MennaAntonio OcchiuzziDomenico AsproneMDPI AGarticlehigh-performance fiber-reinforced concretejacketingexperimental testsaxial loadretrofitting designBuilding constructionTH1-9745ENBuildings, Vol 11, Iss 521, p 521 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	high-performance fiber-reinforced concrete jacketing experimental tests axial load retrofitting design Building construction TH1-9745
spellingShingle	high-performance fiber-reinforced concrete jacketing experimental tests axial load retrofitting design Building construction TH1-9745 Paolino Cassese Costantino Menna Antonio Occhiuzzi Domenico Asprone Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load
description	Reinforced concrete (RC) structures built before the 1970 represent a large portion of the existing European buildings stock. Their obsolescence in terms of design criteria, materials, and functionality is becoming a critical issue for guaranteeing adequate compliance with current structural codes. Recently, a new jacketing system based on the use of high-performance fiber-reinforced concrete (HPFRC) has been introduced for strengthening existing RC building members. Despite the promising aspects of the HPFRC jacketing technique, currently, a comprehensive and systematic technical framework for its implementation is still missing. In this paper, the experimental performance of RC columns strengthened with the HPFRC jacket subjected to pure axial load and combined axial load-bending moment uncoupled from shear is investigated. The test outcomes confirmed a significant improvement of the structural performance for the strengthened columns, especially for higher values of eccentricity. Finally, a standard-based practice-oriented analytical tool for designing retrofit interventions using the HPFRC jacket is proposed. The comparison between the calculated and experimental results revealed a satisfactory prediction capability.
format	article
author	Paolino Cassese Costantino Menna Antonio Occhiuzzi Domenico Asprone
author_facet	Paolino Cassese Costantino Menna Antonio Occhiuzzi Domenico Asprone
author_sort	Paolino Cassese
title	Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load
title_short	Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load
title_full	Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load
title_fullStr	Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load
title_full_unstemmed	Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load
title_sort	experimental behavior of existing rc columns strengthened with hpfrc jacket under concentric and eccentric compressive load
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e00dd0cb8faf440ab4647e2308303380
work_keys_str_mv	AT paolinocassese experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload AT costantinomenna experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload AT antonioocchiuzzi experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload AT domenicoasprone experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload
_version_	1718412808355315712

Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load

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