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....
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-11-01
|
| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/11/11/521 |
| _version_ | 1797511038341480448 |
|---|---|
| author | Paolino Cassese Costantino Menna Antonio Occhiuzzi Domenico Asprone |
| author_facet | Paolino Cassese Costantino Menna Antonio Occhiuzzi Domenico Asprone |
| author_sort | Paolino Cassese |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T05:39:46Z |
| format | Article |
| id | doaj.art-e00dd0cb8faf440ab4647e2308303380 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T05:39:46Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-e00dd0cb8faf440ab4647e23083033802023-11-22T22:39:42ZengMDPI AGBuildings2075-53092021-11-01111152110.3390/buildings11110521Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive LoadPaolino Cassese0Costantino Menna1Antonio Occhiuzzi2Domenico Asprone3Construction Technologies Institute (ITC)—Secondary Branch of Naples, National Research Council of Italy (CNR), c/o Polo Tecnologico di San Giovanni a Teduccio, 80146 Naples, ItalyDepartment of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125 Naples, ItalyConstruction Technologies Institute (ITC)—Secondary Branch of Naples, National Research Council of Italy (CNR), c/o Polo Tecnologico di San Giovanni a Teduccio, 80146 Naples, ItalyDepartment of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125 Naples, ItalyReinforced 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.https://www.mdpi.com/2075-5309/11/11/521high-performance fiber-reinforced concretejacketingexperimental testsaxial loadretrofitting design |
| spellingShingle | Paolino Cassese Costantino Menna Antonio Occhiuzzi Domenico Asprone Experimental Behavior of Existing RC Columns Strengthened with HPFRC Jacket under Concentric and Eccentric Compressive Load Buildings high-performance fiber-reinforced concrete jacketing experimental tests axial load retrofitting design |
| title | 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_short | 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 |
| topic | high-performance fiber-reinforced concrete jacketing experimental tests axial load retrofitting design |
| url | https://www.mdpi.com/2075-5309/11/11/521 |
| work_keys_str_mv | AT paolinocassese experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload AT costantinomenna experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload AT antonioocchiuzzi experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload AT domenicoasprone experimentalbehaviorofexistingrccolumnsstrengthenedwithhpfrcjacketunderconcentricandeccentriccompressiveload |