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Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills

The behaviour of reinforced concrete frames with masonry wall infills is influenced a lot by the stiffness and strength difference between the frame and the infill, causing early detrimental damage to the infill or to the critical concrete columns. The paper reports the results from shake table seis...

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Autores principales: Rousakis, Theodoros, Ilki, Alper, Kwiecien, Arkadiusz, Viskovic, Alberto, Gams, Matija, Triller, Petra, Ghiassi, Bahman, Benedetti, Andrea, Rakicevic, Zoran, Colla, Camilla, Halici, Omer Faruk, Zając, Bogusław, Hojdys, Łukasz, Krajewski, Piotr, Rizzo, Fabio, Vanian, Vachan, Sapalidis, Anastasios, Papadouli, Efthimia, Bogdanovic, Aleksandra
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7761037/
https://www.ncbi.nlm.nih.gov/pubmed/33266106
http://dx.doi.org/10.3390/polym12122869
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author Rousakis, Theodoros
Ilki, Alper
Kwiecien, Arkadiusz
Viskovic, Alberto
Gams, Matija
Triller, Petra
Ghiassi, Bahman
Benedetti, Andrea
Rakicevic, Zoran
Colla, Camilla
Halici, Omer Faruk
Zając, Bogusław
Hojdys, Łukasz
Krajewski, Piotr
Rizzo, Fabio
Vanian, Vachan
Sapalidis, Anastasios
Papadouli, Efthimia
Bogdanovic, Aleksandra
author_facet Rousakis, Theodoros
Ilki, Alper
Kwiecien, Arkadiusz
Viskovic, Alberto
Gams, Matija
Triller, Petra
Ghiassi, Bahman
Benedetti, Andrea
Rakicevic, Zoran
Colla, Camilla
Halici, Omer Faruk
Zając, Bogusław
Hojdys, Łukasz
Krajewski, Piotr
Rizzo, Fabio
Vanian, Vachan
Sapalidis, Anastasios
Papadouli, Efthimia
Bogdanovic, Aleksandra
author_sort Rousakis, Theodoros
collection PubMed
description The behaviour of reinforced concrete frames with masonry wall infills is influenced a lot by the stiffness and strength difference between the frame and the infill, causing early detrimental damage to the infill or to the critical concrete columns. The paper reports the results from shake table seismic tests on a full-scale reinforced concrete (RC) frame building with modified hollow clay block (orthoblock brick) infill walls, within INMASPOL SERA Horizon 2020 project. The building received innovative resilient protection using Polyurethane Flexible Joints (PUFJs) made of polyurethane resin (PU), applied at the frame-infill interface in different schemes. Further, PUs were used for bonding of glass fibre grids to the weak masonry substrate to form Fibre Reinforced Polyurethanes (FRPUs) as an emergency repair intervention. The test results showed enhancement in the in-plane and out-of-plane infill performance under seismic excitations. The results confirmed remarkable delay of significant infill damages at very high RC frame inter-story drifts as a consequence of the use of PUFJs. Further, the PUFJ protection enabled the resilient repair of the infill even after very high inter-story drift of the structure up to 3.7%. The applied glass FRPU system efficiently protected the damaged infills against collapse under out-of-plane excitation while they restored large part of their in-plane stiffness.
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spelling pubmed-77610372020-12-26 Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills Rousakis, Theodoros Ilki, Alper Kwiecien, Arkadiusz Viskovic, Alberto Gams, Matija Triller, Petra Ghiassi, Bahman Benedetti, Andrea Rakicevic, Zoran Colla, Camilla Halici, Omer Faruk Zając, Bogusław Hojdys, Łukasz Krajewski, Piotr Rizzo, Fabio Vanian, Vachan Sapalidis, Anastasios Papadouli, Efthimia Bogdanovic, Aleksandra Polymers (Basel) Article The behaviour of reinforced concrete frames with masonry wall infills is influenced a lot by the stiffness and strength difference between the frame and the infill, causing early detrimental damage to the infill or to the critical concrete columns. The paper reports the results from shake table seismic tests on a full-scale reinforced concrete (RC) frame building with modified hollow clay block (orthoblock brick) infill walls, within INMASPOL SERA Horizon 2020 project. The building received innovative resilient protection using Polyurethane Flexible Joints (PUFJs) made of polyurethane resin (PU), applied at the frame-infill interface in different schemes. Further, PUs were used for bonding of glass fibre grids to the weak masonry substrate to form Fibre Reinforced Polyurethanes (FRPUs) as an emergency repair intervention. The test results showed enhancement in the in-plane and out-of-plane infill performance under seismic excitations. The results confirmed remarkable delay of significant infill damages at very high RC frame inter-story drifts as a consequence of the use of PUFJs. Further, the PUFJ protection enabled the resilient repair of the infill even after very high inter-story drift of the structure up to 3.7%. The applied glass FRPU system efficiently protected the damaged infills against collapse under out-of-plane excitation while they restored large part of their in-plane stiffness. MDPI 2020-11-30 /pmc/articles/PMC7761037/ /pubmed/33266106 http://dx.doi.org/10.3390/polym12122869 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rousakis, Theodoros
Ilki, Alper
Kwiecien, Arkadiusz
Viskovic, Alberto
Gams, Matija
Triller, Petra
Ghiassi, Bahman
Benedetti, Andrea
Rakicevic, Zoran
Colla, Camilla
Halici, Omer Faruk
Zając, Bogusław
Hojdys, Łukasz
Krajewski, Piotr
Rizzo, Fabio
Vanian, Vachan
Sapalidis, Anastasios
Papadouli, Efthimia
Bogdanovic, Aleksandra
Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills
title Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills
title_full Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills
title_fullStr Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills
title_full_unstemmed Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills
title_short Deformable Polyurethane Joints and Fibre Grids for Resilient Seismic Performance of Reinforced Concrete Frames with Orthoblock Brick Infills
title_sort deformable polyurethane joints and fibre grids for resilient seismic performance of reinforced concrete frames with orthoblock brick infills
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7761037/
https://www.ncbi.nlm.nih.gov/pubmed/33266106
http://dx.doi.org/10.3390/polym12122869
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