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Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers

A strain-hardening cementitious composite (SHCC) is a modern engineered material offering exceptional ductility and durability. A potential application of SHCCs for crack control and to improve structural members’ load-bearing capabilities is due to its superior properties. In this study, SHCCs were...

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Detalles Bibliográficos
Autores principales: Khan, M. Iqbal, Sial, Sardar Umer, Abbas, Yassir M., Fares, Galal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10384290/
https://www.ncbi.nlm.nih.gov/pubmed/37512408
http://dx.doi.org/10.3390/ma16145135
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author Khan, M. Iqbal
Sial, Sardar Umer
Abbas, Yassir M.
Fares, Galal
author_facet Khan, M. Iqbal
Sial, Sardar Umer
Abbas, Yassir M.
Fares, Galal
author_sort Khan, M. Iqbal
collection PubMed
description A strain-hardening cementitious composite (SHCC) is a modern engineered material offering exceptional ductility and durability. A potential application of SHCCs for crack control and to improve structural members’ load-bearing capabilities is due to its superior properties. In this study, SHCCs were used to enhance the load-carrying capacity and the cracking behavior of precast RC beams. In the bottom tension region of RC beams, the SHCCs of different layer thicknesses (0%, 15%, 30%, and 45% of section height) were cast. Laboratory-scale beams were used in 4-point bending tests. SHCC-layered RC beams showed improved flexural performance compared to control RC beams. Among retrofitted beams, the one with an SHCC layer of 30% of the section height was found to be the most efficient pertaining to strength, ductility, and cracking control. In this study, the flexural response of composite beams was also predicted using an analytical approach. The average difference between predicted and measured moment capacities was less than 10%.
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spelling pubmed-103842902023-07-30 Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers Khan, M. Iqbal Sial, Sardar Umer Abbas, Yassir M. Fares, Galal Materials (Basel) Article A strain-hardening cementitious composite (SHCC) is a modern engineered material offering exceptional ductility and durability. A potential application of SHCCs for crack control and to improve structural members’ load-bearing capabilities is due to its superior properties. In this study, SHCCs were used to enhance the load-carrying capacity and the cracking behavior of precast RC beams. In the bottom tension region of RC beams, the SHCCs of different layer thicknesses (0%, 15%, 30%, and 45% of section height) were cast. Laboratory-scale beams were used in 4-point bending tests. SHCC-layered RC beams showed improved flexural performance compared to control RC beams. Among retrofitted beams, the one with an SHCC layer of 30% of the section height was found to be the most efficient pertaining to strength, ductility, and cracking control. In this study, the flexural response of composite beams was also predicted using an analytical approach. The average difference between predicted and measured moment capacities was less than 10%. MDPI 2023-07-21 /pmc/articles/PMC10384290/ /pubmed/37512408 http://dx.doi.org/10.3390/ma16145135 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khan, M. Iqbal
Sial, Sardar Umer
Abbas, Yassir M.
Fares, Galal
Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers
title Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers
title_full Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers
title_fullStr Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers
title_full_unstemmed Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers
title_short Structural Performance Improvement of Reinforced Concrete Beams by Strain-Hardening Cementitious Composite Layers
title_sort structural performance improvement of reinforced concrete beams by strain-hardening cementitious composite layers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10384290/
https://www.ncbi.nlm.nih.gov/pubmed/37512408
http://dx.doi.org/10.3390/ma16145135
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