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Bond-Slip Behavior between Stainless Steel Rebars and Concrete

Maintenance of reinforced concrete structures is a prevailing topic, especially with regard to lifeline structures and bridges, many of which are now designed with a service life beyond 100 years. Reinforcement made of ordinary (carbon) steel may corrode in aggressive environments. Stainless steel,...

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Autores principales: Pauletta, Margherita, Rovere, Nicola, Randl, Norbert, Russo, Gaetano
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078846/
https://www.ncbi.nlm.nih.gov/pubmed/32098233
http://dx.doi.org/10.3390/ma13040979
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author Pauletta, Margherita
Rovere, Nicola
Randl, Norbert
Russo, Gaetano
author_facet Pauletta, Margherita
Rovere, Nicola
Randl, Norbert
Russo, Gaetano
author_sort Pauletta, Margherita
collection PubMed
description Maintenance of reinforced concrete structures is a prevailing topic, especially with regard to lifeline structures and bridges, many of which are now designed with a service life beyond 100 years. Reinforcement made of ordinary (carbon) steel may corrode in aggressive environments. Stainless steel, being much more resistant to corrosion, is a valid solution to facilitate the protection of the works, increasing the service life and reducing the need for repair and maintenance. Despite the potential for stainless steel to reduce maintenance costs, studies investigating the influence of stainless steel on the behavior of reinforced concrete structures are limited. This study investigated the bond behavior of stainless steel rebars by means of experimental tests on reinforced concrete specimens with different concrete cover thicknesses, concrete strengths, and bar diameters. In each case, identical specimens with carbon steel reinforcement were tested for comparison. The failure modes of the specimens were examined, and a bond stress–slip relationship for stainless steel bars was established. This research shows that the bond behavior of stainless steel rebars is comparable to that of carbon steel bars.
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spelling pubmed-70788462020-04-21 Bond-Slip Behavior between Stainless Steel Rebars and Concrete Pauletta, Margherita Rovere, Nicola Randl, Norbert Russo, Gaetano Materials (Basel) Article Maintenance of reinforced concrete structures is a prevailing topic, especially with regard to lifeline structures and bridges, many of which are now designed with a service life beyond 100 years. Reinforcement made of ordinary (carbon) steel may corrode in aggressive environments. Stainless steel, being much more resistant to corrosion, is a valid solution to facilitate the protection of the works, increasing the service life and reducing the need for repair and maintenance. Despite the potential for stainless steel to reduce maintenance costs, studies investigating the influence of stainless steel on the behavior of reinforced concrete structures are limited. This study investigated the bond behavior of stainless steel rebars by means of experimental tests on reinforced concrete specimens with different concrete cover thicknesses, concrete strengths, and bar diameters. In each case, identical specimens with carbon steel reinforcement were tested for comparison. The failure modes of the specimens were examined, and a bond stress–slip relationship for stainless steel bars was established. This research shows that the bond behavior of stainless steel rebars is comparable to that of carbon steel bars. MDPI 2020-02-21 /pmc/articles/PMC7078846/ /pubmed/32098233 http://dx.doi.org/10.3390/ma13040979 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
Pauletta, Margherita
Rovere, Nicola
Randl, Norbert
Russo, Gaetano
Bond-Slip Behavior between Stainless Steel Rebars and Concrete
title Bond-Slip Behavior between Stainless Steel Rebars and Concrete
title_full Bond-Slip Behavior between Stainless Steel Rebars and Concrete
title_fullStr Bond-Slip Behavior between Stainless Steel Rebars and Concrete
title_full_unstemmed Bond-Slip Behavior between Stainless Steel Rebars and Concrete
title_short Bond-Slip Behavior between Stainless Steel Rebars and Concrete
title_sort bond-slip behavior between stainless steel rebars and concrete
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078846/
https://www.ncbi.nlm.nih.gov/pubmed/32098233
http://dx.doi.org/10.3390/ma13040979
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