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Determining Factors Affecting Pitting Corrosion of Stainless Steel Reinforcing Bars

Abdolhosseini, Mohaddeseh / Ogunsanya, Ibrahim G.

Corrosion of steel reinforcing bars (rebar) caused by chloride ions from seawater or deicing salts is a major deterioration mode of reinforced concrete (RC) structures. A practical solution to improve this durability challenge is the use of corrosion resistant materials such as stainless steel (SS) rebar. Pitting corrosion is the most prevalent and insidious corrosion type on SS rebar, which considerably impacts structural load-bearing capacity and safety. In addition, the manufacturing process of ordinary Portland cement (OPC), a key ingredient in concrete production, contributes to 8% of the global carbon footprint. A common approach to improve this sustainability challenge is through the use of new cement blends, such as Portland limestone cement (PLC), and sustainable supplementary cementitious materials (SCM) to partially replace OPC. The present study, being phase one of a research program, aims to investigate and report key influencing factors, including rebar alloy composition, SCM incorporation, and chloride concentration, affecting the pitting corrosion behavior of different SS rebar grades. The outcome of this literature review study will be used, in the next phase, to develop a comprehensive model needed to improve understanding of the factors affecting the pitting corrosion in SS rebar in various sustainable concrete mixes. In general, the research outcome will help the researchers evaluate rebar's corrosion characteristics, creating a safer and more sustainable environment while also contributing to reducing CO₂ emissions.

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Determining Factors Affecting Pitting Corrosion of Stainless Steel Reinforcing Bars

Abdolhosseini, Mohaddeseh / Ogunsanya, Ibrahim G.

Corrosion of steel reinforcing bars (rebar) caused by chloride ions from seawater or deicing salts is a major deterioration mode of reinforced concrete (RC) structures. A practical solution to improve this durability challenge is the use of corrosion resistant materials such as stainless steel (SS) rebar. Pitting corrosion is the most prevalent and insidious corrosion type on SS rebar, which considerably impacts structural load-bearing capacity and safety. In addition, the manufacturing process of ordinary Portland cement (OPC), a key ingredient in concrete production, contributes to 8% of the global carbon footprint. A common approach to improve this sustainability challenge is through the use of new cement blends, such as Portland limestone cement (PLC), and sustainable supplementary cementitious materials (SCM) to partially replace OPC. The present study, being phase one of a research program, aims to investigate and report key influencing factors, including rebar alloy composition, SCM incorporation, and chloride concentration, affecting the pitting corrosion behavior of different SS rebar grades. The outcome of this literature review study will be used, in the next phase, to develop a comprehensive model needed to improve understanding of the factors affecting the pitting corrosion in SS rebar in various sustainable concrete mixes. In general, the research outcome will help the researchers evaluate rebar's corrosion characteristics, creating a safer and more sustainable environment while also contributing to reducing CO₂ emissions.

Determining Factors Affecting Pitting Corrosion of Stainless Steel Reinforcing Bars

Abdolhosseini, Mohaddeseh / Ogunsanya, Ibrahim G.

Corrosion of steel reinforcing bars (rebar) caused by chloride ions from seawater or deicing salts is a major deterioration mode of reinforced concrete (RC) structures. A practical solution to improve this durability challenge is the use of corrosion resistant materials such as stainless steel (SS) rebar. Pitting corrosion is the most prevalent and insidious corrosion type on SS rebar, which considerably impacts structural load-bearing capacity and safety. In addition, the manufacturing process of ordinary Portland cement (OPC), a key ingredient in concrete production, contributes to 8% of the global carbon footprint. A common approach to improve this sustainability challenge is through the use of new cement blends, such as Portland limestone cement (PLC), and sustainable supplementary cementitious materials (SCM) to partially replace OPC. The present study, being phase one of a research program, aims to investigate and report key influencing factors, including rebar alloy composition, SCM incorporation, and chloride concentration, affecting the pitting corrosion behavior of different SS rebar grades. The outcome of this literature review study will be used, in the next phase, to develop a comprehensive model needed to improve understanding of the factors affecting the pitting corrosion in SS rebar in various sustainable concrete mixes. In general, the research outcome will help the researchers evaluate rebar's corrosion characteristics, creating a safer and more sustainable environment while also contributing to reducing CO₂ emissions.

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Title:

Determining Factors Affecting Pitting Corrosion of Stainless Steel Reinforcing Bars

Additional title:

RILEM Bookseries

Contributors:

Banthia, Nemkumar (editor) / Soleimani-Dashtaki, Salman (editor) / Mindess, Sidney (editor) / Abdolhosseini, Mohaddeseh (author) / Ogunsanya, Ibrahim G. (author)

Conference:

Interdisciplinary Symposium on Smart & Sustainable Infrastructures ; 2023 ; Vancouver, BC, Canada

Published in:

Smart & Sustainable Infrastructure: Building a Greener Tomorrow ; Chapter: 56 ; 615-628

RILEM Bookseries ; 48

Publication date:

2024-02-20

Size:

14 pages

ISBN:

978-3-031-53389-1 , 978-3-031-53388-4

ISSN:

2211-0852 , 2211-0844

DOI:

https://doi.org/10.1007/978-3-031-53389-1_56

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Pitting corrosion , Supplementary cementitious materials (SCM) , Stainless steel (SS) reinforcing bars , Reinforced concrete Engineering , Building Materials , Structural Materials , Sustainable Development

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