STRUCTURE DURABILITY USING REBAR | Corrosion in the Built Environment

In this first episode of our Bite-Sized Corrosion series on corrosion in the built environment, we’re joined by Craig Stevenson, a registered professional engineer and corrosion and cathodic protection specialist with over 40 years of experience in infrastructure protection. This episode is a must-watch for engineers, asset owners, and anyone interested in corrosion engineering and structural durability. Craig explores the critical role of rebar in reinforced concrete, explaining both its structural benefits and its susceptibility to corrosion, one of the leading causes of concrete deterioration worldwide. Using practical examples such as bridge support columns and marine infrastructure, he highlights how environmental exposure, particularly in coastal and splash zone conditions, accelerates corrosion and impacts long-term performance. The discussion also covers key material selection considerations, including the differences between mild steel, galvanised steel, and stainless steel rebar. Craig explains how engineers choose materials for different applications, such as piles, bridge decks, and support columns, and why stainless steel rebar is often specified in high-risk areas like splash zones in regions such as Ontario. We also introduce cathodic protection for reinforced concrete structures, including when it is used, when it may not be suitable, and how it helps mitigate corrosion in critical infrastructure. Find us: Instagram: https://www.instagram.com/isifunditraining Linkedin: https://www.linkedin.com/company/isifundi Website: https://isifundi.co.za/ Online courses: https://isifundi-school.teachable.com/