This presentation and accompanying research summary demonstrate hot-dip galvanized (HDG) rebar's performance protecting reinforced concrete structures and highlight technical research confirming its chloride durability in concrete via a study conducted by the Galvanizers Association of Australia (GAA). The resulting study also produced a model for determining chloride penetration in concrete and concludes that reduced concrete cover can be considered in structures that use HDG rebar, which has a substantial impact on sustainability (raw material usage and length of service). Along with this new research on chloride durability modeling, a review of recent case studies, inspections and installations confirms its longevity and growing popularity amongst specifiers to provide long term corrosion resistance in concrete.

Subject
Steel structures, Zinc rich coatings, Diffusion, Rebar, Corrosion initiation, Steel, Galvanized rebar, Zinc, Bridges, Chlorides, Durability, Concrete, Reinforcement
Keywords:
rebar, reinforcing steel, reinforced concrete structures, hot-dip galvanizing, galvanized, hdg, corrosion, chloride durability, zinc, sustainability
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2024
Association for Materials Protection and Performance (AMPP)
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