Rebar Corrosion and Rusting Steel

Corrosion of embedded rebar is one of the most dangerous long-term threats to concrete structures. As steel expands when it rusts, it causes cracking, spalling, and structural weakening from the inside out.

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Rebar Corrosion and Rusting Steel

How Rebar Corrosion Starts

Moisture and chlorides (like road salts or seawater) penetrate concrete over time, eventually reaching the steel reinforcement. Once the protective alkalinity is neutralized, corrosion accelerates.

  • Concrete cracking and delamination due to rust expansion
  • Loss of bonding between steel and concrete
  • Reduced load-bearing capacity
  • Visible rust stains or surface spalling

Corrosion is Progressive — and Invisible

Rust starts within the concrete, long before cracks appear. By the time damage is visible, the steel may have already lost significant cross-section and strength. Early mitigation is key to long-term durability.

Recommended Solution

SRN recommends targeted Anti-Corrosion Treatments that penetrate concrete and protect embedded steel before significant damage occurs.

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Protect What’s Inside the Concrete

Don’t wait for visible cracks and spalls. Proactively address corrosion with a professional inspection and treatment recommendation from SRN.

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