A Process to Improve the Corrosion Resistance of Steel Rebar

Rusting of steel rebar during transport and storage is prevented through the chemical treatment process.

Chemical treatment of steel rebar to prevent rust formation during storage and transport.

• The chemical treatment can be done offline or online in a rebar production line
• The treatment process involves contacting the rebar surface with the treatment solution for a duration of 1-2 seconds by spraying or dipping.
• The chemical treatment can be done at ambient conditions or at elevated temperatures of up to 600 ^o
• The chemical treatment results in the formation of an invisible conversion coating of less than 1 µm on the rebar surface.
• The chemical treatment process does not impact the bond strength of rebar with concrete.
• The process is scalable and economical

• Prevents rusting of rebar during transport and storage
• Improves customer acceptance of rebar
• Improves life of concrete