Structural Repair
Concrete Repair: Remove the Cause Before Rebuilding the Surface
Spalling and exposed reinforcement are symptoms. Carbonation, chlorides, water ingress, poor cover or cracking may be driving deterioration.
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Distributed cracking and rust staining occur in older concrete.
Use the site evidence to agree a project-specific method with the responsible engineer, concrete producer, manufacturer or specialist applicator.
Distributed cracking and rust staining occur in older concrete.
Test carbonation depth relative to cover and map corrosion and moisture exposure.
Carbonation reduces alkalinity at steel and may enable corrosion in the presence of moisture.
Design a repair and protective strategy addressing affected cover and ongoing ingress.
Remove unsound concrete and treat steel as designed; use compatible repair and protective coating.
Check repair coverage, curing and follow-up corrosion or moisture indicators.
Local patching may leave adjacent steel in an aggressive environment.
References inform the topic; they do not endorse a specific product for this project.