Methods for protecting the surface of concrete structures from corrosion
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Table 1 Anti-corrosion solutions for different types of concrete storage tanks. Anti-corrosion grade, process conditions, and anti-corrosion methods: Basic anti-corrosion – Maintain a water pH of around 7 and avoid sedimentation; use waterproof and anti-corrosive coatings: 2–3 layers of epoxy coal tar paint, 2–3 layers of epoxy polysulfide rubber paint, 2–3 layers of epoxy rubber paint, 2–3 layers of epoxy chlorosulfonate paint; total coating thickness: 300–40 μm. Enhanced anti-corrosion – Industrial wastewater contains chemicals and is acidic (pH
Less than 7); in the presence of corrosive substances, acid- and corrosion-resistant materials such as polyurethane coating in 3–4 layers, glass flake mortar in 2–3 layers, and polyethylene coating in 2–3 layers should be used, with a total coating thickness of 400–50 μm. .