Methods of corrosion protection for metals (steel), concrete and natural stones


Industry - Private use


-Statement of damages-
-Causal investigations-
-Proposals for reconstruction-
-Cost estimation-
-Cost estimation in case of reconstructions-
-Residual value investigations-




1. Steel, without zinc coating, with organic coatings (paint coatings)

Examples:

Corrosion (rusting) of the steel, with or without organic coatings,
Internal blistering of the organic coatings,
Loss of adhesion between coatings and steel,
Internal separation of coatings with loss of adhesion,
Insufficient coating thicknesses,
Colour changes



2. Hot-dip-galvanized coatings on steel, also with organic coatings (paint coatings)

Examples:

White rust formation (corrosion of zinc),
Corrosion (rusting) of the zinc-coated steel, with or without organic coatings,
Internal blistering of the organic coatings,
Loss of adhesion between coatings and steel or zinc coating,
Internal separation of organic coatings with loss of adhesion,
Insufficient coating thicknesses,
Assessment of zinc coatings,
Colour changes of the organic coatings on zinc



3. Thermally sprayed zinc coatings on steel, also with organic coatings (paint coatings)


Examples:

as described under 2 Hot-dip-galvanized coatings on steel


4. Zinc, aluminium and other non-ferrous metals, with organic coatings (paint coatings)

Examples:

Separation of the coating from the metallic substrate,
Internal separation of the coatings,
Insufficient coating thicknesses,
Colour changes


5. Corrosion protection, in combination with concrete and natural stones


Examples:

Concrete: Corrosion (through-rusting) of the ferrous reinforcement
Natural stone: Contamination by corrosion products of metals.



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