narrower concept acid Concept carbon dioxide Concept carbonating Concept concrete corrosion Concept concrete damage Concept corrosion Concept corrosion behaviour Concept corrosion damage Concept corrosion resistance Concept crystallization Concept de-icing salt Concept de-icing salt damage Concept external corrosion Concept fire fighting water Concept gas concentration Concept gas permeability Concept hardening Concept hydrogen Concept magnesium Concept protection against corrosion Concept salt Concept sea water Concept solvent Concept sulphur Concept sulphur dioxide Concept