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Protection of the inner part of the concrete sump for sodium hydroxide

Surface preparation

Preparation of concrete substrate by abrasive blasting.

Application of masses

Applied Products:

Applied coating systems:
NS1 = 2 000 μm DFT

Applied substrate:
Inner parts of the sump; Concrete; 100 m²


  • removal of coarse dirt and damaged paint
  • preparation of the concrete surface by abrasive blasting
  • application of POLYGLASS WCP primer
  • application of CORROCOAT RENDERPOL filler material
  • application of electrically conductive CORROCOAT GRAPHITE S
  • application of laminating layer AR LR + Glass cloth 600 g/m²
  • application of the final layer CORROGLASS AR4
  • carrying out the relevant quality tests according to the PKZ

CORROTECH ENGINEERING s.r.o. provides highly professional services in the field of surface preparation and application of special coating systems for the most demanding stress environments and various industrial equipment. The CORROCOAT AR coating system, filled with special glass microflakes, is the ideal choice to protect the interior of the sump against chemical loading in highly alkaline environments, protecting the concrete substrate in the long term and extending the overall life of the plant. CORROCOAT Graphite S, an electrically conductive coating, was used as part of the specified coating system, which subsequently enabled the integrity and porosity of the coating to be tested by high-voltage testing even on a non-conductive concrete substrate.

CORROCOAT has been successfully fighting corrosion for more than 45 years. It uses innovative mechanical engineering combined with anti-corrosion technology to provide long-term protection for both new and damaged equipment. It uses special composite and structural coatings in conjunction with technical processes to individually address corrosion problems. With a focus on quality, refurbishment procedures are a proven, cost-effective weapon to win the battle against corrosion in the long term.