Waterproofing concept

Water Industry - Dirty Water Sector

The dirty sector of the Water Industry has its own highly demanding requirements and chemical resistance to raw sewage is amongst the most important. Another related problem arises from bacterial activity in sewage creating gasses that dissolve in water to produce strong acids. These often lead rapidly to the deterioration of concrete and the subsequent corrosion of steel.

Flexcrete’s products for the dirty water sector are designed to provide engineers with the ultimate solution to these problems as well as to those generally associated with deteriorating structures in highly aggressive environments. The Company’s water-based, cementitious polymer and epoxy modified coatings are impermeable to water and form a durable, protective surface on both concrete and metal substrates with excellent chemical resistance. They also exhibit high diffusion resistance to oxygen, carbon dioxide and chloride ions, ensuring effective long-term protection against the principal causes of corrosion. Furthermore, most of the systems can be applied directly to the substrate without the use of primers, and can be effectively applied in both damp and dry conditions.

CORROSION PROTECTION

For the protection of ferrous metals, Flexcrete offers Cemprotec E942 — a cementitious and epoxy modified polymer coating which has excellent diffusion resistance to all the fuels for corrosion. It can be used on damp substrates in a wide temperature range and, unlike conventional anti-corrosion systems, can be applied directly to structural steel with minimal surface preparation and without the need for primers. E942 forms a dense, highly alkaline environment which, in conjunction with corrosion inhibitors, accelerates the re-passivation of steel by chemical reaction. In this way, long term protection is provided.

APPLICATION AREAS

Flexcrete’s products are suitable for the repair and protection of many structures in the dirty water sector:

Aeration tanks	Primary settlement tanks
Digester tanks	Sludge tanks
Filter plants	Spillways
Final filtration tanks	Storm water tanks
Flume channels	Support chambers
Humus tanks	Weirs