Description of Process
The materials and equipment associated with the M Coating manhole rehabilitation system can also be utilised for wet spray application of specialised mortar coatings to the surfaces of man accessible sewers and other structures.

Typical Applications
Large size concrete or brick sewers and other structures where a corrosion protective coating is required.

Installation
The mortar is mixed to the correct consistency taking into account the diameter of the hoses and length of the delivery hose. A worm pump delivers the grout via a high pressure grouting hose to a spray head operated by compressed air.

A compressed-air spray-head used in a regular, circular movement is used to apply the mortar onto the surface.   During spraying, it is important to take care that the spray jet is always maintained vertically in relation to the substrate and at the appropriate distance from the wall.

Several passes are made when a thicker coating is specified.

Available Sizes
Man accessible structures.

Materials
The M-Coating wet spray system is suitable for a range of corrosion protection mortars based on both normal and calcium aluminate cements.