Case Study - Water Facility - AS Coatings

Case Study : Water Filtration Facility Bund

01. Brief
02. Preparation
03. Application A
04. Application B
05. Top Coat

01. Brief

Brief - Reason For Repair

Existing coating was failing and delaminating.
Concrete surface below was exposed in area.
Bund lining would not meet specifications for new tanks and processes.
Sump had completely delaminated and required action.

02. Preparation

Preparation

Bund needed to be ground to remove previous coating to prepare the concrete and open up capillaries for a stronger bond to the existing floor.
Expansion joints were cut and cleaned using a v blade then repaired using an epoxy compound to create a stronger joint.
All inconsistencies are filled with an epoxy mortar to ensure a level surface.

03. Application A

Application - Sealing Coat

A sealant coat was then applied to the entire surface area of the bund.
Now the area is sealed it helps prevent any penetration by chemicals.
Bumpy/rough areas are then sanded and vacuumed.
The bund is now ready for chemical-resistant coats.

04. Application B

Application - Chemical Coat

The chemical-resistant coating was applied in two separate coats.
After each coat wet film thickness measurements are taken.
500 Microns were needed for this application.

05. Top Coat

Top Coat - Walkway Installation

Now that the bund has been completed and tested an anti-slip walkway is to be installed in a traffic grey
Aggregate was broadcasted throughout the walkway to ensure an anti-slip surface
The walkway was taped up to ensure a perfect edge was achieved