Chemically Resistant Bund Lining
An existing 1960’s bund around a water treatment plant was lined with mastic asphalt which had been coated several times. The bund contained spillages of 12% hydrochloric acid and other aggressive chemicals and salts. Over the years chemical spills had severely attacked the bund lining which had failed and the concrete slab under the lining had also been badly attached by the chemicals.
The bund was on the second floor and, when washed down, water and chemicals leaked through the slab into the production area below.
It was obvious that urgent remedial action was necessary but the area was critical to production and could not be shut down except at Christmas.
What Did the Customer Want to Achieve from the Remedial Work?
- Permanent reinstatement of the bund lining to provide a chemically resistant, non-slip, easy clean surface.
- Elimination of leaks to the floor below.
- No loss of production.
- No noxious odours from the products used so that other essential maintenance work could be carried out simultaneously in the area without disruption.
- Reinstatement of the drains.
Stonhard Single Source Solution
- Carry out the work between the Christmas and New Year during plant shutdown using very low odour Stonhard products.
- Removal and decommissioning of as much equipment as possible to clear the area (by the customer).
- Physical removal of all the existing asphalt lining. Break out and clear all damaged concrete and drains. Thoroughly clean the area.
- Mix and install large quantities of Stonhard’s epoxy concrete Stonset TG4 to repair the concrete slab and reform drains. Allow to cure minimum five hours.
- Mix and trowel 6mm of Stonhard’s ultra chemically resistant epoxy mortar Stonclad HT to floors, plinths and drains and install integral seamless coves. Allow to cure minimum eight hours.
- Seal all Stonclad HT surfaces with Stonkote HT4 chemically resistant coating with light texture No.2. Allow to cure minimum eight hours.
- Install (sister company) Fibergrate fibreglass grating and hand area back to customer.
Total install time five days - customer requirements all met.
