Case Study: Refurbished Chemical Bund

ACC Flooring was asked by a long standing client to refurbish a chemical bund in their plant in Clitheroe.

The existing floor finish had been attacked over many years by the liquid chemicals stored & passing through the bund, consequently due to the poor condition of the substrate caused by chemical erosion some liquid was ponding & not flowing directly into the channel.

During the 1^st phase of the installation the floor finish was uplifted & removed & a heavy duty polymer modified cementitious screed laid to falls to the 97m² floor surface. Once the screed had cured the existing channel to 11.0m x 350mm wide x 140mm deep was prepared & the base, sides & shoulders made good with ACC Bulk & ACC Maintain. These products were also utilised to make good the damaged plinths & bases to the tanks.

ACC Bulk is a resin rich heavy duty polyurethane mortar which can be used at thicknesses of 10mm – 60mm as an infill or underlayment. ACC Maintain is a polyurethane concrete which can be used as a floor repair compound at thicknesses of up to 10mm. Both products have excellent chemical resistance properties.

The L shaped sump was shuttered using ACC PUH heavy duty polyurethane screed & once cured 2 coats of ACC DD polyurethane chemical resistant coating applied to the channel, plinths, tanks & sump. This product is the ideal coating solution in hostile environments offering enhanced chemical protection.

The scope of works to the 2^nd phase included the installation of ACC PUH heavy duty polyurethane screed to the floor area. This product is the optimum product in these locations offering very high chemical resistance, a seamless finish with high abrasion & a slip resistant textured profile.

The work to 11Nr plinths & 4Nr tanks included the installation of a seamless polyurethane render perfect for vertical surfaces & finished with water based polyurethane grout which amongst its properties includes a fill for any pin holes or voids in the surface.

2 coats of a high build epoxy coating was applied to the bund perimeter wall @ 400mm high to enhance the bund protection & eliminate any potential loss of containment.

The project was completed within the agreed timescale during the plant shutdown avoiding any loss of production.