Paignton Zoo Environmental Park

Hanson Concrete supplied 200 cubic metres of watertight concrete to this project.
Structural Engineers Winward Dexter specified Sika Watertight Concrete for the five pool enclosures within the swamp – an ideal and cost effective solution in fulfilling the design brief.

The concrete mix used significantly reduced the volume of water needed in the concrete production whilst offering the possibility of high workability. This in turn reduces the volume of capillary pores within the concrete matrix. The mix used blocked the remaining capillary pores to achieve a watertight concrete, effective to 10 bar pressure; equivalent to 100 metres head of water.The mix used  holds a BBA certificate, has a 50 year track record and is offered with a Sika backed warranty.

The construction joints were taken care of with the Sikaswell® jointing system, which consists of joint sealing profiles that expand on contact with water to seal any voids between adjoining concrete slabs.