120m² of CC8^® used to formalise a drainage channel

In May 2018, investigations were carried out to establish the source of land drainage issues on a housing estate adjacent to a busy roundabout in Gilfach Goch, Wales. Dye investigations determined that the source of the water was an adjacent 40 linear metre runoff stream, which was at risk of compromising local ground stability. The informal stream was heavily overgrown and blocked at points with substantial debris and vegetation within the invert.

The specification of CC over traditional alternatives, such as pre-cast concrete or slabbed alternative solutions, meant the varying profile of the channel, a varying tree and fence line, and restricted access was easily accommodated. CC is also an environmentally friendly concrete alternative due to its low alkaline reserve and washout rate, which allow runoff to be discharged into live water courses without prior treatment.

The use of CC to line the channel will greatly increase its operational life, while controlling the water flow and preventing further drainage issues on the housing estate. CC provided a rapidly installed and low carbon solution to provide a robust yet environmentally sensitive protection to the surrounding properties. CC also requires minimal maintenance, which will be of great benefit to the client as a result of a great reduction in the requirement for future maintenance work on this difficult-to-access site.