Sika has provided a long-term, environmentally-friendly solution to the complex and potentially dangerous restoration of a coastal slipway. The £1.2 million Mamhead Slipway in Exmouth, a ‘major technical undertaking’ on behalf of East Devon District Council (EDDC), reintroduced maritime access to the River Exe in the hope of increasing visitor numbers to the town.

EDDC, in conjunction with the contractors and structural engineers, turned to SikaFiber® Force 400 to help extend the service life of the slipway and provide a safer, cost-effective and high-performance alternative to traditional steel reinforcement. SikaFiber® Force 400 comprises a range of macro synthetic fibres which can be extruded, embossed and cut for use in a range of concrete applications. The system enhances the toughness of concrete, alleviating the need for steel mesh when used with the appropriate design.

Due to water level and tidal fluctuations, Mamhead Slipway works took place behind a cofferdam provided by interlocking sheet piles. This resulted in a highly-restricted working area with mobile plant operating alongside site operatives. However, significant health and safety hazards were eliminated for the workforce due to the availability of SikaFiber® Force 400. Had welded steel mesh reinforcement been specified, a crane would have been required to lift it into position, leading to potential disruption for drivers and pedestrians as well as causing a danger for on-site construction teams. SikaFiber® Force 400 offered a far more practical alternative.