A Sisk Lagan JV undertook the €50 million redevelopment of the existing harbour including; the construction of floodbarriers, breakwaters, quay walls; reclaiming land for the new marina basin; multi-user slipways for small craft; swing moorings for existing fishing vessels; reconfiguration of the beach in the existing harbour; a 230-berth marina; and coastal protection works. Concast were contracted to provide the coastal protection Precast wave return barrier which spanned approximately 850m along the quay wall. Concast manufactured complex steel moulds to create the individual units with the section profile of each unit having a recurved front face to form the wave return surface. A total of 852 units were required, the majority of which weighed 14T per unit. All units were manufactured utilising Zemdrain® CPF formwork liners which were attached to the formwork face facilitating the removal of excess air and water from the formwork / concrete interface during the concreting process thus resulting in a high quality concrete surface with significantly increased durability. A concrete mix incorporating GGBS was deigned by Concast in order to further enhance the durability and longevity of the wave return barriers. Sisk are longstanding client’s of Concast with numerous large scale projects completed together including Croke Park Stadium, an award winning residential development at St Annes Milltown Dublin and the HIX Holiday Inn Express Birmingham.
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