Project Profile: Uskmouth Power Station Project: Uskmouth Power Station, RC Gantry Investigation Client: Siemens The project: APA Concrete Repairs Ltd were called to site during major replacement works in the 500kV substation at Uskmouth Power Station, Newport, in order to conduct a survey & investigation of existing reinforced concrete gantries within the substation. There have been various historical cases of critical failure to similar type gantries that had been cast using High Alumina Cement (HAC) or chloride-based accelerators within the concrete mix. This was a significant concern to the Client who required confirmation as to whether their gantries contained high levels of chlorides or HAC, which would enable them to decide as to whether the existing gantries could

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