The condition of Centenary Quay required a comprehensive and technically coordinated intervention addressing both reinforced concrete and steel elements in a challenging tidal environment. Cracking and spalling were evident to the concrete beams and soffits beneath the deck, water ingress was occurring through the deck slab, and corrosion had initiated to the steel sheet piled wall. CRL developed a repair methodology that combined deck waterproofing, concrete repairs and long-term corrosion protection.
Works commenced on the top deck with remedial repairs to existing movement joints. This involved planing out a 450 mm wide strip along the joints and installing a bitumastic compound to reseal the deck and prevent further water ingress. Cracks within the deck were sealed using epoxy resin injection, restoring continuity and reducing pathways for moisture and chlorides. A corrosion inhibitor was then applied across the entire deck surface to provide additional protection to the embedded reinforcement.
To the underside of the quay, defective concrete was removed using hydrodemolition, allowing precise breakout without damaging sound material or reinforcement. Reinstatement was carried out using sprayed concrete, restoring the original profile and structural capacity of the beams and soffits. Access for these works was achieved through the design and installation of a fixed hanging scaffold positioned above high tide level, enabling safe and efficient working throughout the tidal cycle.
A key element of the project was the introduction of a sacrificial anode cathodic protection system to arrest corrosion of the steel sheet piled wall. Along the length of the quay, 280 aluminium alloy anodes, each weighing approximately 40 kg, were welded to the sheet piles during low tide when the mud level was exposed. Above mid tide level, the sheet piling was hydro-blasted to remove corrosion products and prepared for the application of a protective bitumen coating. This integrated approach demonstrates CRL’s expertise in complex marine concrete repairs and structural repairs UK, delivering durable solutions aligned with long-term asset management objectives.
