Since construction, the lowest 4 construction joints in the inlet tower of Corin Dam had been leaking causing deterioration to the concrete structure, which ultimately would have threatened the assets structural integrity.

After multiple, unsuccessful, previous attempts to remediate the asset, NCS were engaged to provide a solution and installation that would repair the issue within the 60m deep water retaining structure and also will provide an extended service life to the asset.

NCS developed suitable safety measures within the limited access environment, being a 6m diameter structure.

Along with implementing specific measures an application technique was also developed using their extensive experience with the specific remediation products which allowed for the challenging conditions, deteriorated concrete and weeping water flows. A crystalline, fast-setting, hydraulic cement compound solution was provided in the first instance by NCS to quickly and efficiently stem the flow of water through the leaking construction joints.

Since the asset had been leaking for a large period of time, severe damage had occurred to the surrounding concrete. NCS provided a secondary application of a high build nature to resurface the deteriorating concrete along with a coating to fully waterproof and protect the concrete against the high hydrostatic pressures.

By utilising NCS’s Best Practice Management certifications, and associated procedures, NCS were able to create a safe work environment, ensuring safety access was implemented and that no incidents, accidents developed.