Clare Island Potable Water Reservoir

Project Overview

Clare Island Water Reservoir are a crucial part to the water system which supplies water to homes throughout the island. Over time, the structure exhibited signs of weathering, structural wear, and required essential repairs to maintain its integrity. Adrian Queally Ltd (AQL) was engaged to carry out a comprehensive refurbishment to the exterior of the water reservoirs on Clare Island, addressing both external and internal deterioration while applying protective coatings to prolong the structure’s lifespan.

client objectives

Ensure the longevity and structural integrity of the water reservoir. Conduct essential concrete repairs to prevent further deterioration. Apply protective coatings for weather resistance and long-term performance. Stop any leaks within the tanks Prevent future movement and cracking within tank Prevent any water ingress through the roof.

Scope of works

Surface Preparation Works – All external surfaces were subjected to a high-pressure clean-down to remove contaminants, debris, and surface deterioration. Concrete Repairs to Structural Ring Beam- Structural elements suffering from wear and minor damage were mechanically removed and repaired using high-performance cementitious repair mortars. Crack Injection- All the joints between the wall panels were crack injected to stop the treated water from leaking out of the tank. External Joint Filling- All joints between panels were solid filled and a protective coating was applied over. All roof joints and cracks were address with joint sealing solutions to stop water ingress. Movement Joint and Crack Sealing- All of the roof joints and cracks were solid filled and then a bandage system was applied to allow movement, while stopping any water ingress. Roof Surface Protection- The roof received a flexible, protective coating to resist environmental damage and extend the life of the concrete. External Protective Coating- The walls of the tank received a protective coating which will protect the tank from the harsh elements. Design & Installation of Steel Tension Bands- AQL designed and installed steel tension bands to help prevent any further movement or cracking within the tank

Challenges

Access- This tank was located on an Island with only a foot ferry service available daily. AQL therefore had to engage a specialist ferry company to transport the crew, equipment and vehicles across to the island to allow for works to be completed. Adverse Weather Conditions- The works had to be carried out during a scheduled time period, however due to the tank being located on a remote Island, the weather conditions were both very windy and wet. To accommodate the repairs during these conditions, AQL built an encapsulated structure around the tank to allow for works to be completed no matter the weather. Erosion to Tanks Exterior- Due to the harsh weather conditions the tank was experiencing off the coast, coatings were specified by AQL that would protect the structure in such conditions. Surface Contaminants & Deterioration: The presence of accumulated grime, biofilm, and pollutants on concrete surfaces necessitated a thorough high-pressure clean-down before coatings and repairs could be applied. Structural Weathering & Concrete Spalling: External concrete repairs were carried out using industry-approved repair mortars, ensuring structural elements regained their integrity.

Results

Structural Longevity: The repairs and protective coatings significantly enhanced the lifespan of the Clare Island, Water Reservoir, ensuring long-term durability. Weather Resistance: The joint sealing, concrete repairs, coatings and roof protection measures provided long-term resistance against harsh weather conditions, reducing maintenance requirements. Improved Aesthetic & Functional Integrity: The reservoir now appears revitalised, with a clean, reinforced exterior that enhances its structural performance. Prevention of Movement and Cracking: Due to the installation of the steel strengthening band around the 2 ring beams this will help to support the tank from excessive lateral stress, due to varying water levels

Conclusion

The successful completion of the Clare Island Water Reservoir refurbishment highlights AQL’s expertise in structural water infrastructure repairs. Through meticulous planning, industry-leading materials, and specialist application techniques, AQL delivered a high-quality, long-lasting solution that ensures the water reservoir remains operational and compliant for years to come.

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