PRODUCT NEWS
CELEBRATING 50 YEARS IN IRELAND FOSROC LOOKS BACK AT KEY PROJECT CASE STUDIES FROM RECENT YEARS... Oberstown Waste Water Treatment Plant
F osroc provided the solution to the concrete repair of Irish Water/AQL’s 40-year-old sedimentation tanks at Obserstown WWTP, Co Kildare. Fosroc produced a specification covering all concrete repairs, the overall coating of Renderoc ST05 throughout including the top section and the launder channel with Nitocote EN901 for full chemical protection. Following further inspection it was discovered that a significant amount of surface area with exposed aggregate required multiple layer applications of the repair mortars with Renderoc HB45 for the deeper areas and Renderoc ST05 for surface repairs. There were also a large number of blowholes that were predominantly filled with the Renderoc ST05. Once all compromised areas were repaired and fully coated, a final 2mm layer of Renderoc ST05 was applied. The
top metre of the internal tank wall and the launder channel received two coats of Nitocote EN901 each at 300 microns in thickness. All existing joint sealants were removed, joint surfaces repaired and resealed with Nitoseal MS600. THE BENEFITS The sedimentation tanks are back in service and will be protected for many years not only against the
Oberstown Waste Water Treatment Plant’s 40-year-old primary sedimentation tank.
mechanical action of the sewage being treated, but also against aggressive gases, which will build up inside these refurbished, enclosed tanks. The work was carried out by a competent, recommended concrete repair and coatings contractor AQL, supported by technical advice from Fosroc throughout
the whole refurbishment. The project was finished well ahead of schedule which allowed the steel and mechanical contractors an early hand over for subsequent works. For more information on Fosroc products call: +353 (01) 913 1050 or email: enquiry. ireland@fosroc.com
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