The condition of the manholes varied with some requiring sealing against infiltration before being coated with a protective coating.
The project was completed by Interflow’s Coatings Division, who restored the manholes by applying Interchem CAC - a proprietary calcium aluminate cement product from Quadex.
Interchem CAC was installed by spraying in thicknesses from 12 mm to 25 mm.
Calcium aluminate cement is a cost effective alternative to epoxy and other polymeric products.
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Interflow’s work method includes a range of checks to ensure that the surface is hard enough, clean enough and is acid-neutral before application of the Quadex calcium aluminate cement coating commences.
Interflow’s Coatings Division was formed to concentrate the specialist skills required to complete rehabilitation works on deteriorated underground concrete structures. Divisional personnel are qualified to work in confined spaces and are experienced in undertaking condition assessment, making rehabilitation recommendations and delivering the agreed solution.
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