Flexcrete waterproofs secant piled basement

Flexcrete waterproofs secant piled basement

Flexcrete products were chosen for the Cotton Building in Manchester’s Spinningfields district. The project comprises 160,000ft2 of commercial office space and over 30,000ft2 of public amenity space.

Monolevel RM, a pre-bagged cementitious mortar for structural waterproofing, was specified due to its suitability for providing cost-effective, waterproof rendering of basement areas. Monolevel RM is a single pack material that is simply mixed with water onsite and is extremely quick and easy to apply by a single coat application.

For this project, the product was installed by wet spray techniques due to its usage over a very large area. It can be applied in thicknesses ranging from 5-50mm even on a vertical face and crucially, is resistant to 7 bar positive and negative hydrostatic water pressure at just 10mm applied thickness.

Monolevel RM conforms to the requirements of BS 8102:2009, the Code of Practice for Protection of Structures Against Water from the Ground. It provides the optimum ‘Grade 3’ completely dry environment. As Monolevel RM is fibre reinforced, it provides excellent tensile and impact strength, whilst preventing cracking. Its high bond strength exceeds the tensile strength of concrete and the physical properties of the cured material are similar to To ensure the required waterproofing was achieved at the critical detail points, Cemprotec

Elastic, a two component, elastomeric, cementitious coating was used. The product was applied by brush in two 1mm coats and was reinforced with Cemprotec Geo80, a thermally bonded, non-woven geotextile to help accommodate any differential movement. It cures to form a tough, durable barrier to water even from the negative side.base concrete.

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