We are not aware of any specific applications of shotcrete to glass. The glass would have to be tough or strong enough to withstand the sprayed application. We have seen shotcrete stick to smooth surfaces like glass and glossy paint, but have not seen any data on the bond. In general terms, better bond is achieved with roughened surfaces so sandblasting the glass would likely improve the bond.
Is it possible to apply shotcrete on glass? Can shotcrete or concrete bond with glass? If it is an issue due to the smooth surface properties of glass, will sandblasting help? We have made test holes and it is adhered very well, except where moisture penetration through the parapet has compromised adhesion. This is installed with five layers approximately 1 in. (25 mm) thick. We are considering leaving the material in place, patching as required, and removing the existing nonpermeable paints (which are peeling). Our thought is to coat the surface with a variegated colored stain, allowing for permeability of vapor. Can the material be patched as necessary? What is the recommended finish? Do we need to be concerned that the material could permit water penetration? Are there certified contractors in the Cleveland, OH, area?
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