Pre-treatment and cleaning of equipment used with uncured cementitious materials
First Claim
1. A system for treating equipment for mixing, placing or finishing a cementitious material, comprising:
- a composition comprising a colloidal silica, the composition formulated to enable the colloidal silica to prevent cementitious material from adhering to a surface of the equipment and/or to enable the colloidal silica to soften hardened and/or cured cementitious material to facilitate removal of the hardened and/or cured cementitious material from the surface of the equipment; and
abrasive particles capable of use with the composition.
5 Assignments
0 Petitions
Accused Products
Abstract
A composition for pretreating surfaces of equipment for use with an uncured cementitious material, such as uncured concrete, and/or for cleaning cured cementitious material from the surfaces of such equipment includes an aqueous solution with colloidal silica. Pretreatment of a surface with such an aqueous solution may reduce or eliminate adhesion of uncured cementitious material to the surface. Cured cementitious material may be removed from equipment surfaces by wetting the cured cementitous material with the aqueous solution to chemically soften the cured cementitious material, along with abrading the cured cementitious material to mechanically remove the same from the equipment surfaces. Systems for removing cured cementitious material from the surfaces of equipment configured to use with uncured cementitious material include an abrasive element and an aqueous solution with colloidal silica.
10 Citations
16 Claims
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1. A system for treating equipment for mixing, placing or finishing a cementitious material, comprising:
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a composition comprising a colloidal silica, the composition formulated to enable the colloidal silica to prevent cementitious material from adhering to a surface of the equipment and/or to enable the colloidal silica to soften hardened and/or cured cementitious material to facilitate removal of the hardened and/or cured cementitious material from the surface of the equipment; and abrasive particles capable of use with the composition. - View Dependent Claims (2, 3)
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4. A method for pre-treating equipment for mixing, placing or finishing a cementitious material, comprising:
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applying a composition comprising a colloidal silica to a surface of the equipment for mixing, placing or finishing concrete before exposing the surface to wet concrete; and with silica remaining on the surface in an amount that prevents concrete from adhering to the surface, exposing the surface to wet concrete. - View Dependent Claims (5, 6, 7, 8)
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9. A method for removing cementitious material from equipment configured for mixing, placing or finishing the cementitious material, comprising:
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applying a composition comprising a colloidal silica to a surface of the equipment for mixing, placing or finishing cementitious material, including applying the composition to any hardened cementitious material on the surface, an amount of colloidal silica in the composition capable of softening any hardened cementitious material on the surface; softening any hardened cementitious material on the surface with the colloidal silica of the composition; and after applying the composition to the surface and with silica remaining on the surface, abrading the surface. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification