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Pre-treatment and cleaning of equipment used with uncured cementitious materials

  • US 10,100,206 B1
  • Filed: 01/20/2015
  • Issued: 10/16/2018
  • Est. Priority Date: 01/20/2014
  • Status: Active Grant
First Claim
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1. A system for treating equipment for mixing, placing or finishing a cementitious material, comprising:

  • an aqueous composition consisting essentially of a colloidal silica, a stabilizer for enabling the colloidal silica to remain suspended at a pH of 10 or less, surfactant, and water, the aqueous composition formulated to include the colloidal silica in an amount that softens cementitious material that previously hardened and adhered to a surface of the equipment; and

    an abrasive element capable of removing cementitious material wetted and softened by the colloidal silica of the aqueous composition from the surface of the equipment.

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