Patent ID: 8097307
Filing Date: 2012-01-17
Classification: C04B

Abstract:
1. A method for strengthening stones and other construction materials comprising the following steps: mixing an alkoxysilane, a surfactant, water, ethanol and hydrochloric acid to form a sol which acts as a binder, wherein the concentration of the surfactant is less than its critical micelle concentration and wherein said alkoxysilane, surfactant, water, ethanol and hydrochloric acid are at concentrations such that they allow reaching the critical micelle concentration of the surfactant inside the stone or other construction material to be strengthened before a gelling process occurs and wherein said surfactant can be eliminated by evaporation at room temperature; impregnating the stone or other construction material to be strengthened with the prepared sol to form a gel, wherein the critical micelle concentration of the surfactant is reached inside the stone or other construction material to be strengthened; and drying the gel by evaporation of the water, ethanol and surfactant.