Water resistant cementitious article and method for preparing same
First Claim
1. A method of preparing a water-resistant cementitious article comprising(a) preparing an aqueous siloxane dispersion comprising from about 4 wt. % to about 8 wt. % siloxane in water, wherein the aqueous siloxane dispersion comprises dispersed siloxane particles having an average particle size of less than about 50 microns, and does not comprise an emulsifier or dispersant;
- (b) combining the siloxane dispersion with a cementitious mixture to provide a cementitious slurry,(c) depositing the cementitious slurry onto a substrate, and(d) allowing the cementitious slurry to harden, thereby providing a water-resistant cementitious article.
1 Assignment
0 Petitions
Accused Products
Abstract
A fibrous mat-faced cementitious article comprising (a) a cementitious core, and (b) a first fibrous mat comprising polymer or mineral fibers and a hydrophobic finish on at least one surface thereof, wherein the hydrophobic finish is in contact with the cementitious core, and a method of preparing a fibrous mat-faced cementitious article, as well as a method of preparing a water-resistant cementitious article comprising (a) preparing an aqueous siloxane dispersion, wherein the dispersion comprises about 4 wt. % to about 8 wt. % siloxane, (b) combining the siloxane dispersion with a cementitious mixture to provide a cementitious slurry, (c) depositing the cementitious slurry onto a substrate, and (d) allowing the cementitious slurry to harden, thereby providing a cementitious article.
470 Citations
20 Claims
-
1. A method of preparing a water-resistant cementitious article comprising
(a) preparing an aqueous siloxane dispersion comprising from about 4 wt. % to about 8 wt. % siloxane in water, wherein the aqueous siloxane dispersion comprises dispersed siloxane particles having an average particle size of less than about 50 microns, and does not comprise an emulsifier or dispersant; -
(b) combining the siloxane dispersion with a cementitious mixture to provide a cementitious slurry, (c) depositing the cementitious slurry onto a substrate, and (d) allowing the cementitious slurry to harden, thereby providing a water-resistant cementitious article. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification