Waterless integral waterproofing
OwnerDavid T. Geary, Elizabeth Burns +1inventors
InventorsDavid T. Geary, Elizabeth Burns, Nathan A. Tregger
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Abstract
Described are admixture composition and method for integrally waterproofing cementitious compositions, such as concrete and mortar, wherein an organosilicon compound (e.g., silane) is mixed with animal oil, vegetable oil, or mixture thereof, and defoaming agent. The organosilicon/oil mixtures of the present invention enhances the water repellent efficacy of the organosilicon, even as it displays inherently greater product stability, as compared to emulsion-based (and thus substantial free-water containing) admixture formulations of the prior art. Cementitious materials made in accordance with the present invention demonstrate excellent air consistency and air neutrality.
Claims17
An admixture composition for integrally waterproofing a cementitious material, comprising:
- (A) an animal oil, a vegetable oil, or derivative thereof chosen from a C6-C30 fatty acid, an ester of C6-C30 fatty acids, an ethoxylated compound of C6-C30 fatty acid, C6-C30 fatty amine, C6-C30 fatty amide, tall oil derivative, or a mixture thereof;
- (B) an organosilicon having the structural formula chosen from
- wherein R1 R2 R3 R7 and R8 represent a C6 to C20 alkyl group, and R4, R5, R6, R9, R10, R11, and R12 each independently represent a C1 to C5 alkyl group;
- and
- (C) at least one air defoamer for detraining air from a hydratable cementitious composition, wherein the ratio (A:B) between components (A) and (B) is 99:1 to 50:50 based on weight of components;
- and
- wherein the ratio (B:C) between components (B) and (C) is 99.9:0.1 to 90:10 based on weight of components.
A cementitious composition comprising:
- (A) a cement;
- (B) an animal oil, a vegetable oil, or derivative thereof or mixture thereof;
- (C) an organosilicon having a structural formula chosen from
- wherein R1 R2 R3 R7 and R8 represent a C6 to C20 alkyl group, and R4, R5, R6, R9, R10, R11, and R12 each independently represent a C1 to C5 alkyl group;
- and
- (D) at least one air defoamer for detraining air in a hydratable cementitious composition;
- wherein the weight ratio (B:C) between components (B) and (C) is 99:1 to 50:50 based on weight of these components;
- wherein the weight ratio (C:D) between components (C) and (D) is 99.9:0.1 to 90:10 based on the weight of these components;
- and
- wherein the weight ratio (A:B+C+D) of component (A) to components (B), (C), plus (D) is 1:0.02 to 1:0.15 based on the weight of these components.
Dependencies are inferred from the claim text.