Waterless Integral Waterproofing

• US 20190330110A1
• Filed: 04/30/2019
• Published: 10/31/2019
• Est. Priority Date: 04/30/2018
• Status: Active Grant

• Current Assignee: GCP Applied Technologies Inc. (Compagnie De Saint-Gobain)
• Original Assignee: GCP Applied Technologies Inc. (Compagnie De Saint-Gobain)
• Inventors: Geary, David T., Burns, Elizabeth, Tregger, Nathan A.
• Granted Patent: US 10,851,019 B2
• Time in Patent Office: Days
• CPC Class Codes: C04B 2103/30 Water reducers, plasticisers, air-entrainers, flow improvers
• CPC Class Codes: C04B 2103/302 Water reducers
• CPC Class Codes: C04B 2103/50 Defoamers, air detrainers
• CPC Class Codes: C04B 2111/27 Water resistance, i.e. waterproof or water-repellent materials
• CPC Class Codes: C04B 24/003 Phosphorus-containing compounds
• CPC Class Codes: C04B 24/005 Halogen-containing compounds
• CPC Class Codes: C04B 24/08 Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
• CPC Class Codes: C04B 24/10 Carbohydrates or derivatives thereof
• CPC Class Codes: C04B 24/20 Sulfonated aromatic compounds
• CPC Class Codes: C04B 24/2641 Polyacrylates; Polymethacrylates
• CPC Class Codes: C04B 24/2647 containing polyether side chains
• CPC Class Codes: C04B 24/32 Polyethers, e.g. alkylphenol polyglycolether
• CPC Class Codes: C04B 24/42 Organo-silicon compounds
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 40/0039 Premixtures of ingredients

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.

Claims

1. An admixture composition for integrally waterproofing a cementitious material, comprising:

(A) an animal oil, a vegetable oil, or mixture thereof;

(B) an organosilicon having the structural formula chosen from

2. The admixture composition of claim 1 wherein the ratio (A:

B) between components (A) and (B) is 98;

2 to 40;

60 based on weight of components.

3. The admixture composition of claim 2 wherein the ratio (A:

B) between components (A) and (B) is 95;

5 to 20;

80 based on weight of components.

4. The admixture composition of claim 1 comprising a vegetable oil chosen from rapeseed oil, sunflower oil, soy bean oil, castor oil, peanut oil, grape seed oil, corn oil (e.g., including corn germ oil), canola oil, coconut oil, linseed oil, sesame oil, olive oil, palm oil, almond oil, avocado oil, china wood oil, cocoa oil, safflower oil, hemp seed oil, walnut oil, poppy seed oil, oiticaca oil (e.g., obtained by expression from the seeds of the Brazilian oiticaca tree, Licania rigida), palm nut oil, perilla oil, pecan oil, tung oil, and pine tar oil.

5. The admixture composition of claim 1 comprising a vegetable oil containing a compound chosen from mono and diglycerides of C₆-C₃₀ fatty acids, esters of C₆-C₃₀ fatty acids, ethoxylated compounds of C₆-C₃₀ fatty acids, C₆-C₃₀ fatty amines, C₆-C₃₀ fatty amides, tall oil derivatives, or a mixture thereof.

6. The admixture composition of claim 1 comprising a vegetable oil chosen from canola oil, rapeseed oil, or mixture thereof.

7. The admixture composition of claim 1 wherein the organosilicon is a silane.

8. The admixture composition of claim 7 wherein the silane is octyltriethoxysilane.

12. A composition comprising:

a cement binder and the admixture composition of claim 1.

13. A method for integrally waterproofing a cementitious material, comprising:

introducing to a cement the admixture composition of claim 1.

9. The admixture of composition 1 wherein the air defoamer is chosen from tributyl phosphate (e.g., preferably tri-iso-butyl phosphate), a polyoxyalkylene, a glycol (e.g., polyethylene glycol), or a mixture thereof.

10. The admixture of composition 1, wherein the composition is devoid of hydroxyl groups.

11. The admixture of composition 1 further comprising admixture chosen from sugars, carbohydrates, water reducers (preferably lignin, naphthalene sulfonates or polycarboxylate ethers), or mixture thereof.

14. A cementitious composition comprising:

(A) a cement;

(B) an animal oil, a vegetable oil, or mixture thereof;

(C) an organosilicon having s structural formula chosen from