Building with ultra stable cementitious material formulation

Patent metadata

Field	Value
Publication number	US-10897222-B2
Application number	US-201816211035-A
Country	US
Kind code	B2
Filing date	Dec 5, 2018
Priority date	Nov 7, 2017
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

A building with ultra-stable cementitious material with nano-molecular veneer has 29 wt % to 40 wt % of a magnesium oxide dry powder containing 80 wt % to 98 wt % of magnesium oxide based on a final total weight of the cementitious material, 14 wt % to 18 wt % of a magnesium chloride dissolved in water and reacting to form a liquid suspension, a phosphorus-containing material, and wherein the mixture forms a liquid suspension that reacts into an amorphous phase cementitious material, wherein a portion of the amorphous phase cementitious material grows a plurality of crystals. The plurality of crystals are encapsulated by the amorphous phase cementitious material forming a nano-molecular veneer and a wall material that is affixed to a frame of a building.

First claim

What is claimed is:

1. A building comprising walls comprising a cementitious material, wherein the cementitious material is the product of blending:
(i) 29 wt % to 40 wt % of a magnesium oxide dry powder, based on the final total weight of the cementitious material, containing 80 wt % to 98 wt % of magnesium oxide, the magnesium oxide having a surface area ranging from 5 meters 2 /gram to 50 meters 2 /gram and an average particle size of from about 0.3 to about 90 microns, and wherein more than about 90% by weight of the magnesium oxide particles have a particle size of less than or equal to about 40 microns;
(ii) 14 wt % to 18 wt %, based on the final total weight of the cementitious material, of a magnesium chloride dissolved in water;
(iii) 0.1 wt % to 10 wt %, based on the final total weight of the cementitious material, of a stabilizing material, the stabilizing material comprising:
1. an aqueous solution comprising 55 wt % to 65 wt % of phosphorous acid (H 3 PO 3 ); or
2. an aqueous solution comprising 80 wt % to 90 wt % of phosphoric acid (H 3 PO 4 );

wherein the cementitious material comprises an amorphous phase and a plurality of crystals, each of the plurality of crystals having a molecular weight within the range of 280 to 709, and being encapsulated by the amorphous phase of the cementitious material,
wherein a majority of stabilizing material is consumed during curing into a nano-molecular veneer over the plurality of crystals while increasing surface area of the plurality of crystals by 2% to 49%, and
wherein the nano-molecular veneer is insoluble in water and protects the plurality of crystals from degradation in water at temperatures from 20 degrees to 60 degrees Celsius for from 24 hours to 56 days.

2. The building of claim 1 , wherein the cementitious material further comprises 0.1 wt % to 30 wt % of an aggregate, based on the final total weight of the cementitious material, of an aggregate comprising particles having a diameter from 1 nm to 10 mm, wherein the aggregate comprises at least one selected from the group consisting of wood, perlite, styrene based foam beads, calcium carbonate powder, glass particulate, and combinations thereof.

3. The building of claim 1 , wherein the cementitious material further comprises 0.1 wt % to 2 wt %, based on the final total weight of the cementitious material, of a reinforcing material comprising a non-woven or woven silica containing mat, or a non-woven or woven hydrocarbon containing mat.

4. The building of claim 1 , wherein the cementitious material further comprises 0.1 wt % to 15 wt %, based on the final total weight of the cementitious material, of biomass.

5. The building of claim 4 , wherein the biomass is selected from the group consisting of rice husks, corn husks, and dung.

6. The building of claim 1 , wherein the cementitious material further comprises 0.1 wt % to 10 wt %, based on the final total weight of the cementitious material, of at least one surfactant that is effective to decrease the porosity of aggregate and to prevent the amorphous phase cementitious material from entering pores of the aggregate.

7. The building of claim 6 , wherein the surfactant is a detergent.

8. The building of claim 1 , wherein the cementitious material further comprises 0.1 wt % to 5 wt %, based on the final total weight of the cementitious material, of a re-dispersible powder polymer.

9. The building of claim 8 , wherein the re-dispersible powder polymer is selected from the group consisting of a silicone, a polyurethane dispersion, a polyurethane, a polymer of an alkyl carboxylic acid vinyl ester monomer, a polymer of a branched or unbranched alcohol ester of (meth)acrylic acid monomer, a polymer of a vinyl aromatic monomer, a polyolefin, a polydiene, a polyvinyl halide, and a copolymer of vinyl acetate and ethylene.

10. The building of claim 8 , wherein the cementitious material with nano-molecular veneer further comprises 0.1 wt % to 5 wt % based on the final total weight of the cementitious material, of an acrylic or a styrene butadiene rubber.

11. The building of claim 1 , wherein the cementitious material further comprises 0.1 wt % to 15 wt %, based on the final total weight of the cementitious material, of a reinforcing material selected from the group consisting of chopped silica containing fibers, hemp containing fibers, nano-molecular carbon fiber strands, chopped carbon fibers, and chopped hydrocarbon fibers.

12. The building of claim 11 , wherein the reinforcing material is chopped carbon fibers.

13. The building of claim 1 , the building comprising an exterior surface covered with the cementitious material.

14. The building of claim 1 , the building being selected from a home, an office, a warehouse, or shed.

15. The building of claim 1 , the building comprising a frame and the cementitious material being formed into panels attached to the frame of the building.

16. The building of claim 1 , the building comprising tile backer board prepared from the cementitious material, the tile backer board forming walls, the floor and/or the ceiling of the building.

17. The building of claim 1 , wherein the cementitious material is formed into boards which are then installed into the sides of the building.

18. The building of claim 17 , the boards comprising a substrate coated by the cementitious material, the substrate selected from oriented strand board, plywood, waterproof membrane, concrete, and wood.

Assignees

• Mitek Holdings Inc

Inventors

• Wambaugh James A
• Rochner Brett

Classifications

• E04B2/66

  characterised by special cross-section of the elongated members · CPC title

• E04B2/64

  with elongated members of concrete · CPC title

• E04B2/68

  made by filling-up wall cavities (E04B2/24, E04B2/38, E04B2/52 take precedence) · CPC title

• E04C2/288

  composed of insulating material and concrete, stone or stone-like material · CPC title

• E04C2/16

  of fibres, chips, vegetable stems, or the like · CPC title