Extruded Cement Based Materials

• US 20170113971A1
• Filed: 06/05/2015
• Published: 04/27/2017
• Est. Priority Date: 06/05/2014
• Status: Active Grant

• Current Assignee: The Intellectual Gorilla GmbH
• Original Assignee: The Intellectual Gorilla GmbH
• Inventors: Andersen, Per Just, Daniels, Evan R.
• Granted Patent: US 10,538,459 B2
• Time in Patent Office: Days
• CPC Class Codes: B28B 11/16 for extrusion or for materials supplied in long webs
• CPC Class Codes: B28B 11/243 Setting, e.g. drying, dehydrating or firing ceramic articles B28B11/242 takes precedence
• CPC Class Codes: C04B 14/066 Precipitated or pyrogenic silica
• CPC Class Codes: C04B 14/42 Glass
• CPC Class Codes: C04B 16/06 fibrous
• CPC Class Codes: C04B 16/0633 Polypropylene
• CPC Class Codes: C04B 16/0641 Polyvinylalcohols; Polyvinylacetates
• CPC Class Codes: C04B 18/08 Flue dust , i.e. fly ash
• CPC Class Codes: C04B 18/146 Silica fume
• CPC Class Codes: C04B 18/24 Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper , cork
• CPC Class Codes: C04B 20/0048 Fibrous materials
• CPC Class Codes: C04B 2103/0079 Rheology influencing agents
• CPC Class Codes: C04B 2103/20 Retarders
• CPC Class Codes: C04B 2103/22 Set retarders
• CPC Class Codes: C04B 2111/00129 Extrudable mixtures
• CPC Class Codes: C04B 2111/40 Porous or lightweight materials
• CPC Class Codes: C04B 22/143 Calcium-sulfate
• CPC Class Codes: C04B 24/06 containing hydroxy groups
• CPC Class Codes: C04B 24/14 Peptides; Proteins; Derivatives thereof
• CPC Class Codes: C04B 24/38 Polysaccharides or derivatives thereof C04B24/243 takes precedence
• CPC Class Codes: C04B 24/383 : Cellulose or derivatives thereof
• CPC Class Codes: C04B 28/02 : containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 28/04 : Portland cements
• CPC Class Codes: C04B 28/14 : containing calcium sulfate cements gypsum-paper plates E04C
• CPC Class Codes: C04B 7/02 : Portland cement
• CPC Class Codes: Y02W 30/91 : Use of waste materials as fillers for mortars or concrete

Abstract

An extrudable cement-based material formed from a mixture that includes cement, water, gypsum, secondary materials, reinforcement fibers and rheology modifying agent. The extrudable cement-based material is a lightweight material that has a density in the range of about 1.4 to 2.4 g/cm³, a compressive strength in the range of about 5 to 100 MPa, and a flexural strength in the range of about 5 to 35 MPa. Note that the cement may contain gypsum such that the gypsum is not added to the mixture.

Claims

1. An extrudable cement-based material formed from a mixture comprising:

a cement in the range of about 0.1 to 88% by wet weight percent;

a gypsum in the range of about 0.1 to 88% by wet weight percent;

a secondary material in the range of about 0.1 to 50% by wet weight percent;

a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent;

a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent;

a water in the range of 10 to 60% of a total wet material weight; and

the mixture is extrudable.

2. The extrudable cement-based material as recited in claim 1, wherein the cement contains the gypsum and the gypsum is not added to the mixture.

3. The extrudable cement-based material as recited in claim 1, the mixture having a clay-like consistency.

4. The extrudable cement-based material as recited in claim 1, wherein:

the secondary material comprising sand, silica fume, fumed silica, fly ash, slag, rock, cellulose fiber, glass fiber, plastic fiber, polyvinyl alcohol (PVA) fiber, or a combination thereof;

the reinforcement fiber comprising cellulose fiber, glass fiber, polypropylene fiber, polyvinyl alcohol (PVA) fiber, Dolanit fiber, or a combination thereof; and

the rheology modifying agent comprising a polysaccharide, a polysaccharide derivative, a protein, a protein derivative, a synthetic organic material, a synthetic organic material derivative, or a combination thereof.

10. The extrudable cement-based material as recited in claim 1, further comprising a retarder in the range of about 0.1 to 8% by wet weight percent, and the retarder comprising sodium citrate, or a mixture of Plaster of Paris, sodium citrate and crystalline silica.

12. The extrudable cement-based material as recited in claim 1, the extrudable cement-based material having a density in the range of about 1.4 to 2.4 g/cm³, a compressive strength in the range of about 5 MPa to 100 MPa, and a flexural strength in the range of about 5 to 35 MPa.

5-9. -9. (canceled)

11. (canceled)

13. An extrudable cement-based material formed from a mixture consisting essentially of:

a cement in the range of about 0.1 to 88% by wet weight percent;

a gypsum in the range of about 0.1 to 88% by wet weight percent;

a secondary material in the range of about 0.1 to 50% by wet weight percent;

a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent;

a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent;

a water in the range of 10 to 60% of a total wet material weight; and

the mixture is extrudable.

14. (canceled)

15. A method for manufacturing an extrudable cement-based material comprising the steps of:

mixing a cement in the range of about 0.1 to 88% by wet weight percent, a secondary material in the range of about 0.1 to 50% by wet weight percent, a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent, and a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent with water in the range of 10 to 60% of a total wet material weight, wherein the cement contains a gypsum in the range of about 0.1 to 90% by wet weight percent or the gypsum is mixed with the water or both;

extruding the mixture through a die using an extruder; and

allowing the extruded mixture to set.

18. The method as recited in claim 15, wherein the step of mixing the cement, the secondary material, the reinforcement fiber and the rheology modifying agent with the water comprises the steps of:

mixing the cement with water, wherein the cement contains the gypsum;

blending the cement-gypsum-water mixture with the secondary material and the reinforcement fiber; and

adding the rheology modifying agent to the mixture.

19. The method as recited in claim 15, wherein the step of mixing the cement, the secondary material, the reinforcement fiber and the rheology modifying agent with water comprises the steps of:

mixing the cement and the gypsum with the water;

blending the cement-gypsum-water mixture with the secondary material and the reinforcement fiber; and

adding the rheology modifying agent to the mixture.

20. The method as recited in claim 15, the mixture having a clay-like consistency.

21. The method as recited in claim 15, the step of extruding the mixture through the die using the extruder comprising the steps of:

conveying the mixture through a barrel using an auger; and

continuously forming the mixture into a final shape having form stability through the die using the extruder.

22. The method as recited in claim 15, wherein:

the secondary material comprising sand, silica fume, fumed silica, fly ash, slag, rock, cellulose fiber, glass fiber, plastic fiber, polyvinyl alcohol (PVA) fiber, or a combination thereof;

the reinforcement fiber comprising cellulose fiber, glass fiber, polypropylene fiber, polyvinyl alcohol (PVA) fiber, Dolanit fiber, or a combination thereof; and

the rheology modifying agent comprising a polysaccharide, a polysaccharide derivative, a protein, a protein derivative, a synthetic organic material, a synthetic organic material derivative, or a combination thereof.

28. The method as recited in claim 15, wherein the mixing step further comprises mixing a retarder in the range of about 0.1 to 8% by wet weight percent with the water, and the retarder comprising sodium citrate, or a mixture of Plaster of Paris, sodium citrate and crystalline silica.

30. The method as recited in claim 15, the extrudable cement-based material having a density in the range of about 1.4 to 2.4 g/cm³, a compressive strength in the range of about 5 MPa to 100 MPa, and a flexural strength in the range of about 5 to 35 MPa after being set, cured or dried.

31. The method as recited in claim 15, wherein the extruded mixture comprises an elongated sheet and further comprising the step of rolling the elongated sheet through one or more sets of calenders.

32. The method as recited in claim 31, further comprising the steps of:

cutting the elongated sheet into a set of individual sheets having a specified length;

stacking the set of individual sheets onto a pallet;

covering the stack with a plastic and an insulating material;

curing the stack by allowing the covered stack to sit for a specified time period; and

squaring up and sanding each individual sheet.

33. The method as recited in claim 32, wherein the specified time period is approximately 24 to 48 hours.

34. The method as recited in claim 15, wherein the extruded mixture is allowed to set for up to 2 to 3 hours.

35. The method as recited in claim 15, further comprising the step of curing or drying the extruded mixture.

37. The method as recited in claim 15, further comprising the step of molding, cutting, trimming, sanding or routing the extruded mixture into a specified shape.

38. The method as recited in claim 15, further comprising the step of spraying the extruded mixture with a water repellent.

39. The method as recited in claim 15, further comprising the step of applying one or more coatings or inks to the extruded mixture and wherein the one or more coatings or inks comprise a UV coating, a fire resistant coating, a color, an image, a texture or a combination thereof.

16-17. -17. (canceled)

23-27. -27. (canceled)

29. (canceled)

36. (canceled)

40. (canceled)