Reinforcement for a material made from a moldable composition

Patent metadata

Field	Value
Publication number	US-9803086-B2
Application number	US-201314391669-A
Country	US
Kind code	B2
Filing date	Apr 25, 2013
Priority date	Apr 26, 2012
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

Reinforcement for a material may be provided that includes a moldable composition, particularly for a building material, in which barley awns and seed parachutes, such as from bulrush seeds, are present as components in the reinforcement. The seed parachutes may comprise stem fibers and lateral fibers branching off therefrom, where the lateral fibers of the seed parachutes are connected to one another by the barley awns. The barley awns may have a weight proportion of approximately 0.1 to approximately 2 times, such as approximately 0.5 to approximately 1 time, higher than the weight proportion of the seed parachutes. A building material may be provided that includes the described reinforcement. A method for producing the building material may also be provided.

First claim

The invention claimed is:

1. A reinforcement for a material made from a moldable composition, the reinforcement comprising barley awns and parachutes of seeds, the parachutes including stem fibers and lateral fibers branching off therefrom, the lateral fibers of the parachutes joined to one another by the barley awns, and the proportion, by weight, of the barley awns to the parachutes is in a range from about 0.1 to about 2.

2. The reinforcement of claim 1 , wherein the barley awns are fragments having lengths that are within a range from about 2 mm to about 4 cm.

3. The reinforcement of claim 1 , wherein the stem fibers have a length of about 3 mm.

4. The reinforcement of claim 1 , wherein the reinforcement is included in a building material.

5. The reinforcement of claim 4 , wherein the building material is a render mixture which includes clay.

6. The reinforcement of claim 4 , wherein the building material is a mineral render and/or a synthetic resin render.

7. The reinforcement of claim 4 , wherein the building material further comprises leaf particles of cattail leaves.

8. The reinforcement of claim 4 , wherein the building material comprises a render mixture.

9. A method for producing the building material as claimed in claim 4 , the method comprising:
selecting the building material;
mixing the barley awns with the parachutes of seeds to form a mixture of the barley awns with the parachutes of seeds, wherein the proportion, by weight, of the barley awns to the parachutes in the mixture is in the range from about 0.1 to about 2; and
mixing the mixture of the barley awns and parachutes of seeds with the selected building material.

10. The method of claim 9 further comprising making the parachutes unable to germinate.

11. The method of claim 9 further comprising breaking up the barley awns before mixing with the parachutes so that the barley awns are present as fragments.

12. The method of claim 11 further comprising increasing a proportion of fragments in the mixture having a predetermined length by sieving.

13. The reinforcement of claim 1 , wherein the parachutes of seeds are parachutes of cattail seeds.

14. The reinforcement of claim 1 , wherein the proportion, by weight, of the barley awns to the parachutes is in a range from about 0.5 to about 1.

15. The reinforcement of claim 1 , wherein the lateral fibers of the parachutes have a length of about 10 mm.

16. The reinforcement of claim 1 , wherein the barley awns have lengths that are within a range from about 4 mm to about 8 mm.

17. A building material comprising a render mixture, barley awns, and parachutes of seeds, the parachutes including stem fibers and lateral fibers branching off therefrom, the lateral fibers of the parachutes joined to one another by the barley awns, and the proportion, by weight, of the barley awns to the parachutes is in a range from 0.5 to 1.

18. The building material of claim 17 , wherein the barley awns have lengths that are within a range from 4 mm to 8 mm.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Groβkinsky Theo
• Krus Martin
• Theuerkorn Werner

Classifications

• Y10T428/249921

  Web or sheet containing structurally defined element or component · CPC title

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• C04B28/001

  containing unburned clay (polymer binder - clay mixtures used in well cementing C09K8/44) · CPC title

• Y02W30/97

  Cross-Sectional Technologies · mapped topic

• C08L97/02 Primary

  Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)} · CPC title