IP Library Granted Patent US 7,781,019
Granted Patent B2
US 7,781,019 · App. 11/724,452 · Granted Aug 24, 2010

Uniform texture for cast in place walls

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Quick Facts
Patent No.
US 7,781,019
App. No.
11/724,452
Granted
Aug 24, 2010
Kind
B2
Abstract

A method of forming a concrete wall having a substantially uniform exterior surface texture. The method includes the initial step of pouring concrete into a wall form. The concrete is poured from a first mixture and is allowed to cure. After the concrete is cured, the wall form is removed from the resultant concrete base structure. A roughened texture is then created on the base structure. A finishing mixture is then applied to the roughened texture. The finishing mixture may be created by separating the aggregate from a portion of the remaining first mixture. The finishing mixture creates a smooth texture on the exterior surfaces of the initially formed base structure.

Claims (35)

1. A method of forming a concrete structure comprising the steps of:

(a) pouring a first concrete mixture into a wall form, wherein the first concrete mixture includes large aggregate;

(b) curing the first concrete mixture to form a concrete base structure;

(c) removing the wall form from the base structure;

(d) creating a roughened exterior surface on the base structure;

(e) creating a finishing mixture by separating the large aggregate from a portion of the first concrete mixture; and

(f) applying the finishing mixture to the roughened exterior surface of the base structure.

2. The method of claim 1 , wherein the roughened exterior surface is created by applying a form retarder to the base structure.

3. The method of claim 1 , wherein the roughened exterior surface is created by applying a spray on retarder to the base structure.

4. The method of claim 1 , wherein the roughened surface is created by sand blasting the base structure.

5. The method of claim 1 , wherein the roughened surface is created by acid washing the base structure.

6. The method of claim 1 , wherein the roughened surface is created by chemically etching the base structure.

7. The method of claim 1 , further comprising the step of troweling the finishing mixture once applied to the base structure.

8. The method of claim 1 , further comprising the step of allowing the finishing mixture to cure.

9. The method of claim 8 , further comprising the step of acid washing the cured finishing mixture.

10. A method of forming a concrete structure comprising the steps of:

(a) pouring a first concrete mixture into a wall form, wherein the first concrete mixture contains large aggregate;

(b) curing the first concrete mixture to form a concrete base structure;

(c) removing the wall form from the base structure;

(d) creating a roughened surface on the base structure;

(e) creating a finishing mixture by separating large aggregate from a second mixture of concrete; and

(f) applying the finishing mixture to the roughened exterior surface of the base structure.

11. The method of claim 10 , wherein the roughened exterior surface is created by applying a form retarder to the base structure.

12. The method of claim 10 , wherein the roughened exterior surface is created by applying a spray on retarder to the base structure.

13. The method of claim 10 , wherein the roughened surface is created by sand blasting the base structure.

14. The method of claim 10 , wherein the roughened surface is created by acid washing the base structure.

15. The method of claim 10 , wherein the roughened surface is created by chemically etching the base structure.

16. The method of claim 10 , further comprising the step of allowing the finishing mixture to cure.

17. The method of claim 16 , further comprising the step of acid washing the finishing mixture.

18. A method of forming a concrete structure having a substantially uniform exterior surface texture, comprising the steps of:

(a) curing a first mixture of concrete including large aggregate to form a concrete base structure;

(b) creating a finishing mixture by separating the large aggregate from a portion of the first concrete mixture; and

(c) applying the finishing mixture to the base structure.

19. The method of claim 18 wherein step (a) comprises initially pouring the first mixture of concrete into a wall form.

20. The method of claim 18 wherein step (a) further comprises creating a roughened exterior surface on the base structure.

Assignments (3)
CHANGE OF NAME Recorded Jul 9, 2019
From: SHAW CRAFTSMAN CONCRETE, LLC
To: SHAW CRAFTSMEN CONCRETE, LLC
Reel/Frame 049706/0350 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 3, 2019
From: LITHOCRETE, INC.
To: SHAW CRAFTSMAN CONCRETE, LLC
Reel/Frame 049667/0102 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 15, 2007
From: SHAW, RONALD D.; SHAW, LEE A.
To: LITHOCRETE, INC.
Reel/Frame 019060/0544 →