METHOD AND APPARATUS FOR REPAIRING CONCRETE

• US 20120110940A1
• Filed: 11/04/2010
• Published: 05/10/2012
• Est. Priority Date: 11/04/2010
• Status: Active Grant

• Current Assignee: Garland Industries Incorporated (The Garland Company, Inc.)
• Original Assignee: Garland Industries Incorporated (The Garland Company, Inc.)
• Inventors: HEMPHILL, WILLIAM SCOTT
• Granted Patent: US 9,194,140 B2
• Time in Patent Office: Days
• US Class Current: 52/514
• CPC Class Codes: E04C 5/073 Discrete reinforcing elements, e.g. fibres
• CPC Class Codes: E04C 5/16 Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups E04C5/06 takes precedence; tools connecting reinforcing elements E04G21/12
• CPC Class Codes: E04G 2023/0251 by using fiber reinforced plastic elements
• CPC Class Codes: E04G 2023/0262 Devices specifically adapted for anchoring the fiber reinforced plastic elements, e.g. to avoid peeling off
• CPC Class Codes: E04G 23/0218 Increasing or restoring the load-bearing capacity of building construction elements E04G23/0203 and E04G23/0266 take precedence

Abstract

An improved anchor for securing a reinforcement strip to a concrete structure.

Claims

1. A reinforcing arrangement for a load-bearing or load-transmitting structural component comprising a reinforcement strip and an anchor, said anchor comprising first and second fabric layers, said anchor including a top and a bottom portion, said bottom portion inserted into a hole or slot of said structural component, said first and second fabric layers connected together at said bottom portion, said first and second fabric layers forming first and second flap portions that lie on or over a surface of said structural component, said reinforcement strip connected to said surface of said structural component and to at least one of said first and second fabric layers, at least a portion of said first and second fiber layers not connected together at said top portion of said anchor.

2. The reinforcing arrangement as defined in claim 1, wherein said anchor includes third and fourth fabric layers, said first, second, third, and fourth fabric layers connected together at said bottom portion, said first fabric layer connected to said third fabric layer at said top portion, said second layer connected to said fourth fabric layer at said top portion.

3. The reinforcing arrangement as defined in claim 2, wherein said first and second fabric layers include carbon fibers, said third and fourth fabric layers include glass fibers, said first and second fabric layers including a different material than contained in said third and fourth fabric layers.

4. The reinforcing arrangement as defined in claim 1, wherein said anchor has a longitudinal length, width and thickness, said width of said anchor greater than said thickness of said anchor, said longitudinal length of said anchor greater than said thickness of said anchor, a longitudinal length of said top portion greater than a longitudinal length of said bottom portion.

5. The reinforcing arrangement as defined in claim 1, wherein said fabric layers are connected together at said bottom portion by an adhesive that is partially or fully cured prior to said bottom portion inserted into said hole or slot of said structural component, said bottom portion adhesive having a different composition from an adhesive used to connect said top portion of said anchor to said reinforcement strip, said surface of said structural component, or combinations thereof.

6. The reinforcing arrangement as defined in claim 1, wherein said hole or slot in said structural component has a depth, length and width, said length of said hole or slot greater than said width of said hole or slot.

7. The reinforcing arrangement as defined in claim 6, wherein said length of said hole or slot cut in a plane is parallel to, or perpendicular to a longitudinal axis of said reinforcement strip.

8. The reinforcing arrangement as defined in claim 1, wherein said reinforcement strip is connected to said top portion of said anchor such that a) a top surface of said reinforcement strip is connected to one or both of said flap portions, b) a bottom surface of said reinforcement strip is connected to one or both of said flap portions, or c) both a and b.

9. An anchor for use in securing a reinforcement strip to a load-bearing or load-transmitting structural component, said anchor comprising first and second fabric layers, said anchor including a top and a bottom portion, said first and second fabric layers connected together at said bottom portion, said first and second fabric layers forming first and second flap portions, at least a portion of said first and second fiber layers not connected together at said top portion of said anchor.

10. The anchor as defined in claim 9, wherein said anchor includes third and fourth fabric layers, said first, second, third, and fourth fabric layers connected together at said bottom portion, said first fabric layer connected to said third fabric layer at said top portion, said second layer connected to said fourth fabric layer at said top portion.

11. The anchor as defined in claim 10, wherein said first and second fabric layers include carbon fibers, said third and fourth fabric layers include glass fibers, said first and second fabric layers including a different material than contained in said third and fourth fabric layers.

12. The anchor as defined in claim 9, wherein said anchor has a longitudinal length, width and thickness, said width of said anchor greater than said thickness of said anchor, said longitudinal length of said anchor greater than said thickness of said anchor, a longitudinal length of said top portion greater than a longitudinal length of said bottom portion.

13. A method for reinforcing a load-bearing or load-transmitting structural component comprising:

providing a reinforcement strip;

providing an anchor, said anchor comprising first and second fabric layers, said anchor including a top and a bottom portion, said first and second fabric layers connected together at said bottom portion, said first and second fabric layers forming first and second flap portions, at least a portion of said first and second fiber layers not connected together at said top portion of said anchor;

forming a slot or hole in said structural component;

positioning said bottom portion of said anchor in said slot or hole;

adhesively securing said bottom portion in said slot or hole;

positioning said first and second flap portions on or over a surface of said structural component;

adhesively securing said reinforcement strip connected to said surface of said structural component; and

,

adhesively securing at least one of said first and second flap portions to said reinforcement strip.

14. The method as defined in claim 13, wherein said anchor includes third and fourth fabric layers, said first, second, third, and fourth fabric layers connected together at said bottom portion, said first fabric layer connected to said third fabric layer at said top portion, said second layer connected to said fourth fabric layer at said top portion.

15. The method as defined in claim 14, wherein said first and second fabric layers include carbon fibers, said third and fourth fabric layers include glass fibers, said first and second fabric layers including a different material than contained in said third and fourth fabric layers.

16. The method as defined in claim 13, wherein said anchor has a longitudinal length, width and thickness, said width of said anchor greater than said thickness of said anchor, said longitudinal length of said anchor greater than said thickness of said anchor, a longitudinal length of said top portion greater than a longitudinal length of said bottom portion.

17. The method as defined in claim 13, wherein said fabric layers are connected together at said bottom portion by an adhesive that is partially or fully cured prior to inserting said bottom portion into said hole or slot of said structural component, said bottom portion adhesive having a different composition from an adhesive used to connect said top portion of said anchor to said reinforcement strip, said surface of said structural component, or combinations thereof.

18. The method as defined in claim 13, wherein said hole or slot in said structural component has a depth, length and width, said length of said hole or slot greater than said width of said hole or slot.

19. The method as defined in claim 18, wherein said length of said hole or slot cut in a plane is parallel to, or perpendicular to a longitudinal axis of said reinforcement strip.

20. The method as defined in claim 13, wherein said reinforcement strip is connected to said top portion of said anchor such that a) a top surface of said reinforcement strip is connected to one or both of said flap portions, b) a bottom surface of said reinforcement strip is connected to one or both of said flap portions, or c) both a and b.