Road repair material and methods

• US 20070203265A1
• Filed: 02/27/2006
• Published: 08/30/2007
• Est. Priority Date: 02/27/2006
• Status: Abandoned Application

• Current Assignee: Marketing Associates, Inc. (OneMagnify)
• Original Assignee: Marketing Associates, Inc. (OneMagnify)
• Inventors: Pharr, Bart
• Application Number:
  US11/363,224
• Publication Number:
  US 20070203265A1
• Time in Patent Office: Days
• US Class Current: 524/2
• CPC Class Codes: C04B 18/167 Recycled materials, i.e. waste materials reused in the production of the same materials
• CPC Class Codes: C04B 18/22 Rubber , e.g. ground waste tires
• CPC Class Codes: C04B 20/0048 Fibrous materials
• CPC Class Codes: C04B 2111/0075 for road construction
• CPC Class Codes: C04B 24/2611 Polyalkenes
• CPC Class Codes: C04B 24/2676 Polystyrenes
• CPC Class Codes: C04B 26/22 Natural resins, e.g. rosin
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete

Abstract

The present invention relates to a composition for the repair of damaged load bearing surfaces such as highways, runways, taxiways, parking lots and other asphaltic or concrete load bearing surfaces; a method of preparing such compositions and methods for the use of such compositions in repairing such load bearing surfaces. The composition of the present invention utilized reclaimed surfacing materials and reclaimed rubbers in combination with virgin rubbers, resin binders and extender oils.

Claims

1. A composition for the repair of damaged load bearing surfaces comprising in combination, (a) a reclaimed load bearing surface material selected from asphalt, concrete and combinations of asphalt and concrete, (b) a reclaimed rubber material, (c) a virgin rubber, (d) a resinous binder selected from natural resins and hydrocarboncious resins, and (e) an extender oil.

2. The composition of claim 1 wherein the reclaimed load bearing surface material is reclaimed asphalt.

3. The composition of claim 2 wherein the reclaimed asphalt is present in the final composition in the amount of 10 to 90 weight percent.

4. The composition of claim 1 wherein the reclaimed tire rubber is present in the final composition in an amount of 5 to 10 weight percent.

5. The composition of claim 1 wherein the virgin rubber is a synthetic rubber that is asphalt soluble to the extent of about 2 to 12 weight percent.

6. The composition of claim 5 wherein the virgin rubber is one selected from the group consisting of butadiene polymers, polybutadiene polymers, butadiene-styrene copolymers, styrene-butadiene-styrene copolymers and block copolymers, isoprene polymers, ethylene propylene rubbers, and ethylene propylene copolymers and terpolymers.

7. The composition of claim 6 wherein the virgin rubber is a styrene-butadiene-styrene block copolymer having a styrene content within the range of 25 to 30 percent by weight of the copolymer.

8. The composition of claim 1 wherein the resinous binder is a natural resin.

9. The composition of claim 1 wherein the resinous material is a hydrocarbonacious resin.

10. The composition of claim 1 wherein the resinous binder is present in the amount of 6 to 15 weight percent of the final composition.

11. The composition of claim 1 wherein the flash point of the extender oil is within the range of 280 and 500°

F.

12. The composition of claim 1 wherein the extender oil is one selected from the group consisting of aliphatic or napthenic oils.

13. The composition of claim 12 wherein the extender oil is present in the final composition in an amount of 1 to 7 percent by weight.

14. The composition of claim 1 wherein a fiber is included in the amount of 0.01 to 1.0 weight percent of the total weight of the composition of claim 1 plus such fiber.

15. The composition of claim 14 wherein the fiber is a glass fiber with the fibers having a length within the range of 20 to 200 millimeters.

18. A method of repairing damaged areas of load bearing surfaces such method comprising of introducing into a crevice in a load bearing surface, the composition of claim 1 under moldable conditions of above ambient temperature, smoothing the upper surface of such composition to the level of the surface of the surrounding load bearing surface, introducing across the top of the upper surface of said composition, a graded aggregate to impact resistance to such surface against sliding on such surface of wheels of load bearing vehicles traversing across such surface, applying pressure to the aggregate surface such as to crevice such aggregate to be adhered to said composition, allowing such composition to cool to ambient temperatures.

19. The method of claim 18 wherein the aggregate is one that has been graded to a size of between 0.1 to 12 mm.

16. A method of preparing a composition for the repair of damaged load bearing surfaces comprising:

the mixing together to an uniform consistency of;

(a) a reclaimed load bearing surface material selected from asphalt, concrete and asphalt/concrete combinations;

(b) a reclaimed tire rubber;

(c) a virgin rubber;

(d) a resinous binder selected from the group consisting of natural resins and hydrocarbonacious resins; and

(e) an extender oil.

17. The composition of claim 16 wherein the mixing is accomplished by preparing a pre-blend comprising (a) an extender oil selected from the group consisting of napthenic oils and aliphatic oils, and (b) a virgin rubber and separately, (c) a mixture of reclaimed load bearing surface materials selected from the group consisting of asphalt, concrete and asphalt/concrete mixtures, (d) a natural resin, and (e) reclaimed tire rubber, and then mixing together the pre-blend with said mixture under mixing conditions such as to create a uniform mixture in which the various constituents are uniformly dispersed throughout said resulting mixture.