Crack resistant coating and method of applying crack resistant coating
View Patent ↗The present invention relates to a method for applying a crack resistant coating on a surface, where the crack resistant coating increases resistance to high vertical and horizontal movements and high shear stresses on the surface. The method comprises the steps of applying a binding material to the surface and applying an aggregate mixture within 15 seconds of applying the binding material to the surface, where the aggregate mixture comprises aggregate particles and an asphalt solution and where the aggregate mixture has a plurality of air voids, and where the binding material fills at least 15% of the air voids in the aggregate mixture (AVFA).
1. A crack resistant coating disposed on a surface to provide resistance to high vertical and horizontal movements and high shear stresses, the coating comprising:
a first binding material layer disposed on the surface to provide a substantially impermeable moisture barrier to the surface;
a first aggregate mixture layer disposed on the first binding material layer, where the first aggregate mixture layer comprises aggregate and asphalt and where the first aggregate mixture layer is disposed on the first binding material layer within fifteen seconds of the first binding material layer being disposed on the surface, the first aggregate mixture layer providing support and structure to the coating to resist rutting;
a second binding material layer disposed on the first aggregate mixture layer, the second binding material layer further providing another substantially impermeable moisture barrier to the surface; and
a second aggregate mixture layer disposed on the second binding material layer, where the second aggregate mixture layer comprises aggregate and asphalt and where the second aggregate mixture layer is disposed on the second binding material layer within fifteen seconds of the second binding material layer being disposed on the first aggregate mixture layer, the second aggregate mixture layer providing a wear surface of the coating and additional structure and support to the crack resistant coating to resist rutting,
where the first binding material layer comprises binding material and the second binding material layer comprises the same binding material as the first binding material layer or different binding material than the first binding material layer.
2. The coating of claim 1 wherein the first and second aggregate mixtures comprise a plurality of air voids and where the first and second binding material fills a percentage of the air voids, and wherein the percentage of air voids filled with the first and second binding material is greater than about 15%.
3. The coating of claim 2 wherein the percentage of air voids filled with the first and second binding material is greater than about 18%.
4. The coating of claim 1 wherein the crack resistant coating has a depth that is flooded with the first and second binding material, and wherein the depth flooded with the first and second binding material is greater than about 0.38 cm.
5. The coating of claim 4 wherein the crack resistant coating has a depth that is flooded with the first and second binding binding material, and wherein the depth flooded with the first and second binding material is greater than about 0.46 cm.
6. A crack resistant coating disposed on a surface, the coating comprising:
a first layer comprising a first aggregate mixture and a first binding material, where the first aggregate mixture comprises aggregate, asphalt, and a plurality of air voids and where the first binding material fills substantially all of the air voids such that the first layer resists cracking; and
a second layer atop the first layer, the second layer comprising a second aggregate mixture and a second binding material, where the second aggregate mixture comprises aggregate, asphalt, and a plurality of air voids and a sufficient quantity of the air voids are not filled with binding material such that the second layer resists deformation and rutting;
where the first layer is created by first applying the first binding material on the surface and then applying the first aggregate mixture on the first binding material within fifteen seconds and the second layer is created by first applying the second binding material on the first layer and then applying the second aggregate mixture on the second binding material within fifteen seconds and where the first binding material is the same binding material as the second binding material or is different binding material than the second binding material.
7. The crack resistant coating of claim 6 where the aggregate mixture is applied within 10 seconds of applying the binding material to the surface.
8. The crack resistant coating of claim 6 where the aggregate mixture is applied within 5 seconds of applying the binding material to the surface.
9. The crack resistant coating of claim 6 where the first layer has a thickness greater than about 0.38 cm.
10. The crack resistant coating of claim 6 where the first layer has a thickness greater than about 0.46 cm.
11. The crack resistant coating of claim 6 where the coating has total air voids comprising the air voids in the first layer and the air voids in the second layer, combined, and where greater than about 15% of the total air voids are filled with binding material.
12. The crack resistant coating of claim 6 where the coating has total air voids comprising the air voids in the first layer and the air voids in the second layer, combined, and where greater than about 18% of the total air voids are filled with binding material.