U.S. patent application number 13/162495 was filed with the patent office on 2011-12-22 for method and material for repairing of cracks in pavement and other surfaces.
Invention is credited to Mykola Sherstyuk, Tymofiy Sherstyuk.
Application Number | 20110311307 13/162495 |
Document ID | / |
Family ID | 45328816 |
Filed Date | 2011-12-22 |
United States Patent
Application |
20110311307 |
Kind Code |
A1 |
Sherstyuk; Mykola ; et
al. |
December 22, 2011 |
Method and material for repairing of cracks in pavement and other
surfaces
Abstract
The present invention relates to a method of repairing cracks
and holes in pavement surfaces. This method involves filling a
crack or hole in a paved surface with a flexible crack filler mix
until the mix fills up the site and overlaps the edges of the
aperture to a predetermined amount. Thereafter, the method includes
the step of applying a zig-zag shaped mesh tape on top of the
filled crack. The extra layer of a crack filler mix gets applied on
top the zig-zag shaped mesh tape. Also disclosed is a material for
repairing a crack in a paved surface.
Inventors: |
Sherstyuk; Mykola; (Ottawa,
CA) ; Sherstyuk; Tymofiy; (Ottawa, CA) |
Family ID: |
45328816 |
Appl. No.: |
13/162495 |
Filed: |
June 16, 2011 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61356363 |
Jun 18, 2010 |
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Current U.S.
Class: |
404/75 ;
404/134 |
Current CPC
Class: |
E01C 11/005 20130101;
E01C 11/16 20130101 |
Class at
Publication: |
404/75 ;
404/134 |
International
Class: |
E01C 7/00 20060101
E01C007/00; E01C 11/16 20060101 E01C011/16 |
Claims
1. A method of repairing a crack in a pavement surface comprising
the steps of: cleaning the crack of debris; filling the crack with
first portion of "crack filler" material that is allowed to harden
to a solid state; applying an additional portion of "crack filler"
material to the sides of said opening; applying a zigzag shaped
tape over the filled crack and side portion of the filler material;
the zigzag shaped tape being formed from loosely connected mesh
segments that will follow the natural line of the crack; applying a
second portion of "crack filler" material over the laid zigzag
shaped tape and for a distance beyond side edges of said tape;
where the said distance is at least 1/32 inch; wherein said
hardened "crack filler" material remains reasonably flexible and
stretchable under temperatures between -45 C and +60 C. This allows
and facilitates contraction and expansion between 0.3% and 8% of
total width of said crack
2. A method of repairing a crack in a pavement surfaces recited in
claim 1, wherein the said "crack filler" material is water based
mix
3. A method of repairing a crack in a pavement surfaces recited in
claim 1, wherein the said "crack filler" material is a petroleum
emulsion
4. A method of repairing a crack in a pavement surfaces recited in
claim 1, wherein the said "crack filler" material is a polyepoxide
thermosetting polymer
5. A method of repairing a crack in a pavement surfaces recited in
claim 1, wherein the said "crack filler" material is a hot-melt
material, such as a liquefied rubber based compound as used by most
driveway repair contracting companies.
6. A method of repairing a crack in a pavement surfaces recited in
claim 1, wherein the said "crack filler" material of said first
portion is different type from said "crack filler" material of said
second portion
7. A method of repairing a crack in a pavement surfaces recited in
claim 1, wherein the additional portion of said "crack filler"
material is different type from said "crack filler" material of
said first portion
8. A material for crack repairs comprising a plurality of mesh
segments connected in a chain by connectors; wherein said segments
are in the same plane; wherein said connectors allow at least 10
degree rotation of said segments in the same plane against each
other; wherein said mesh sizes are between 5.times.5 and
30.times.30 of Tyler scale, said mesh is made out of a vinyl coated
fiberglass wire; said segments have minimum length of 1/6 in. and
maximum length of 5 in.; said segments have a rectangular shape;
said connectors are formed by stitching; said wire has gage from
BWG31 to BWG38
9. A material for crack repairs recited in claim 8 wherein said
mesh is made out of stainless steel wire
10. A material for crack repairs recited in claim 8 wherein said
mesh is made out of aluminum wire
11. A material for crack repairs recited in claim 8 wherein said
mesh is made out of iron wire
12. A material for crack repairs recited in claim 8 wherein said
mesh is made out of polymer wire
13. A material for crack repairs recited in claim 8 wherein said
connector is provided by stitching
14. A material for crack repairs recited in claim 8 wherein said
connector is provided by riveting
15. A material for crack repairs recited in claim 8 wherein said
connector is provided by spot melting
16. A material for crack repairs recited in claim 8 wherein said
connector is provided by applying of a barb
17. A material for crack repairs recited in claim 8 wherein said
plurality of mesh segments is created by rotary die-cutting of a
continues mesh tape.
18. A material for crack repairs recited in claim 8 wherein said
plurality of mesh segments is created by stamping of a continues
mesh tape
19. A material for crack repairs recited in claim 8 wherein said
plurality of mesh segments is wound on the roll
20. A material for crack repairs recited in claim 8 wherein said
plurality of mesh segments is folded to a stack
Description
CLAIM OF PRIORITY
[0001] This application claims priority under 35 USC Section 119(a)
from U.S. Provisional Application No. 61/356,363 filed Jun. 18,
2010. The above mentioned application is hereby incorporated by
reference in their entirety.
BACKGROUND OF THE INVENTION
[0002] The present invention is directed to a method and system for
repairing cracks or holes in a paved surface.
[0003] Various methods for repairing cracks and holes in paved
surfaces, concrete or asphalt roadways, driveways and recreational
surfaces, such as tennis courts, outdoor basketball courts,
volleyball courts and running tracks generally involve cleaning the
crack of loose debris and then filling the crack with a crack
filler material that hardens to a solid state, forming a smooth
surface with the surrounding pavement surface. This is more
economical than re-paving the entire section of pavement which may
contain only one or a few cracks.
[0004] However, such crack repair method is considered a temporary
repair since progressive maintenance must be applied because of
continued crack enlargement under changing environmental
conditions, including temperature and moisture fluctuations.
Repaired cracks continue to expand since current repair methods do
not address and alleviate the stresses that cause crack formation
and movement.
[0005] One attempt to lengthen and extend the repair times between
maintaining a repaired crack in a pavement, or other surface, is
applying a strong surface such as an adhesive fiberglass sheet
above the repaired crack. However, the fiberglass sheet, while
presenting a solid, hard surface, is also susceptible to tears and
cracks caused by movement and/or enlargement of the underlying
repaired crack.
[0006] In further attempts to address this problem, other crack
repair methods have been developed which follow a so-called
"slip-sheet" principle. In these methods, after the crack is
cleaned and filled with a crack filler to the surface level of the
surrounding pavement or recreational surface, a slip-sheet is
affixed to the top surface of the crack filler. One layer of sheet
material, was applied over the slip-sheet and adhered at peripheral
edges to the surrounding pavement or recreational surface. This
isolates the sheet from the slip-sheet thereby enabling the
slip-sheet to move with crack movement or enlargement without
generating stresses in the outermost sheet which could tear or rip
the outer sheet.
[0007] Several of these previously devised crack repair methods
make use of adhesive-back tape, such as "duct tape", which has a
non-adhering polyethylene outer surface. U.S. Pat. No.
6,450,729--Pavement surface crack repair method by Daniel C. Clapp
describes the crack repair method utilizing two 2-inch wide duct
tape strips which are applied side edge to side edge over a cleaned
and filled crack. The plastic backing of the duct tape prevents
adherence to overlaying sheets. Clapp applied an adhesive layer
over and beyond the duct tape for a predetermined width outside of
the outer periphery of the tape strips before applying a single
9-inch wide sheet of stretchable fabric. Another wider area of
adhesive is applied over the stretchable fabric sheet for adhering
a second, wider stretchable fabric sheet of approximately twice the
width as the first fabric sheet. After adhesive is applied to the
edges of the outermost stretchable fabric sheet, two 6-inch wide
strips of fiberglass sheet were applied to the side edges of the
outermost stretchable sheet. Early slip-sheet methods are disclosed
in U.S. Pat. Nos. 3,663,350 and 3,932,051.
[0008] Another method of crack repair using a "slip-sheet" utilizes
a tape material with a shiny outer surface, prepared from
polyethylene, Mylar, Teflon or other such materials, as disclosed
in U.S. Pat. No. 6,450,729. An adhesive tape, such as "duct tape",
which has a non-adhering polyethylene top surface, is one example
of a "slip-sheet" of this invention.
[0009] In an alternative method, which is disclosed in U.S. Pat.
No. 5,464,304, a liquid waterproofing material is applied directly
over the filled crack. This liquid waterproofing material dries
with a non-adhering top surface that isolates the crack from
additional materials placed over the non-adhering surface. Over
this non-adhering surface are secured several fabric layers
fastened together with acrylic binders. The key step in this
process,however, is the crack isolation step produced by the
application of the liquid waterproofing material to the
recreational court.
[0010] The process of U.S. Pat. No. 5,464,304 is similar to that of
U.S. Pat. No. 6,450,729 in that both rely on the application of a
non-adhering material to the recreational court or surface over
which other materials are placed. Many different types of materials
and adhesives may be applied over the slip-sheet or other
non-adhering surface to complete the crack repair. More advanced
crack repair method provides a "slip-sheet" between the filled
crack and an overlaying stretchable fabric layer wherein the fabric
layer is capable of stretching under stresses induced by crack
growth and reformation without rupturing the crack repair
patch.
[0011] While the described prior crack repair methods significantly
lengthens the time between maintenance to a repaired crack, these
methods still experience failures due to and caused by crack
reformation. Another very significant problem is related to a crack
shape. The crack shape does not normally allow the application of
straight, uniformly shaped, strips of overlaying material. Custom
shaped pieces of material, to follow the crack must be individually
cut which makes this method somewhat haphazard and time
consuming.
[0012] Thus, it would be desirable to provide an improved pavement
crack repair method which significantly reduces the reformation of
repaired cracks in pavement or other surfaces. It would also be
desirable to provide an improved crack repair method which allows
to repair cracks with any shape.
BRIEF SUMMARY OF THE INVENTION
[0013] The shortcomings and failings of the previously mentioned
methods as well as addressing other needs such as cost, simplicity,
ease-of-use and durability have been satisfied by the method of the
present invention being a method for the sealing of cracks in
pavement surfaces and roadways that utilizes a zigzag shaped "mesh
tape" material
[0014] More specifically, the method of the present invention
includes filling a crack or hole in a paved surface with a flexible
crack filler mix until the mix fills up the site and overlaps the
edges of the aperture to a predetermined amount. Thereafter, the
method includes the step of applying a zig-zag shaped mesh tape on
top of the filled crack. The extra layer of a crack filler mix gets
applied on top the zig-zag shaped mesh tape.Without being bound to
any particular theory or mechanism, it is believed that sealing
properties of process are enhanced by use of the zig-zag shaped
mesh tape.
[0015] It is another aspect of the invention that the zig-zag
shaped mesh tape material can consist of multiple mesh elements
loosely connected to each other.Mesh elements could be rotated
against each other to follow any shape of the pavement cracking
when applied on top of it.
[0016] It is another aspect of this invention that the zig-zag
shaped mesh tape material can consist of multiple elements each
having heat-melt adhesive applied to the bottom side. The adhesive
gets activated when a heat gun is applied on top of the tape.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is an overall view of invention when zig-zag shaped
mesh tape is created from rectangular elements.
[0018] FIG. 2 is an overall view of invention when zig-zag shaped
mesh tape is created from oval elements.
[0019] FIG. 3 is an overall view of alternative embodiment.
[0020] FIG. 4 is a diagram of the invented method of a pavement
crack repairs.
[0021] FIG. 5 is a schematic diagram of mesh element movement
against each other.
DETAILED DESCRIPTION OF THE INVENTION
[0022] FIG. 4 depicts a crack 406 in a pavement 401.The crack 406
is about two inches in depth and 1/4 inch wide. The method of the
present invention is preferably used with cracks of such a depth,
in various types of bituminous pavements, or cement concrete
pavements. However, the scope of the invention is not confined to
repair sites of such a depth and width.
[0023] In accordance with the method of the present invention, the
crack 406 in the pavement is filled with a flexible crack filler.
The term "crack filler" as used herein shall include petroleum
emulsions, asphalt emulsions or modifications to such emulsion,
acrylic emulsions,rubberized asphalt and epoxy mixtures, heat melt
fillers.
[0024] A suitable flexible crack filler that can be used in
conjunction with this invention is a product sold under the
trademark "Latex-ite Blacktop Crack Filler" by Dalton Enterprises,
Inc. of Cheshire, Conn. It is preferred that the crack filler used
in the process of the present invention has a viscosity range, as
will be understood by those skilled in the art on asphalt
emulsions' residue by ASTM Standard D-244 of 10 to 3,000 poises, at
60 degrees 50 C. (Celsius). (With respect to the CRF product,
conversion of cSt (Centistokes) viscosity of the CRF product at 60
degrees C. to poises is about 1 poise=100 cSt).
[0025] The crack 406 is filled with the crack filler until it
substantially overlaps onto the pavement surface 403 on each side
of the aperture. For example, but without being bound by the
example, the overlap may measure approximately 1/8to 1/4 inches or
further, as desired in a particular application. The overlapping
portions of crack filler are illustrated in the figure with
reference characters 403.
[0026] After the crack has been filled and overlaps the crack 406
in the pavement surface, the repairer will then cover the crack
with this invention, a zigzag shaped mesh tape. The term "zigzag
shaped mesh tape" as used herein shall include multiple mesh
elements, loosely connected to each other according to the FIG.
1.
[0027] Preferably mesh elements are loosely connected to each other
by, but not limited, to stitching. In certain circumstances, as
will be understood by those skilled in the art, various techniques
will be used to connect mesh elements, such as by use of plastic
barbs, fasteners, applying heat source for a short time to
connection spots and in-line die cutting. FIG. 3 depicts the Zigzag
shaped mesh tape created by in-line die cutting.
[0028] In preferred embodiment of this invention mesh elements are
made out of the vinyl coated fiberglass. Such materials are
available commercially. A suitable material is sold under the
trademark "Phifer Charcoal Fiberglass Screen" by PHIFER
Incorporated of Tuscaloosa, Ala. Other types of material can be
used, such as different types of plastics, fiberglass, polymer
covered fibreglass mesh, thin metal wire and woven materials.
[0029] Zigzag shaped mesh tape elements can be rectangular,
triangular, oval, or might have other shapes. For example, but
without being bound by the example, zigzag mesh element have oval
shape as it is shown on FIG. 2. It is desirable to have several
width sizes of the tape to cover cracks of different widths, each
performing the same functionality as described and achieving the
same result. For example, but without being bound by the example,
the base standard size of a zigzag mesh element is 2.5 in. wide and
3 in. long.
[0030] In preferred embodiment of this invention zigzag shaped mesh
tape is packaged in a 10 foot long roll with 3'' paper core. Other
methods of packaging can be used, such as folding of the zig-zag
shaped mesh tape.
* * * * *