CN107165015A - A kind of reflection crack repairing structure and repair technology - Google Patents
A kind of reflection crack repairing structure and repair technology Download PDFInfo
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- CN107165015A CN107165015A CN201710470124.XA CN201710470124A CN107165015A CN 107165015 A CN107165015 A CN 107165015A CN 201710470124 A CN201710470124 A CN 201710470124A CN 107165015 A CN107165015 A CN 107165015A
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- 239000000835 fiber Substances 0.000 claims abstract description 37
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 24
- 239000002344 surface layer Substances 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 14
- 230000001804 emulsifying effect Effects 0.000 claims description 38
- 239000000843 powder Substances 0.000 claims description 27
- 239000004567 concrete Substances 0.000 claims description 23
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 19
- 239000011707 mineral Substances 0.000 claims description 19
- 239000010426 asphalt Substances 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 8
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/147—Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a kind of Reflection Cracking repairing structure and repair technology, the Reflection Cracking structure is layed in the crannied roadbase surface of tool, and the reflection crack repairs structure outwards includes the backfill bed of material, water-proof tack coat, fiber cloth crack-resistant layer, bituminous coating and asphalt concrete surface layer successively from the roadbase；The backfill bed of material includes the filler being filled in the crack on the roadbase surface, the water-proof tack coat applies the both sides located at the crack on the roadbase surface, and the fiber cloth crack-resistant layer is bonded in the surface of the water-proof tack coat and is covered in the top of the backfill bed of material.The Reflection Cracking structure of the present invention has the advantages that stability is good, non-deformability is strong, can effectively extend the service life on road surface.
Description
Technical field
The present invention relates to highway layout and technical field of construction, more particularly to a kind of reflection crack repairing structure and patcher
Skill.
Background technology
Cement concrete pavement is as a kind of primary structure form of high class pavement, and with intensity height, stability is good, use
The advantages of lasting a long time.Because the volume of traffic increases severely, the most of cement concrete pavement built in early days occurs in that different degrees of
Disease.When the road surface for disease occur is unable to reach use requirement, it need to be overhauled, Paving Bituminous Concrete surface layer or
Overlay new cement concrete pavement.
, it is necessary to prevent reflection crack during Paving Bituminous Concrete layer on Old cement concrete.Reflection crack is drip
A kind of defect phenomenon of blue or green road surface generally existing, as caused by the crack of the intrinsic transverse joint of former cement pavement, longitudinal joint and disconnected plate.This
Become the region of stress concentration of load action at a little cracks.Under traffic loading and the repeated action of environmental factor, crack is past
Upper extension, extension, ultimately form the reflection crack through asphalt surface course.After Asphalt Pavement Cracking, under rain erosion, directly make
Into the destruction of bituminous paving.
In order to prevent reflection crack, existing conventional method includes using impact grinding or smashes the road surface that there is disease
To eliminate reflection crack.Destructiveness can be produced to former pavement structure by adopting this method, and greatly reduce the bearing capacity on former road surface
And globality, and the effect of its Reflection Cracking is difficult to ensure that.
In order to prevent reflection crack, existing another processing method is local reinforcement restorative procedure, is not smashing or is beating
While splitting cement concrete pavement, the reflection crack of the asphalt overlay on Old cement concrete is prevented.Current state
Inside and outside conventional measure be mainly included between asphalt overlay and Old cement concrete lay earth grille,
Paving Singed non-woven fabrics and stickup modified asphalt felt.However, there is following defect in above-mentioned measure：Although the first, glass fibers
The tensile strength for tieing up GSZ is high, but it easily loosens in making, it is impossible to reach preferable Reflection Cracking effect, simultaneously
The effect of waterproof can not be reached；2nd, the tensile strength of Singed non-woven fabrics is relatively low, easily by drawing crack；3rd, modified asphalt felt
Needed to use in laying across seam pressure viscosity after flame projector melting, its difficulty of construction is higher, and tensile strength is low.
The defect existed in view of above-mentioned existing reflection crack repairing technique is, it is necessary to design a kind of simple, performance of constructing
Reliable reflection crack repairing structure and its repair technology, can effectively control reflection cracking in a pavement, extend the service life on road surface.
The content of the invention
The technical problem to be solved in the present invention is that the defect for overcoming existing reflection crack repairing to exist is applied there is provided one kind
Work is simple, the reflection crack of dependable performance repairs structure and its repair technology, can effectively control reflection cracking in a pavement, extends road surface
Service life.
In order to solve the above problems, the present invention provides a kind of reflection crack repairing structure, is layed in the crannied road of tool
Substrate surface, the reflection crack repairs structure outwards includes the backfill bed of material, water-proof tack coat, fibre successively from the roadbase
Tie up cloth crack-resistant layer, bituminous coating and asphalt concrete surface layer；The backfill bed of material includes being filled in the crack on the roadbase surface
In filler, the water-proof tack coat applies the both sides located at the crack on the roadbase surface, and the fiber cloth crack-resistant layer glues
Surface together in the water-proof tack coat and the top for being covered in the backfill bed of material.
Preferably, the length of the water-proof tack coat is more than or equal to the length in the crack on the roadbase surface,
The width of the water-proof tack coat located at crack both sides is respectively 10 centimetres~20 centimetres, and the thickness of the water-proof tack coat is
1 millimeter~5 millimeters.
Preferably, the raw material of the water-proof tack coat is made up of mineral aggregate, rubber powder and SBS modified emulsifying asphalts, the ore deposit
The component mass ratio of material, rubber powder and SBS modified emulsifying asphalts is (50~60)：(15~20)：100.
Preferably, the material that uses of the backfill bed of material is SBS modified pitch, the material that the bituminous coating is used for
SBS modified emulsifying asphalts, the material that the asphalt concrete surface layer is used is bitumen concrete.
Present invention also offers a kind of reflection crack repair technology, comprise the following steps：
Step one, the crack that cleaning roads substrate surface and the roadbase surface have；
Step 2, to the crack grouting filler, forms the backfill bed of material in the filling crack；
Step 3, water-proof tack coat is coated with the roadbase surface, along the both sides in the crack；
Step 4, lays fiber cloth crack-resistant layer on the water-proof tack coat, and through compaction treatment；
Step 5, in the fiber cloth crack-resistant layer surface spraying bituminous coating, in bituminous coating surface asphalt
Concrete surface layer.
Preferably, in the step 2, the filler is to be heated to 190 DEG C~220 DEG C of SBS modified pitch, described
Softening point >=85 DEG C of SBS modified pitch, elasticity recovers (25 DEG C) >=96%, anti-drawing strength >=1.0Mpa.
Preferably, in the step 3, the raw material of the water-proof tack coat is by mineral aggregate, rubber powder and SBS modified emulsifyings
Pitch is constituted, and the component mass ratio of the mineral aggregate, rubber powder and SBS modified emulsifying asphalts is (50~60)：(15~20)：
100。
Preferably, in the step 3, the preparation of the water-proof tack coat is by the way that mineral aggregate, rubber powder and SBS are changed
Property emulsified asphalt mixed according to the component mass ratio after, be heated to 180 DEG C~220 DEG C and mix pulp obtaining.It is preferred that
Ground, softening point >=75 DEG C of the SBS modified emulsifying asphalts evaporated residue, elasticity recovers (25 DEG C) >=90%, and anti-pulling is strong
Degree >=0.6Mpa.
Preferably, in the step 5, the bituminous coating uses SBS modified emulsifying asphalts, the SBS modified emulsifyings
Softening point >=75 DEG C of pitch evaporated residue, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6MPa.
Compared with prior art, the beneficial effects of the present invention are：By outwards being set gradually back from the roadbase
Packing layer, water-proof tack coat, fiber cloth crack-resistant layer, bituminous coating and asphalt concrete surface layer, form construction simple, dependable performance anti-
Reflection crack structure, has the advantages that stability is good, non-deformability is strong, the transverse joint that can have to former cement concrete pavement,
Effectively repaired in longitudinal joint and crack, i.e., described roadbase crack；Wherein, fiber cloth crack-resistant layer has high intensity, Gao Mo
The advantages of amount, chemical resistance, good height temperature stability, reflection crack is repaired structure and resist convergent force without being drawn
It is disconnected, effectively prevent the crack of roadbase from extending to road surface；The water-proof tack coat that painting is located at roadbase surface has well
Water resistance and enough cohesive forces；Using backfill the bed of material, water-proof tack coat, fiber cloth crack-resistant layer three combination, by return
The filling of packing layer fracture and resistance to deformation effect and the connection of fiber cloth crack-resistant layer effect, make the both sides in crack and crack again
An entirety is bonded to, the durability that reflection crack repairs structure is improved, so as to extend the service life on road surface.
Brief description of the drawings
Fig. 1 repairs the structural representation of structure for the reflection crack of the present invention；
Wherein, 1- roadbases, the 2- backfill bed of materials, 3- water-proof tack coats, 4- fiber cloth crack-resistant layers, 5- bituminous coatings, 6-
Asphalt concrete surface layer.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of invention.
A kind of reflection crack repairs structure, is layed in the crannied surface of roadbase 1 of tool, the reflection crack repairing knot
Structure outwards includes the backfill bed of material 2, water-proof tack coat 3, fiber cloth crack-resistant layer 4, the and of bituminous coating 5 successively from the roadbase 1
Asphalt concrete surface layer 6；The backfill bed of material 3 includes the filler being filled in the crack on the surface of roadbase 1, and the waterproof is glued
The both sides that layer 3 applies the crack for being located at the surface of roadbase 1 are tied, the fiber cloth crack-resistant layer 3 is bonded in the water-proof binding
The surface of layer 3 and the top for being covered in the backfill bed of material 2.
Reflection crack repairing structure based on above-mentioned technical characteristic, passes through returning for outwards being set gradually from the roadbase
Packing layer, water-proof tack coat, fiber cloth crack-resistant layer, bituminous coating and asphalt concrete surface layer, form construction simple, dependable performance anti-
Reflection crack structure, has the advantages that stability is good, non-deformability is strong；Wherein, fiber cloth crack-resistant layer has high intensity, Gao Mo
The advantages of amount, chemical resistance, good height temperature stability, reflection crack is repaired structure and resist convergent force without being drawn
It is disconnected, effectively prevent the crack of basic unit from extending to road surface；The water-proof tack coat that painting is located at roadbase surface has good waterproof
Performance and enough cohesive forces；Using backfill the bed of material, water-proof tack coat, fiber cloth crack-resistant layer three combination, pass through backfill material
The filling and resistance to deformation effect and the connection of fiber cloth crack-resistant layer effect of layer fracture, make the both sides in crack and crack bond again
Into an entirety, the durability that reflection crack repairs structure is improved, so as to extend the service life on road surface.
In the reflection crack repairing structure of the present invention, the roadbase 1 can have crannied cement stabilizing for surface
Great soil group semi-rigid type base, the roadbase 1 or the original former cement concrete pavement with cracks such as transverse joint, longitudinal joints.
The material that the backfill bed of material 2 is used especially is heated to 190 DEG C~220 DEG C of cementation of fissures heat for SBS modified pitch
Pitch, it is preferred that be heated to 200 DEG C~210 DEG C, softening point >=85 DEG C of the SBS modified pitch, elasticity recover (25 DEG C) >=
96%, anti-drawing strength >=1.0Mpa.The SBS modified pitch has the advantages that preferable high-temperature stability, non-deformability.
Wherein, elasticity recovery (25 DEG C) refers to elastic recovery rate of the pitch at 25 DEG C.
The length of the water-proof tack coat 3 is more than or equal to the length in the crack on the roadbase surface, described to set
It it is respectively 10 centimetres~20 centimetres in the width of the water-proof tack coat 3 of crack both sides, the thickness of the water-proof tack coat 3 is 1 milli
Rice~5 millimeters.It is preferred that the width of the water-proof tack coat 3 located at crack both sides is respectively 10 centimetres, the water-proof binding
The thickness of layer 3 is 2 millimeters.The raw material of the water-proof tack coat is made up of mineral aggregate, rubber powder and SBS modified emulsifying asphalts, described
The component mass ratio of mineral aggregate, rubber powder and SBS modified emulsifying asphalts is (50~60)：(15~20)：100.The SBS is modified
Softening point >=75 DEG C of the evaporated residue of emulsified asphalt, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6Mpa.Institute
Water-proof tack coat 3 is stated with good water resistance and enough cohesive forces, by the filling effect and fiber cloth that backfill the bed of material 2
The connection effect of crack-resistant layer 4, can be integral the crack on roadbase surface and crack two-side adhesive.
The fiber cloth crack-resistant layer 4 uses basalt fiber cloth material, it is preferred that the fiber cloth crack-resistant layer 4 is using profound
Military rock unidirectional fiber cloth material, basalt unidirectional fiber cloth has strengths in tension and compression height, high-modulus, chemical resistance, height
The advantages of low-temperature stability is good, unidirectional humidification is obvious.The width of the basalt fiber cloth is 10 centimetres~40 centimetres, compared with
Goodly, its width is 20 centimetres.The density of the basalt fiber cloth is 250~300g/ ㎡, it is preferred that its density is 280g/
㎡。
When roadbase contraction distortion, the scope of the contraction distortion of generation be generally 5 centimetres~10 centimetres it is more notable.
When being equipped with the roadbase surface shrinkage deformation of reflection crack repairing structure of the present invention, apply and be located at the roadbase surface
Water-proof tack coat 3 can with roadbase surface shrinkage, the fiber cloth crack-resistant layer 4 can resist can resist convergent force without
It can be pulled off, effectively prevent the crack of roadbase from extending to road surface, can effectively control reflection crack, improve asphalt concrete surface layer
Non-deformability.
The bituminous coating 5 is applied located at the surface of the fiber cloth crack-resistant layer 4, and the bituminous coating 5 uses SBS modified milks
Change pitch material, it is preferred that the softening point of the evaporated residue for the SBS modified emulsifying asphalts that the bituminous coating 5 is used >=
75 DEG C, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6Mpa.
The asphalt concrete surface layer 6 is layed in the surface of the bituminous coating 5, and the asphalt concrete surface layer 6 can use existing one
As the bituminous concrete material that is used of bituminous paving, including bituminous concrete (AC) and stone mastic asphalt etc.,
The bituminous concrete material belongs in the prior art, its ratio etc. is not described in detail herein.The asphalt concrete surface layer 6
Thickness be 7 centimetres~17 centimetres.
The present invention also provides a kind of reflection crack repair technology, and there is provided following the three of the reflection crack repair technology
Individual embodiment：
Embodiment one
In the present embodiment, the reflection crack repair technology comprises the following steps：
Step one, the crack that cleaning roads substrate surface and the roadbase surface have, is roused using compressed air
Blow or wire brush is cleaned or the mode such as water under high pressure hydro-peening clears up crack, and hand sweeping or mechanical cleaning roadbase table
Face, it is ensured that crack internal face dry cleansing and roadbase surface no-pollution, debris；
Step 2, to the crack grouting filler, forms the backfill bed of material in the filling crack, the filler is to be heated to
190~220 DEG C of SBS modified pitch, it is preferred that being heated to 200 DEG C~210 DEG C, softening point >=85 of the SBS modified pitch
DEG C, elasticity recovers (25 DEG C) >=96%, anti-drawing strength >=1.0Mpa；
Step 3, prepares water-proof tack coat, and water-proof binding is coated with the roadbase surface, along the both sides in the crack
Layer；The raw material of the water-proof tack coat is made up of mineral aggregate, rubber powder and SBS modified emulsifying asphalts, the mineral aggregate, rubber powder and
The component mass ratio of SBS modified emulsifying asphalts is 50：15：100, the preparation of the water-proof tack coat is by by mineral aggregate, rubber
After rubber powder and SBS modified emulsifying asphalts are mixed according to above-mentioned component mass ratio, 190 DEG C~220 DEG C are heated to, it is preferred that plus
Heat is mixed pulp and obtained to 200 DEG C~210 DEG C, softening point >=75 of the evaporated residue of the SBS modified emulsifying asphalts
DEG C, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6Mpa；
Step 4, after completion water-proof tack coat is coated with, promptly lays fiber cloth crack-resistant layer on the water-proof tack coat,
And compaction treatment is carried out using Small Tamping Machine, it is preferred that the fiber cloth crack-resistant layer uses basalt fiber cloth material, institute
The density for stating basalt fiber cloth is 250~300g/ ㎡, it is preferred that its density is 280g/ ㎡；
Step 5, in the fiber cloth crack-resistant layer surface spraying bituminous coating, in bituminous coating surface asphalt
Concrete surface layer, bituminous coating spray uses SBS modified emulsifying asphalts, the evaporated residue of the SBS modified emulsifying asphalts it is soft
Change point >=75 DEG C, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6MPa.
In the step 3, the miberal powder is less than 1.0mm fine aggregate using particle diameter, and the mesh number of the rubber powder is 60
~90 mesh.The length of the water-proof tack coat is more than or equal to the length in the crack on the roadbase surface；It is described to be located at
The width of the water-proof tack coat of crack both sides is respectively 10 centimetres~20 centimetres, it is preferred that its width is 10 centimetres；The waterproof
The thickness of tack coat is 1 millimeter~5 millimeters, it is preferred that its thickness is 2 millimeters.The water-proof tack coat has high viscosity high-elastic
Property characteristic, and repair ability is strong, and the decay with its function of time is small.
In the step 5, the asphalt concrete surface layer 6 is layed in the surface of the bituminous coating 5, the bitumen concrete face
The bituminous concrete material that layer 6 is used using existing general bituminous paving.The thickness of the asphalt concrete surface layer 6 be 7 centimetres~
17 centimetres, it is preferred that its thickness is 9 centimetres.
Embodiment two
In the present embodiment, the reflection crack repair technology comprises the following steps：
Step one, the crack that cleaning roads substrate surface and the roadbase surface have, is roused using compressed air
Blow or wire brush is cleaned or the mode such as water under high pressure hydro-peening clears up crack, and hand sweeping or mechanical cleaning roadbase table
Face, it is ensured that crack internal face dry cleansing and roadbase surface no-pollution, debris；
Step 2, to the crack grouting filler, forms the backfill bed of material in the filling crack, the filler is to be heated to
190~220 DEG C of SBS modified pitch, it is preferred that being heated to 200 DEG C~210 DEG C, softening point >=85 of the SBS modified pitch
DEG C, elasticity recovers (25 DEG C) >=96%, anti-drawing strength >=1.0Mpa；
Step 3, prepares water-proof tack coat, and water-proof binding is coated with the roadbase surface, along the both sides in the crack
Layer；The raw material of the water-proof tack coat is made up of mineral aggregate, rubber powder and SBS modified emulsifying asphalts, the mineral aggregate, rubber powder and
The component mass ratio of SBS modified emulsifying asphalts is 55：17：100, the preparation of the water-proof tack coat is by by mineral aggregate, rubber
After rubber powder and SBS modified emulsifying asphalts are mixed according to above-mentioned component mass ratio, 190 DEG C~220 DEG C are heated to, it is preferred that plus
Heat is mixed pulp and obtained to 200 DEG C~210 DEG C, softening point >=75 of the SBS modified emulsifying asphalts evaporated residue
DEG C, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6Mpa；
Step 4, after completion water-proof tack coat is coated with, promptly lays fiber cloth crack-resistant layer on the water-proof tack coat,
And compaction treatment is carried out using Small Tamping Machine, it is preferred that the fiber cloth crack-resistant layer uses basalt fiber cloth material, institute
The density for stating basalt fiber cloth is 250~300g/ ㎡, it is preferred that its density is 280g/ ㎡；
Step 5, in the fiber cloth crack-resistant layer surface spraying bituminous coating, in bituminous coating surface asphalt
Concrete surface layer, the bituminous coating spray uses SBS modified emulsifying asphalts, the softening of the SBS modified emulsifying asphalts evaporated residue
Point >=75 DEG C, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6MPa.
In the step 3, the miberal powder is less than 1.0mm fine aggregate using particle diameter, and the mesh number of the rubber powder is 60
~90 mesh.The length of the water-proof tack coat is more than or equal to the length in the crack on the roadbase surface；It is described to be located at
The width of the water-proof tack coat of crack both sides is respectively 10 centimetres~20 centimetres, it is preferred that its width is 10 centimetres；The waterproof
The thickness of tack coat is 1 millimeter~5 millimeters, it is preferred that its thickness is 3 centimetres.The water-proof tack coat has high viscosity high-elastic
Property characteristic, and repair ability is strong, and the decay with its function of time is small.
In the step 5, the asphalt concrete surface layer 6 is layed in the surface of the bituminous coating 5, the bitumen concrete face
The bituminous concrete material that layer 6 is used using existing general bituminous paving.The thickness of the asphalt concrete surface layer 6 be 7 centimetres~
17 centimetres, it is preferred that its thickness is 11 centimetres.
Embodiment three
In the present embodiment, the reflection crack repair technology comprises the following steps：
Step one, the crack that cleaning roads substrate surface and the roadbase surface have, is roused using compressed air
Blow or wire brush is cleaned or the mode such as water under high pressure hydro-peening clears up crack, and hand sweeping or mechanical cleaning roadbase table
Face, it is ensured that crack internal face dry cleansing and roadbase surface no-pollution, debris；
Step 2, to the crack grouting filler, forms the backfill bed of material in the filling crack, the filler is to be heated to
190~220 DEG C of SBS modified pitch, it is preferred that being heated to 200 DEG C~210 DEG C, softening point >=85 of the SBS modified pitch
DEG C, elasticity recovers (25 DEG C) >=96%, anti-drawing strength >=1.0Mpa；
Step 3, prepares water-proof tack coat, and waterproof is uniformly coated with the roadbase surface, along the both sides in the crack
Tack coat；The raw material of the water-proof tack coat is made up of mineral aggregate, rubber powder and SBS modified emulsifying asphalts, the mineral aggregate, rubber powder
Component mass ratio with SBS modified emulsifying asphalts is 60：20：100, the preparation of the water-proof tack coat be by by mineral aggregate,
After rubber powder and SBS modified emulsifying asphalts are mixed according to above-mentioned component mass ratio, 190 DEG C~220 DEG C are heated to, it is preferred that
It is heated to 200 DEG C~210 DEG C, and mixes pulp obtaining, softening point >=75 of the SBS modified emulsifying asphalts evaporated residue
DEG C, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6Mpa；
Step 4, after completion water-proof tack coat is coated with, promptly lays fiber cloth crack-resistant layer on the water-proof tack coat,
And compaction treatment is carried out using Small Tamping Machine, it is preferred that the fiber cloth crack-resistant layer uses basalt fiber cloth material, institute
The density for stating basalt fiber cloth is 250~300g/ ㎡, it is preferred that its density is 280g/ ㎡；
Step 5, in the fiber cloth crack-resistant layer surface spraying bituminous coating, in bituminous coating surface asphalt
Concrete surface layer, the bituminous coating spray uses SBS modified emulsifying asphalts, the softening of the SBS modified emulsifying asphalts evaporated residue
Point >=75 DEG C, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6MPa.
In the step 3, the miberal powder is less than 1.0mm fine aggregate using particle diameter, and the mesh number of the rubber powder is 60
~90 mesh.The length of the water-proof tack coat is more than or equal to the length in the crack on the roadbase surface；It is described to be located at
The width of the water-proof tack coat of crack both sides is respectively 10 centimetres~20 centimetres, it is preferred that its width is 10 centimetres；The waterproof
The thickness of tack coat is 1 millimeter~5 millimeters, it is preferred that its thickness is 3 centimetres.The water-proof tack coat has high viscosity high-elastic
Property characteristic, and repair ability is strong, and the decay with its function of time is small.
In the step 5, the asphalt concrete surface layer 6 is layed in the surface of the bituminous coating 5, the bitumen concrete face
The bituminous concrete material that layer 6 is used using existing general bituminous paving.The thickness of the asphalt concrete surface layer 6 be 7 centimetres~
17 centimetres, it is preferred that its thickness is 15 centimetres.
In the reflection crack repair technology of the present invention, the roadbase 1 can have crannied cement stabilizing for surface
Great soil group semi-rigid type base, the roadbase 1 or the original former cement concrete pavement with cracks such as transverse joint, longitudinal joints.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of technical solution of the present invention is not departed from, some improvement and replacement can also be made, these improve and replaced
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of reflection crack repairs structure, the crannied roadbase surface of tool is layed in, it is characterised in that：The reflection is split
Seam repairing structure outwards includes the backfill bed of material, water-proof tack coat, fiber cloth crack-resistant layer, bituminous coating successively from the roadbase
And asphalt concrete surface layer；
The backfill bed of material includes the filler being filled in the crack on the roadbase surface, and the water-proof tack coat is applied and is located at
The both sides in the crack on the roadbase surface, the fiber cloth crack-resistant layer is bonded in surface and the covering of the water-proof tack coat
In the top of the backfill bed of material.
2. reflection crack as claimed in claim 1 repairs structure, it is characterised in that：The length of the water-proof tack coat be more than or
Person is equal to the length in the crack on the roadbase surface, and the width of the water-proof tack coat located at crack both sides is respectively 10
Centimetre~20 centimetres, the thickness of the water-proof tack coat is 1 millimeter~5 millimeters.
3. reflection crack as claimed in claim 1 repairs structure, it is characterised in that：The raw material of the water-proof tack coat is by ore deposit
Material, rubber powder and SBS modified emulsifying asphalts composition, the component mass ratio of the mineral aggregate, rubber powder and SBS modified emulsifying asphalts
For (50~60)：(15~20)：100.
4. reflection crack as claimed in claim 1 repairs structure, it is characterised in that：The material that uses of the backfill bed of material for
SBS modified pitch, the material that the bituminous coating is used is SBS modified emulsifying asphalt, the material that the asphalt concrete surface layer is used
For bitumen concrete.
5. a kind of reflection crack repair technology, comprises the following steps：
Step one, the crack that cleaning roads substrate surface and the roadbase surface have；
Step 2, to the crack grouting filler, forms the backfill bed of material in the filling crack；
Step 3, water-proof tack coat is coated with the roadbase surface, along the both sides in the crack；
Step 4, lays fiber cloth crack-resistant layer on the water-proof tack coat, and through compaction treatment；
Step 5, in the fiber cloth crack-resistant layer surface spraying bituminous coating, in the bituminous coating surface asphalt concrete face
Layer.
6. reflection crack repair technology as claimed in claim 5, it is characterised in that：In the step 2, the filler is
190 DEG C~220 DEG C of SBS modified pitch is heated to, softening point >=85 DEG C of the SBS modified pitch, elasticity recovers (25 DEG C)
>=96%, anti-drawing strength >=1.0Mpa.
7. reflection crack repair technology as claimed in claim 5, it is characterised in that：In the step 3, the waterproof is glued
The raw material of knot layer is made up of mineral aggregate, rubber powder and SBS modified emulsifying asphalts, the mineral aggregate, rubber powder and SBS modified emulsifying asphalts
Component mass ratio be (50~60)：(15~20)：100.
8. reflection crack repair technology as claimed in claim 7, it is characterised in that：In the step 3, the waterproof is glued
Knot layer preparation be by by mineral aggregate, rubber powder and SBS modified emulsifying asphalts according to the component mass ratio mix after, heating
To 180 DEG C~220 DEG C and mix pulp and obtain.
9. reflection crack repair technology as claimed in claim 8, it is characterised in that：The SBS modified emulsifying asphalts evaporation is residual
Softening point >=75 DEG C of thing are stayed, elasticity recovers (25 DEG C) >=90%, anti-drawing strength >=0.6Mpa.
10. reflection crack repair technology as claimed in claim 5, it is characterised in that：In the step 5, the pitch is applied
Layer uses SBS modified emulsifying asphalts, and softening point >=75 DEG C of the SBS modified emulsifying asphalts evaporated residue, elasticity recovers (25
DEG C) >=90%, anti-drawing strength >=0.6MPa.
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| CN201710470124.XA CN107165015A (en) | 2017-06-20 | 2017-06-20 | A kind of reflection crack repairing structure and repair technology |
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| CN201710470124.XA CN107165015A (en) | 2017-06-20 | 2017-06-20 | A kind of reflection crack repairing structure and repair technology |
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ID=59819968
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| CN201710470124.XA Pending CN107165015A (en) | 2017-06-20 | 2017-06-20 | A kind of reflection crack repairing structure and repair technology |
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| CN109098063A (en) * | 2018-09-05 | 2018-12-28 | 中国葛洲坝集团公路运营有限公司 | A kind of asphalt roads reflection crack Treatment Methods and structure |
| CN111101418A (en) * | 2019-12-25 | 2020-05-05 | 广州珠江黄埔大桥建设有限公司 | Recyclable joint tape for cold joint treatment of asphalt pavement and use method thereof |
| CN111235997A (en) * | 2020-01-10 | 2020-06-05 | 陕西省高速公路建设集团公司汉宁分公司 | Asphalt pavement repairing method and asphalt pavement structure |
| CN111877104A (en) * | 2020-06-16 | 2020-11-03 | 中交第三公路工程局有限公司 | Construction method of modified rubber asphalt |
| CN115434207A (en) * | 2022-10-13 | 2022-12-06 | 江苏长路智造科技有限公司 | Reflection crack-free semi-rigid base pavement structure and construction method thereof |
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| CN115434207A (en) * | 2022-10-13 | 2022-12-06 | 江苏长路智造科技有限公司 | Reflection crack-free semi-rigid base pavement structure and construction method thereof |
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Application publication date: 20170915 |