CN106436525A - Composite structure for suppressing reflection cracks of old cement concrete pavement and reconstruction method - Google Patents
Composite structure for suppressing reflection cracks of old cement concrete pavement and reconstruction method Download PDFInfo
- Publication number
- CN106436525A CN106436525A CN201610851203.0A CN201610851203A CN106436525A CN 106436525 A CN106436525 A CN 106436525A CN 201610851203 A CN201610851203 A CN 201610851203A CN 106436525 A CN106436525 A CN 106436525A
- Authority
- CN
- China
- Prior art keywords
- old
- old cement
- plate
- asphalt
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
-
- 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
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/06—Methods of making joints
Abstract
The invention discloses a composite structure for suppressing reflection cracks of an old cement concrete pavement. The composite structure comprises a base layer, an old cement slab laid on the base layer and an asphalt concrete overlay laid on the old cement slab, and also comprises a multi-scale hybrid-fiber reinforced epoxy asphalt chip seal laid between the old cement slab and the asphalt concrete overlay; the asphalt concrete overlay comprises a lower layer of medium-grained asphalt concrete, a modified emulsified asphalt binder layer and an upper layer of stone mastic asphalt, which are sequentially laid from the bottom to the top. The invention further discloses a reconstruction method of the composite structure for suppressing reflection cracks of an old cement concrete pavement, and the reconstruction method comprises local constraints of steel bar forming, planting of steel bars and completion of the multi-scale hybrid-fiber reinforced epoxy asphalt chip seal. According to the composite structure and the reconstruction method disclosed by the invention, the overall bearing capacity of the pavement which is reconstructed by the old cement slab can be improved, the interlayer bonding force between the old cement slab and the asphalt concrete overlay is effectively increased, the generation of the reflection cracks is suppressed and the condition that the reflection cracks are prevented from extending to the asphalt concrete overlay is avoided.
Description
Technical field
The invention belongs to Road and Traffic Engineering technical field is and in particular to a kind of old concrete road surface inhibitory reflex crack
Composite construction and remodeling method.
Background technology
Since the nineties in 20th century, a large amount of cement concrete pavements have been built by China.Developing rapidly with the development of the national economy,
Vehicular load on urban road and national highway arterial highway and density are increasing, and heavy duty and overloading are relatively common, cause
The damage of cement concrete pavement is on the rise.At present, most of cement concrete pavement has arrived overhaul period.Old concrete road surface adds
Black top concrete topping is the principal mode of old cement concrete road transformation, but this kind of composite road surface structure is easily because of old Cement Concrete
Form stress concentration in Asphalt Concrete Overlay above at road deck seam and produce reflection crack.
There are some researches show, the generation of reflection crack is inevitable and can not possibly be completely eliminated, and can only take measures to prolong
Delay or suppress its development.Temperature stress and traffic load and their coupling are that bituminous concrete overlays surface layer cracking
Major incentive.Traffic load mainly causes the shearing-type reflection crack of overlay, in the presence of wheel load, old cement concrete slab
The flexure difference of seam both sides is excessive and cause the failure by shear of asphalt overlay and progressively extend up, and forms load type reflection and splits
Seam.Temperature change mainly causes asphalt overlay opening mode reflection crack.Temperature change makes pavement structure produce two kinds of deformation,
One kind is due to temperature drop so that seam crossing asphalt overlay and old concrete pavement faceplate produce contraction and cause opening mode to reflect
Crack.Another kind is because day and night temperature leads to each structure sheaf to there is thermograde, and different materials have different thermal expansions
Coefficient, causes contraction and the warpage of old concrete road surface plate and asphalt overlay to cause the reflection crack of asphalt overlay.
The existing technical measures preventing reflection crack have focused largely on the design of asphalt overlaying Rotating fields, have：（1）Increase drip
Blue or green overlay thickness；（2）Add GSZ or geotextiles as waterproof layer；（3）Make using by the bonding interlocking of reinforcement material
With setting up netted reinforcing rib；（4）Set up stress absorbing layer, such as setting open gradation large grain size asphalt gravel stress absorbing layer；（5）
Cement concrete rubblization Paving Bituminous Concrete surface layer etc..Scheme（1）、（4）By increasing Asphalt Concrete Overlay thickness,
Maximal main extended stress and the maximum shear stress at Asphalt Concrete Overlay structure sheaf bottom can effectively be reduced, but can not effectively slow down
The expansion rate in crack prevents generation and the development of reflection crack.Meanwhile, the method increasing asphalt overlay thickness is difficult to meet
The restriction of urban road surfaces absolute altitude, also increases road surface total cost, and asphalt high temperature in the case of summer high temperature
Creep is also easy to produce rut, also just loses and makees the advantage of strong basis sake produced by basic unit due to old cement concrete slab.Scheme（2）、
（3）Application result shows, limited to the effect of load effective width, and is unfavorable for overlaying the shearing strength at intersection of composite construction, glues
Knot and waterproof etc..Scheme（5）Noise is big, is unfavorable for that urban road reparation is transformed.
Between cement concrete pavement plate, setting seam is to eliminate the temperature stress caused by temperature change, preventing temperature from becoming
Pavement damage produced by change.But from the perspective of cement concrete road panel bearing load, the presence of plate seam weakens
The globality of concrete slab, particularly when wheel load travels through plate seam, the relative vertical displacement of plate stitch both sides is got over
Greatly, the stress concentration of old cement surface plate is more obvious, and reflection crack disease is also more serious.
For old concrete road surface Laying Asphalt Surface Course composite construction, the generation of reflection crack is inevitable, only
Can take measures to delay or suppress its development, reduce the effect of its disease.Numerical Analysis result shows, in environmental factorss and
Under traffic load repeated action, Damage of the old cement concrete pavement board seam crossing both sides edges of boards opposed vertical shift differences（I.e. flexure is poor）It is excessive,
Do not only result in bitumen layer bottom surface stress excessive and ftracture, and cause old concrete road rapid with asphalt overlay interlaminar shear stress
Increase and cause tack coat failure damage.Once cracking initiation, crack extends to surrounding rapidly, and moisture penetrates into base by crack
Layer, damages to base material under traffic load repeated action, and then causes the diseases such as frost boiling, purt mud, depression.Therefore,
Strict control old cement concrete road seam crossing flexure difference and increase raw water mud plate are to stop with asphalt overlaying interface layer shear resistance
With the effective measures reducing reflection crack appearance.Meanwhile, strengthen the anti-water energy of tack coat between former cement board surface and asphalt overlaying surface layer
Power, it is to avoid moisture penetrates into basic unit by crack and causes crack to further expand.
China Patent No. CN201510077194.X discloses a kind of prevention old cement concrete road and overlays Colophonium reflection crack
Seam construction method, first enters between andante flexure difference and measures the old concrete panel needing seam to reinforce, qualified after, old at two pieces
The seam crossing of concrete slab cuts out equidistant strip groove across seam, reuses impact drill and is hung down in strip groove end
Straight boring；According to hole depth, groove length and plate seam width, bent-up bar, complete Horse hoof muscle molding；In strip groove and
After end vertical core is implanted into shape of a hoof reinforcing bar, into the boring after borehole cleaning, pour into epoxy resin anchoring adhesive；And mix cement is broken
Stone concrete placings, pour into formation bar planting protective layer in groove；Spread successively from bottom to top on the upper strata of two pieces of old concrete panels
Several layers of protection cover.The advantage of this invention is：By reducing the relative vertical displacement of old plate plate stitch both sides, pre- Anti-reflective Crack of Overlaying
Generation and development, and then reduce or stop old cement concrete road Laying Asphalt Surface Course reflection crack appearance.But, connect cement
It is isolated between the bar planting in crack between concrete plate, horizontal direction fails not form " network ", often takes root in muscle discontinuity,
Cannot guarantee that and often take root in the effect that muscle can play its opposing plate stitch both sides vertical displacement difference.This seam construction method transformation
Old cement concrete road toughness not strong, integral anti-shearing ability and overall tensile strength poor, the effect in inhibitory reflex crack is not
Good, water resistance is poor, and reflection crack easily causes water and damages disease after being formed.
Content of the invention
Present invention aims to the deficiencies in the prior art, now provide a kind of old concrete road surface inhibitory reflex crack
Composite construction and remodeling method, not strong to solve road surface toughness, integral anti-shearing ability and overall tensile strength poor, suppression
The effect on driving birds is not good of reflection crack processed, water resistance is poor, and reflection crack easily causes the problem that water damages disease after being formed.
For solving above-mentioned technical problem, the technical solution used in the present invention is：A kind of old concrete road surface inhibitory reflex splits
The composite construction of seam, including basic unit, old cement surface flaggy and the Asphalt Concrete Overlay being laid on cement surface flaggy；Described
Old cement surface flaggy includes some Geju City cement panel unit；Described old cement panel unit includes the old water of duplicate rows biserial setting
Mud panel；Its innovative point is：Also include being laid on multiple dimensioned mixed between old cement surface flaggy and Asphalt Concrete Overlay
Miscellaneous fibre enhancement epoxy bitumen macadam seal coat；Described Asphalt Concrete Overlay includes the middle grain formula drip laid successively from bottom to up
Blue or green concrete cutting optimal, modified emulsifying asphalt tack coat and asphalt-mastic-broken stone upper layer；The old cement panel of described horizontally set
Between be provided with transverse joint between plate, be provided with longitudinal seam between plate between described longitudinally disposed old cement panel；Described old
Between cement panel unit by plate between transverse joint and plate longitudinal seam be connected；It is carved with folding on described old cement surface flaggy
Linear groove；Described broken line connected in star is arranged at transverse joint between plate, and longitudinally through entirely old cement surface flaggy；Described folding
It is provided with the fold-line-shaped local restriction reinforcing bar matching with it in linear groove.
Further, described fold-line-shaped local restriction reinforcing bar is the spiral of diameter 25-35mm；Described fold-line-shaped local
Constraint steel-bar arrangement is the shape of trapezoidal wave, and including being separately positioned on the transverse joint left and right sides between plate, shape is consistent, and trapezoidal
Base along transverse joint direction between plate uninterruptedly connect successively trapezoidal；The left and right sides of described fold-line-shaped local restriction reinforcing bar is horizontal
It is 2*a+d to width0, wherein, described d0Transverse joint width between for cement plate, the scope of described a is 400-500mm；Described folding
The raised outermost width of linear local restriction reinforcing bar trapezoidal wave is 2*b+z0, wherein, described z0Longitudinal seam width between for plate
Degree, the scope of described b is 300-400mm；The width of the trapezoidal wave a cycle of described fold-line-shaped local restriction reinforcing bar is 3*c+
B, wherein, the scope of described c is 500-600 mm.
The technical scheme of the present invention also employing is：A kind of remodeling method in old concrete road surface inhibitory reflex crack, its wound
New point is：Comprise the following steps：
（1）Fold-line-shaped local restriction formed reinforcing steel bars：Select spiral, the width according to transverse joint between described plate and described plate
Between longitudinal seam width, the fold-line-shaped required for spiral is bent into, complete described fold-line-shaped local restriction reinforcing bar
Type；
（2）The flexure pretreatment of old cement panel：The old cement panel needing seam to reinforce is entered with flexure difference between andante measure, choose
Select the old cement panel of flexure difference measured value≤0.06mm；
（3）Bar planting pretreatment：Old cement panel to the flexure difference measured value≤0.06mm picking out, carries out bar planting pretreatment,
Vehicle Load additional stress concentrated area at transverse joint between the plate of old cement panel, i.e. transverse joint both sides between plate
At 400-500mm scope, cut out broken line connected in star, the length of described broken line connected in star, width and angle and fold-line-shaped across seam
Local restriction rebar sizes match, and the depth of broken line connected in star is 50-70mm, and broken line connected in star is set as bar planting portion
Position；Purged using hair-dryer doubling linear groove；
（4）Bar planting and bar planting protective layer make：Local restriction reinforcing bar is implanted in broken line connected in star；Using the rubble being stirred
Concrete fill pours in the remaining space and local restriction reinforcing bar between enter inside broken line connected in star；
（5）Spray bituminous epoxy：Using special bituminous epoxy resupply vehicle, bituminous epoxy is transported to job site and carries out bituminous epoxy
Spray, spray uniformly, the place not being sprayed onto manually is mended spills；
（6）The rubble containing multi-dimension mixing fiber for the preparation：From etc. particle diameter basaltic broken stone, resistance split with fine fibre and strengthen use
Crude fibre；Selected materials are carried out dry mixing, until resistance is split being mixed homogeneously with rubble with fine fibre and enhancing crude fibre；
（7）Dispense the rubble containing multi-dimension mixing fiber：Using truck spreader, on bituminous epoxy, uniformly dispense containing multiple dimensioned mixed
The rubble of miscellaneous fiber；Described step（5）, described step（6）With described step（7）Complete described multi-dimension mixing fiber reinforcement ring
The laying of oxygen bitumen macadam seal coat；
（8）Laying cutting optimal：From in grain formula bitumen concrete, multi-dimension mixing fibre enhancement epoxy Colophonium crushed stone sealing spray
In molding 24h-48h, grain formula bitumen concrete cutting optimal in laying；
（9）Laying tack coat：From modified emulsifying asphalt, modified emulsifying asphalt tack coat is laid on subsurface；
（10）Laying upper layer：From asphalt-mastic-broken stone, asphalt-mastic-broken stone upper layer is laid on tack coat.
Further, described step（2）After between middle plate, flexure difference measures, the old cement surface of flexure difference measured value ＞ 0.06
Plate, is carrying out step（3）Before, first carry out old cement panel grouting treatment；Cement bonded sand selected by the grouting material of described grouting treatment
Starch, the proportioning of cement mortar is：1.0:5.
Further, described step（5）The middle fountain height spraying bituminous epoxy is 0.7-0.8kg/, the temperature of bituminous epoxy
Spend for 120 DEG C.
Further, described step（6）In, described resistance split with fine fibre be set to vinal, polyacrylonitrile or
One or more of polyester fiber；The a diameter of 0.02-0.04mm with fine fibre is split in described resistance, and length is 6-12mm, carefully fine
Dimension volume fraction is 2%-3%；Described enhancing crude fibre is provided in round section polypropylene monofilament；Described strengthen with coarse-fibred directly
Footpath is 0.15-0.30mm, and length is 10-20mm, and density is 0.91g/cm3, crude fibre volume fraction is 1%-2%；Described dry mixing
Speed is 1200r/min, and the dry mixing time is 30s.
Further, described step（6）In, the specification of selected basaltic broken stone is 4.75-9.5mm, and consumption is
6kg/m2；Described step（7）In, dispense coverage rate ＞ 70% of the rubble containing multi-dimension mixing fiber.
Further, the thickness of described multi-dimension mixing fibre enhancement epoxy bitumen macadam seal coat is 0.8cm；Described middle grain
Formula bitumen concrete cutting optimal selects the middle grain formula bitumen concrete of AC-16C model, and thickness is 6cm；Described asphalt-mastic-broken stone upper layer
From the asphalt-mastic-broken stone of SMA-13 model, thickness is 4cm；Described modified emulsifying asphalt tack coat is used for grain formula in bonding
Bitumen concrete cutting optimal and asphalt-mastic-broken stone upper layer.
Further, described step（4）In, the strength grade of described crushed stone concrete filler is C20-C40.
Beneficial effects of the present invention are as follows：
1. the present invention makes full use of the residual intensity of old cement surface flaggy, reduces old cement by arranging local restriction distributing bar
Between the plate of panel, between the numerical value of flexure difference of transverse joint both sides and blocking-up plate, reflection crack overlays to the bituminous concrete on top
The passage of layer extension；Different-diameter fiber reinforcement with fine fibre, toughness reinforcing and cracking resistance effect are split by enhancing crude fibre and resistance,
Improve integral anti-shearing intensity and the water resistance of old cement surface flaggy and Asphalt Concrete Overlay interface layer, prevent and delay
The generation of reflection crack and development, and then reduce or stop the appearance of the reflection crack on Asphalt Concrete Overlay；The present invention
Road surface total bearing capacity using the transformation of old cement surface flaggy can be improved moreover it is possible to effectively improve old cement surface flaggy and Colophonium coagulation
Native overlay has good inter-layer bonding force it is suppressed that the generation of reflection crack and extension.
2. the present invention is entered by being provided with fold-line-shaped local restriction reinforcing bar at transverse joint between the plate between old cement panel
The interplate local restriction of row so that stresses re-distribution and compatible deformation between old cement panel under traffic load, temperature action,
Improve old cement surface flaggy and overlay the integral anti-shearing ability of concrete overlay composite construction and overall tensile strength, fully send out
Wave the residual intensity of old cement surface flaggy.Define " bolt-lock " effect between local restriction reinforcing bar and old cement surface flaggy, reduce
Between the plate of old cement panel between longitudinal seam and plate the crack because being formed under traffic load and temperature action for the transverse joint width
Degree, and blocked the passage of the asphalt overlay extension to top for the reflection crack between the plate of old cement panel.
3. the old cement surface flaggy in the present invention, laterally connects between the plate of old cement panel under traffic load, temperature action
Reflection crack influence area at seam embeds local restriction distributing bar, reduces the warm shrink horizontal stress, OK of old cement panel
The vertical stress of car load and buckling deformation, and take full advantage of the residual intensity of old cement surface flaggy, to block old cement surface
The transmission channel of reflection crack between the plate of plate.
4. the present invention is designed with multi-dimension mixing fiber reinforcement between old cement surface flaggy and Asphalt Concrete Overlay
Bituminous epoxy crushed stone sealing.Multi-dimension mixing fibre enhancement epoxy bitumen macadam seal coat not only possesses interface layer cementitiousness,
Also there is good water resistance simultaneously, be avoided that reflection crack causes water to damage disease after being formed.Increase in multi-dimension mixing fiber
Multi-dimension mixing fiber in strong bituminous epoxy crushed stone sealing, plays bridge joint, the action of crack arrest of different-diameter fiber, suppresses further
The interlaminar shear stress failure damage that reflection crack causes.
5. the multi-dimension mixing fibre enhancement epoxy bitumen macadam seal coat in the present invention, mixes appropriate enhancing and uses in rubble
Crude fibre and resistance are split and are used fine fibre, and the rubble containing multi-dimension mixing fiber for the composition forms 2 road cracking resistance defence lines, effectively improves many chis
The shearing strength at intersection of degree assorted fibre reinforced epoxy bitumen macadam seal coat and fracture property, and improve old cement surface flaggy and Colophonium
Waterproof ability between overlay, prevents generation and basic unit's water-induced distress of shearing-type reflection crack.
Brief description
Fig. 1 is the schematic diagram of local restriction steel bar plane position in the present invention.
Fig. 2 is construction arrangement schematic diagram at transverse joint between old cement panel plate in the present invention.
Specific embodiment
Hereinafter embodiments of the present invention are illustrated by particular specific embodiment, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
As depicted in figs. 1 and 2, the invention discloses a kind of composite construction in old concrete road surface inhibitory reflex crack, wrap
Include basic unit 6, the old cement surface flaggy 5 being laid in basic unit 6 and the Asphalt Concrete Overlay being laid on old cement surface flaggy；
Old cement surface flaggy 5 includes some Geju City cement panel unit；Old cement panel unit includes the old cement of duplicate rows biserial setting
Panel 11；Also include the multi-dimension mixing fiber reinforcement ring being laid between old cement surface flaggy 5 and Asphalt Concrete Overlay
Oxygen bitumen macadam seal coat 4；Middle grain formula bitumen concrete cutting optimal 3 that Asphalt Concrete Overlay includes laying successively from bottom to up, change
Property emulsified asphalt tack coat 2 and asphalt-mastic-broken stone upper layer 1；It is provided between plate between the old cement panel 11 of horizontally set
Transverse joint 7, is provided with longitudinal seam 10 between plate between longitudinally disposed old cement panel 11；Logical between old cement panel unit
Cross transverse joint 7 between plate to be connected with longitudinal seam between plate 10；It is carved with broken line connected in star 8 on old cement surface flaggy 5；Fold-line-shaped is recessed
Groove 8 is arranged at transverse joint 7 between plate, and longitudinally through entirely old cement surface flaggy 5；It is provided with and it in broken line connected in star 8
The fold-line-shaped local restriction reinforcing bar 9 matching.
Fold-line-shaped local restriction reinforcing bar 9 is the spiral of diameter 25-35mm；Fold-line-shaped local restriction reinforcing bar 9 is set to
The shape of trapezoidal wave, including being separately positioned on transverse joint 7 left and right sides between plate, shape is consistent, and horizontal between trapezoidal bottom edge plate
To seam 7 direction uninterruptedly connect successively trapezoidal；The left and right sides transverse width of fold-line-shaped local restriction reinforcing bar 9, i.e. left side
The distance at trapezoidal upper bottom to bottom on right lateral trapezoidal is 2*a+d0, wherein, described d0Transverse joint 7 width between for cement plate, the model of a
Enclose for 400-500mm；The raised outermost width of fold-line-shaped local restriction reinforcing bar 9 trapezoidal wave, that is, the width at trapezoidal upper bottom be
2*b+z0, wherein, z0Longitudinal seam 10 width between for plate, the scope of b is 300-400mm；The ladder of fold-line-shaped local restriction reinforcing bar 9
The width of shape ripple a cycle, that is, two trapezoidal going to the bottom and be 3*c+b, wherein, the scope of c is 500-600 mm.
Embodiment 1
A kind of remodeling method in old concrete road surface inhibitory reflex crack, comprises the following steps：
（1）Fold-line-shaped local restriction reinforcing bar 9 molding：Select spiral, the width according to transverse joint 7 between described plate and described
The width of longitudinal seam 10 between plate, the fold-line-shaped required for spiral is bent into, complete described fold-line-shaped local restriction steel
Muscle 9 molding；
（2）The flexure pretreatment of old cement panel 11：The old cement panel 11 needing seam to reinforce is entered with flexure difference between andante survey
Fixed, pick out the old cement panel 11 of flexure difference measured value≤0.06mm；
（3）Bar planting pretreatment：Old cement panel 11 to the flexure difference measured value≤0.06mm picking out, carries out bar planting and locates in advance
Reason, in the Vehicle Load additional stress concentrated area of old cement panel 11 seam crossing, i.e. transverse joint 7 both sides 400- between plate
At 500mm scope, cut out broken line connected in star 8, the length of described broken line connected in star 8, width and angle and fold-line-shaped office across seam
Portion's constraint reinforcing bar 9 size matches, and the depth of broken line connected in star 8 is 50-70mm, and broken line connected in star 8 is set as bar planting portion
Position；Purged using hair-dryer doubling linear groove；
（4）Bar planting and bar planting protective layer make：Local restriction reinforcing bar 9 is implanted in broken line connected in star 8；Broken using be stirred
Stone concrete filler pours enter in remaining space between broken line connected in star 8 inner side and local restriction reinforcing bar 9；Crushed stone concrete filler
Strength grade be C20-C40.
The present invention is by being provided with fold-line-shaped local restriction reinforcing bar 9 at transverse joint 7 between the plate between old cement panel 11
Carry out interplate local restriction so that under traffic load, temperature action between old cement panel 11 plate stresses re-distribution and
Compatible deformation, improves integral anti-shearing ability and the entirety of old cement surface flaggy 5 Paving Bituminous Concrete overlay composite construction
Tensile strength, gives full play to the residual intensity of old cement surface flaggy 5.Formed between local restriction reinforcing bar 9 and old cement surface flaggy 5
" bolt-lock " effect, reduces the width in crack 7 at transverse joint between longitudinal seam 10 and plate between the plate of old cement panel 5, and
Block the passage that between the plate of old cement panel 11, reflection crack extends to top asphalt overlay.Old cement surface flaggy 5, is expert at
Reflection crack influence area at transverse joint 7 between the plate of old cement panel under car load, temperature action embeds local restriction steel
Muscle 9, reduces warm shrink horizontal stress, the vertical stress of traffic load and the buckling deformation of old cement panel 11, and makes full use of
The residual intensity of old cement surface flaggy 5, to block the transmission channel of reflection crack between the plate of old cement panel 11.
（5）Spray bituminous epoxy：Using special bituminous epoxy resupply vehicle, bituminous epoxy is transported to job site and carries out epoxy
Asphalt distribution, sprays uniformly, the place not being sprayed onto manually is mended spills；The fountain height spraying bituminous epoxy is 0.7-0.8kg/
, the temperature of bituminous epoxy is 120 DEG C.
（6）The rubble containing multi-dimension mixing fiber for the preparation：From etc. particle diameter basaltic broken stone, resistance split with fine fibre and increasing
Use by force crude fibre；Selected materials are carried out dry mixing, until resistance is split being mixed homogeneously with rubble with fine fibre and enhancing crude fibre；
The specification of selected basaltic broken stone is 4.75-9.5mm, and consumption is 6kg/m2.Resistance split with fine fibre be vinal,
One or more of polyacrylonitrile or polyester fiber；The a diameter of 0.02-0.04mm with fine fibre is split in resistance, and length is 6-
12mm, fine fibre volume fraction is 2%-3%；Enhancing crude fibre is circular cross-section polypropylene monofilament；Described strengthen with coarse-fibred
A diameter of 0.15-0.30mm, length is 10-20mm, and density is 0.91g/cm3, crude fibre volume fraction is 1%-2%；The speed of dry mixing
Rate is 1200r/min, and the dry mixing time is 30s.
（7）Dispense the rubble containing multi-dimension mixing fiber：Using truck spreader, on bituminous epoxy, uniformly dispense and contain many chis
The rubble of degree assorted fibre；Coverage rate ＞ 70% of the rubble containing multi-dimension mixing fiber；Step（5）, step（6）And step（7）
Complete the laying of multi-dimension mixing fibre enhancement epoxy bitumen macadam seal coat 4.
（8）Laying cutting optimal：From in grain formula bitumen concrete, in the crushed stone sealing of multi-dimension mixing fibre enhancement epoxy Colophonium
Spray in molding 24h-48h, grain formula bitumen concrete cutting optimal 3 in laying；
（9）Laying tack coat：From modified emulsifying asphalt, modified emulsifying asphalt tack coat 2 is laid on subsurface；
（10）Laying upper layer：From asphalt-mastic-broken stone, asphalt-mastic-broken stone upper layer 1 is laid on tack coat.Many
The thickness of yardstick assorted fibre reinforced epoxy bitumen macadam seal coat 4 is 0.8cm；Described middle grain formula bitumen concrete cutting optimal 3 selects AC-
The middle grain formula bitumen concrete of 16C model, thickness is 6cm；Described asphalt-mastic-broken stone upper layer 1 selects the Colophonium of SMA-13 model
Mastic-broken stone, thickness is 4cm；Described modified emulsifying asphalt tack coat 2 is used for grain formula bitumen concrete cutting optimal 3 and Colophonium in bonding
Mastic-broken stone upper layer 1.
The present invention is designed with multi-dimension mixing fiber reinforcement ring between old cement surface flaggy 5 and Asphalt Concrete Overlay
Oxygen bitumen macadam seal coat 4.Multi-dimension mixing fibre enhancement epoxy bitumen macadam seal coat 4 not only possesses interface layer cementitiousness,
Also there is good water resistance simultaneously, be avoided that reflection crack causes water to damage disease after being formed.Increase in multi-dimension mixing fiber
Multi-dimension mixing fiber in strong bituminous epoxy crushed stone sealing 4, plays bridge joint, the action of crack arrest of different-diameter fiber, presses down further
The interlaminar shear stress failure damage that reflection crack processed causes.Multi-dimension mixing fibre enhancement epoxy asphalt macadam envelope in the present invention
Layer 4, mixes appropriate enhancing crude fibre and resistance is split and used fine fibre in rubble, the rubble containing multi-dimension mixing fiber for the composition is formed
2 roads cracking resistance defence line, effectively improve shearing strength at intersection and the fracture property of multi-dimension mixing fibre enhancement epoxy bitumen macadam seal coat,
And improve waterproof ability between old cement surface flaggy 5 and asphalt overlay, prevent generation and the base of shearing-type reflection crack
Layer water-induced distress.
Embodiment 2
Embodiment 2 is with respect to embodiment 1 difference：Step（2）After between middle plate, flexure difference measures, flexure difference measured value ＞
0.06 old cement panel 11, is carrying out step（3）Before, first carry out old cement panel 11 grouting treatment；Described grouting treatment
Cement mortar selected by grouting material, and the proportioning of cement mortar is：1.0:5, comprcssive strength >=15Mpa, then with the total matter of cement mortar
On the basis of amount, add aluminium powder 0.001wt%, early strength agent 0.01wt%.By grouting treatment and interpolation aluminium powder early strength agent etc., by between plate
Flexure difference is reduced to below 0.06mm, reduces the additional stress that plat-bottom escape brings, and prevents that between plate, flexure difference is too big, causes to transform
The phenomenon of reflection crack in road surface afterwards.
The present invention pass through arrange local restriction distributing bar 9 make full use of old cement surface flaggy residual intensity, reduce old
Between the plate of cement panel 11 transverse joint 7 both sides flexure difference and block plate between reflection crack to top Asphalt Concrete Overlay
The passage of extension；Different-diameter fiber reinforcement with fine fibre, toughness reinforcing and cracking resistance effect are split by enhancing crude fibre and resistance, carries
The shearing strength of high old cement surface flaggy 5 and Asphalt Concrete Overlay interface layer and water resistance, prevention and delayed reflex
The generation in crack and development, and then reduce or stop the appearance of Reflection Crack of Bituminous Concrete Pavement；The present invention can improve profit
Overlayed with bituminous concrete moreover it is possible to effectively improve old cement surface flaggy 5 with the road surface total bearing capacity of old cement surface flaggy 5 transformation
Layer has good inter-layer bonding force it is suppressed that the generation of reflection crack and extension.
Operation principle：
The mechanism of action of local restriction reinforcing bar 9：The rigidity of local restriction reinforcing bar 9 is more than the rigidity of cement concrete, in old cement
At transverse joint 7 between the plate of panel 11, the small vertical displacement of generation is poor, and that is, between plate, flexure is poor, and when between plate, flexure difference measured value surpasses
Cross a threshold value（>0.04mm）, between plate, local restriction reinforcing bar 9 has biography at longitudinal seam 10 between transverse joint 7 and plate between plate
Pass moment of flexure and the effect of shearing, improve the harmoniously working capability between plate, contribute to reducing deformation and the additional stress of edges of boards.Locally
Constraint reinforcing bar 9, longitudinally forward and backward adjacent panels is bound up so that between plate between local restriction reinforcing bar 9 and old cement panel 11
Carry out stresses re-distribution and compatible deformation, improve old cement surface flaggy 5 and overlay the integral anti-shearing ability of asphalt overlay structure and whole
Body tensile strength.Between plate, local restriction reinforcing bar 9 can form " bolt together with old cement panel 11 in the horizontal plane tight bond
Lock " effect, can control the width in crack at transverse joint 7 between the plate of old cement panel 11, and between effective suppressing plate, crack is upwards
The Asphalt Concrete Overlay extension in portion, prevents Asphalt Concrete Overlay surface from forming reflection crack.
Local restriction reinforcing bar 9 is by continuous fold-line-shaped reinforcing bar so that connecting the plate transverse joint 7 between old cement panel 11
Crack form " network " from the bar planting of isolation effect, often taking root in muscle can be effectively ensured and often taken root in muscle and can send out with uniform stressed
Wave the effect that transverse joint 7 both sides vertical displacement difference between its opposing plate is flexure difference between plate.
Between for plate, flexure difference, more than 0.06mm, will carry out old plate grouting treatment, adjust and be less than to flexure difference between plate
0.06mm, reduces the additional stress that plat-bottom escape brings.
Reflection crack disease research and Finite element analysis results show, under Driving Loading reflection crack occur in close
The marginal area of old cement panel（It is about the 1/10 of old cement panel 11 minor face width）, local restriction reinforcing bar 9 is arranged on this area
The road surface composite construction antireflection that domain can preferably strengthen old cement surface flaggy 5 Paving Bituminous Concrete overlay and be formed is split
Seam performance.
The mechanism of action of multi-dimension mixing fibre enhancement epoxy bituminous macadam 4：Bituminous epoxy have good bonding and
Water resistance etc., can suppress shearing-type reflection crack and Water Damage that traffic load causes etc..Rubble mix appropriate
Different-diameter mix resistance split with fine fibre and enhancing crude fibre contribute to improve and lifted multi-dimension mixing fibre enhancement epoxy
The shearing strength at intersection of bituminous macadam 4 and fracture property.Resistance is split higher with fine fibre elastic modelling quantity, and length is shorter, makees in tension
Less with lower self-deformation, stronger to the retardation loading initial stage minute crack；After load peak value, part fine fibre is from matrix
In be pulled out, continue to increase with deformation, most of fine fibre is pulled out, and the toughness reinforcing contribution to the large deformation stage is less, acts as
It is the enhancing crude fibre of low modulus, crude fibre is longer, surface irregularity, increased it and cohere effect with matrix；
Increase with test piece deformation, crude fibre occurs sliding with matrix, is eventually exhibited as thick polyolefine fiber and is pulled out, breaks. due to
Crude fibre is longer, extract with stretch breaking process in consume compared with multi-energy, to improving multi-dimension mixing fibre enhancement epoxy Colophonium
The toughness in large deformation for the crushed stone sealing 4 has larger contribution.Good cooperative effect between different-diameter fiber, has complementary advantages,
Different levels play enhancing, toughness reinforcing and action of crack arrest. and its activeness and quietness mechanism can be described with " 2 road defence lines are split in resistance ".
Further, since resistance split superfine with fine fibre, after mixing with enhancing crude fibre polypropylene fibre, in whipping process
In with crude fibre formed " fiber is chain " mechanism, make the fiber between reflection crack be more difficult to extract, further function as activeness and quietness
Effect.
Above-described embodiment is presently preferred embodiments of the present invention, is not the restriction to technical solution of the present invention, as long as
The technical scheme that can realize on the basis of above-described embodiment without creative work, is regarded as falling into patent of the present invention
Rights protection scope in.
Claims (9)
1. a kind of composite construction in old concrete road surface inhibitory reflex crack, including basic unit, old cement surface flaggy be laid on water
Asphalt Concrete Overlay on mud panel layer；Described old cement surface flaggy includes some Geju City cement panel unit；Described old
Cement panel unit includes the old cement panel of duplicate rows biserial setting；It is characterized in that：Also include being laid on old cement surface flaggy
Multi-dimension mixing fibre enhancement epoxy bitumen macadam seal coat and Asphalt Concrete Overlay between；Described bituminous concrete overlays
Layer includes middle grain formula bitumen concrete cutting optimal, modified emulsifying asphalt tack coat and the asphalt-mastic-broken stone laid successively from bottom to up
Upper layer；It is provided with transverse joint between plate, described longitudinally disposed old cement surface between the old cement panel of described horizontally set
It is provided with longitudinal seam between plate between plate；Pass through longitudinal seam between transverse joint and plate between plate between described old cement panel unit
It is connected；It is carved with broken line connected in star on described old cement surface flaggy；Described broken line connected in star is arranged at transverse joint between plate, and
Longitudinally through entirely old cement surface flaggy；It is provided with the fold-line-shaped local restriction steel matching with it in described broken line connected in star
Muscle.
2. as claimed in claim 1 a kind of composite construction in old concrete road surface inhibitory reflex crack it is characterised in that：Described
Fold-line-shaped local restriction reinforcing bar is the spiral of diameter 25-35mm；Described fold-line-shaped local restriction steel-bar arrangement is trapezoidal wave
Shape, including being separately positioned on the transverse joint left and right sides between plate, shape is consistent, and transverse joint side between trapezoidal bottom edge plate
Trapezoidal to uninterrupted connection successively；The left and right sides transverse width of described fold-line-shaped local restriction reinforcing bar is 2*a+d0, wherein,
Described d0Transverse joint width between for cement plate, the scope of described a is 400-500mm；Described fold-line-shaped local restriction steel bar ladder
The raised outermost width of shape ripple is 2*b+z0, wherein, described z0Longitudinal seam width between for plate, the scope of described b is 300-
400mm；The width of the trapezoidal wave a cycle of described fold-line-shaped local restriction reinforcing bar is 3*c+b, and wherein, the scope of described c is
500-600 mm.
3. a kind of remodeling method of the composite construction in old concrete road surface inhibitory reflex crack as claimed in claim 1 or 2, its
It is characterised by：Comprise the following steps：
（1）Fold-line-shaped local restriction formed reinforcing steel bars：Select spiral, the width according to transverse joint between described plate and described plate
Between longitudinal seam width, the fold-line-shaped required for spiral is bent into, complete described fold-line-shaped local restriction reinforcing bar
Type；
（2）The flexure pretreatment of old cement panel：The old cement panel needing seam to reinforce is entered with flexure difference between andante measure, choose
Select the old cement panel of flexure difference measured value≤0.06mm；
（3）Bar planting pretreatment：Old cement panel to the flexure difference measured value≤0.06mm picking out, carries out bar planting pretreatment,
Vehicle Load additional stress concentrated area at transverse joint between the plate of old cement panel, i.e. transverse joint both sides between plate
At 400-500mm scope, cut out trapezoidal groove, the length of described broken line connected in star, width and angle and fold-line-shaped office across seam
Portion's constraint rebar sizes match, and the depth of broken line connected in star is 50-70mm, and broken line connected in star is set as bar planting position；
Purged using hair-dryer doubling linear groove；
（4）Bar planting and bar planting protective layer make：Local restriction reinforcing bar is implanted in broken line connected in star；Using the rubble being stirred
Concrete fill pours in the remaining space and local restriction reinforcing bar between enter inside broken line connected in star；
（5）Spray bituminous epoxy：Using special bituminous epoxy resupply vehicle, bituminous epoxy is transported to job site and carries out bituminous epoxy
Spray, spray uniformly, the place not being sprayed onto manually is mended spills；
（6）The rubble containing multi-dimension mixing fiber for the preparation：From etc. particle diameter basaltic broken stone, resistance split with fine fibre and strengthen use
Crude fibre；Selected materials are carried out dry mixing, until resistance is split being mixed homogeneously with rubble with fine fibre and enhancing crude fibre；
（7）Dispense the rubble containing multi-dimension mixing fiber：Using truck spreader, on bituminous epoxy, uniformly dispense containing multiple dimensioned mixed
The rubble of miscellaneous fiber；Described step（5）, described step（6）With described step（7）Complete described multi-dimension mixing fiber reinforcement ring
The laying of oxygen bitumen macadam seal coat；
（8）Laying cutting optimal：From in grain formula bitumen concrete, multi-dimension mixing fibre enhancement epoxy Colophonium crushed stone sealing spray
In molding 24h-48h, grain formula bitumen concrete cutting optimal in laying；
（9）Laying tack coat：From modified emulsifying asphalt, modified emulsifying asphalt tack coat is laid on subsurface；
（10）Laying upper layer：From asphalt-mastic-broken stone, asphalt-mastic-broken stone upper layer is laid on tack coat.
4. as claimed in claim 3 a kind of remodeling method of old concrete road surface Reflection Cracking it is characterised in that：Described step
Suddenly（2）After between middle plate, flexure difference measures, the old cement panel of flexure difference measured value ＞ 0.06, carrying out step（3）Before, first carry out
Old cement panel grouting treatment；Cement mortar selected by the grouting material of described grouting treatment, and the proportioning of cement mortar is：1.0:5.
5. as claimed in claim 3 a kind of remodeling method of old concrete road surface Reflection Cracking it is characterised in that：Described step
Suddenly（5）The middle fountain height spraying bituminous epoxy is 0.7-0.8kg/, and the temperature of bituminous epoxy is 120 DEG C.
6. as claimed in claim 3 a kind of remodeling method of old concrete road surface Reflection Cracking it is characterised in that：Described step
Suddenly（6）In, described resistance is split and is set to one or more of vinal, polyacrylonitrile or polyester fiber with fine fibre；
The a diameter of 0.02-0.04mm with fine fibre is split in described resistance, and length is 6-12mm, and fine fibre volume fraction is 2%-3%；Described enhancing
It is provided in round section polypropylene monofilament with crude fibre；Described strengthen with coarse-fibred a diameter of 0.15-0.30mm, length is
10-20mm, density is 0.91g/cm3, crude fibre volume fraction is 1%-2%；The speed of described dry mixing is 1200r/min, during dry mixing
Between be 30s.
7. as claimed in claim 3 a kind of remodeling method of old concrete road surface Reflection Cracking it is characterised in that：Described step
Suddenly（6）In, the specification of selected basaltic broken stone is 4.75-9.5mm, and consumption is 6kg/m2；Described step（7）In, dispense
Coverage rate ＞ 70% of the rubble containing multi-dimension mixing fiber.
8. as claimed in claim 3 a kind of remodeling method of old concrete road surface Reflection Cracking it is characterised in that：Described many
The thickness of yardstick assorted fibre reinforced epoxy bitumen macadam seal coat is 0.8cm；Described middle grain formula bitumen concrete cutting optimal selects AC-
The middle grain formula bitumen concrete of 16C model, thickness is 6cm；Described asphalt-mastic-broken stone upper layer selects the Colophonium of SMA-13 model
Mastic-broken stone, thickness is 4cm；Described modified emulsifying asphalt tack coat is used for grain formula bitumen concrete cutting optimal and Colophonium agate in bonding
Hoof fat crushed stones upper layer.
9. as claimed in claim 3 a kind of remodeling method of old concrete road surface Reflection Cracking it is characterised in that：Described step
Suddenly（4）In, the strength grade of described crushed stone concrete filler is C20-C40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851203.0A CN106436525B (en) | 2016-09-27 | 2016-09-27 | A kind of old concrete road surface inhibits the composite construction and remodeling method of reflection crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851203.0A CN106436525B (en) | 2016-09-27 | 2016-09-27 | A kind of old concrete road surface inhibits the composite construction and remodeling method of reflection crack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106436525A true CN106436525A (en) | 2017-02-22 |
| CN106436525B CN106436525B (en) | 2018-10-16 |
Family
ID=58169682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610851203.0A Active CN106436525B (en) | 2016-09-27 | 2016-09-27 | A kind of old concrete road surface inhibits the composite construction and remodeling method of reflection crack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106436525B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024135A (en) * | 2018-08-15 | 2018-12-18 | 江西博慧工程技术服务有限公司 | A kind of concrete road surface green upgradeable architecture and remodeling method |
| CN113026473A (en) * | 2021-03-24 | 2021-06-25 | 上海瀛盛市政工程有限公司 | Road widening construction method |
| CN113481787A (en) * | 2021-08-04 | 2021-10-08 | 长春市市政工程设计研究院 | Asphalt pavement assembled base course and method for preventing asphalt pavement assembled base course reflection cracks |
| 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 |
| CN115491945A (en) * | 2022-05-30 | 2022-12-20 | 安徽省交通规划设计研究总院股份有限公司 | Treatment method for reflection cracks of white-to-black road surface |
| CN109900233B (en) * | 2019-02-20 | 2024-04-02 | 同济大学 | Single-point monitoring device for water film thickness on surface of cement concrete pavement and mounting method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435537A (en) * | 2002-10-18 | 2003-08-13 | 居永立 | Concrete pavement diagonal joint seam construction method |
| CN2592702Y (en) * | 2002-12-19 | 2003-12-17 | 薛军伟 | Nonplanar section for traffic road surface |
| KR101017948B1 (en) * | 2010-07-30 | 2011-03-02 | 고삼석 | A joint leakage control device and form of construction work of underpass |
| US20140242863A1 (en) * | 2011-10-19 | 2014-08-28 | Hans Voet | Article of manufacture made of composite material, for incorporation into a civil engineering structure |
| CN203947383U (en) * | 2014-07-21 | 2014-11-19 | 中铁三局集团有限公司 | Cement concrete pavement space joint |
| CN104674627A (en) * | 2015-02-13 | 2015-06-03 | 南通大学 | Joint construction method for preventing reflection cracks generated during spreading of asphalt on old concrete pavement |
| CN204875431U (en) * | 2015-08-06 | 2015-12-16 | 杨田花 | Road surface interface structure |
-
2016
- 2016-09-27 CN CN201610851203.0A patent/CN106436525B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435537A (en) * | 2002-10-18 | 2003-08-13 | 居永立 | Concrete pavement diagonal joint seam construction method |
| CN2592702Y (en) * | 2002-12-19 | 2003-12-17 | 薛军伟 | Nonplanar section for traffic road surface |
| KR101017948B1 (en) * | 2010-07-30 | 2011-03-02 | 고삼석 | A joint leakage control device and form of construction work of underpass |
| US20140242863A1 (en) * | 2011-10-19 | 2014-08-28 | Hans Voet | Article of manufacture made of composite material, for incorporation into a civil engineering structure |
| CN203947383U (en) * | 2014-07-21 | 2014-11-19 | 中铁三局集团有限公司 | Cement concrete pavement space joint |
| CN104674627A (en) * | 2015-02-13 | 2015-06-03 | 南通大学 | Joint construction method for preventing reflection cracks generated during spreading of asphalt on old concrete pavement |
| CN204875431U (en) * | 2015-08-06 | 2015-12-16 | 杨田花 | Road surface interface structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024135A (en) * | 2018-08-15 | 2018-12-18 | 江西博慧工程技术服务有限公司 | A kind of concrete road surface green upgradeable architecture and remodeling method |
| CN109024135B (en) * | 2018-08-15 | 2020-07-24 | 江西博慧工程技术服务有限公司 | Green upgrading structure and modification method for concrete pavement |
| CN109900233B (en) * | 2019-02-20 | 2024-04-02 | 同济大学 | Single-point monitoring device for water film thickness on surface of cement concrete pavement and mounting method |
| CN113026473A (en) * | 2021-03-24 | 2021-06-25 | 上海瀛盛市政工程有限公司 | Road widening construction method |
| CN113481787A (en) * | 2021-08-04 | 2021-10-08 | 长春市市政工程设计研究院 | Asphalt pavement assembled base course and method for preventing asphalt pavement assembled base course reflection cracks |
| CN115491945A (en) * | 2022-05-30 | 2022-12-20 | 安徽省交通规划设计研究总院股份有限公司 | Treatment method for reflection cracks of white-to-black road surface |
| CN115491945B (en) * | 2022-05-30 | 2023-11-24 | 安徽省交通规划设计研究总院股份有限公司 | Treatment method for reflection crack of white-to-black pavement |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106436525B (en) | 2018-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106436525B (en) | A kind of old concrete road surface inhibits the composite construction and remodeling method of reflection crack | |
| CN104674627B (en) | A kind of seam construction method preventing old cement concrete road to add black top reflection crack | |
| CN102505606B (en) | Processing method for cracks when asphalt layer is additionally paved on cement road surface | |
| CN204139019U (en) | The strong cracking resistance coiled material of road surface structure floor height | |
| CN204000527U (en) | A kind of old cement concrete pavement regeneration overlays road structure | |
| KR100710892B1 (en) | A concrete panel for pavement and pavement construction method using it | |
| CN202787044U (en) | Longitudinal crack treatment structure for bituminous concrete pavement | |
| CN102051848B (en) | HMA/CC (Hot-Mix Asphalt)/(Cement Concrete) composite type pavement structure and constructing method thereof | |
| CN204825551U (en) | Waterproof crack control bituminous paving structure | |
| CN201502016U (en) | Asphalt pavement fiber reinforced lamina top facing | |
| CN104562888B (en) | A kind of deck paving method | |
| CN103334365B (en) | The paving structure of a kind of fast quick-recovery road surface and bridge floor function and paving method | |
| CN209538017U (en) | Paving structure at highway bridge deck expansion joint | |
| Makowski et al. | Wisconsin experiences with reflective crack relief projects | |
| CN204753292U (en) | Spread structure with adding of black top layer on cement road surface | |
| CN207672357U (en) | A kind of transition slab at bridge head and asphalt concrete pavement changeover portion composite pavement structure | |
| CN206800193U (en) | A kind of durable cement concrete bridge floor composite pavement structure | |
| CN102561143A (en) | Pavement structure of concrete highway in alpine region | |
| CN207210878U (en) | A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid | |
| CN217781680U (en) | Repairing structure for micro-surface of ultra-wide and ultra-deep track | |
| CN206736647U (en) | A kind of novel road structure | |
| CN110106785A (en) | A kind of steel-PVA tenacity of fibre concrete combined bridge deck structure and construction method | |
| CN205711601U (en) | A kind of super viscous wearing course paving structure of cement pavement enhancement mode | |
| CN208167443U (en) | A kind of Prefabricated Concrete curb structure | |
| CN211256538U (en) | Ultrathin high-performance composite semi-flexible surface layer pavement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220719 Address after: 226001 No. 9, Xiaoxi Road, Nantong City, Jiangsu Province Patentee after: NANTONG ROAD AND BRIDGE ENGINEERING Co.,Ltd. Address before: 226000 No. 9 Siyuan Road, Chongchuan District, Nantong City, Jiangsu Province Patentee before: NANTONG University |