CN207210878U - A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid - Google Patents
A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid Download PDFInfo
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- CN207210878U CN207210878U CN201721040268.3U CN201721040268U CN207210878U CN 207210878 U CN207210878 U CN 207210878U CN 201721040268 U CN201721040268 U CN 201721040268U CN 207210878 U CN207210878 U CN 207210878U
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Abstract
The utility model discloses a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid, it is made up of lower separation layer, lower adhesion coating, cracking resistance geotextiles, crushed stone sealing, upper separation layer, it is characterised in that：Lower separation layer is only connected with lower adhesion coating, lower adhesion coating is connected with lower separation layer, cracking resistance geotextiles respectively, crushed stone sealing is connected with cracking resistance geotextiles, upper separation layer respectively, and upper separation layer is only connected with crushed stone sealing, and described crushed stone sealing is made up of upper adhesion coating, the mutual build-in of rubble.Realize the rapid construction in scene.Solve on-site layering construction and dispensed the uppity technical problems of site operation such as uniformity, the easy fold of flexible geotextiles, Yi Songla by environmental constraints, binding material；Reduction on-site construction processes, time are reached, have realized that pave smooth-going corrugationless, binding material of geotextiles dispenses the technique effect that uniformity is good, preventing and treating reflection crack and water-protected enclosure function greatly strengthen.
Description
Technical field
The utility model belongs to the pavement technique field of highway traffic infrastructure, is more particularly to a kind of for preventing and treating half
The coiled material of rigid base's asphalt pavement reflective cracking, rapid, standardization stand especially suitable for preventing and treating reflection crack overlay
Spread construction molding.
Technical background
Take basic unit, bituminous concrete as " Pavement on Semi-rigid Type Base " quilt of surface layer of stabilized with inorganic binder pellet (soil) class
Extensively using in domestic highway construction.Because semi-rigid type base belongs to hydraulic material, the development of its strength and stiffness needs
One section of considerable time is undergone, therefore the change to temperature and humidity is all more sensitive, and easily produce drying shrinkage and temperature and contract
Crack.Once semi-rigid type base ftractures, stress concentration is also easy to produce at crack, in traffic load and the collective effect of temperature stress
Under, crack will extend in asphalt surface course, finally through whole surface layer, form reflection crack.The generation of reflection crack, not only shadow
The attractive in appearance and road-ability on road surface is rung, also easily forms rain infiltration passage, greatly shortens the service life on road surface.
《Asphalt pavement design criterion》Pointed out in (JTG D50), the good inorganic binder of cracking resistance can be selected in engineering
Stabilizing material, increase asphalt thickness, stress absorbing layer or the functional layer of laying geosynthetics is set to play
Reduction or the effect in delayed reflex crack.In Practical Project, for economics, more using crushed stone sealing or geotextiles are overlayed
The technical measures such as interlayer.
Crushed stone sealing needs construction molding at the scene, it is higher to construction process requirement, OK as a kind of site operation measure
Vehicle speed should be uniform, and should ensure that the application rate matching of both building stones and binding material, otherwise easily its quality by construct influenceed compared with
Greatly.(Synchronous pavement surface dressing feature and the analysis of prices, Heilungkiang transport science and techonologies, the 7th phase in 2011, Liu Xiaogang)
Geotextiles are a kind of flexible materials, and it, which is prevented and treated, needs to increase tack coat in the construction of reflection crack, extends work progress,
Different construction links need to cooperate, it is more to intersect, and need to ensure that sticking temperature, environmental requirement are high in construction, live binding material
Spread is uneven, the easy fold of flexible geotextiles, geotextiles do not tense etc., and to frequently result in quality control on construction not in place, brings quality
Hidden danger, cause geotextiles to be used to prevent and treat the application of reflection crack and be negatively affected (such as top course passage, bellding).
The content of the invention：
The purpose of this utility model is the provision of a kind of for preventing and treating Reflective Crack over Asphalt Pavement with Semi-rigid
Coiled material, the coiled material can be prefabricated in the factory into rollable structure, and the stickup that directly paves during site operation is close, can avoid existing
The problem of field construction quality is whard to control, while the rapid construction in scene can be realized.
In order to realize above-mentioned purpose, the utility model uses following technique measures：
A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid, its technical concept are：1st, this coiled material bag
Include lower separation layer, lower adhesion coating, cracking resistance geotextiles, crushed stone sealing, upper separation layer.Wherein descend the effect of separation layer and upper separation layer only
Merely to playing insulation blocking effect, be advantageous to the curling packaging of coiled material.Since if being not provided with upper and lower separation layer, coiled material
It is easily mutually sticky (containing pitch in lower adhesion coating and crushed stone sealing, there is certain tack) after curling.2nd, the core of coiled material
Part is lower adhesion coating, cracking resistance geotextiles, crushed stone sealing.The imagination of applicant is：During site operation, by the upper and lower of finished product coiled material
Separation layer is directly torn, and the core of coiled material is affixed directly on road, and coiled material is the compound (under i.e. of existing trilaminate material
Adhesion coating, cracking resistance geotextiles, crushed stone sealing).If using coiled material of the present utility model, scene need to only construct once, just complete
Tri-level construction, because first having carried out indoors prefabricated.3rd, crushed stone sealing it be by upper adhesion coating, the mutual build-in of rubble, mutually
Blending forms.Be not present between them absolute whose it is upper, who under, or who it is left, who is on the right side.Rubble is to be immersed in adhesion coating
In (being actually a kind of coal tar, cooled and solidified is hardened afterwards).So it is defined as mutual build-in.
A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid, it is by lower separation layer, lower adhesion coating, cracking resistance
Geotextiles, crushed stone sealing, upper separation layer composition, it is characterised in that：Lower separation layer is only connected with lower adhesion coating, and lower adhesion coating is respectively with
Separation layer, cracking resistance geotextiles are connected, and crushed stone sealing is connected with cracking resistance geotextiles, upper separation layer respectively, upper separation layer only with rubble
Sealing is connected, and described crushed stone sealing is made up of upper adhesion coating, the mutual build-in of rubble.
According to coiled material described in the utility model, it is characterised in that described lower separation layer is polyester film (PET), poly- second
Any of materials such as alkene film (PE), aluminium foil or day silicon barrier film, are isolated and are protected to lower adhesion coating, be advantageous to coiled material
Packed and transported.
According to coiled material described in the utility model, it is characterised in that described lower adhesion coating is bonded in lower isolation by compacting
Layer above, be self-adhering-type bituminous binder, hot paving type bituminous binder it is any, the spread quantity of the binding material is according to shearing
Experiment obtains, and the base bitumen that it is used is identical with bituminous mixtures for pavement surface.
According to coiled material described in the utility model, it is characterised in that described cracking resistance geotextiles are bonded in down by compacting
Above adhesion coating, it is polypropylene nonwoven geotextiles, its ultimate tensile strength >=10.5kN/m, CBR bursting strengths >=2.0kN, inhales
Oil cut rate >=1.2kg/m2, advantageously form entirety and bear inter-laminar stress, and there is waterproof action.
According to coiled material described in the utility model, it is characterised in that described crushed stone sealing compacting is bonded in cracking resistance geotechnique
Above cloth, it is made up of upper adhesion coating, the mutual build-in of rubble, thickness is no more than 0.6cm, and the waterproof anticracking that can further enhance structure is made
With.
According to coiled material described in the utility model, it is characterised in that described upper adhesion coating is conventional sealing bituminous binder,
For any of common heated bitumen, emulsified asphalt, modified emulsifying asphalt or polymer modified asphalt, the spread quantity of the binding material
Obtained according to shearing test, the base bitumen that it is used is identical with bituminous mixtures for pavement surface.
According to coiled material described in the utility model, it is characterised in that described rubble is 4.75-9.5mm single particle size
Rubble, its completely paving rate scope is between 60%-80%.
According to coiled material described in the utility model, it is characterised in that described upper separation layer is bonded in above crushed stone sealing,
Upper separation layer is any of materials such as polyester film (PET), polyethylene film (PE), aluminium foil or day silicon barrier film, and rubble is sealed
Layer is isolated and protected.
According to coiled material described in the utility model, it is characterised in that described web width can be different according to lane width
And specific shaping, and it is rollable into barrel mast progress packed and transported.
By above technical measures, solves on-site layering construction by environmental constraints, binding material dispenses uniformity, flexible soil
The uppity technical problem of the site operation such as the easy fold of work cloth, Yi Songla；It is main reached reduction on-site construction processes, when
Between, and realize that geotextiles pave and smooth out good corrugationless, binding material spreading uniformity, preventing and treating reflection crack and water-protected enclosure function pole
The technique effect strengthened greatly.
A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid described in the utility model, due to the volume
The material characteristic and combination that material structure sheaf uses, it is used to prevent and treat the geotextiles of reflection crack and broken by what conventional on-site paved
Two kinds of Material claddings of stone sealing form a kind of combining structures, there is provided geotextiles and the compound counnter attack energy of two kinds of measures of crushed stone sealing
Power, the composite construction of formation can greatly reduce the adverse effect with delayed reflex crack, and with the water-protected enclosure work(of enhancing
Can, the long-term behaviour for effectively improving semi-rigid asphalt pavement is stable；Meanwhile this patent formed one kind can batch production it is accurate
Shaping, the prefabricated coiled material structure of integrated construction, solve live crushed stone sealing and dispense uneven, overcome the flexible geotextiles in scene easy
The site operation such as fold, Yi Songla quality is difficult to control problem, possesses reduction scene and restricts, save the engineering time, ensure construction
Quality, the anti-minus effect of lifting, reduce the remarkable results such as environmental pollution.
The utility model compared with prior art, has advantages below and effect：
1. due to using prefabrication coiled material, construction condition limitation, including live low temperature, strong wind, rain can be reduced
The factors such as snow restrict.
2. prior art is all completed by site operation, each according to construction organization step after priming construct is completed 1 day
Layer construction；During using the utility model, after priming construct completion is qualified, you can lay the utility model volume according to field condition
Material, one-shot forming.Reduce construction link, shorten the place maintenance before different working procedure constructions, curing time, strengthen each work
Linking between sequence coordinates, and reduces a large amount of intermediate links, greatly improves site operation efficiency.
3. the counnter attack ability with the two kinds of measures of traditional geotextiles and crushed stone sealing, the composite construction of formation can greatly subtract
Few and delayed reflex crack adverse effect, and with the water-protected enclosure function of enhancing, effectively improve Pavement Performance.
4. solve crushed stone sealing scene dispense homogeneity question, overcome flexible geotextiles scene pave easy fold, easily
The site operation quality such as pine drawing are difficult to control problem, can improve the long-term behaviour of pavement structure, ensure the good operation of highway, subtract
Few road maintenance cost caused by reflection crack increase, can save operation maintenance cost.
Illustrate accompanying drawing
Fig. 1 is a kind of coiled material schematic diagram for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid；
Fig. 2 is a kind of typical section structure sheaf (I-I sections) schematic diagram of coiled material；
Fig. 3 is the crushed stone sealing schematic diagram in a kind of web construction；
Fig. 4 is a kind of laying coiled material and does not lay coiled material pavement structure fatigue cracking experimental test comparison diagram；
There is coiled material to refer to the road surface for laying the utility model web construction in Fig. 4, no coiled material refers to not lay this practicality newly
The road surface of type web construction, just split and refer to that pavement structure crack just occurs, through referring to that pavement structure crack runs through whole road surface
Structure；
Wherein：In Fig. 1-Fig. 3, adhesion coating, 4- cracking resistances geotextiles, 5- rubbles seal under separation layer, 3- under 1- coiled materials, 2-
Layer, the upper separation layers of 6-, the upper adhesion coatings of 7-, 8- rubbles；
Embodiment
Embodiment 1：
As shown in Figure 1-Figure 3, a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid, it is by coiled material 1
Lower separation layer 2, lower adhesion coating 3, cracking resistance geotextiles 4, crushed stone sealing 5, upper separation layer 6 including being arranged in order from bottom to up form,
It is characterized in that：Lower separation layer 2 is only connected with lower adhesion coating 3, and lower adhesion coating 3 is connected with lower separation layer 2, cracking resistance geotextiles 4 respectively, broken
Stone sealing 5 is connected with cracking resistance geotextiles 4, upper separation layer 6 respectively, and upper separation layer 6 is only connected with crushed stone sealing 5, described rubble
Sealing 5 is made up of upper adhesion coating 7,8 mutual build-in of rubble；Wherein descend separation layer 2 and upper separation layer 6 (being peeled off during site operation)
Effect is advantageous to the curling packaging of coiled material just for the sake of playing insulation blocking effect；Wherein descend adhesion coating 3 be used for by coiled material 1 with
The base bond laid；Wherein cracking resistance geotextiles 4 and crushed stone sealing 5 are used to play compound anticracking waterproof action；Its medium stone
Sealing 5 is made up of 8 mutual build-in of upper adhesion coating 7 and rubble, mutually blending.
Described lower separation layer 2 is in the materials such as polyester film (PET), polyethylene film (PE), aluminium foil or day silicon barrier film
Any, described lower adhesion coating 3 is self-adhering-type modified asphalt material (base bitumen is identical with main stor(e)y asphalt), right
Lower adhesion coating 3 is isolated and protected, and is advantageous to the packed and transported of coiled material.
Described lower adhesion coating 3 is bonded in above lower separation layer 2 by compacting, is self-adhering-type bituminous binder, the drip of hot paving type
Blue or green binding material it is any, the spread quantity of the binding material obtains according to shearing test, its base bitumen used and drip
Blue or green surface layer mixture is identical.
Described cracking resistance geotextiles 4 are bonded in above lower adhesion coating 3 by compacting, and cracking resistance geotextiles 4 are polypropylene nonwoven
Geotextiles, its ultimate tensile strength >=10.5kN/m, CBR bursting strengths >=2.0kN, oil absorbency >=1.2kg/m2, be advantageous to shape
It is integral to bear inter-laminar stress, and there is waterproof action.
The described compacting of crushed stone sealing 5 is bonded in above cracking resistance geotextiles 4, is made up of upper adhesion coating 7,8 mutual build-in of rubble,
Thickness is no more than 0.6cm, can further enhance the waterproof anticracking effect of structure.
Described upper adhesion coating 7 is any of common heated bitumen, emulsified asphalt, modified emulsifying asphalt or polymer modified asphalt
Kind (base bitumen is identical with main stor(e)y asphalt).
For the rubble of single particle size scope, (4.75-9.5mm, Particle size requirements meet the rubble 8《Asphalt highway is applied
Work technical specification》JTG F30).
Described upper separation layer 6 is bonded in above crushed stone sealing 5, and upper separation layer 6 is polyester film (PET), polyethylene film
(PE), any of aluminium foil or day silicon barrier material.
The specific connection of above-mentioned each interlayer of coiled material is as follows：
1. it is 3.75m according to the selected lower spacer width of lane width；
2. lower adhesion coating 3 is bonded in above lower separation layer 2, lower adhesion coating is isolated and protected；
3. cracking resistance geotextiles 4 are bonded in above lower adhesion coating 3, waterproof anticracking structure is formed；
4. the synchronous sprinkling of upper adhesion coating 7, rubble 8 is bonded in above cracking resistance geotextiles, and mutually build-in bonds, and preliminarily forms not
The crushed stone sealing 5 of compacting；
5. uncompacted crushed stone sealing 5 is bonded in above cracking resistance geotextiles through compacting, the crushed stone sealing of dense state is formed
5, its thickness is no more than 0.6cm, completely paving rate 70%, further enhances waterproof coiled material anti crack performance；
6. upper separation layer 6 is bonded in above crushed stone sealing 5, crushed stone sealing is isolated and protected；
7. after being cooled to normal temperature (being not higher than 30 DEG C), above-mentioned stacking consolidated structure is curled into barrel mast, in favor of bag
Ship defeated.
A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid, can effectively reduce on-site layering construction
Process, can be achieved sandwich construction batch production is prefabricated, integrated construction；The composite junction of cracking resistance geotextiles and crushed stone sealing composition
Structure, it can delay and reduce the development and extension of Semi-rigid Base Reflective Crevice, and road table rainwater can be avoided as waterproof construction
Under ooze.
A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid, performance test are as follows：
The fatigue life on road surface and fracture intensity under different operating modes are determined by testing, evaluates the effect of web construction
Effect.Coiled material test structure layer combination such as table 1 is not laid, and laying coiled material test structure layer combination such as table 2, test result is shown in Table 3
And Fig. 4.
The subgrade and pavement test structure of table 1 combines (not laying coiled material)
The subgrade and pavement test structure of table 2 combines (laying coiled material)
The crack of table 3 expands to different degrees of times of fatigue (ten thousand times)
As can be seen from Table 3, web construction is laid to the compound work of tensioning-shearing under the influence of vehicular load and environment
With caused reflection crack positive effect, significantly the appearance in delayed reflex crack and can run through.In experiment, laying group is reflecting
For loading number when crack is just split not lay 3.55 times of group, the loading number when reflection crack runs through is not lay group
3.25 again.
The shear strength overlayed under coiled material road surface and prior art (different defect ranks) operating mode is determined by testing
Situation, evaluate the action effect of the utility model coiled material.
Table 4 overlays coiled material and prior art difference operating mode shear strength contrast (MPa)
| Operating mode situation | Overlay coiled material (corrugationless) | Prior art (one of fold) | Prior art (twice fold) |
| Parallel test 1 | 0.636 | 0.604 | 0.515 |
| Parallel test 2 | 0.650 | 0.585 | 0.542 |
| Average value | 0.643 | 0.595 | 0.537 |
As can be seen from Table 4, fold easily be present according to the scene laying geotextiles of prior art, be bonded not close etc.
Defect, causes the shear strength of interlayer to reduce.Experiment shows：Prior art (one of fold) and prior art (twice fold) meeting
The shear strength of test specimen is set about to be reduced to and overlay the 92.5% and 83.5% of coiled material (corrugationless) situation.When on-site layering is constructed
Quality is poorer (fold quantity is more), and the influence to strength character decay is bigger.
Claims (7)
1. a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid, it is by coiled material（1）Including from bottom to up according to
Separation layer under secondary arrangement（2）, lower adhesion coating（3）, cracking resistance geotextiles（4）, crushed stone sealing（5）, upper separation layer（6）Composition, its feature
It is：Lower separation layer（2）With lower adhesion coating（3）It is connected, lower adhesion coating（3）Respectively with lower separation layer（2）, cracking resistance geotextiles（4）It is connected,
Crushed stone sealing（5）Respectively with cracking resistance geotextiles（4）, upper separation layer（6）It is connected, upper separation layer（6）With crushed stone sealing（5）It is connected,
Lower adhesion coating（3）Lower separation layer is bonded in by compacting（2）Above, cracking resistance geotextiles（4）Lower adhesion coating is bonded in by compacting（3）On
Face, crushed stone sealing（5）Cracking resistance geotextiles are bonded in by compacting（4）Above, upper separation layer（6）Rubble is bonded in by compacting to seal
Layer（5）Above, described crushed stone sealing（5）By upper adhesion coating（7）, rubble（8）Mutual build-in composition, thickness are no more than 0.6cm.
2. a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid according to claim 1, its feature
It is：Described lower separation layer（2）For any of polyester film, polyethylene film, aluminium foil or day silicon barrier material.
3. a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid according to claim 1, its feature
It is：Described upper separation layer（6）For any of polyester film, polyethylene film, aluminium foil or day silicon barrier material.
4. a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid according to claim 1, its feature
It is：Described lower adhesion coating（3）For self-adhering-type bituminous binder, hot paving type bituminous binder it is any.
5. a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid according to claim 1, its feature
It is：Described cracking resistance geotextiles（4）For polypropylene nonwoven geotextiles.
6. a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid according to claim 1, its feature
It is：Described upper adhesion coating（7）For any of common heated bitumen, emulsified asphalt, modified emulsifying asphalt or polymer modified asphalt
Kind.
7. a kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid according to claim 1, its feature
It is：Described rubble（8）For 4.75-9.5mm single particle size rubble, rubble（8）Completely paving rate is in 60%-80%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721040268.3U CN207210878U (en) | 2017-08-18 | 2017-08-18 | A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721040268.3U CN207210878U (en) | 2017-08-18 | 2017-08-18 | A kind of coiled material for being used to prevent and treat Reflective Crack over Asphalt Pavement with Semi-rigid |
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| CN207210878U true CN207210878U (en) | 2018-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056452A (en) * | 2018-09-18 | 2018-12-21 | 山东大山路桥工程有限公司 | A kind of the self-adhering-type water shutoff antiskid anti-crack road surface patch and its preparation, construction method of prefabrication |
| CN109056453A (en) * | 2018-09-18 | 2018-12-21 | 山东大山路桥工程有限公司 | A kind of the self-adhering-type road surface patch and its preparation, construction method of prefabrication |
-
2017
- 2017-08-18 CN CN201721040268.3U patent/CN207210878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056452A (en) * | 2018-09-18 | 2018-12-21 | 山东大山路桥工程有限公司 | A kind of the self-adhering-type water shutoff antiskid anti-crack road surface patch and its preparation, construction method of prefabrication |
| CN109056453A (en) * | 2018-09-18 | 2018-12-21 | 山东大山路桥工程有限公司 | A kind of the self-adhering-type road surface patch and its preparation, construction method of prefabrication |
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