CN105586819B - A kind of bituminous paving stress reflexion crack patching material and method for repairing and mending - Google Patents

A kind of bituminous paving stress reflexion crack patching material and method for repairing and mending Download PDF

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CN105586819B
CN105586819B CN201410563747.8A CN201410563747A CN105586819B CN 105586819 B CN105586819 B CN 105586819B CN 201410563747 A CN201410563747 A CN 201410563747A CN 105586819 B CN105586819 B CN 105586819B
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asphalt
pitch
crack
bituminous paving
patching material
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CN105586819A (en
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张建峰
郭皎河
刘树华
傅丽
姚汉荣
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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Abstract

A kind of method that crack repairing is carried out the invention discloses bituminous paving stress reflexion crack patching material and using the material.Patching material is Thief zone liquid asphalt and high-performance base joint grouting glue.Wherein base joint grouting glue is a kind of composite modification material containing rubber asphalt and polymer modified asphalt, by adding spacetabs type chemical modifier and being blown into oxygen in the preparation process of rubber asphalt, to improve and improve stability of the rubber powder in heated bitumen, SBS the or SBR modified pitch of a certain proportion of high polymer content is added in rubber asphalt afterwards, so that the base joint grouting glue of the present invention had both had the advantage of SBS modified pitch, there is the characteristics of rubber powder and asphalt again, possesses excellent high temperature stability performance, ageing resistace, low-temperature resistance cracking performance, anti-fatigue performance and interfacial bond property.

Description

A kind of bituminous paving stress reflexion crack patching material and method for repairing and mending
Technical field
The present invention relates to a kind of pavement patching material and method for repairing and mending, belong to technical field of highway maintenance technology.More particularly to one Kind is easy for construction, quick, the material and method for repairing and mending of Efficient software patching are fundamentally carried out to bituminous paving stress reflexion crack.
Background technology
With the development of national economy, the mileage of high-grade highway is continuously increased.For applicable high-grade highway heavy traffic, again Requirement of the load to road, using inorganic colloid methoder as basic unit, bituminous concrete is extensive for the semi-rigid pavement of surface layer Applied to high grade pavement, but find to there is serious crack problem by long-term use.For semi-rigid type base pitch Road surface, semi-rigid type base produce shrinkage cracking under thermograde and humidity change, then reflexed to upward along cracking basic unit Asphalt surface course and form crack, or under Driving Loading, crack extends up and shape along the semi-rigid type base to have ftractureed Into crack, it is clear that the generation of reflection crack is mainly that semi-rigid type base first ftractures, then through driving or temperature, humidity change and Cause asphalt surface course crack.The presence of reflection crack has not only broken up the globality and continuity on road surface, and with rainwater or Snow-broth penetrates into so that basic unit softens, and under a large amount of traffic load repeated actions, causes the top course fragmentation of crack both sides and causes There are the diseases such as loose, pit-hole, purt slurry and passage in road surface, seriously affects the performance on road surface, accelerates the destruction on road surface, contracts The service life of short pavement structure.
CN101676492 discloses a kind of method of repairing asphalt pavement cracks.The patent is stitched by cold-penetration of emulsified asphalt Material, crack repairing is carried out using grooving processes.Using emulsified asphalt as gap-grouting material although with good mobility, base joint grouting glue energy Crack is more penetrated into, but emulsified asphalt has the shortcomings such as poor high temperature stability, elastic recovery properties are poor and adhesion strength is low.
CN102492392A discloses a kind of road surface high viscosity Sticky Note and preparation method thereof.The patent uses pitch, changed Property agent, tire powder, age resister, toughener, resin, fiber and ultra-violet absorber are prepared into crack patching material, then Being processed into coiled material by three-roller forming machine turns into Sticky Note, and road pavement crack is repaired at any time.Sticky Note has convenient and swift The advantages that, shortcoming be Sticky Note thickness typically in 2mm or so, therefore can be slightly higher than road surface after constructing, influence driving comfortableness and Road surface it is attractive in appearance.And for compared with wide seam, using Sticky Note repairing, easily Sticky Note occur is torn phenomenon.
CN103589390A discloses a kind of pavement crack repair material and preparation method thereof.The patent using rubber powder, The materials such as modifying agent, plasticizer, softening oil, tackifier are prepared, and the pavement crack repair elastic properties of materials recovers to be less than 60%, in addition, not specifying its application method and repair efficiency in patent yet.
Using emulsified asphalt as crack patching material, performance deficiency be present in terms of material for repairing high temperature performance and caking property.With Modified pitch is patching material, is such as repaired using not notch and fill slot technique, because the viscosity of modified pitch is big, permeability of trickling Can be poor, it is considerably less to pour into the pitch of pavement crack, therefore it is general use grooving processes, but also only modified pitch to pitch Top course gap is filled up, and basic crack still has, and is cured the symptoms, not the disease.In addition, slotted using groover During can fracture edge fine cracks cause secondary damage, even if fracture embedding finishes, rainwater can also be from edge of crack Enter in fine cracks, cause casting glue to fail.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of repairing repaired to bituminous paving stress reflexion crack Material and the method that crack repairing is carried out using the material.
To reach above-mentioned purpose, the present invention provides a kind of Thief zone liquid asphalt and high-performance gap-grouting material and split as road surface Patching material is stitched, the method that crack repairing is carried out using grooving processes.Its medium to high permeable liquid asphalt carries out the envelope of basic crack It is stifled, and high-performance gap-grouting material carries out the repairing of top-crack, concrete technical scheme is as follows：
The present invention provides a kind of bituminous paving stress reflexion crack patching material, wherein including a kind of liquid asphalt and one kind High-performance base joint grouting glue is as pavement crack repair material.The high-performance base joint grouting glue includes a kind of rubber asphalt, the rubber asphalt In terms of weight/mass percentage composition, including：
Matrix pitch 78%-84.5%
Waste Crumb rubber 15%-20%
Spacetabs type chemical modifier 0.5%-2%.
The spacetabs type chemical modifier is a kind of high temperature initiation type chemistry chemical modifier using polymer wrapped, is gathered Compound is commercial anionic or cationic SBR latex, and latex solid content is more than 20%, and preferably solid content is more than 40% SBR glue Breast.
The spacetabs type chemical modifier of the present invention is the chemical modifier that SBR latex is enclosed with using spray pattern.By SBR Latex is uniformly wrapped up chemical modifier at normal temperatures using spray pattern, chemical modifier is uniformly superscribed one Layer SBR latex.It is air-dried at normal temperatures after parcel, removes the moisture in SBR latex.
The spacetabs type chemical modifier wherein chemical modifier of the present invention can be azodiisobutyronitrile, benzoyl peroxide In one kind.
Wherein described base joint grouting glue, in addition to comprising the rubber asphalt, also comprising a kind of SBS or SBR modified pitch, with quality Percentage composition meter, its constituent content are：
Rubber asphalt 30%-60%
SBS or SBR modified pitch 40%-70%
Base joint grouting glue mesostroma pitch of the present invention can be that decompression residuum, straight asphalt or mediation technique obtain The various pitches such as mediation pitch, matrix pitch needle penetration（25℃）110-130 1/10 mm.
The waste tire rubber powder that waste Crumb rubber produces for radial or bias tire in base joint grouting glue of the present invention, rubber powder Grain size is generally the rubber powder by 60 mesh sieve holes, and the requirement of rubber powder quality index should meet vulcanized rubber powder technical indicator （GB/T 19208-2008）Middle highway modified pitch rubber powder index request.
SBS or SBR modified pitch is the modified pitch of high polymer content, preferably SBS modified pitch in the present invention, is polymerize Thing content is in 6%-8%, needle penetration（25℃）：60-80 1/10mm.
Base joint grouting glue preparation method of the present invention is as follows：
（1）Matrix pitch is heated to 180 DEG C~190 DEG C, a certain proportion of waste Crumb rubber is added and stirs 10~15 minutes；
（2）It is ground 2~3 times by colloid mill, continues stirring after grinding 1~2 hour；
（3）A certain proportion of spacetabs type chemical modifier is added to stir；
（4）Compressed air is persistently blown into from stirring pot bottom and continues stirring 1~2 hour.Stop being blown into pressure afterwards Contracting air.
（5）Add equivalent high polymer content SBS or SBR modified pitch, continue stir 1-2 hours obtain this hair Bright cementation of fissures glue material.
Compressed air air quantity：0.05-0.5m3×kg-1×h-1。
Wherein liquid asphalt be Thief zone liquid asphalt in terms of weight/mass percentage composition including following components：
Pitch 55%-74%
Diluent 25%-40%
Bleeding agent 1%-5%
In Thief zone liquid asphalt of the present invention, pitch can be A levels pitch or polymer modified asphalt, and preferably SBS is modified Pitch, needle penetration（25℃）60-100 1/10mm.
Diluent is gasoline, kerosene and No. 0 diesel oil according to 1.5~2.0 in Thief zone liquid asphalt of the present invention：1：0.4.Its Middle gasoline is the commercially available gasoline for not adding ethanol, and kerosene is preferably aviation kerosine.
Bleeding agent can be nonionic, anionic bleeding agent in Thief zone liquid asphalt of the present invention, such as：Alkyl polyoxy One or more of mixtures in vinethene, AEO, sodium dioctyl sulfosuccinate.
The Thief zone liquid asphalt preparation method of the present invention is as follows：
（1）Pitch is heated first, A level pitches are heated to 110-120 DEG C, after SBS modified pitch is heated to 130-140 DEG C Stop heating, then stir while add bleeding agent, stirring 5-10 minutes.
（2）Diluent is slowly added to, continues to stir 10-20 minutes.Diluent wherein can also be first added, is finally added Enter bleeding agent.
A kind of bituminous paving stress reflexion crack patching material and method for repairing and mending, the method for repairing and mending comprise the following steps：
(1) close traffic.Safety sign is put according to the rules, if special messenger directs traffic, and according to project progress with time shift Dynamic sign board.
(2) size carries out fluting operation along fractuer direction as requested, and fluting size Control is in about wide 1.5cm, depth 1.8cm。
(3) cleaning fluting.After fluting, carry out blowing seam using pressure-air, afterwards, dust is cleared up with Strongh vacuum cleaner And aggregate chips.
(4) cementation of fissures.Thief zone liquid asphalt is heated to 50-100 DEG C, using high pressure Filling Technology, by hypertonic transflective liquid Pitch pours into basic crack, and to being infiltrated around groove.Thief zone liquid asphalt is filled after basic crack toward pouring into groove Base joint grouting glue.When tank seam glue being heated into 180-200 DEG C before encapsulating, at this moment there is scraping device with what pouring machine carried Pressure nozzle uniformly pours into fluid sealant in groove, can open to traffic after base joint grouting glue temperature drops to normal temperature.
Compared with prior art, the present invention has following technical advantage and feature：
（1）The base joint grouting glue of the present invention includes rubber asphalt and SBS the or SBR modified pitch of high polymer content causes this hair Bright base joint grouting glue has the advantage of SBS modified pitch, there is the characteristics of rubber powder and asphalt again, therefore possesses excellent high-temperature stable Performance, ageing resistace, low-temperature resistance cracking performance, anti-fatigue performance and interfacial bond property.
（2）There is serious segregation phenomenon in waste Crumb rubber, envelope mouth is easily blocked as gap-grouting material in heated bitumen, to applying Work is made troubles.In addition, rubber powder, which isolates, make it that asphalt performance is unstable, the crack of repairing is fragile.Therefore, prepared by the present invention During, add spacetabs type chemical modifier and be blown into oxygen, spacetabs type chemical modifier is along with SBR outside shell in pitch Scattered, the chemical modifier in shell will continue gradually to degrade to the rubber powder in rubber asphalt under the effect of the oxygen, carry Ductility (5 DEG C) and elasticity high and that improve stability and base joint grouting glue of the rubber powder in heated bitumen recover (25 DEG C).This hair Bright gap-grouting material can be under 180 DEG C of hot conditions, static storage 48h, and rubber powder does not occur substantially to settle, in cementation of fissures process In will not plug nozzle.
（3）Bleeding agent is added in the Thief zone liquid asphalt of the present invention, liquid asphalt oozing in basic unit can be strengthened Thoroughly.
（4）The present invention first pours into Thief zone liquid asphalt during the cementation of fissures, and low viscosity Thief zone liquid asphalt is on the one hand It can penetrate into the fine cracks of basic crack and edge of crack, fracture is effectively blocked, and prevents rainwater further to base The destruction of layer.On the other hand, the basic unit of cracking can be made to form an entirety.
（5）The present invention can infiltrate during Thief zone liquid asphalt is poured into two walls slotted, can be more preferable Base joint grouting glue is set to be bonded together with bituminous concrete slotted wall.
（6）The crack patching material and method for repairing and mending of the present invention fundamentally can enter to bituminous paving stress reflexion crack Row Efficient software patching, repair efficiency are good.
Embodiment
The process and effect of the present invention is further illustrated with reference to embodiment, but following examples are not formed to this hair Bright limitation.
Thief zone liquid asphalt：
Embodiment 1
（1）By No. 93 gasoline, aviation kerosine and No. 0 diesel oil according to 2：1：0.4 mass ratio is well mixed to be configured to dilute Agent is stand-by.
（2）Needle penetration（25 DEG C, 0.1mm）61 Zhenghai SBS modified pitch（60%）, stop heating after being heated to 140 DEG C, Under stirring, alkyl polyoxyethylene ether is added（4%）Stirring 5 minutes.It is eventually adding the diluent configured（36%）, stirring 15 minutes Thief zone liquid asphalts for obtaining the present invention.
Embodiment 2
（1）By No. 93 gasoline, aviation kerosine and No. 0 diesel oil according to 1.5：1：0.4 mass ratio is well mixed be configured to it is dilute It is stand-by to release agent.
（2）Needle penetration（25 DEG C, 0.1mm）61 Zhenghai A level pitches（70%）Stop heating after being heated to 120 DEG C, while stirring Mix while adding configured good diluent（28%）, stir 5 minutes.It is eventually adding AEO（2%）Continue to stir Mix the Thief zone liquid asphalt for obtaining the present invention for 20 minutes.
Base joint grouting glue：
Embodiment 3
（1）By needle penetration（25℃）For 110 Zhenghai matrix pitch（83%）180 DEG C -190 DEG C are heated to, 60 mesh is added and gives up Tyre rubber powder（16%）1h is stirred in tank is developed all over afterwards through high shear grinding 2-3,
（2）Add 1% spacetabs type chemical modifier（Benzoyl peroxide）, after stirring, compression is passed through from tank bottom Air.Air quantity is 0.2 m3×kg-1×h-1.Continue stirring 1 hour, stop being blown into compressed air afterwards.
（3）Add the SBS modified pitch of equivalent（SBS contents：6%, needle penetration（25℃）：70 1/10mm）Continue stirring 1 Hour.Obtain the base joint grouting glue of the present invention.
Embodiment 4
（1）By needle penetration（25℃）For 110 Zhenghai matrix pitch（80.5%）180 DEG C -190 DEG C are heated to, adds 80 mesh Waste tire rubber powder（18%）1h is stirred in tank is developed all over afterwards through high shear grinding 2-3,
（2）Add 1.5% spacetabs type chemical modifier（Azodiisobutyronitrile）, after stirring, pressure is passed through from tank bottom Contracting air.Air quantity is 0.4 m3×kg-1×h-1.Continue stirring 1.5h to terminate, stop being blown into compressed air afterwards.
（3）Add the SBS modified pitch of equivalent（SBS contents：7%, needle penetration（25℃）：65 1/10mm）Continue stirring 2 Hour.Obtain the base joint grouting glue of the present invention.
Base joint grouting glue comparative example 1：
（1）By needle penetration（25℃）For 110 Zhenghai matrix pitch（82%）180 DEG C -190 DEG C are heated to, 60 mesh is added and gives up Tyre rubber powder（18%）1h is stirred in tank is developed all over afterwards through high shear grinding 2-3,
（2）Add the SBS modified pitch of equivalent（SBS contents：7%, needle penetration（25℃）：65 1/10mm）Continue stirring 2 Hour.
Base joint grouting glue comparative example 2
（1）By needle penetration（25℃）For 110 Zhenghai matrix pitch（80.5%）180 DEG C -190 DEG C are heated to, adds 80 mesh Waste tire rubber powder（18%）1h is stirred in tank is developed all over afterwards through high shear grinding 2-3,
（2）1.5% azodiisobutyronitrile is added, after stirring, compressed air is passed through from tank bottom.Air quantity is 0.4 m3 ×kg-1×h-1.Continue stirring 1.5h to terminate, stop being blown into compressed air afterwards.
（3）Add the SBS modified pitch of equivalent（SBS contents：7%, needle penetration（25℃）：65 1/10mm）Continue stirring 2 Hour.Obtain the base joint grouting glue of the present invention.
In order to further embody the permeance property of the Thief zone liquid asphalt of the present invention, the present invention will be hypertonic in embodiment Transflective liquid pitch and it is traditionally used for the emulsified asphalt of permeable layers and kerosene cutback asphalt has carried out permeability test contrast, the present invention High osmosis liquid asphalt permeance property be substantially better than traditional permeable layers emulsified asphalt and kerosene cutback asphalt.
Thief zone liquid asphalt permeability test
Permeability testing method：Will be by river sand：Cement：Water=20：1：1 ratio mix and stir after mixture laying on paper, Or be fitted into diameter 5cm plastic mould, slight tamping, permeable layers oil samples are being added dropwise thereon.
The liquid asphalt permeability test of table 1
Note：（1）Permeable layers emulsified asphalt is PA-2 type anion sprinkling emulsified asphalts
（2）Kerosene cutback asphalt is medium-curing liquid asphalt AL（M）- 2 types.
Wherein particular technique index is with reference to highway asphalt construction technique normalizing（JTG F40-2004）
The base joint grouting glue property of table 2
From the above it can be seen that：
（1）The base joint grouting glue of the present invention have compared with SBS modified pitch high viscous, high-elastic, excellent high temperature performance and Ageing resistace.
（2）The present invention can be seen that during base joint grouting glue is prepared by comparing embodiment 3 and base joint grouting glue comparative example, lead to Cross addition spacetabs type chemical modifier and be blown into oxygen, significantly improve and improve stability of the rubber powder in heated bitumen.So that The gap-grouting material of the present invention can be under 180 DEG C of hot conditions, and static storage 48h, rubber powder does not occur substantially to settle, in the cementation of fissures During will not plug nozzle, convenient construction.
(3) by embodiment (4) and base joint grouting glue comparative example 2 it can be seen that spacetabs type chemical modifier is added, along with change It is scattered in pitch to learn modifying agent shell SBR, the chemical modifier in shell will continue gradually to work, and rubber powder is degraded More fully, stability of the rubber powder in pitch is not only significantly improved, and base joint grouting glue ductility (5 DEG C) and elasticity are recovered (25 DEG C) are bigger.
The bituminous paving stress reflexion crack repairing method of the present invention comprises the following steps：
(1) close traffic.Safety sign is put according to the rules, if special messenger directs traffic, and according to project progress with time shift Dynamic sign board.
(2) size carries out fluting operation along fractuer direction as requested, and fluting size Control is in about wide 1.5cm, depth 1.8cm。
(3) cleaning fluting.After fluting, carry out blowing seam using pressure-air, afterwards, dust is cleared up with Strongh vacuum cleaner And aggregate chips.
(4) cementation of fissures.Thief zone liquid asphalt is heated to 50-100 DEG C, using high pressure Filling Technology, by hypertonic transflective liquid Pitch pours into basic crack, and to being infiltrated around groove.Thief zone liquid asphalt is filled after basic crack toward pouring into groove Base joint grouting glue.When tank seam glue being heated into 180-200 DEG C before encapsulating, at this moment there is scraping device with what pouring machine carried Pressure nozzle uniformly pours into fluid sealant in groove, can open to traffic after base joint grouting glue temperature drops to normal temperature.

Claims (16)

  1. A kind of 1. bituminous paving stress reflexion crack patching material, it is characterised in that：Wherein include a kind of liquid asphalt and one kind High-performance base joint grouting glue, the high-performance base joint grouting glue include a kind of rubber asphalt, and the rubber asphalt is in terms of weight/mass percentage composition, bag Include：
    Matrix pitch 78%-84.5%
    Waste Crumb rubber 15%-20%
    Spacetabs type chemical modifier 0.5%-2%,
    The spacetabs type chemical modifier is a kind of high temperature initiation type chemical modifier using polymer wrapped, and polymer is the moon Ion or cationic SBR latex, latex solid content are more than 20%；
    The base joint grouting glue, in addition to comprising the rubber asphalt, also comprising a kind of SBS or SBR modified pitch, with weight/mass percentage composition Meter, its constituent content are：
    Rubber asphalt 30%-60%
    SBS or SBR modified pitch 40%-70%,
    The liquid asphalt is Thief zone liquid asphalt, including following components in terms of weight/mass percentage composition：
    Pitch 55%-74%
    Diluent 25%-40%
    Bleeding agent 1%-5%.
  2. 2. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The high temperature triggers Type chemical modifier is one kind in azodiisobutyronitrile, benzoyl peroxide.
  3. 3. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The polymer is Solid content is more than 40% SBR latex.
  4. 4. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：Described spacetabs type Chemical modifier is the chemical modifier that SBR latex is enclosed with using spray pattern.
  5. 5. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The matrix pitch It is decompression residuum, straight asphalt or reconciles the obtained mediation pitch of technique, matrix pitch needle penetration（25℃）110-130 1/10 mm。
  6. 6. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The waste Crumb rubber The waste tire rubber powder produced for radial or bias tire, rubber powder granular size are the rubber powder by 60 mesh sieve holes, The requirement of rubber powder quality index should meet highway modified pitch rubber powder index request in vulcanized rubber powder technical indicator.
  7. 7. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The SBS or SBR Modified pitch is the polymers in modified asphalt content of high polymer content in 6%-8%, needle penetration（25℃）：60-80 1/10mm.
  8. 8. according to the bituminous paving stress reflexion crack patching material described in claim 1 or 7, it is characterised in that：The modification Pitch is SBS modified pitch.
  9. 9. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The liquid asphalt In pitch be A levels pitch or polymer modified asphalt, needle penetration（25℃）60-100 1/10mm.
  10. 10. according to the bituminous paving stress reflexion crack patching material described in claim 9, it is characterised in that：The pitch is SBS modified pitch.
  11. 11. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The diluent It is for gasoline, kerosene and No. 0 diesel oil, its mass ratio：1.5~2.0：1：0.4.
  12. 12. according to the bituminous paving stress reflexion crack patching material described in claim 1, it is characterised in that：The bleeding agent It is one or more of mixtures in nonionic, anionic bleeding agent.
  13. 13. according to the bituminous paving stress reflexion crack patching material described in claim 12, it is characterised in that：The bleeding agent It is one or more of mixtures in alkyl polyoxyethylene ether, AEO, sodium dioctyl sulfosuccinate.
  14. 14. a kind of preparation method of any bituminous paving stress reflexion crack patching materials of claim 1-13, its feature It is：The preparation of the base joint grouting glue comprises the following steps：
    （1）Matrix pitch is heated to 180 DEG C~190 DEG C, the waste Crumb rubber for adding corresponding proportion stirs 10~15 minutes；
    （2）It is ground 2~3 times by colloid mill, continues stirring after grinding 1~2 hour；
    （3）The spacetabs type chemical modifier for adding corresponding proportion stirs；
    （4）Compressed air is persistently blown into from stirring pot bottom and continues stirring 1~2 hour, stops being blown into compression sky afterwards Gas；
    （5）SBS the or SBR modified pitch of the high polymer content of corresponding content is added, is continued to stir described in 1-2 hours obtain Cementation of fissures glue material.
  15. 15. according to the preparation method described in claim 14, it is characterised in that：Step（4）Described in compressed air air quantity be 0.05-0.5m3×kg-1×h-1。
  16. 16. a kind of bituminous paving stress reflexion crack repairing method, the method for repairing and mending comprise the following steps：
    (1) close traffic；
    (2) size carries out fluting operation along fractuer direction as requested；
    (3) cleaning fluting；
    (4) cementation of fissures：Thief zone liquid asphalt is heated to 50-100 DEG C, using high pressure Filling Technology, by Thief zone liquid asphalt Basic crack is poured into, and to being infiltrated around groove, Thief zone liquid asphalt is filled after basic crack toward pouring into the cementation of fissures in groove Glue, when base joint grouting glue being heated into 180-200 DEG C before encapsulating, the pressure with scraping device that is at this moment carried with pouring machine Shower nozzle uniformly pours into base joint grouting glue in groove, can open to traffic after base joint grouting glue temperature drops to normal temperature；
    Wherein, base joint grouting glue includes a kind of rubber asphalt, the rubber asphalt in terms of weight/mass percentage composition, including：
    Matrix pitch 78%-84.5%
    Waste Crumb rubber 15%-20%
    Spacetabs type chemical modifier 0.5%-2%,
    The spacetabs type chemical modifier is a kind of high temperature initiation type chemical modifier using polymer wrapped, and polymer is the moon Ion or cationic SBR latex, latex solid content are more than 20%.
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CN108911586A (en) * 2018-08-07 2018-11-30 广东金长成桥梁隧道科技有限公司 One kind being suitable for macropore slot gap-filling glue and its preparation, joint filling construction method
CN109457587A (en) * 2018-08-31 2019-03-12 重庆交通大学 Asphalt pavement crack fills out envelope restorative procedure
CN110330907A (en) * 2019-06-24 2019-10-15 中山市易路美智能装备有限公司 Self-adhering type polymer modified asphalt pressing belt and its construction method
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CN113004862A (en) * 2021-04-30 2021-06-22 河南公路卫士交通科技有限公司 Pavement crack joint adhesive, pavement crack joint adhesive structure and preparation method thereof

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