CN105926401A - Thin layer asphalt concrete structure for inhibiting pavement reflection cracks and paving method - Google Patents

Thin layer asphalt concrete structure for inhibiting pavement reflection cracks and paving method Download PDF

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Publication number
CN105926401A
CN105926401A CN201610312139.9A CN201610312139A CN105926401A CN 105926401 A CN105926401 A CN 105926401A CN 201610312139 A CN201610312139 A CN 201610312139A CN 105926401 A CN105926401 A CN 105926401A
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China
Prior art keywords
modified asphalt
layer
pavement
fiber
rubber
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Pending
Application number
CN201610312139.9A
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Chinese (zh)
Inventor
施曙东
左文
王晓杰
陆风云
何智龙
马利志
许严
姚凯
邱轶
钱婷
邓国民
徐韵淳
黄安
刘钢
李军代
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SHANGHAI HUIPU ENGINEERING INSPECTION Co Ltd
SHANGHAI PUDONG LUQIAO ASPHALTUM MATERIAL CO Ltd
SHANGHAI PUDONG ROAD BRIDGE CONSTRUCTION CO Ltd
Original Assignee
SHANGHAI HUIPU ENGINEERING INSPECTION Co Ltd
SHANGHAI PUDONG LUQIAO ASPHALTUM MATERIAL CO Ltd
SHANGHAI PUDONG ROAD BRIDGE CONSTRUCTION CO Ltd
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Application filed by SHANGHAI HUIPU ENGINEERING INSPECTION Co Ltd, SHANGHAI PUDONG LUQIAO ASPHALTUM MATERIAL CO Ltd, SHANGHAI PUDONG ROAD BRIDGE CONSTRUCTION CO Ltd filed Critical SHANGHAI HUIPU ENGINEERING INSPECTION Co Ltd
Priority to CN201610312139.9A priority Critical patent/CN105926401A/en
Publication of CN105926401A publication Critical patent/CN105926401A/en
Priority to PCT/CN2017/071316 priority patent/WO2017193629A1/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
    • E01C7/262—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with fibrous material, e.g. asbestos; with animal or vegetal admixtures, e.g. leather, cork
    • 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
    • E01C11/005—Methods or materials for repairing pavings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
    • E01C7/265—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with rubber or synthetic resin, e.g. with rubber aggregate, with synthetic resin binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Road Paving Structures (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a thin layer asphalt concrete structure for inhibiting pavement reflection cracks and a paving method. The thin layer asphalt concrete structure comprises an old cement concrete pavement, an anti-cracking layer, a rubber modified asphalt fiber gravel sealing layer and a special type gradation modified asphalt mixture surface layer from bottom to top. The anti-cracking layer comprises a plurality of anti-cracking patches. The rubber modified asphalt fiber gravel sealing layer is made of rubber modified asphalt, aggregate materials and fibers in a mixed mode and covers the anti-cracking layer and the whole pavement. The special type gradation modified asphalt mixture surface layer is formed by thinly spreading high-viscosity asphalt mixtures made of high-viscosity modified asphalt, the aggregate materials, fillers and fiber stabilizers in a mixed mode and covers the rubber modified asphalt fiber gravel sealing layer. According to the thin layer asphalt concrete structure for inhibiting the pavement reflection cracks and the paving method, generating and extension of the reflection cracks can be effectively inhibited, the service life of the pavement structure is prolonged, and the service condition of the pavement structure is improved; and the effects that the additional asphalt paving layer can bear temperature-shrinkage horizontal stress, disperse the perpendicular stress of the load of a vehicle and resist the buckling deformation of a cement plate block under the load of the vehicle are ensured.

Description

The thin-layer bituminous xoncrete structure of suppression reflection cracking in a pavement and method for paving
The application is divisional application, the filing date of original application on June 30th, 2014, Application No. " 201410306929.7 ", invention and created name is " the thin-layer bituminous xoncrete structure of suppression reflection cracking in a pavement and the side of mating formation Method ".
Technical field
The present invention relates to road engineering technical field, particularly relate to a kind of thin-layer bituminous coagulation suppressing reflection cracking in a pavement Soil structure and method for paving.
Background technology
Bituminous paving is become mainly to have two schemes concrete pavement rebuilding at present: one is rubblization, by cement-concrete road Face be broken into surface less than 8 centimetres, bottom less than 40 centimetres combine closely, the concrete block of internal embedded squeezing, again firm after Paving Bituminous Concrete layer again, the problem in crushed stone technology areflexia crack.But rubble operation that the shortcoming of this method has been many, The noise brought during increasing cost, and rubble has a strong impact on surrounding enviroment, and beneath pipeline also can be destroyed simultaneously.Another kind of Being direct Paving Bituminous Concrete structure sheaf on cement pavement, this method eliminates rubble operation, simple to operate, Bu Huiying Ring surrounding enviroment, be the more method of current domestic use, but reflection crack problem can be produced.The most more effectively suppress anti- Penetrate the generation in crack, be this scheme urgent need to solve the problem.
Both at home and abroad to the measure suppressing or slowing down Reflective Crack in Asphalt Overlays to produce still in test and heuristic process, mesh The main method of front employing has following several, such as: increases asphalt thickness, arrange rubble crack relief layer, at asphalt overlay And geotextiles, GSZ, modified pitch asphalt felt, steel wire or modification (rubber) Colophonium are set between Cement Concrete Pavement Slab Stress absorbing membrane etc..Owing to actual pavement crack producing cause is numerous, above scheme is only capable of the cracking resistance solved in a certain respect Property, therefore after engineer applied, the effect in inhibitory reflex crack does not highlight, and reflection crack often occurs earlier than expection. This area can effectively produce and the asphalt concrete structure of extension in inhibitory reflex crack in the urgent need to providing a kind of.
Summary of the invention
The purpose of the present invention, it is simply that propose a kind of can the generation in inhibitory reflex crack and extension effectively, improve road surface The thin-layer bituminous xoncrete structure of the suppression reflection cracking in a pavement of service life of structure and duty status and method for paving.
The present invention solves above-mentioned technical problem, it is provided that a kind of thin-layer bituminous concrete suppressing reflection cracking in a pavement is tied Structure, includes Old cement concrete, Anti-crack layer, rubber modified asphalt fiber crushed stone sealing and extraordinary grating from bottom to up Modified asphalt mixture surface layer, described Anti-crack layer includes that some Anticracking plasters, described Anticracking plaster are pasted onto described Deteriorated concrete pavement Adjacent boards block intersection on road surface, described rubber modified asphalt fiber crushed stone sealing by rubber modified asphalt, gather materials and Fiber is mixed, and covers on described Anti-crack layer and whole road surface, and described extraordinary grating modified asphalt mixture surface layer is by height Viscosity modified asphalt, gather materials, filler and fiber stabilizer are mixed and made into asphaltum with high viscosity compound and make thinner and form, cover described On rubber modified asphalt fiber crushed stone sealing.
Wherein, the high-viscosity modified asphalt volume of described extraordinary grating modified asphalt mixture surface layer is described extraordinary level The 5.2%-6.4% of allocation modifier asphaltic road-mix surface course quality；Gathering materials of described extraordinary grating modified asphalt mixture surface layer Including coarse aggregate and fine aggregate, described coarse aggregate is basalt or diabase, and described fine aggregate is limestone or basalt or brightness Greenstone；Described fiber stabilizer is polyester fiber, and average length is 5mm-6mm, and volume is that described extraordinary grating modified pitch mixes Close the 0.2%～0.4% of material layer quality.
It is further preferred that the rubber modified asphalt of described rubber modified asphalt fiber crushed stone sealing is in asphalt Fill the composite modified of rubber powder, SBS (SBS), kieselguhr roasting product and adjuvant Colophonium；Described rubber modified asphalt fiber crushed stone sealing gather materials for basalt that particle size range is 4.75mm～9.5mm or Diabase gravel；The fiber of described rubber modified asphalt fiber crushed stone sealing is glass fibre or polyester fiber, average length For 10mm-30mm.
It is further preferred that described asphalt is No. 90 A level asphalt, account for rubber modified asphalt quality 72～80 Part；Described rubber powder is rubber grain after waste tire is pulverized, and fineness of the particles is 60 mesh～80 mesh, accounts for rubber modified asphalt quality 17～21 parts；Described SBS is line style s-B-S three block Copolymer, molecular weight is 70000～200000, accounts for rubber modified asphalt quality 2～5 parts；The particle diameter of described kieselguhr roasting product It is 1000～1250 mesh, accounts for rubber modified asphalt quality 1～4 parts；Described adjuvant includes: plasticizer and antioxidant.
It is further preferred that described plasticizer is physics plasticizer, fineness >=180,000 mesh, described plasticizer accounts for modified rubber Asphalt quality 0～0.5 part；Described antioxidant is hindered phenol anti-oxidants, and fusing point is 110 DEG C～125 DEG C, fineness >=180,000 Mesh, accounts for rubber modified asphalt quality 0～0.5 part.
It is further preferred that described filler is levigate agstone.
It is further preferred that described extraordinary grating modified asphalt mixture surface layer grading limit is as follows:
It is further preferred that described high-viscosity modified asphalt is made up of No. 70 Colophoniumes and modifying agent, described modifying agent accounts for height The 6%～11% of viscosity modified asphalt oeverall quality；Described modifying agent be SBS, More than Petropols, aromatic naphtha, 1000 mesh levigate kieselguhr roasting product and the mixture of adjuvant；Described styrene-butadiene- Styrene triblock copolymer content is the 50%～60% of modifying agent total amount；Described adjuvant includes: antitack agent, plasticizer and anti- Oxidant.
It is further preferred that described Anticracking plaster is SBS autohension Anticracking plaster, width 40-60cm, thickness 3-4mm.
The present invention also proposes the method for paving of a kind of thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement, by following Step is mated formation:
A, adjacent boards block intersection paste Anticracking plaster；
B, spread rubber modified asphalt, spread quantity is 2kg/m2～3kg/m2, synchronizing to dispense fiber, spreading amount is 90g/m2 ～140g/m2, dispense hot rubble, coverage rate 80%～90%, use rubber-tyred roller to roll 1～2 time；
C, the asphaltum with high viscosity compound of the last thin layer that paves again form extraordinary grating modified asphalt mixture surface layer.
It is further preferred that first cement sheeting is carried out stabilization treatment before step a.
In sum, the present invention suppresses the thin-layer bituminous xoncrete structure of reflection cracking in a pavement and method for paving to have as follows Beneficial effect:
1, first the present invention by carrying out firm process to the cement plate on Old cement concrete, then first adjacent The intersection of cement sheeting pastes Anticracking plaster, thus is filled with consolidating by the space between every piece of adjacent boards, then passes through Rubber modified asphalt fiber crushed stone sealing with its on overlay extraordinary grating modified asphalt mixture surface layer formed suppression road surface anti- Penetrate the thin-layer bituminous xoncrete structure in crack, it is ensured that asphalt overlay can undertake the horizontal stress of temperature contracting, scattering vehicles lotus The vertical stress of load, opposing cement sheeting buckling deformation under Vehicle Load.
2, by 2 layers of paving structure of general pave-load layer, it is further simplified as the asphalt mixture surfacing of monolayer.Pass through modified rubber Pitch fibers crushed stone sealing undertakes horizontal stress and the strengthening interlaminar bonding of temperature contracting, is mixed by upper layer special type grating modified pitch Close mating formation of charge level layer, the vertical stress of scattering vehicles load, opposing cement sheeting buckling deformation under Vehicle Load. This structural grouping reduces overlay thickness further.
3, the structural grouping of the present invention is relative to existing correlation technique, further enhances rubber modified asphalt fiber broken Stone sealing and extraordinary grating modified asphalt mixture surface layer, make both strength and toughness relatively prior aries have and carry by a relatively large margin High.
Detailed description of the invention
In specific implementation process, technical staff can carry out, according to the teachings of the present invention and actual needs, suppression road of mating formation The thin-layer bituminous xoncrete structure of face reflection crack, the thin-layer bituminous xoncrete structure of the suppression reflection cracking in a pavement of the present invention is certainly Lower and Shangdi includes Old cement concrete, Anti-crack layer, rubber modified asphalt fiber crushed stone sealing and extraordinary level allocation modifier Asphaltic road-mix surface course, described Anti-crack layer includes that some Anticracking plasters, described Anticracking plaster are pasted onto described Old cement concrete On adjacent boards block intersection, described rubber modified asphalt fiber crushed stone sealing by rubber modified asphalt, gather materials and fiber Being mixed, cover on described Anti-crack layer and whole road surface, described extraordinary grating modified asphalt mixture surface layer is by high viscosity Modified pitch, gather materials, filler and fiber stabilizer are mixed and made into asphaltum with high viscosity compound and make thinner and form, cover at described rubber On modified pitch fiber crushed stone sealing.Design parameter is as follows further:
The rubber modified asphalt of described rubber modified asphalt fiber crushed stone sealing is admixture rubber powder, benzene in asphalt Ethylene-butadiene-styrene triblock copolymer, kieselguhr roasting product and the composite modified asphalt of adjuvant；Described modified rubber Gathering materials for basalt that particle size range is 4.75mm～9.5mm or diabase gravel of pitch fibers crushed stone sealing；Described rubber The fiber of glue modified pitch fiber crushed stone sealing is glass fibre or polyester fiber, and average length is 10mm-30mm.
Described asphalt is No. 90 A level asphalt, accounts for rubber modified asphalt quality 72～80 parts；Described rubber powder is Waste tire pulverize after rubber grain, fineness of the particles is 60 mesh～80 mesh, accounts for rubber modified asphalt quality 17～21 parts；Described benzene Ethylene-butadiene-styrene triblock copolymer is line style SBS, and molecular weight is 70000～200000, account for rubber modified asphalt quality 2～5 parts；The particle diameter of described kieselguhr roasting product is 1000～1250 mesh, Account for rubber modified asphalt quality 1～4 parts；Described adjuvant includes: plasticizer and antioxidant.
Described plasticizer is physics plasticizer, fineness >=180,000 mesh, is mainly composed of zinc stearate, and described plasticizer accounts for rubber Glue modified pitch quality 0～0.5 part；Described antioxidant is hindered phenol anti-oxidants, and fusing point is 110 DEG C～125 DEG C, fineness >=18 ten thousand mesh, account for rubber modified asphalt quality 0～0.5 part.
Exemplary, the preparation method of described rubber modified asphalt is: rubber powder and s-B-S three Block copolymer should in No. 90 asphalt swelling 30min～90min, be subsequently adding kieselguhr roasting product, pass through colloid mill Shear 30min～60min, be eventually adding adjuvant and stir.Implementation process is as follows: uses and synchronizes fiber chip sealer, spread rubber Glue modified pitch, spread quantity is 2kg/m2～3kg/m2, using and synchronize distribution vehicle spreading fiber, spread quantity is 90g/m2～140g/ m2, immediately following using broken stone distributor, (through dedusting and 1% Colophonium premixing, during spread, temperature should be greater than rubble to dispense hot rubble 100 DEG C), coverage rate 80%～90%, use rubber-tyred roller to roll 1～2 time after rubble spread.
The high-viscosity modified asphalt volume of described extraordinary grating modified asphalt mixture surface layer is that described extraordinary grating changes The 5.2%-6.4% of property asphaltic road-mix surface course quality；Described special type includes gathering materials of grating modified asphalt mixture surface layer Coarse aggregate and fine aggregate, described coarse aggregate is basalt or diabase, and described fine aggregate is limestone or basalt or diabase； Described fiber stabilizer is polyester fiber, and average length is 5mm-6mm, and volume is described extraordinary grating modified asphalt mixture face The 0.2%～0.4% of layer quality；Described filler is levigate agstone.By the high-viscosity modified asphalt of the component of aforementioned proportion, Gather materials, that filler and fiber stabilizer are mixed and made into asphaltum with high viscosity compound is standby, and its voidage is 2～4%.Actually used Time, available pitch sprinkling car carries out layer paving, and the thin layer that paves can form extraordinary grating modified asphalt mixture surface layer.
For avoiding the occurrence of skid resistance and reduce, easily the problems such as reflection crack phenomenon, the extraordinary level allocation modifier of the present embodiment occurring The asphaltum with high viscosity concrete (thickness is 35～45mm) that asphaltic road-mix surface course only uses nominal maximum particle diameter to be 13.2mm.
Described extraordinary grating modified asphalt mixture surface layer grading limit is as follows:
Described high-viscosity modified asphalt is made up of No. 70 Colophoniumes and modifying agent, and it is total that described modifying agent accounts for high-viscosity modified asphalt The 6%～11% of weight；Described modifying agent is SBS, Petropols, aromatic hydrocarbons More than oil, 1000 mesh levigate kieselguhr roasting product and the mixture of adjuvant；Described s-B-S three block Copolymer level is the 50%～60% of modifying agent total amount；Described adjuvant includes: antitack agent, plasticizer and antioxidant.
The preparation method of described modifying agent is as follows: by the s-B-S of 50%～60% percentage by weight Triblock copolymer (SBS), 12%～41% Petropols, 0%～26% kieselguhr of percentage by weight of percentage by weight Roasting product, 0～3% adjuvant mix homogeneously in high-speed mixing equipment of percentage by weight, then with 8%～37% percentage by weight Aromatic naphtha be stirred mixing, by screw extruder extrude, pelletizing, extrusion temperature controls at 120～200 DEG C, cooling After the most prepared.
When being embodied as, should by above-mentioned modifying agent with gather materials, fiber stabilizer mixes and stirs more than 15 seconds at 175 DEG C～185 DEG C, It is subsequently adding No. 70 asphalt and filler, continues to mix and stir 40 seconds under the conditions of 175 DEG C～185 DEG C, extraordinary grating can be formed Modified asphalt mixture.Transport to road on-the-spot, use spreading machine to carry out pavement spread, use steel when 155 DEG C～160 DEG C Roller frequency low-amplitude vibroroller cmpacting 2～3 times (roll back and forth and be calculated as 1 time), use when mixture temperature 80 DEG C～100 DEG C Pneumatic-tired rollers roll 2 times, finally use the quiet stone roller of steel roller 1～2 times.
Described Anticracking plaster is SBS autohension Anticracking plaster, width 40-60cm, thickness 3-4mm, and its performance indications meet " highway Engineering soil geosynthetics testing regulations " requirement of (JTG E50).In the present embodiment, each raw-material ratio can be according to reality The raw-material situation in border slightly adjusts.
The method for paving of the thin-layer bituminous xoncrete structure of the present embodiment suppression reflection cracking in a pavement, can enter according to the following steps Row is mated formation:
A, adjacent boards block intersection paste Anticracking plaster；
B, spread rubber modified asphalt, spread quantity is 2kg/m2～3kg/m2, synchronizing to dispense fiber, spreading amount is 90g/m2 ～140g/m2, dispense hot rubble, coverage rate 80%～90%, use rubber-tyred roller to roll 1～2 time；
C, the asphaltum with high viscosity compound of the last thin layer that paves again form extraordinary grating modified asphalt mixture surface layer.
Exemplary, first cement sheeting can be carried out stabilization treatment before step a.
With above-mentioned be only the preferred embodiment of the present invention, it is noted that for those skilled in the art For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should regard For protection scope of the present invention.

Claims (10)

1. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement, it is characterised in that: include from bottom to up haveing been friends in the past Cement concrete pavement, Anti-crack layer, rubber modified asphalt fiber crushed stone sealing and extraordinary grating modified asphalt mixture surface layer, institute State the adjacent boards block friendship that Anti-crack layer includes that some Anticracking plasters, described Anticracking plaster are pasted onto on described Old cement concrete At boundary, described rubber modified asphalt fiber crushed stone sealing by rubber modified asphalt, gather materials and fiber is mixed, cover described On Anti-crack layer and whole road surface, described extraordinary grating modified asphalt mixture surface layer by high-viscosity modified asphalt, gather materials, filler and Fiber stabilizer is mixed and made into asphaltum with high viscosity compound and makes thinner and form, and covers at described rubber modified asphalt fiber crushed stone sealing On；
The high-viscosity modified asphalt volume of described extraordinary grating modified asphalt mixture surface layer is described extraordinary level allocation modifier drip The 5.2%～6.4% of blue or green mixture surface course quality；
Described special type includes that coarse aggregate and fine aggregate, described coarse aggregate are the Black Warriors at gathering materials of grating modified asphalt mixture surface layer Rock or diabase, described fine aggregate is limestone or basalt or diabase；
Described fiber stabilizer is polyester fiber, and average length is 5mm～6mm, and volume is that described extraordinary grating modified pitch mixes Close the 0.2%～0.4% of material layer quality.
2. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as claimed in claim 1, it is characterised in that:
The rubber modified asphalt of described rubber modified asphalt fiber crushed stone sealing is admixture rubber powder, benzene second in asphalt Alkene-butadiene-styrene triblock copolymer, kieselguhr roasting product and the composite modified asphalt of adjuvant；
Gathering materials for basalt that particle size range is 4.75mm～9.5mm or brightness of described rubber modified asphalt fiber crushed stone sealing Greenstone rubble；
The fiber of described rubber modified asphalt fiber crushed stone sealing is glass fibre or polyester fiber, average length be 10mm～ 30mm。
3. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as claimed in claim 2, it is characterised in that: described stone Oil asphalt is No. 90 A level asphalt, accounts for rubber modified asphalt quality 72～80 parts；
Described rubber powder is rubber grain after waste tire is pulverized, and fineness of the particles is 60 mesh～80 mesh, accounts for rubber modified asphalt matter Measure 17～21 parts；
Described SBS is line style s-B-S triblock copolymer Thing, molecular weight is 70000～200000, accounts for rubber modified asphalt quality 2～5 parts；
The particle diameter of described kieselguhr roasting product is 1000～1250 mesh, accounts for rubber modified asphalt quality 1～4 parts；
Described adjuvant includes: plasticizer and antioxidant.
4. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as claimed in claim 3, it is characterised in that: described increasing Moulding agent is physics plasticizer, fineness >=180,000 mesh, and described plasticizer accounts for rubber modified asphalt quality 0～0.5 part；
Described antioxidant is hindered phenol anti-oxidants, and fusing point is 110 DEG C～125 DEG C, and fineness >=180,000 mesh account for modified rubber Asphalt quality 0～0.5 part.
5. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as claimed in claim 1, it is characterised in that fill out described in: Material is levigate agstone.
6. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as claimed in claim 5, it is characterised in that: described spy Plant grating modified asphalt mixture surface layer grading limit as follows:
7. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as claimed in claim 6, it is characterised in that: described height Viscosity modified asphalt is made up of No. 70 Colophoniumes and modifying agent, described modifying agent account for high-viscosity modified asphalt oeverall quality 6%～ 11%；Described modifying agent is more than SBS, Petropols, aromatic naphtha, 1000 mesh Levigate kieselguhr roasting product and the mixture of adjuvant；Described SBS content is for changing The 50%～60% of property agent total amount；Described adjuvant includes: antitack agent, plasticizer and antioxidant.
8. the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as claimed in claim 1, it is characterised in that: described anti- Split patch for SBS autohension Anticracking plaster, width 40-60cm, thickness 3-4mm.
9. the side of mating formation of the thin-layer bituminous xoncrete structure suppressing reflection cracking in a pavement as described in any one of claim 1-8 Method, it is characterised in that: mat formation according to the following steps:
A, adjacent boards block intersection paste Anticracking plaster；
B, spread rubber modified asphalt, spread quantity is 2kg/m2～3kg/m2, synchronizing to dispense fiber, spreading amount is 90g/m2~ 140g/m2, dispense hot rubble, coverage rate 80%～90%, use rubber-tyred roller to roll 1～2 time；
C, the asphaltum with high viscosity compound of the last thin layer that paves again form extraordinary grating modified asphalt mixture surface layer.
Method for paving the most according to claim 9, it is characterised in that: before step a, first cement sheeting is carried out stabilisation Dispose.
CN201610312139.9A 2014-06-30 2014-06-30 Thin layer asphalt concrete structure for inhibiting pavement reflection cracks and paving method Pending CN105926401A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201610312139.9A CN105926401A (en) 2014-06-30 2014-06-30 Thin layer asphalt concrete structure for inhibiting pavement reflection cracks and paving method
PCT/CN2017/071316 WO2017193629A1 (en) 2014-06-30 2017-01-16 Special grading modified asphalt mixture surface layer and paving method therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610312139.9A CN105926401A (en) 2014-06-30 2014-06-30 Thin layer asphalt concrete structure for inhibiting pavement reflection cracks and paving method
CN201410306929.7A CN104018410B (en) 2014-06-30 2014-06-30 Suppress thin-layer bituminous xoncrete structure and the method for paving of reflection cracking in a pavement

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CN112431084A (en) * 2020-11-11 2021-03-02 周静 Asphalt laying process for road construction
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