CN110004790A - A kind of composite road surface structure and maintenance process - Google Patents
A kind of composite road surface structure and maintenance process Download PDFInfo
- Publication number
- CN110004790A CN110004790A CN201910315764.2A CN201910315764A CN110004790A CN 110004790 A CN110004790 A CN 110004790A CN 201910315764 A CN201910315764 A CN 201910315764A CN 110004790 A CN110004790 A CN 110004790A
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- road surface
- asphalt
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Classifications
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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
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- 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
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
Abstract
The invention discloses a kind of composite road surface structures, belong to road engineering care field.The composite road surface structure include include that successively molding road surface carrying base, base are bonded and sealed layer, buffer layer, crushed stone sealing, composite road surface layer from top to bottom.The structure has the fast advantage of non-deformability strong, uniform force, gain in strength, shortens the maintenance close traffic time on road surface, can greatly improve the service life on road surface, reduces road surface period maintenance cost.The invention also discloses a kind of composite road surface structure and maintenance processes simultaneously.
Description
Technical field
The invention belongs to road engineering care fields, and in particular to a kind of public affairs based on superpower Rut resistance composite road surface structure
Road rapid curing method.
Background technique
Highway in China road surface is based on flexible bituminous pavement.While Transportation industry rapidly develops, highway construction
Imbalance between supply and demand with transport need development also increasingly sharpens, and especially Modern Traffic, transport truck significantly increase, transport
Vehicle develops to heavy-duty, enlarged direction, along with the volume of traffic increasingly increases it is very serious with automobile overload phenomenon, track by
Gradually become the Major Diseases of asphalt pavement of highway, traditional flexible bituminous pavement can not solve the track of current road
Disease problem.Therefore, it develops a kind of superpower Rut resistance road surface and is of great significance to asphalt pavement rut disease is solved.
Currently, both at home and abroad about solve asphalt pavement rut disease technical solution there are mainly two types of, first is that improve pitch
Mixture performance, by optimization asphalt be dense structure of skeleton improve pitch performance, using SBS modified pitch,
The means such as PE modified pitch and consideration addition anti-rut agent, but these technological means all can not solve pitch thoroughly
The track disease problem on road surface, because bituminous pavement is flexible material, as the growth of time must under the action of vehicular load
Surely it will appear track disease problem；Second is that replacement mix type, using cement concrete pavement, continuously reinforced concrete road
Face, although effective solution pavement track disease problem, since cement concrete pavement gain in strength is slow, health of constructing
Time is long, is not particularly well suited for that traffic pressure is big, can not long-time close traffic maintenance construction section, in addition, these road surfaces
The pavement diseases such as crack are usually easy to produce, road-ability is poor, and antiskid performance is insufficient, seriously affects traffic safety, supports simultaneously
It protects number to increase, virtually increases periodical maintenance cost.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide one kind to be based on superpower Rut resistance composite road surface structure
Highway rapid curing method, to solve the problems, such as the track disease existing in the prior art that can not thoroughly solve bituminous pavement.
To achieve the goals above, technical solution of the invention is as follows:
A kind of composite road surface structure, including successively molding road surface carrying base, base are bonded and sealed layer, buffering from top to bottom
Layer, crushed stone sealing, composite road surface layer.
Further, the compression strength of road surface carrying base is greater than 6.0MPa, to guarantee the good carrying energy in road surface
Power.
Further, the base is bonded and sealed material that layer uses as high glutinous emulsified asphalt or not viscous wheel emulsified asphalt；
The base be bonded and sealed layer material solid content be greater than 70%, normal viscosity 18-25s, softening point be greater than 70 DEG C, 5 DEG C
Ductility is greater than 40cm, and adhesive force pull strength is greater than 1.0MPa, to guarantee between cutting optimal and base good density and good
Good adhesive property.
Further, the material that the buffer layer uses is the pitch mixing for being added to polyester fiber or glass fibre reinforcement
Material；
The asphalt is AC-5 asphalt, AC-10 asphalt；
The polyester fiber or glass fibre addition content are 0.3-0.4%, can play effective buffering reflection crack disease
Problem.
Further, the crushed stone sealing includes rubble grain and wraps up in the rubber asphalt of attached rubble grain in advance；
The rubber powder volume of the rubber asphalt is 20-25%；
The softening point of the rubber asphalt is not less than 75 DEG C；
177 DEG C of Bu Shi viscosity 3-4pa.s of the rubber asphalt；
The elasticity of the rubber asphalt is restored to be greater than 80%；
The ballast grain sizes are 3-5mm or 5-10mm；
The content of the rubber asphalt is 0.4-0.5%；
Rubber asphalt wraps up in attached rubble kernel structure in advance can play the role of bonding surface layer up and down well, guarantee surface layer deformation up and down
Harmony, guarantee the uniform force on road surface, the traffic load on shared road surface.
Further, the composite road surface layer includes mother asphalt mixture and grouting material；
The mother asphalt mixture is skeleton gap structure, and voidage 20%-25%, stability is greater than 3KN, loss late of dispersing
Less than 30%；
The grouting material includes early-strength grouting material, and 3h compression strength is greater than 10MPa, and 3h flexural strength is greater than 2.5Mpa, stream
Dynamic degree is 12-16s, and the presetting period is less than 30min, and isolation rate is -0.10% ~+0.2% less than 5%, 60d volume change；
Mother asphalt mixture has enough voidages, it is ensured that the placeability of grouting material, lesser loss late of dispersing
It can guarantee not falling off for mother asphalt mixture, biggish stability can guarantee that the skeleton embedded squeezing of mother asphalt mixture is made
With；
Further, the composite pavement Rut resistance dynamic stability is greater than 30000 times/mm, it is ensured that composite pavement upper layer
Has excellent anti-rut behavior.
A kind of maintenance process of composite road surface structure, the described method comprises the following steps:
It rests shield road-surface milling to road surface and carries base, the upper surface sprinkling base of carrying base is bonded and sealed on the road surface
Layer；
It is bonded and sealed the upper surface making buffer layer of layer in the base；
Crushed stone sealing spread roller-compaction: successively spread rubber asphalt and rubble grain, roll to obtain crushed stone sealing；
The making of composite road surface layer: making rolls mother asphalt mixture, and grouting material is sprayed in mother asphalt mixture.
Further, the milling depth on the maintenance road surface is 7-12cm；
The base be bonded and sealed layer pitch sprinkling amount be 0.5-0.6kg/m2；
Ensure between protobitumen surface layer and road surface carrying base without weak interlayer, while base's layer pitch sprinkling amount that be bonded and sealed is
0.5kg/m2-0.6kg/m2；
Further, the buffer layer placement thickness is 1.0cm-3.0cm, and compaction requirement is greater than 99%, while guaranteeing cutting optimal
Asphalt flatness.
Further, the crushed stone sealing construction is the rubber asphalt of first spread 2.0kg/m2-2.2kg/m2, then spread
The pre- of 15kg/m2-17kg/m2 wraps up in attached rubble grain, and is rolled 2-3 times using heavy pneumatic-tired rollers, guarantees to wrap up in advance attached broken
Stone grain is firmly bonded with rubber asphalt；
Further, the placement thickness of the asphalt is 5cm-10cm, and the mode that rolls of asphalt is double steel wheels
Hydrostatic profile 3-5 times, guarantee asphaltic road-mix surface course flatness, while can satisfy the requirement of road surface voidage 20%-25% again.
Further, the pouring construction method of the grouting material includes:
Grouting material and the scheduled 0.28-0.32 ratio of mud are stirred evenly by mortar vehicle device, using pressure pump by grouting material
It is uniformly sprayed in asphalt, examines asphalt degree of filling at 90% or more, close traffic conserves 2-4h, multiple
It closes paving mix and forms intensity greater than 10MPa, superpower Rut resistance road surface can be formed.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1. a pavement structure is had excellent performance, is acted on by the stress buffer of buffer layer, improve the cracking resistance energy of whole pavement structure
Power ensure that the uniform force of pavement structure by the compatible deformation ability of crushed stone sealing, pass through the superelevation of composite road surface layer
Intensity ensure that the excellent anti-rut behavior of pavement structure；
2. the maintenance process of pavement structure is simple, construction efficiency is high, and intensity is formed fastly, vehicle big especially suitable for traffic pressure
The serious section maintenance construction of rut disease has very strong practical engineering value；
3. the highway rapid curing method of the superpower Rut resistance composite road surface structure can be with the track disease on effective solution road surface
Problem reduces the maintenance number on road surface, reduces the period maintenance cost on road surface, reduces influence of the construction to society, economic benefit
It is significant with social benefit.
Detailed description of the invention
Fig. 1 is a kind of superpower Rut resistance composite road surface structure schematic diagram provided by the invention；
Fig. 2 is a kind of superpower Rut resistance composite pavement provided by the invention and other road surfaces Rut resistance effect contrast figure.
Appended drawing reference: the road surface 1- carries base；2- base is bonded and sealed layer；3- buffer layer；
4- crushed stone sealing；5- composite road surface layer.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.It should be understood that following embodiment is merely to illustrate this
Invention is not for limiting the scope of the invention.
Embodiment 1
As shown in Figure 1, a kind of composite road surface structure, including successively molding road surface carrying base 1, base's bonding are close from top to bottom
Sealing 2, buffer layer 3, crushed stone sealing 4, composite road surface layer 5；Each layer, which successively forms, forms superpower Rut resistance pavement structure.
Wherein, the compression strength of road surface carrying base 1 is 7.2MPa；
Base's layer 2 that is bonded and sealed using type height is split fastly sticks emulsified asphalt, and the solid content of the glutinous emulsified bituminous materials of height is
71%, standard path viscosity 21s, softening point are 75 DEG C, and 5 DEG C of ductilities are 46cm, and adhesive force pull strength is 1.2MPa；
Buffer layer 3 using 0.3% reinforcement of polyester fiber volume AC-5 asphalt；
Crushed stone sealing 4 wraps up in the sealing of attached rubble grain using rubber asphalt in advance, and the rubber powder volume of rubber asphalt is 21%, rubber
The softening point of glue pitch is 81 DEG C, and 177 DEG C of Bu Shi viscositys are 3.5pa.s, and elasticity reverts to 84%, and wrapping up in attached ballast grain sizes in advance is
3mm-5mm, rubber asphalt content are 0.4%；
Road surface 5 is made of asphalt and grouting material, and the voidage of asphalt is 21%, and stability is
3.5KN, loss late of dispersing are 16%；Grouting material is early-strength grouting material, and 3h compression strength is 11.4MPa, and 3h flexural strength is
3.6MPa, fluidity 15s, isolation rate 1%, 60d volume change 0.1%.
A kind of maintenance process of composite road surface structure, comprising the following steps:
Composite pavement milling to road surface is carried into base 1, this milling depth is 8cm, and carries out cleaning dust removal process, it is ensured that road
Face is completely without floating dust, and high glutinous emulsified asphalt under spread, spread quantity 0.5kg/m2；
The making of buffer layer 3 is bonded and sealed the upper surface making buffer layer 3 of layer 2 in base, this uses AC-5 asphalt mixed soil
Cutting optimal placement thickness is 1.5cm, and compaction requirement reaches 99.5%, and road surface compacting is smooth；
4 spread roller-compaction of crushed stone sealing；Specially first spread 2.0kg/m2Rubber asphalt, then spread 15kg/m2It wraps up in advance attached
Rubble grain, rolled 2 times using heavy pneumatic-tired rollers, wrap up in attached rubble grain and rubber asphalt bonding jail after roller-compaction in advance
Gu；
The making of composite road surface layer 5, the placement thickness of road surface precursor mix are 6.5cm, and the mode that rolls of mixture is double steel
Wheel hydrostatic profile 3 times guarantees asphaltic road-mix surface course flatness, while can guarantee that road surface voidage is 24% again, meets indoor
Design the requirement of road surface precursor mix voidage；Carry out grouting construction later, use mortar vehicle device by grouting material and water with
The ratio of mud is 0.32, is stirred, and will be filled after the performance detections such as fluidity meet index request using pressure pump
Slurry is uniformly sprayed in the precursor mix of road surface, is kept precursor mix perfusion in road surface full, is detected this road surface parent
Mixture degree of filling average value is met the requirements 94%, and close traffic maintenance 3h composite pavement mixture forms superpower Rut resistance road
Face, open to traffic.
In order to detect the anti-rut behavior of this superpower Rut resistance composite road surface structure, after 3h intensity is formed, to former road surface
Carry out coring, using its Rut resistance effect of 60 DEG C of dynamic stability metrics evaluations of wheel tracking test, and under the same conditions with SMA pitch
Mixture, common AC asphalt, common AC asphalt+anti-rut agent are compared, obtained different pavement
60 DEG C of dynamic stability evaluation indexes are as shown in table 1, and dynamic stability comparing result is as shown in Figure 2.
Table 1 different pavement, 60 DEG C of dynamic stabilities
| Pavement Structure | Superpower Rut resistance road surface types | SMA-13 type | Common AC type | AC+ anti-rut agent type |
| 60 DEG C of dynamic stabilities (secondary/mm) | 58941 | 5000 | 1800 | 7500 |
Embodiment 2
A kind of composite road surface structure, the structure the difference from embodiment 1 is that, the coring resistance to compression of road surface therein carrying base 1
Intensity is 8.5MPa；
Base is bonded and sealed layer 2 using not viscous wheel emulsified bituminous materials, the solid content of the not viscous wheel emulsified bituminous materials
76%, standard path viscosity 25s, softening point are 79 DEG C, and 5 DEG C of ductilities are 49cm, and adhesive force pull strength is 1.5MPa；
Buffer layer 3 using 0.4% reinforcement of glass fibre volume AC-10 asphalt；
Crushed stone sealing 4 is 25% using rubble grain and the rubber asphalt for wrapping up in attached rubble grain, the rubber powder volume of rubber asphalt,
Rubber asphalt softening point is 85 DEG C, and 177 DEG C of Bu Shi viscosity 3.9pa.s, elasticity reverts to 87%, wraps up in attached ballast grain sizes in advance and is
5mm-10mm, rubber asphalt content are 0.5%；
Composite road surface layer 5 is made of mother asphalt mixture and grouting material, and the voidage of mother asphalt mixture is 25%, is stablized
Degree is 3.1KN, and loss late of dispersing is 27%；Grouting material is early-strength grouting material, and 3h compression strength is 12.8MPa, and the anti-folding of 3h is strong
Degree is 4.5MPa, fluidity 14s, isolation rate 1.4%, 60d volume change 0.2%.
A kind of maintenance process implementation of composite road surface structure mainly comprises the steps that
Composite pavement milling to road surface is carried into base 1, this milling depth is 12cm, and carries out cleaning dust removal process, it is ensured that
Road surface is completely without floating dust, and high glutinous emulsified asphalt under spread, spread quantity 0.6kg/m2；
The making of buffer layer 3 is bonded and sealed the upper surface making buffer layer 3 of layer 2 in base, under this AC-10 asphalt mixed soil
Surface layer placement thickness is 3cm, and compaction requirement reaches 100%, and road surface compacting is smooth；
4 spread roller-compaction of crushed stone sealing；Specially first spread 2.2kg/m2Rubber asphalt, then spread 17kg/m2Pre- wrap up in
Attached rubble grain, is rolled 3 times using heavy pneumatic-tired rollers, wraps up in attached rubble grain and rubber asphalt bonding jail after roller-compaction in advance
Gu；
The placement thickness of the making of composite road surface layer 5, mother asphalt mixture is 9cm, and mother asphalt mixture rolls mode
It is double steel wheel hydrostatic profiles 5 times, guarantees asphaltic road-mix surface course flatness, while can guarantees that road surface voidage is 21% again, it is full
The requirement of sufficient indoor design mother asphalt mixture voidage；Grouting construction is carried out later, using mortar vehicle device by grouting material
It is 0.29 with the ratio of mud of water, stirs, and carries out using pressure after the performance detections such as fluidity meet index request
Grouting material is uniformly sprayed in mother asphalt mixture by pump, keeps mother asphalt mixture perfusion full, is detected this mother
Body asphalt degree of filling average value is met the requirements 97%, and close traffic maintenance 2h composite pavement mixture forms superpower anti-
Treadway payment.
In order to examine the anti-rut behavior of the superpower Rut resistance composite road surface structure, after 2h intensity is formed, to former road surface
Coring is carried out, while using its Rut resistance effect of 60 DEG C of dynamic stability metrics evaluations of wheel tracking test, testing result shows the anti-vehicle
60 DEG C of rut road surface dynamic stability is up to 43772 times/mm, Rut resistance significant effect.
The pavement structure combines the advantages of flexible bituminous pavement and rigid concrete road surface, and what is be sequentially formed is complete
Whole Rut resistance pavement structure, non-deformability with super strength, anti-cracking ability, and also the construction time is short, and construction efficiency is high, by force
Degree forms fast, and road-ability is good, can reduce the period maintenance cost on road surface, is particularly suitable for that traffic pressure is big, track is sick
The serious highway section rapid curing construction of evil.
As it can be seen that using a kind of highway rapid curing method based on superpower Rut resistance composite road surface structure provided by the invention
Obtained superpower Rut resistance road surface is compared with other bituminous pavements, has excellent anti-rut behavior, envelope fast with gain in strength
It is short to close maintenance traffic time, big, the serious section of track disease the maintenance especially suitable for traffic pressure.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of composite road surface structure, which is characterized in that including successively molding road surface carrying base, base bond from top to bottom
Sealant, buffer layer, crushed stone sealing, composite road surface layer.
2. a kind of composite road surface structure according to claim 1, which is characterized in that the pressure resistance of road surface carrying base
Degree is greater than 6.0MPa.
3. a kind of composite road surface structure according to claim 1, which is characterized in that the base is bonded and sealed what layer used
Material is high glutinous emulsified asphalt or not viscous wheel emulsified asphalt；
The base be bonded and sealed layer material solid content be greater than 70%, normal viscosity 18-25s, softening point be greater than 70 DEG C, 5 DEG C
Ductility is greater than 40cm, and adhesive force pull strength is greater than 1.0MPa.
4. a kind of composite road surface structure according to claim 1, which is characterized in that the material that the buffer layer uses is to add
The asphalt of polyester fiber or glass fibre reinforcement is added；
The polyester fiber or glass fibre addition content are 0.3-0.4%.
5. a kind of composite road surface structure according to claim 1, which is characterized in that the crushed stone sealing include rubble grain and
The rubber asphalt of attached rubble grain is wrapped up in advance；
The rubber powder volume of the rubber asphalt is 20-25%；
The softening point of the rubber asphalt is not less than 75 DEG C；
177 DEG C of Bu Shi viscositys of the rubber asphalt are 3-4pa.s；
The elasticity of the rubber asphalt is restored to be greater than 80%；
The partial size of the rubble grain is 3-5mm or 5-10mm；
The content of the rubber asphalt is 0.4%-0.5%.
6. a kind of composite road surface structure according to claim 1, which is characterized in that the composite road surface layer includes parent drip
Green mixture and grouting material；
The mother asphalt mixture is skeleton gap structure, and voidage 20%-25%, stability is greater than 3KN, loss late of dispersing
Less than 30%；
The grouting material includes early-strength grouting material, and 3h compression strength is greater than 10MPa, and 3h flexural strength is greater than 2.5Mpa, stream
Dynamic degree is 12-16s, and the presetting period is less than 30min, and isolation rate is -0.10% ~+0.2% less than 5%, 60d volume change.
7. a kind of maintenance process of composite road surface structure, which is characterized in that the described method comprises the following steps:
It rests shield road-surface milling to road surface and carries base, the upper surface sprinkling base of carrying base is bonded and sealed on the road surface
Layer；
It is bonded and sealed the upper surface making buffer layer of layer in the base；
Crushed stone sealing spread roller-compaction: successively spread rubber asphalt and rubble grain, roll to obtain crushed stone sealing；
The making of composite road surface layer: making rolls mother asphalt mixture, and grouting material is sprayed in mother asphalt mixture.
8. a kind of maintenance process of composite road surface structure according to right 7, which is characterized in that the milling on the maintenance road surface
Depth is 7-12cm；
The base be bonded and sealed layer pitch sprinkling amount be 0.5-0.6kg/m2。
9. a kind of maintenance process of composite road surface structure according to right 7, which is characterized in that the making of the buffer layer is thick
Degree is 1.0-3.0cm, and compactness is greater than 99%.
10. a kind of maintenance process of composite road surface structure according to right 7, which is characterized in that the grouting material is sprayed to
Method in mother asphalt mixture includes:
Grouting material is stirred evenly with the ratio of mud of 0.28-0.32 by mortar vehicle device；
Grouting material is uniformly sprayed in mother asphalt mixture using pressure pump；
Examine mother asphalt mixture degree of filling at 90% or more, close traffic conserves 2-4h.
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| JPH08151603A (en) * | 1994-09-29 | 1996-06-11 | Bridgestone Corp | Draining pavement |
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| CN206902494U (en) * | 2017-03-21 | 2018-01-19 | 中咨公路养护检测技术有限公司 | A kind of compound noctilucent function layer paving structure |
| US20180371700A1 (en) * | 2016-06-14 | 2018-12-27 | Heritage Research Group | Binder composition for improved tack coat and stress absorbing membrane interlayer application for road construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08151603A (en) * | 1994-09-29 | 1996-06-11 | Bridgestone Corp | Draining pavement |
| CN102352593A (en) * | 2011-08-17 | 2012-02-15 | 华南理工大学 | Fiber-reinforced rubber asphalt stress absorbing layer and construction method thereof |
| CN103774518A (en) * | 2012-10-23 | 2014-05-07 | 江苏增光复合材料科技有限公司 | Fiber reinforced bituminous pavement stress absorbing layer and construction method thereof |
| CN103952958A (en) * | 2014-05-08 | 2014-07-30 | 苏州市市政工程设计院有限责任公司 | Method for rut maintaining and paving of municipal road |
| CN104652216A (en) * | 2015-02-09 | 2015-05-27 | 南京同安道路工程有限公司 | Water-discharging noise-lowering asphalt pavement structure of cement concrete bridge deck and laying process |
| US20180371700A1 (en) * | 2016-06-14 | 2018-12-27 | Heritage Research Group | Binder composition for improved tack coat and stress absorbing membrane interlayer application for road construction |
| CN106012739A (en) * | 2016-06-21 | 2016-10-12 | 中国十七冶集团有限公司 | Novel shock absorption pavement structure |
| CN206902494U (en) * | 2017-03-21 | 2018-01-19 | 中咨公路养护检测技术有限公司 | A kind of compound noctilucent function layer paving structure |
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