CN206784100U - A kind of bituminous paving interlayer structure - Google Patents
A kind of bituminous paving interlayer structure Download PDFInfo
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- CN206784100U CN206784100U CN201720366101.XU CN201720366101U CN206784100U CN 206784100 U CN206784100 U CN 206784100U CN 201720366101 U CN201720366101 U CN 201720366101U CN 206784100 U CN206784100 U CN 206784100U
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- asphalt
- layer
- rubber asphalt
- tack coat
- rubber
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Abstract
The utility model discloses a kind of bituminous paving interlayer structure, and it includes sub-layer, rubber asphalt tack coat and asphalt top layer successively from the bottom to top；The thickness on asphalt top layer is 4cm~5cm；Rubber asphalt tack coat includes：Rubber asphalt bottom, and the metalling being adhered on rubber asphalt bottom；The thickness of rubber asphalt tack coat is 0.5cm；The particle diameter of rubble is 13~16mm.Bituminous paving interlayer structure provided by the utility model has bond strength between layers high, and dense water is good, and anti-shear performance is excellent, delayed reflex crack, the advantages such as convenient and integrated cost of constructing is low.In the construction of the bituminous paving interlayer structure due to can uninterruptedly traffic construction or only short-term close traffic, so be not only applicable to the tack coat between newly-built road asphalt surface layer, and especially suitable for being applied in urban road asphalt surface course overhaul maintenance project.
Description
Technical field
Traffic exploratory techniques field is the utility model is related to, more particularly to a kind of bituminous paving interlayer structure.
Background technology
Asphalt pavement structure is the main pavement structure pattern of China Higher level highway, typically by asphalt surface course, basic unit, bottom
Basic unit, bed course composition.The high-grade highway such as highway, Class I highway, city expressway, trunk roads asphalt surface course is typically by three
Layer composition, is divided into superficial layer, intermediate layer and bottom surface layer, is the knot for directly bearing vehicular load repeated action and natural cause influence
Structure layer.Rule by pavement structural strength together with load stress with change in depth, asphalt surface course three-decker is respectively from difference
Asphalt mixture gradation so that whole asphalt surface course has preferable pavement performance.It is well known that compaction moulding at this stage
One kind that asphalt is typically all made up of stone matter coarse aggregate, bituminous cements, Machine-made Sand fine aggregate, miberal powder and residual porosities
The multinomial dispersion of spacial framework, its material properties are means of particulate material, and its intensity is formed from asphalt material
The inner frictional resistance of cohesive force and aggregate.To strengthen combining closely between road surface structare layer, pavement structure globality, Ying Cai are improved
Corresponding technical measures are taken, avoid producing interlayer slip.But when the making of each structure sheaf is completed from bottom to top, including
Soil matrix, bed course, basic unit, asphalt surface course are required for carrying out enough jolt ramming rolling, thus the surface of these structure sheafs all reaches
Opposed flattened dense state, so the frictional resistance on the link surface of each structure sheaf of pitch will be largely less than mixing
In itself, its intensity forms the dependence mostly switched to cohesive force to material.If realize layer without more high-quality material and construction
Between binder-treatment so that can have skill linking between each layer, interlayer composition surface will turn into the weak ring of whole road surface structare layer
Section.With the continuous development of national economy, the pressure of Road Transportation constantly increases, and also causes road surface interlayer cementing punishment to ask
Inscribe more acute.Passage is just very likely resulted in, is layered, gathers around the serious plant diseases such as bag, cracking if punishment is not in place, particularly in height
Warm season, this destructive power embody more prominent, so as to directly influence Road Service Life.
Priming oil is sprayed typically between asphalt surface course and semi-rigid type base or granular base course, priming oil infiltrates through base completely
Can pave asphalt surface course after layer, and this is the widespread consensus in the current road construction in China.Provided in technical specification abroad
Must spray adhesion coating pitch between each surface layer of pitch, China then require continuously to pave in specification it is not comtaminated save it is viscous
Layer, runs into pollution, sprays sticking layer oil after removing；Sticking layer oil typically selection splits soon or medium-setting emulsified asphalt, remodeling emulsified asphalt,
Fast, middle lime set body asphalt can be selected, general dosage is in 0.3~0.6L/m2.At present, it is general in high-grade highway Practical Project
Have all over way several：One kind is to use high osmosis modified emulsifying asphalt, and dosage is 1.0~1.2L/m2, sticking layer oil is by infiltration
The space on effect or filling sub-layer surface forms the permeability-thickness of certain depth, so, increases adhesion coating and sub-layer
Engagement force, and then increase asphalt surface course between cohesive force and shearing strength；Another method is using essence by milling machine
Milling mode make it that presentation regular veins are macroscopically smooth on existing pitch cutting optimal surface microscopic, so as to increase the table of sub-layer
Surface roughness and with the equivalent contact area of upper layer to improve bond quality.But all there is certain lack in both approaches
Falling into, first method needs additionally to use high osmosis modified emulsifying asphalt, increases material and construction cost, and in Practical Project
Sticking layer oil limited penetration depth, bond effect are undesirable, often occur serious road surface too early in some Heavy Traffic sections
Damage；Although second method can improve bond effect by improving surface roughness, milling is likely to result in sub-layer
Structural failure, influence the structural strength of sub-layer, and also needed to after milling carry out hand sweeping, cause human and material resources
Serious waste, while finish-milling plane efficiency of construction is not high, cost is higher, influences engineering holistic cost and efficiency of construction.Its other party
Method principle is similar, and sticking layer oil all has the construction of the diluent volatilization in emulsified asphalt demulsification, moisture evaporation, or cut-back asphalt
Journey, long construction period are the common faults of such sticking layer oil.And the heated bitumen used during the processing of China's early stage interlaminar bonding, due to construction
In be difficult to realize the control of amount, asphalt material can not meet in terms of cohesive force and temperature stability using will under hot conditions
Ask.Therefore, the material for interlaminar bonding processing must have good cohesive force under various temperature conditionss, can just play and carry
The effect of high bituminous paving globality and structural bearing capacity.
Based on above reason, need badly and develop a kind of excellent, economical and practical, convenient construction the novel asphalt road of adhesive property
Binding material between surface layer.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of bituminous paving interlayer structure
The utility model provides a kind of bituminous paving interlayer structure, and it includes sub-layer, rubber asphalt successively from the bottom to top
Tack coat and asphalt top layer；
The thickness on the asphalt top layer is 4cm~5cm；
The rubber asphalt tack coat includes：Rubber asphalt bottom, and the metalling being adhered on rubber asphalt bottom；
The thickness of the rubber asphalt tack coat is 0.5cm；
The particle diameter of the rubble is 13~16mm.
Further, the rubble is limestone gravel, its on rubber asphalt bottom spreading amount be completely spread 60%~
70%.
Relative to prior art, the bituminous paving interlayer structure of offer provided by the utility model, have the following advantages that：
(1) rubber asphalt tack coat, which is formed, strengthens interlaminar bonding：Rubber asphalt has good cementitiousness, and it can be with non-
Often firm absorption is bonded on sub-layer.When overlaying surface layer, rubber asphalt melts and bonded with surface layer again, while spills paving
Rubble can be embedded into overlay, increase interlayer frictional resistance, so as to avoid the generation of interlayer slip phenomenon, strengthen sub-layer
Acted on the interlaminar bonding of Laying Asphalt Surface Course.
(2) dense water is good：Rubber asphalt viscosity is big, and resistance capacity to deformation is strong, therefore in the interlaminar bonding for having waterproof demand
Layer in can increase rubber asphalt spread quantity, so as on road surface formed 4~5mm asphalt membrane, can prevent completely rainwater to
Lower infiltration, plays a protective role to roadbed.Secondly, paved above asphalt when, the rubber asphalt meeting at the top of tack coat
Secondary fusion, the gap of its surface layer mixture bottom can be sufficient filling with after pavement compaction, can so as to eliminate interlayer water
Can, play a part of preventing Water Damage.
(3) there is preferable anti-shear performance：Layer below pave with roller compaction process, due in bituminous concrete
Heat, which is gathered materials, to roll and push effect, when especially rolling temperature and being higher than its softening point, based on emulsified asphalt and modified emulsifying asphalt
The waterproof membrane of formation is most easily destroyed by similar.And the rubber asphalt tack coat in the utility model is due to firm in asphalt binder
Admittedly inlaying building stones, even if paving asphalt mixture surfacing, heat therein is gathered materials will not also larger damage to metalling.Moreover,
Building stones can combine closely with asphalt mixture surfacing, play more preferable bonding effect, each layer of asphalt pavement structure is formed an entirety,
So as to increase the shearing strength between asphalt surface course.
(4) delayed reflex crack：In rubber asphalt tack coat, the rubber asphalt of high dosage and the rubble of single particle size are strong
Power bonds, and forms the thick structure sheafs of about 0.5cm so that the concentrated stress redistribution at lower floor crack, largely reducing crack
Stress caused by place's relative displacement passes to surface layer, can effectively contain the reflection in crack, so as to the generation in delayed reflex crack.
(5) it is convenient to construct：The spread one machine operation that paves can be used during construction, a few road master operations can be simultaneously complete by unit
Into construction speed is fast, and construction technology is easy, is advantageous to carry out quick, safe construction under the conditions of open to traffic.
(6) integrated cost is low：Due to the bituminous paving construction technology without close traffic or can shorten traffic closing when
Between, therefore the expenses such as automobile usage charges, time delays and Traffic Accident Loss can be reduced, substantially reduce integrated cost.
(7) in the bituminous paving construction technology due to can uninterruptedly traffic construction or only short-term close traffic, so not only
Suitable for the tack coat between newly-built road asphalt surface layer, and especially suitable for urban road asphalt surface course overhaul maintenance project
Middle application.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram for the bituminous paving interlayer structure that the utility model embodiment provides；
Fig. 2 is the cross-sectional view for the bituminous paving interlayer structure that the utility model embodiment provides；
Fig. 3 is the structural representation of rubber asphalt tack coat in the bituminous paving interlayer structure that the utility model embodiment provides
Figure.
Description of reference numerals：
1- asphalts top layer
2- rubber asphalt tack coats
3- sub-layers
21- metallings
22- rubber asphalt bottoms
Embodiment
In order that those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
In a kind of specific embodiment, the utility model provides a kind of bituminous paving interlayer structure.Refer to Fig. 1
To Fig. 3, the interlayer structure of the bituminous paving provided the figure shows the utility model embodiment.
The bituminous paving interlayer structure that the utility model embodiment provides, it includes sub-layer 3, rubber successively from the bottom to top
Asphalt tack coat 2 and asphalt top layer 1；
The thickness on the asphalt top layer 1 is 4cm~5cm；
The rubber asphalt tack coat 2 includes：Rubber asphalt bottom 22, and be adhered to broken on rubber asphalt bottom 22
Rock layers 21；The thickness of the rubber asphalt tack coat 2 is 0.5cm；
The particle diameter of the rubble is 13~16mm.
Preferably, the rubble is limestone gravel, its on rubber asphalt bottom 22 spreading amount be completely spread 60%~
70%.
The above-mentioned bituminous paving interlayer structure that the utility model embodiment provides can be made by following construction method：
Step a, road pavement sub-layer is cleared up；
Step b, spread rubber asphalt
The rubber powder of 30~40 mesh was processed in the construction same day, then uses and paves spread one working rig spread in sub-layer
Surface, spread quantity are 2.0~2.4kg/m2；Spread temperature is 180~190 DEG C；During spread, the spread that paves one working rig
Remain a constant speed traveling, it is ensured that uniform spread；Rubber asphalt is no more than 24h from the time for being worked into spread；
Step c, crushed stone spreading
Rubble is sieved, washes and dries, obtains that particle diameter is single, dries dustless rubble；
By rubble and pitch with 0.3：100 weight ratio is stirred in advance；
Using paving, spread one working rig dispenses rubble；
Step d, roller-compaction
Rolled back and forth immediately following the spread one working rig roller-compaction that paves, heavy rubber tire pressure road using heavy pneumatic-tired rollers
1~2 time；Rubber asphalt tack coat is formed after drying.
Paved asphalt using the spread one working rig that paves.After drying, that is, form asphalt top layer.
Using the above-mentioned bituminous paving interlayer structure of offer provided by the utility model, have the following advantages that：
(1) rubber asphalt tack coat, which is formed, strengthens interlaminar bonding：Rubber asphalt has good cementitiousness, and it can be with non-
Often firm absorption is bonded on sub-layer.When overlaying surface layer, rubber asphalt melts and bonded with surface layer again, while spills paving
Rubble can be embedded into overlay, increase interlayer frictional resistance, so as to avoid the generation of interlayer slip phenomenon, strengthen sub-layer
Acted on the interlaminar bonding of Laying Asphalt Surface Course.
(2) dense water is good：Rubber asphalt viscosity is big, and resistance capacity to deformation is strong, therefore in the interlaminar bonding for having waterproof demand
Layer in can increase rubber asphalt spread quantity, so as on road surface formed 4~5mm asphalt membrane, can prevent completely rainwater to
Lower infiltration, plays a protective role to roadbed.Secondly, paved above asphalt when, the rubber asphalt meeting at the top of tack coat
Secondary fusion, the gap of its surface layer mixture bottom can be sufficient filling with after pavement compaction, can so as to eliminate interlayer water
Can, play a part of preventing Water Damage.
(3) there is preferable anti-shear performance：Layer below pave with roller compaction process, due in bituminous concrete
Heat, which is gathered materials, to roll and push effect, when especially rolling temperature and being higher than its softening point, based on emulsified asphalt and modified emulsifying asphalt
The waterproof membrane of formation is most easily destroyed by similar.And the rubber asphalt tack coat in the utility model is due to firm in asphalt binder
Admittedly inlaying building stones, even if paving asphalt mixture surfacing, heat therein is gathered materials will not also larger damage to metalling.Moreover,
Building stones can combine closely with asphalt mixture surfacing, play more preferable bonding effect, each layer of asphalt pavement structure is formed an entirety,
So as to increase the shearing strength between asphalt surface course.
(4) delayed reflex crack：In rubber asphalt tack coat, the rubber asphalt of high dosage and the rubble of single particle size are strong
Power bonds, and forms the thick structure sheafs of about 0.5cm so that the concentrated stress redistribution at lower floor crack, largely reducing crack
Stress caused by place's relative displacement passes to surface layer, can effectively contain the reflection in crack, so as to the generation in delayed reflex crack.
(5) it is convenient to construct：The spread one machine operation that paves can be used during construction, a few road master operations can be simultaneously complete by unit
Into construction speed is fast, and construction technology is easy, is advantageous to carry out quick, safe construction under the conditions of open to traffic.
(6) integrated cost is low：Due to the bituminous paving construction technology without close traffic or can shorten traffic closing when
Between, therefore the expenses such as automobile usage charges, time delays and Traffic Accident Loss can be reduced, substantially reduce integrated cost.
(7) in the bituminous paving construction technology due to can uninterruptedly traffic construction or only short-term close traffic, so not only
Suitable for the tack coat between newly-built road asphalt surface layer, and especially suitable for urban road asphalt surface course overhaul maintenance project
Middle application.
Bituminous paving interlayer construction method provided by the utility model is described with reference to specific embodiment.
1 rubber asphalt technical requirements
Spread preferably uses thicker rubber powder with rubber asphalt, such as：30~40 mesh.In order to ensure the steady of rubber asphalt quality
It is fixed, it is desirable to which that the same day processes, and same day spread, rubber asphalt is from spread is worked into typically no more than 24h.The base of processing rubber pitch
Matter pitch preferably uses No. 70 bi tumenf orr oads of A levels, and the outer volume of waste rubber tyre powder is 20~25%；Its quality should meet existing rule
The requirement of model.
2 construction technologies
To ensure the construction quality of rubber-asphalt waterproof tack coat, the cleaning work of sub-layer should be carried out, it is ensured that sub-layer
All kinds of diseases have been punished, and road surface is in clean, dry and coarse interface state；Carry out examination to spill, determine some critical constructions
Parameter, and using the mechanized construction troop of specialty.Basic construction technology process is as follows：Cleaning → preparation of construction of sub-layer →
Rubber asphalt spread → crushed stone spreading → roller-compaction.
The cleaning of 2.1 sub-layers
1) necessary punishment is carried out to the disease on original road surface, such as the reinforcement of pavement structure, the disease such as rut, check crack, fragmentation
Harm is controlled, crack closure etc..
2) conscientious cleaning should be carried out to job site before the construction of rubber-asphalt waterproof tack coat, it is ensured that sub-layer road surface
Keep clean, dry and coarse.
3) when former road surface damage ratio is more serious, should try one's best the influence for avoiding constructing to surrounding environment in cleaning, can adopt
With it is special possess watering, function of giving a dinner of welcome road sweeper, can also use watering cleaning if necessary, but should strictly control and treat road
After face is thoroughly dried, it can construct.
2.2 preparation of construction
1) spread of rubber asphalt should use it is special, can effectively control spread dosage, have heating, insulation and agitating function
Spread equipment.
2) spread equipment should be cleared up conscientiously before construction, should not have Residual oil in oil storage tank.
3) examination should be carried out before formal spread to spill, determine some critical construction parameters.Such as：Kilogram of every square metre of spreading rubble
The mechanical parameter etc. of number, the efficient combination of construction machinery, the reasonable temperature of pitch sprinkling, spread equipment.
4) wheel of relevant construction machinery, particularly pitch sprinkling car and crushed stone spreading car is strictly cleared up, is forbidden dirt
Contaminate section of being constructed on thing band.
The spread of 2.3 rubber asphalts
1) spread quantity of this rubber industry pitch is 2.0~2.4kg/m2。
2) during spread, distribution vehicle should remain a constant speed traveling, it is ensured that uniform spread.
3) the spread temperature of pitch is defined by ensureing that pitch is in the flowable sprinkling state of liquid, generally rubber
The spread temperature control of pitch is at 180~190 DEG C.
4) construction processing of joint should be focused on during rubber asphalt spread.
5) in construction period, in case of rained, spread under conditions of should fully being dried on sub-layer surface.
2.4 crushed stone spreading
1) rubble dispensed should be sieved, washed, and ensure that the single particle size of rubble, drying are dustless.Rubble should construct
Preceding carry out premixing, premixing asphalt content are 0.3%.
2) spreading amount at the main inclination angle for determining truck spreader hopper, speed and standard is spilt in the examination of rubble.This engineering is intended using
Limestone building stones, specification 16mm, the spreading amount of rubble generally completely spread 60%~70%, dosage is about 14kg/m2, examination spreads
Standard of the spreading kilogram number of every square metre of spread as engineering metering from now on is confirmed by owner, design, management tripartite afterwards.
3) timely spread rubble is answered after rubber asphalt is sprayed, so that pitch and the building stones dispensed can be bonded effectively.
2.5 roller-compaction
1) after crushed stone spreading, crushed stone spreading car roller-compaction, pneumatic-tired rollers should be closelyed follow with heavy pneumatic-tired rollers in time
Roll back and forth 1~2 time.
2) should arrange paving for superficial layer SMA asphalts after roller-compaction as early as possible, interval time no more than 24h,
Period answers temporary enclosed traffic, avoids the secondary pollution of gluing layer.
3 inspections of quality
Rubber asphalt tack coat is per 1000m2± 0.1kg/m is not to be exceeded in pitch sprinkling dosage of spot sampling check, error2,
Test method is referring to JTG E60-T0982.
The pitch interlayer structure ultimately formed is as shown in figure 1, wherein, the thickness on asphalt top layer is 5cm, and rubber drips
The thickness of blue or green tack coat is 0.5cm.
Bituminous paving interlayer structure provided by the utility model is described in detail above.Tool used herein
Body example is set forth to principle of the present utility model and embodiment, and the explanation of above example is only intended to help and understood
Method and its core concept of the present utility model.It should be pointed out that for those skilled in the art, do not taking off
On the premise of from the utility model principle, some improvement and modification can also be carried out to the utility model, these are improved and modification
Also fall into the protection domain of the utility model claims.
Claims (2)
1. a kind of bituminous paving interlayer structure, it is characterised in that it includes sub-layer, rubber asphalt tack coat successively from the bottom to top
With asphalt top layer；
The thickness on the asphalt top layer is 4cm~5cm；
The rubber asphalt tack coat includes：Rubber asphalt bottom, and the metalling being adhered on rubber asphalt bottom；It is described
The thickness of rubber asphalt tack coat is 0.5cm；
The particle diameter of the rubble is 13~16mm.
2. bituminous paving interlayer structure according to claim 1, it is characterised in that the rubble is limestone gravel, its
Spreading amount is 60%~70% completely spread on rubber asphalt bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366101.XU CN206784100U (en) | 2017-04-07 | 2017-04-07 | A kind of bituminous paving interlayer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366101.XU CN206784100U (en) | 2017-04-07 | 2017-04-07 | A kind of bituminous paving interlayer structure |
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| Publication Number | Publication Date |
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| CN206784100U true CN206784100U (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720366101.XU Expired - Fee Related CN206784100U (en) | 2017-04-07 | 2017-04-07 | A kind of bituminous paving interlayer structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059533A (en) * | 2017-04-07 | 2017-08-18 | 北京特希达交通勘察设计院有限公司 | A kind of bituminous paving interlayer structure |
| CN112211198A (en) * | 2020-11-10 | 2021-01-12 | 中建四局第五建筑工程有限公司 | Municipal road engineering pavement construction technology |
-
2017
- 2017-04-07 CN CN201720366101.XU patent/CN206784100U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059533A (en) * | 2017-04-07 | 2017-08-18 | 北京特希达交通勘察设计院有限公司 | A kind of bituminous paving interlayer structure |
| CN112211198A (en) * | 2020-11-10 | 2021-01-12 | 中建四局第五建筑工程有限公司 | Municipal road engineering pavement construction technology |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 Termination date: 20180407 |