CN107059533A - A kind of bituminous paving interlayer structure - Google Patents
A kind of bituminous paving interlayer structure Download PDFInfo
- Publication number
- CN107059533A CN107059533A CN201710224338.9A CN201710224338A CN107059533A CN 107059533 A CN107059533 A CN 107059533A CN 201710224338 A CN201710224338 A CN 201710224338A CN 107059533 A CN107059533 A CN 107059533A
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- asphalt
- layer
- rubber asphalt
- tack coat
- rubber
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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
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of bituminous paving interlayer structure, 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 sticked on rubber asphalt bottom；The thickness of rubber asphalt tack coat is 0.5cm；The particle diameter of rubble is 13~16mm.The bituminous paving interlayer structure that the present invention is provided has bond strength between layers high, and dense water is good, and anti-shear performance is excellent, delayed reflex crack, the low advantage of convenient and integrated cost of constructing.In the construction of the bituminous paving interlayer structure due to can uninterruptedly traffic construction or only short-term close traffic, so being not only applicable to the tack coat between newly-built road asphalt surface layer, and be particularly suitable for use in applying in urban road asphalt surface course overhaul maintenance project.
Description
Technical field
The present invention relates to traffic exploratory techniques field, 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 general 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.By pavement structural strength together with rule of the 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 constituted 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
Take corresponding technical measures, it is to avoid produce 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 constitutes the dependence mostly switched to cohesive force to material.If material and construction without more high-quality realize layer
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 continuing to develop for national economy, the pressure of Road Transportation constantly increases, and also causes road surface interlayer cementing punishment to ask
Topic is 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 embodies more prominent, so as to directly influence Road Service Life.
Priming oil is typically sprayed 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 of China.Provided in technical specification abroad
Adhesion coating pitch must be sprayed between each surface layer of pitch, China then requires continuously to pave in specification not comtaminated saves viscous
Layer, sticking layer oil is sprayed after running into pollution, removing；Sticking layer oil is typically selected to be split or medium-setting emulsified asphalt, remodeling emulsified asphalt soon,
Fast, middle lime set body asphalt is can select, general consumption is in 0.3~0.6L/m2.At present, it is general in high-grade highway Practical Project
Have several all over way：One kind is to use high osmosis modified emulsifying asphalt, and consumption 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
Fall into, first method needs extra use in high osmosis modified emulsifying asphalt, increase material and construction cost, and 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 sub-layer structural strength, 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, influence 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 is the common fault of such sticking layer oil.And the heated bitumen used during China's early stage interlaminar bonding processing, due to construction
In be difficult to realize the control of amount, asphalt material can not be met 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 that a kind of adhesive property is excellent, economical and practical, convenient construction novel asphalt road
Binding material between surface layer.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of bituminous paving interlayer structure
The present invention provides a kind of bituminous paving interlayer structure, and it includes sub-layer, rubber asphalt and bonded successively from the bottom to top
Layer 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 sticked 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 be limestone gravel, its on rubber asphalt bottom spreading amount be completely spread 60%~
70%.
The bituminous paving interlayer structure of the offer provided relative to prior art, the present invention, has the following advantages that：
(1) interlaminar bonding is strengthened in rubber asphalt tack coat formation：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 spilling 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 that 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, can be sufficient filling with the gap of its surface layer mixture bottom after pavement compaction, so that eliminate interlayer water can
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 higher than its softening point, based on emulsified asphalt and modified emulsifying asphalt
The waterproof membrane of formation is most easily by similar destruction.And the rubber asphalt tack coat in the present invention in asphalt binder due to firmly inlaying
Embedding building stones, even if paving asphalt mixture surfacing, heat therein is gathered materials will not also larger damage to metalling.Moreover, building stones
It can be combined closely with asphalt mixture surfacing, play and more preferably bond effect, make asphalt pavement structure one entirety of each layer formation, so that
Increase the shearing strength between asphalt surface course.
(4) delayed reflex crack：In rubber asphalt tack coat, the rubber asphalt of high consumption and the rubble of single particle size are strong
Power is bonded, and forms the thick structure sheafs of about 0.5cm so that the concentrated stress redistribution at lower floor crack, largely reducing crack
The stress that place's relative displacement is produced passes to surface layer, can effectively contain the reflection in crack, so that the generation in delayed reflex crack.
(5) it is convenient to construct：The spread that paves integral machine operation 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 conducive to carrying 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 it is particularly suitable for use in urban road asphalt surface course overhaul maintenance project
Middle application.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of bituminous paving interlayer structure provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of bituminous paving interlayer structure provided in an embodiment of the present invention；
Fig. 3 is the structural representation of rubber asphalt tack coat in bituminous paving interlayer structure provided in an embodiment of the present invention.
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 present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
In a kind of specific embodiment, the invention provides a kind of bituminous paving interlayer structure.Fig. 1 is referred to figure
3, the figure shows the interlayer structure of bituminous paving provided in an embodiment of the present invention.
Bituminous paving interlayer structure provided in an embodiment of the present invention, it includes sub-layer 3, rubber asphalt successively from the bottom to top
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 stick 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.
It is preferred that, the rubble be limestone gravel, its on rubber asphalt bottom 22 spreading amount be completely spread 60%~
70%.
Above-mentioned bituminous paving interlayer structure provided in an embodiment of the present invention can be made by following construction method：
Step a, road pavement sub-layer are cleared up；
Step b, spread rubber asphalt
The rubber powder of 30~40 mesh was processed in the construction same day, then using the integral working rig spread of the spread that paves in sub-layer
Surface, spread quantity is 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, dustless rubble is dried；
By rubble and pitch with 0.3：100 weight ratio is stirred in advance；
Rubble is dispensed using the integral working rig of the spread that paves；
Step d, roller-compaction
Using heavy pneumatic-tired rollers immediately following the integral working rig roller-compaction of the spread that paves, heavy rubber tire pressure road is rolled back and forth
1~2 time；Rubber asphalt tack coat is formed after drying.
Paved asphalt using the integral working rig of the spread that paves.After drying, that is, form asphalt top layer.
The above-mentioned bituminous paving interlayer structure of the offer provided using the present invention, is had the following advantages that：
(1) interlaminar bonding is strengthened in rubber asphalt tack coat formation：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 spilling 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 that 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, can be sufficient filling with the gap of its surface layer mixture bottom after pavement compaction, so that eliminate interlayer water can
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 higher than its softening point, based on emulsified asphalt and modified emulsifying asphalt
The waterproof membrane of formation is most easily by similar destruction.And the rubber asphalt tack coat in the present invention in asphalt binder due to firmly inlaying
Embedding building stones, even if paving asphalt mixture surfacing, heat therein is gathered materials will not also larger damage to metalling.Moreover, building stones
It can be combined closely with asphalt mixture surfacing, play and more preferably bond effect, make asphalt pavement structure one entirety of each layer formation, so that
Increase the shearing strength between asphalt surface course.
(4) delayed reflex crack：In rubber asphalt tack coat, the rubber asphalt of high consumption and the rubble of single particle size are strong
Power is bonded, and forms the thick structure sheafs of about 0.5cm so that the concentrated stress redistribution at lower floor crack, largely reducing crack
The stress that place's relative displacement is produced passes to surface layer, can effectively contain the reflection in crack, so that the generation in delayed reflex crack.
(5) it is convenient to construct：The spread that paves integral machine operation 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 conducive to carrying 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 it is particularly suitable for use in urban road asphalt surface course overhaul maintenance project
Middle application.
The bituminous paving interlayer construction method provided with reference to specific embodiment the present invention is described.
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
Fixed, it is desirable to which that the same day processes, same day spread, rubber asphalt is general no more than 24h from spread is worked into.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, the reinforcement of such as 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, if necessary also can be using watering cleaning, but should strictly control to treat road
After face is thoroughly dried, it can construct.
2.2 preparation of construction
1) spread of rubber asphalt should using it is special, can effectively control spread dosage, with 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, some critical construction parameters are determined.Such as：Kilogram of every square metre of spreading rubble
Number, the efficient combination of construction machinery, the reasonable temperature of pitch sprinkling, the mechanical parameter of spread equipment etc..
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 to be to ensure that pitch is defined 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, it is ensured that the single particle size of rubble, drying are dustless.Rubble should be in construction
Preceding carry out premixing, premixing asphalt content is 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 is 16mm, and the spreading amount of rubble is generally the 60%~70% of full paving, and consumption is about 14kg/m2, examination spreads
The spreading kilogram number for confirming every square metre of spread by owner, design, management tripartite afterwards is used as the standard of engineering metering from now on.
3) timely spread rubble is answered after sprinkling rubber asphalt, so that the building stones of pitch and spreading 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) paving for superficial layer SMA asphalts should be arranged after roller-compaction as early as possible, interval time no more than 24h,
Period answers temporary enclosed traffic, it is to avoid 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 consumption 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, rubber drip
The thickness of blue or green tack coat is 0.5cm.
Bituminous paving interlayer structure provided by the present invention is described in detail above.It is used herein specifically individual
Example is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help to understand the present invention's
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
On the premise of, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the claims in the present invention
Protection domain in.
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 sticked 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 |
|---|---|---|---|
| CN201710224338.9A CN107059533A (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 |
|---|---|---|---|
| CN201710224338.9A CN107059533A (en) | 2017-04-07 | 2017-04-07 | A kind of bituminous paving interlayer structure |
Publications (1)
| Publication Number | Publication Date |
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| CN107059533A true CN107059533A (en) | 2017-08-18 |
Family
ID=59602171
Family Applications (1)
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| CN201710224338.9A Pending CN107059533A (en) | 2017-04-07 | 2017-04-07 | A kind of bituminous paving interlayer structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584985A (en) * | 2021-08-04 | 2021-11-02 | 黄鹏宇 | Embedded and extruded structural layer for asphalt pavement |
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| CN206784100U (en) * | 2017-04-07 | 2017-12-22 | 北京特希达交通勘察设计院有限公司 | A kind of bituminous paving interlayer structure |
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| CN101597878A (en) * | 2009-06-26 | 2009-12-09 | 华南理工大学 | A kind of combined type paving structure and paving method thereof |
| CN101982610A (en) * | 2010-11-04 | 2011-03-02 | 北京市公路桥梁建设集团有限公司 | Hot-distribution rubber bituminous pavement and construction method thereof |
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| CN202247580U (en) * | 2011-09-19 | 2012-05-30 | 华南理工大学 | Asphalt pavement precast block |
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| CN113584985A (en) * | 2021-08-04 | 2021-11-02 | 黄鹏宇 | Embedded and extruded structural layer for asphalt pavement |
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