CN110258236A - A kind of high-performance steel slag road surface and its construction method - Google Patents
A kind of high-performance steel slag road surface and its construction method Download PDFInfo
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- CN110258236A CN110258236A CN201910563603.5A CN201910563603A CN110258236A CN 110258236 A CN110258236 A CN 110258236A CN 201910563603 A CN201910563603 A CN 201910563603A CN 110258236 A CN110258236 A CN 110258236A
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- asphalt concrete
- concrete layer
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- steel slag
- stabilized macadam
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 54
- 239000010959 steel Substances 0.000 title claims abstract description 54
- 239000002893 slag Substances 0.000 title claims abstract description 48
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 91
- 239000004568 cement Substances 0.000 claims abstract description 68
- 239000010426 asphalt Substances 0.000 claims abstract description 39
- 230000037452 priming Effects 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 27
- 239000004567 concrete Substances 0.000 claims description 25
- 238000000465 moulding Methods 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000005056 compaction Methods 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 7
- 238000009490 roller compaction Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 97
- 235000019198 oils Nutrition 0.000 description 32
- 238000012360 testing method Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- 230000032258 transport Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000003825 pressing Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000002955 isolation Methods 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
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- 238000005507 spraying Methods 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
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- 230000007935 neutral effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- 235000011613 Pinus brutia Nutrition 0.000 description 2
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
-
- 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
- E01C7/182—Aggregate or filler materials, except those according to E01C7/26
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of high-performance steel slag road surfaces, including being put into AC-13C asphalt concrete layer with a thickness of 3~4cm, it goes to a grassroots level with a thickness of the AC-16C asphalt concrete layer of 4~7cm with a thickness of base on the cement stabilized macadam of 15~20cm with a thickness of the cement stabilized macadam of 15~20cm；Sticking layer oil is equipped between AC-13C asphalt concrete layer and the AC-16C asphalt concrete layer；Priming oil is equipped on AC-16C asphalt concrete layer and the cement stabilized macadam between base；A kind of construction method on high-performance steel slag road surface, paved base site prepare, asphalt mixing, transport paves, roller-compaction, joint treatment open to traffic, structural strength is high in the present invention, wear-resisting, noise reduction, finished product is regular, pitch package adhesion is good, and Road Service Life is long.
Description
Technical field
The present invention relates to highway layout technical field of construction, specially a kind of high-performance steel slag road surface and its construction method.
Background technique
Currently, road construction develops rapidly, and the abbreviation of white pavement i.e. cement concrete pavement before, white road
The cement concrete pavement that face has cement concrete roadbed and is laid on the cement concrete roadbed；This white pavement exists
Have the following problems in use process: 1. laying way of escape surface elastics are poor, are easily damaged；2. markings are mixed on road surface after being laid with
Visual effect is poor, Yi Yinqi visual fatigue；3. road surface is poor to light absorption, generate it is reflective cause people to feel to dazzle the eyes, from
And easily cause traffic accident.
Although existing limestone asphalt concrete pavement has greatly improved relative to white pavement tool, still deposit
In problem once, long-life use is still not achieved in intensity, and wear-resisting type is poor, and automobile is still very big in road traveling noise, and
And in the construction process, finished product corner angle are more, and pitch package adhesion is poor, mutability.
Thus it need need to develop that a kind of high intensity, wear-resisting, noise reduction, finished product be regular, pitch package adhesion is good at present
High-performance steel slag road surface and its construction method overcome drawbacks described above.
Summary of the invention
In view of this, a kind of the present invention provides intensity high, wear-resisting, noise reduction, finished product are regular, pitch package adhesion is good
High-performance steel slag road surface and its construction method.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of high-performance steel slag road surface, including AC-13C
Asphalt concrete layer, AC-16C asphalt concrete layer, base on cement stabilized macadam, cement stabilized macadam are gone to a grassroots level,
The AC-13C asphalt concrete layer is with a thickness of 3~4cm；
The AC-16C asphalt concrete layer is with a thickness of 4~7cm；
Groundwork thickness is 15~20cm on the cement stabilized macadam；
The cement stabilized macadam is gone to a grassroots level with a thickness of 15~20cm；
Sticking layer oil is equipped between the AC-13C asphalt concrete layer and the AC-16C asphalt concrete layer；
Priming oil is equipped on the AC-16C asphalt concrete layer and the cement stabilized macadam between base.
The present invention using four layers laying cement stabilized macadams go to a grassroots level, base, the AC- on the cement stabilized macadam
16C asphalt concrete layer, the AC-13C asphalt concrete layer, so that pavement structure is not only sturdy and durable, and each interlayer connects
Closely, cement stabilized macadam is gone to a grassroots level, as base, bearing capacity is big for base on the cement stabilized macadam, reduces road surface
The influence born a heavy burden to base, that is, improve the durability on road surface, improve service life.
The AC-16C asphalt concrete layer, the AC-13C asphalt concrete layer have certain bullet as surface layer itself
Property and ductility, can resist that road surface is certain to expand with heat and contract with cold, and shearing force caused by road pavement in being formed, thereby reduce
The generation of pavement crack improves the service life on road surface.Four-layer structure intensity in the present invention is high, wear-resisting, noise reduction, finished product rule
It is good that whole, pitch wraps up adhesion.
Further, the AC-13C asphalt concrete layer or the AC-16C asphalt concrete layer (2) are thick by steel slag
Fine aggregate and asphalt 100:(5~5.3) it mixes；
It is 10~15mm that the steel slag thickness, which is gathered materials including specification, the steel slag coarse aggregate of 5~10mm and specification be 0~
5mm slag thin aggregate；
The asphalt includes 70A matrix pitch and SBS modified pitch.
Further, 70A matrix pitch and SBS modified pitch ratio are 7:3, institute in the AC-16C asphalt concrete layer
Stating 70A matrix pitch and SBS modified pitch ratio in AC-13C asphalt concrete layer is 6:4.
Further, on the cement stabilized macadam base and the cement stabilized macadam go to a grassroots level (4) be cement
Stone concrete structure.
Further, the sticking layer oil is with a thickness of 0.5~3mm, and the priming oil is with a thickness of 0.5~3mm.
A kind of construction method on high-performance steel slag road surface, comprising the following steps:
1) pre- laying road arranges, and is compacted using street roller, then road pavement is cleared up；
2) it is laid with cement stabilized macadam to go to a grassroots level, after cement stabilized macadam is gone to a grassroots level and consolidated, is laid with cement stabilized macadam
Upper base, and 6-10 days maintenance of surface are carried out to base on cement stabilized macadam；
3) before making asphalt concrete layer, the quality of base is checked, it is desirable that dense surface must not have discrete particles, mud
Native sundries cleans up before construction, sprays sticking layer oil；
4) AC-16C asphalt concrete layer transport is laid with, and AC-16C asphalt concrete layer is transported to paving site≤0.5h, is spread
If temperature >=135 DEG C, at the uniform velocity it is laid with using paver, bituminous concrete is paved after molding, steamroller is adopted, to ensure
Compacting temperature and compaction quality, spray oil reservoir；
5) AC-13C asphalt concrete layer transport is laid with, AC-13C asphalt concrete layer be transported to paving site≤
0.5h is laid with temperature >=135 DEG C, is at the uniform velocity laid with using paver, bituminous concrete is paved after molding, is ground using road roller
Pressure, to ensure compacting temperature and compaction quality；
6) asphalt concrete pavement waits for open after the complete natural cooling in making section, mix surface temperature are lower than 50 DEG C
Traffic is put, open to traffic rear vehicle travel speed should control within 30km/h.
Further, the sprinkling sticking layer oil and sprayed using bituminous distributor when saturating oil reservoir, spray line preferably with road surface
28 °~32 ° angles are formed, and have 8-15cm height, so that the sticking layer oil sprayed on road surface forms overlapping shape.
Further, paver speed is V=(100 × Q × C) ÷ (60D × W × T) in the step 4)
In formula: V--- paver speed (m/min)
The density (t/m3) of asphalt after E--- compaction moulding
Q--- mixer yield (t/h)
W--- paving width (m)
Average thickness (cm) after T---- paving layer compaction moulding
C---- efficiency factor, efficiency factor value are 0.8-0.95.
Further, outside-in rolls when the road roller rolls, and bend, to roll from inside to outside, is rolled by eminence
When, two-wheeled arranged side by side is overlapped 35-45cm, when rolling, mustn't reverse end for end on the mixture newly spread and hardness turns to and brake suddenly
It is pressed on the asphalt concrete pavement higher than 70 DEG C with 3min is greater than.
Further, the AC-13C asphalt concrete layer is with a thickness of 3~4cm；The AC-16C bituminous concrete thickness
Degree is 4~7cm；Groundwork thickness is 15~20cm on the cement stabilized macadam；The cement stabilized macadam go to a grassroots level with a thickness of
15~20cm；The sticking layer oil is with a thickness of 0.5~3mm, and the priming oil is with a thickness of 0.5~3mm.
The height at middle part of the invention is greater than the height of concrete layer two sides, to increase base on cement stabilized macadam
The contact area that layer, cement stabilized macadam are gone to a grassroots level with AC-13C asphalt concrete layer, AC-16C asphalt concrete layer, to make
Water penetrates into base on cement stabilized macadam, cement stabilizing from AC-13C asphalt concrete layer, AC-16C asphalt concrete layer
During rubble is gone to a grassroots level, consequently facilitating being permeated to water, consequently facilitating the water in road pavement is drained, to reduce the product on road surface
Water, consequently facilitating vehicle pass-through；
And the application uses novel steel slag concrete structure, AC-13C asphalt concrete layer, AC-16C pitch coagulation
Soil layer is all made of to be gathered materials and asphalt 100:(5~5.3 by steel slag thickness) it mixes；
It is 10~15mm that the steel slag thickness, which is gathered materials including specification, the steel slag coarse aggregate of 5~10mm and specification be 0~
5mm slag thin aggregate；
The asphalt includes 70A matrix pitch and SBS modified pitch.
70A matrix pitch and SBS modified pitch ratio are 7:3, the AC-13C in the AC-16C asphalt concrete layer
70A matrix pitch and SBS modified pitch ratio are 6:4 in asphalt concrete layer.
Such road surface compared to the prior art in pavement strength is higher, wear-resisting, noise reduction, finished product is regular, pitch package is attached
Property it is good.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is high-performance steel slag pavement structure schematic diagram of the present invention；
Fig. 2 is construction method flow chart of the present invention.
In figure: 1 is AC-13C asphalt concrete layer；2 be AC-16C asphalt concrete layer；3 be base on cement stabilized macadam
Layer；4 go to a grassroots level for cement stabilized macadam.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, a kind of high-performance steel slag road surface, including AC-13C asphalt concrete layer 1, AC-16C pitch coagulation
Soil layer 2, base 3 on cement stabilized macadam, cement stabilized macadam go to a grassroots level 4,
In the present embodiment, AC-13C asphalt concrete layer 1 is with a thickness of 3~4cm；
In further embodiments, AC-13C asphalt concrete layer 1 is with a thickness of 3~4cm；
In the present embodiment, AC-16C asphalt concrete layer 2 is with a thickness of 6cm；
In further embodiments, AC-16C asphalt concrete layer 2 is with a thickness of 6cm；
In the present embodiment, base 3 is on cement stabilized macadam with a thickness of 15cm；
In further embodiments, on cement stabilized macadam base 3 with a thickness of 15~20cm；
In the present embodiment, cement stabilized macadam goes to a grassroots level 4 with a thickness of 15cm；
In further embodiments, cement stabilized macadam goes to a grassroots level 4 with a thickness of 15~20cm；
Sticking layer oil is equipped between AC-13C asphalt concrete layer 1 and AC-16C asphalt concrete layer 2；
Priming oil is equipped on AC-16C asphalt concrete layer 2 and cement stabilized macadam between base 3.
The present invention is gone to a grassroots level base 3 on 4, cement stabilized macadam, AC-16C drip using the cement stabilized macadams of four layers of laying
Green concrete layer 2, AC-13C asphalt concrete layer 1, so that pavement structure is not only sturdy and durable, and each interlayer is completely embedded, water
Cement-stabilizing broken stone is gone to a grassroots level, and as base, bearing capacity is big for base 3 on 4, cement stabilized macadam, reduces road surface weight bearing to base
Influence, that is, improve the durability on road surface, improve service life.
AC-16C asphalt concrete layer 2, AC-13C asphalt concrete layer 1 have certain elasticity as surface layer itself and prolong
Malleability, can resist that road surface is certain to expand with heat and contract with cold, and shearing force caused by road pavement in being formed, and thereby reduce road surface and split
The generation of seam improves the service life on road surface.Four-layer structure intensity in the present invention is high, wear-resisting, noise reduction, finished product are regular, drip
Blueness package adhesion is good.
Further, AC-13C asphalt concrete layer 1 or AC-16C asphalt concrete layer 2 are gathered materials and are dripped by steel slag thickness
Green mixture 100:5~5.3 mix；
It is 10~15mm that steel slag thickness, which is gathered materials including specification, the steel slag coarse aggregate of 5~10mm and specification are 0~5mm steel
Slag fine aggregate；
Coarse aggregate
Coarse aggregate is 10~15mm of steel slag, 5~10mm, and pilot project and test result see the table below.
Coarse aggregate technological property
Fine aggregate
Fine aggregate is 0~5mm of steel slag, and pilot project and test result see the table below.
Fine aggregate technological property
Survey effective relative density of steel slag and whose meeting formate gradation composition mine material mixture, examination respectively according to pitch dipping method
Testing the time is respectively 1.5h and 3h, and test result see the table below.
Steel slag synthetic aggravation effective density
Limestone synthetic aggravation effective density
There is the relative density of AC-13C asphalt concrete layer 1 or AC-16C asphalt concrete layer 2 known to upper table much higher than stone
Limestone synthetic aggravation effective density, and then be that the application intensity is higher, wear-resisting.
Asphalt includes 70A matrix pitch and SBS modified pitch.
In the present embodiment, 70A matrix pitch and SBS modified pitch ratio are 7:3, AC- in AC-16C asphalt concrete layer 2
70A matrix pitch and SBS modified pitch ratio are 6:4 in 13C asphalt concrete layer 1.
It 4 is cement stone coagulation that base 3 and cement stabilized macadam, which are gone to a grassroots level, on cement stabilized macadam in the present embodiment
Soil structure.
In the present embodiment, sticking layer oil is with a thickness of 2mm, and priming oil is with a thickness of 2mm.
Sticking layer oil is in further embodiments with a thickness of 0.5~3mm, and priming oil is with a thickness of 0.5~3mm.
A kind of construction method on high-performance steel slag road surface, comprising the following steps:
1) pre- laying road arranges, and is compacted using street roller, then road pavement is cleared up；
2) be laid with cement stabilized macadam and go to a grassroots level 4, after cement stabilized macadam go to a grassroots level 4 it is firm after, it is broken to be laid with cement stabilizing
Shi Shang base 3, and 6-10 days maintenance of surface are carried out to base 3 on cement stabilized macadam；
3) before making asphalt concrete layer, the quality of base is checked, it is desirable that dense surface must not have discrete particles, mud
Native sundries cleans up before construction, sprays sticking layer oil；
4) transport of AC-16C asphalt concrete layer 2 is laid with, and AC-16C asphalt concrete layer 2 is transported to paving site≤0.5h,
Temperature >=135 DEG C are laid with, are at the uniform velocity laid with using paver, bituminous concrete is paved after molding, steamroller is adopted, with true
Compacting temperature and compaction quality are protected, oil reservoir is sprayed；
5) transport of AC-13C asphalt concrete layer 1 is laid with, and AC-13C asphalt concrete layer 1 is transported to paving site≤0.5h,
Temperature >=135 DEG C are laid with, are at the uniform velocity laid with using paver, bituminous concrete is paved after molding, steamroller is adopted, with true
Protect compacting temperature and compaction quality；
6) asphalt concrete pavement waits for open after the complete natural cooling in making section, mix surface temperature are lower than 50 DEG C
Traffic is put, open to traffic rear vehicle travel speed should control within 30km/h.
Further, it is sprayed when spraying sticking layer oil and saturating oil reservoir using bituminous distributor, spray line is preferably formed with road surface
28 °~32 ° angles, and have 8-15cm height, so that the sticking layer oil sprayed on road surface forms overlapping shape.
Further, paver speed is V=100 × Q × C ÷ 60D × W × T in step 4
In formula: V--- paver speed m/min
The density t/m3 of asphalt after F--- compaction moulding
Q--- mixer yield t/h
W--- paving width m
Average thickness cm after T---- paving layer compaction moulding
C---- efficiency factor, efficiency factor value are 0.8-0.95.
Further, outside-in rolls when road roller rolls, bend by eminence to roll from inside to outside, when rolling,
Two-wheeled arranged side by side is overlapped 35-45cm, when rolling, mustn't reverse end for end on the mixture newly spread and hardness turns to and brake suddenly and greatly
It is pressed on the asphalt concrete pavement higher than 70 DEG C in 3min.
Further, AC-13C asphalt concrete layer 1 is with a thickness of 3~4cm；AC-16C asphalt concrete layer 2 with a thickness of 4~
7cm；Base 3 is on cement stabilized macadam with a thickness of 15~20cm；Cement stabilized macadam goes to a grassroots level 4 with a thickness of 15~20cm；Adhesion coating
Oil is with a thickness of 0.5~3mm, and priming oil is with a thickness of 0.5~3mm.
The height at middle part of the invention is greater than the height of concrete layer two sides, to increase base on cement stabilized macadam
3, cement stabilized macadam go to a grassroots level 4 with AC-13C asphalt concrete layer 1, AC-16C asphalt concrete layer 2 contact area, thus
Water is set to penetrate into base 3, cement on cement stabilized macadam from AC-13C asphalt concrete layer 1, AC-16C asphalt concrete layer 2
Stabilization gravel is gone to a grassroots level in 4, consequently facilitating permeating to water, consequently facilitating the water in road pavement is drained, to reduce road surface
On ponding, consequently facilitating vehicle pass-through；
And the application uses novel steel slag concrete structure, AC-13C asphalt concrete layer 1, AC-16C pitch coagulation
Soil layer 2 is all made of to be gathered materials by steel slag thickness and mix with asphalt 100:5~5.3；
It is 10~15mm that steel slag thickness, which is gathered materials including specification, the steel slag coarse aggregate of 5~10mm and specification are 0~5mm steel
Slag fine aggregate；
Asphalt includes 70A matrix pitch and SBS modified pitch.
70A matrix pitch and SBS modified pitch ratio are 7:3, AC-13C pitch coagulation in AC-16C asphalt concrete layer 2
70A matrix pitch and SBS modified pitch ratio are 6:4 in soil layer 1.
Such road surface compared to the prior art in pavement strength is higher, wear-resisting, noise reduction, finished product is regular, pitch package is attached
Property it is good.
Construction method in specific the present embodiment are as follows:
1, construction process
Paved base site prepares, and asphalt mixing, transport paves, roller-compaction, joint treatment open to traffic.
2, preparation of construction works
Before making asphalt, the quality of surface layer is checked.It is required that dense surface, must not have discrete particles, soil miscellaneous
Object etc., cleans up before construction, and the place sprinkling sticking layer oil cleaned up by prescribed requirement, uses pitch when spraying sticking layer oil
Spreading machine sprinkling, spray line preferably forms about 30 ° of angles with road surface, and has height appropriate, so that the sticking layer oil shape sprayed on road surface
At overlapping.
Cleaning overlays bituminous concrete section, carries out covering protection to the component for being afraid of pollution along the line, removes all loose
Material, clast etc..Sprinkling uniformly, if any omission manually must mend and spill, after the rain when base's humidity, not spray priming oil, such as part
When spraying more, manually removed.After spraying priming oil on sub-surface, mustn't any vehicle and pedestrian pass through, until pitch
Penetrate into base.
Asphalt testing result
Modified pitch testing result
3, surveying and locating
Restore middle line, every 10 meters of sections pull out skirt piles, and measurement needs accurately, and every 10 meters of reference line are set up a column, and column steel is fine
It squeezes into inside upper layer, it is ensured that securely, must not loosen.After the completion of reference line suspension, reference line is checked by special messenger,
Reference line check at any time in work progress.The thickness and absolute altitude of upper layer bitumen concrete are controlled with equalizer bar, should be true when construction
The speed of travel for protecting paver equalizer bar is uniform.
4, asphalt mixing
Asphalt mixes hot paving technique using concentration plantmix, heat and mixes and stirs energy using intermittent asphalt mixture blending station
Power is 500t/h, is operated by professional, and is furnished with laboratory.A variety of materials are chosen and can be marched into the arena after pass the test,
It is stored by kind, specification.During mixing and stirring, the dosage of pitch and various mineral aggregates is printed by disk and mixes and stirs temperature.
Pitch uses heat-conducting oil heating, and the mixing time of asphalt is with mixture uniform mixing (without grey material, without knot
Group is blocking, isolates without obvious thickness material) it is advisable, mineral aggregate particle is all wrapped by pitch uniformly to spend, and every pot of mixing time is preferably controlled
System must not use, and adjust in time between 30-50s (wherein the dry mixing time is no less than 5s) when not being inconsistent requirement.The pitch mixed
Making immediately is directly unloaded to dumper, and paving for mixture is carried out in paving material requirement meeting.
5, asphalt transports
The transport of asphalt should weigh by vehicle, measure factory's temperature by car test again and sign and issue triplicate haul
Single (portion deposits batching plant, and portion hands over paving site, and portion hands over driver).
(1) haulage vehicle all uses self-unloading transport cart.Before filling asphalt, first compartment is cleaned up,
Simultaneously to prevent pitch and compartment board from bonding, car side board and bottom plate are brushed with grease (oil-water ratio 1:3) mixed liquor, and
The extraction raffinate for accumulating in car bottom is removed with mop.When mixer discharge bucket is to dumper blowing, often putting a defective material should be moved
Make a movement automobile position, and successively the sequence before, during and after loads automobile when charging, is gathered materials isolation with reducing thickness.Mixture
Timely test temperature after entrucking, such as phenomenon too high or too low for temperature are discarded.Compartment (is protected using tarpaulin covering during haul
It is temperature, rain-proof, anti-pollution), dumper travel speed should control within 30KM/h.Bitumen concrete is transported to the voucher that paves and receives, and
Quality is mixed and stirred in inspection, do not meet specification temperature requirement or formed block, the temperature that drenched with rain mixture must not making in road
On.
(2) when starting to pave, construction site should have 5 or more time dummy cars.In discharge process, dumper is in paver
It is stopped at preceding 10-30cm, must not hit paver, when discharging should quickly, and wide-angle is dug, and dumper should hang neutral gear, by paving
Machine, which pushes, to advance.
(3) paving site is transported to no more than 0.5h, guarantees that asphalt is not less than 145 DEG C of bitumen concretes to construction site
Factory should sign and issue haul list, temperature, haulage vehicle number, the time of making the product when indicating factory.
6, bituminous mixture laying
Mixture laying is constructed using 2 paver half ranges molding construction method that paves.According to design horizontal slope and
Pine paving requires to adjust paving thickness and horizontal slope, it is ensured that upper layer paving thickness and elevation meet code requirement.Using equalizer bar
It is controlled, the uniform of the speed of travel of paver and equalizer bar is kept when construction.In order to guarantee screed preliminary consolidation effect,
First is taken to screed preheating half an hour before paving, to guarantee the uniformity and screed preliminary consolidation effect of preheating.Dumper
Neutral gear is parked at 20~30cm before paver, is pushed and is advanced by paver, in paving process, the discharging when paving is unsnatched
Transport vehicle is left away after material, and for another transport vehicle followed by discharging, paver keeps slow uniformly continuous not in paving process
Interruption traveling, road not speed change or pause.
Pave construction
(1) after paver is in place and adjusts, preheating guarantor is carried out to paver and screed before starting construction
Temperature work, asphalt material carry out half range using CBG-423 type asphalt-spreader and pave；Before paving, the quality of base is checked, to adhesion coating
Insufficient, gdna contamination is cleaned out in time and is mended and spreads adhesion coating pitch.The pitch that paves in the work surface of supervising engineer's approval is mixed
Material is closed, when starting to pave, is parked in the asphalt mixture trucks at scene at 3 or more, paver speed uniformly carries out, as far as possible
It reduces and shuts down.In continuous paving process, when dumper discharging, is parked in front of paver at 10~30cm, to guarantee not striking against to pave
Machine, dumper hangs neutral gear at this time, is pushed and is moved forward by paver.Since cause specific is shut down wait expect, with the pitch in the live face that paves
Subject to temperature, when temperature is lower than 135 DEG C, paver screed is lifted, transverse joint is made., road surface thickness irregular to shape
The place different, space is restricted and the pavers such as manual construction object connector can not work is adopted through supervising engineer's approval
It manually paves, accomplishes when paving:
1. asphalt is discharged on iron plate, button, which is seized, when paving paves, and reduces to prevent temperature, isolation.
2. being flattened when paving, to prevent isolation.
3. the midway that paves, without pause, each process accomplishes that linking is close.
4. avoiding Manual when low temperature, strong wind
(2) when paving, asphalt must slowly, uniformly, uninterruptedly pave, must not arbitrarily conversion rate or
It stops over.The height of mixture in paver screw feed appliance keeps being not less than the 2/3 of feed appliance height, keeps off screed
Mixture is consistent within the scope of overall with before plate, and paving layer is avoided segregation phenomenon occur, if special messenger checks placement thickness and puts down
Whole degree finds that part isolation, drag mark and other problems organize hand fit to handle in time, and longitudinal separation is preferably 8- between paver
10m。
(3) oil-water mixture for preventing sizing on a small quantity is brushed before paver material feeding in hopper, mixture laying temperature is suitable
Not less than 135 DEG C (low-temperature construction is not less than 150 DEG C).Paver can not be spread and place, cooperate Manual (to pave in time
Thickness spreads high 1.5cm or so compared with machine).After screed is fixed by required thickness, it must not arbitrarily adjust, start before paving, use and face
The plank support pad screed of layer pine paving uniform thickness.Spreading speed is according to the yield, Mechanical Equipment Matching situation and the thickness that paves of mixer
Degree, width are calculated as follows:
V=(100 × Q × C) ÷ (60D × W × T)
In formula: V--- paver speed (m/min)
The density (t/m3) of asphalt after D--- compaction moulding
Q--- mixer yield (t/h)
W--- paving width (m)
Average thickness (cm) after T---- paving layer compaction moulding
C---- efficiency factor.
In paving process when there are following situations, the artificial guidance of person in charge at the scene of tissue in time is lower to be carried out at part
Reason:
A. cross section is undesirable；
B. structure joint area lacks material；
C. the belt edge that paves locally lacks material；
D. the obvious out-of-flatness in surface；
E. local mixing material obviously isolates；
F. there is apparent drag mark after paver.
(4) when pavement spread defect is more serious, to stop paving, investigate thoroughly reason and improve Paving Techniques or shovel in time
Except doing over again.When using Manual, spade used will be stained with a small amount of oil water mixture (not influence mixture quality for degree), pave
When should detain spade and pave, spade must not be raised and far thrown, flattened when paving with strike-off stick, want weight consistent when striking off, 2-3 times is scraped back and forth and reach
To smooth, spreading the isolation that causes to gather materials cannot be struck off repeatedly repeatedly.After machine spreading, when there is cross section and not meeting to want
Ask, the belt edge that paves lacks material, the obvious out-of-flatness in surface, the obvious isolation in part, have apparent drag mark after paver when, use
Make up a deficiency or replace mixture in artificial part.
The construction temperature of asphalt controls (DEG C)
7, the compacting and molding of mixture
Bituminous concrete is paved after molding, and tissue rolls immediately, to ensure compacting temperature and compaction quality.Road roller with
Even speed traveling, outside-in rolls (to roll from inside to outside at Blaps femaralis), and when rolling, two-wheeled arranged side by side is overlapped 40 lis
Rice or so when rolling, mustn't reverse end for end to be pressed in and be higher than with long-time with rigid steering and unexpected brake on the mixture newly spread
On 70 DEG C of asphalt concrete pavement.Asphalt material compacting machine uses two kinds of types of double-steel wheeled vibratory roller and rubber-tyred roller,
Special location is rammed using baby roller or artificial heat.
The compacting of bitumen concrete is divided into first pressing, multiple pressure, final pressure (including molding) three phases carry out, it is slow when road roller rolls and
Uniformly, and meet specification regulation.
A, first pressing is immediately paved using 13T dual-steel wheel road roller and is carried out static pressure, and must not generate passage, hair in rolling
It splits, road roller is rolled from a low side to high side, and when vibrated roller is compacted, road roller wheelmark is overlapped 10~20cm, glue
Adjacent to roll band overlapping 1/3-1/2 wheel width when wheel rolls, end extends at scalariform, last wheel baroclines, and pressing complete width is one
Time.First pressing generally rolls 2 times, checks flatness after first pressing immediately, is modified when necessary.
B, pressure Shi Xianyong dual-steel wheel road roller is closely followed first pressing vibroroller cmpacting 2 times again, uses 25T pneumatic-tired rollers immediately after
It carries out rubbing pressure, specific number of rolling is determined by test, but no less than 4~6 times, is pressed road surface to reach the compactness of requirement again, is had no
Significant wheelmark.
C, receipts face is carried out using dual-steel wheel road roller after multiple pressure to roll (i.e. final pressure), select double steel tire rollers,
It rolls twice or more, road surface will meet code requirement without wheelmark, finishing temperature.It is done the following when rolling:
1. the good temperature of strict control in compacting, speed, flatness, compactness, rolling section length etc., " five degree " ensure road
Face appearance and inherent quality.
2. rolled immediately after paving (segment length 30-50m is rolled, distance is accomplished short as far as possible between the compacted machine and paver,
Most short is 4-5m), speed keeps 1.5-2.0km/h when removing first pressing, rolling speed when multiple pressure is properly increased, to guarantee shorter
Effective time in complete three phases in must reach roll total pass.
3. road roller is forbidden turning to, brake or stopping on the section of non-roller-compaction or cooling；Road roller starts, stops
Accomplish slow progress of slowing down；Road roller rolls stepped on final pressure point in section one and extends, and the adjacent band that rolls is staggered
0.5m-1m makes to be compacted connector angle at 45 °, guarantees compacting connector not on same cross section.
4. having divided first pressing, multiple pressure, final pressure section when rolling, prevents leakage pressure, presses phenomenon less.Stop after the completion of rolling
It sails, road roller is parked in final pressure and is completed and on section of the temperature lower than 50 DEG C.
5. painting spills oil water mixture on steel wheel, and prevents oil water mixture from dripping when steel roller, which has, is stained with wheel phenomenon
On road surface, rubber-tyred roller rolls one section of backward tire watering of hour wheel fetal hair heat.
6. the marginal position that road roller can not be compacted, using vibration tamping plate compacting.Compacting machinary or haulage vehicle are often examined
It repairs, with oil-leakage-prevention.
Forbid parking any mechanical equipment or vehicle on uncooled asphaltic road-mix surface course 7. the same day rolls, must not be scattered
The sundries such as mineral aggregate, oil plant.
It is unable to other places of operation for road roller, with manual heat rammer or leapfrog, mixture is tamped to defined
Compactness.On rolling not yet cooling section, any mechanical equipment or vehicle cannot be parked, must not be scattered mineral aggregate, oil plant etc.
Sundries.After rolling, compactness is detected in time, it is ensured that compactness reaches the 96% of Marshall Test density.
8, testing inspection result
Asphalt mixture in track test dynamic stability testing result
Asphalt Mixture at Low Temperature bend test failure strain testing result
Stability of asphalt mixture testing result
9, joint treatment
Transverse joint
When construction daily terminates or stops paving for some reason, stays construction joint and is handled in time by transverse joint, processing method are as follows:
Bevelling part is vertically cut along construction width overall with, sprays appropriate emulsified asphalt in joint-cutting side when next making, and will newly mix
Material gos deep into molded face 30cm, so that molded surface layer is heated, to keep new and old mixture overlap joint good.Road roller edge connects
Seam first laterally rolls, gradually mobile towards new face by old when rolling, and laterally rolls and finishes, then carries out longitudinal rolling.
Longitudinal seam
When combining the longitudinal seam to pave at echelon using paver, front paved mixture part leave 10~
20cm wouldn't be rolled, as the elevation basal plane of another paver, and the paving layer overlapping for having 5~10cm or so, with hot seam
Form is rolled to eliminate seam mark.
10, open to traffic
Asphalt concrete pavement waits for open after the complete natural cooling in making section, mix surface temperature are lower than 50 DEG C
Traffic.Open to traffic rear vehicle travel speed should control within 30km/h.
To the above description of disclosed example, enable those skilled in the art to implement or use the present invention.It is right
A variety of modifications of these embodiments will be readily apparent to those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest scope.
Claims (10)
1. a kind of high-performance steel slag road surface, which is characterized in that including
AC-13C asphalt concrete layer (1), the AC-13C asphalt concrete layer (1) is with a thickness of 3~4cm；
AC-16C asphalt concrete layer (2), the AC-16C asphalt concrete layer (2) is with a thickness of 4~7cm；
Base (3) on cement stabilized macadam, base (3) is with a thickness of 15~20cm on the cement stabilized macadam；
Cement stabilized macadam is gone to a grassroots level (4), and the cement stabilized macadam goes to a grassroots level (4) with a thickness of 15~20cm；
Sticking layer oil is equipped between the AC-13C asphalt concrete layer (1) and the AC-16C asphalt concrete layer (2)；
Priming oil is equipped on the AC-16C asphalt concrete layer (2) and the cement stabilized macadam between base (3).
2. a kind of high-performance steel slag road surface according to claim 1, which is characterized in that the AC-13C asphalt concrete layer
(1) or the AC-16C asphalt concrete layer (2) is gathered materials and asphalt 100:(5~5.3 by steel slag thickness) mix and
At；
It is 10~15mm that the steel slag thickness, which is gathered materials including specification, the steel slag coarse aggregate of 5~10mm and specification are 0~5mm steel
Slag fine aggregate；
The asphalt includes 70A matrix pitch and SBS modified pitch.
3. a kind of high-performance steel slag road surface according to claim 2, which is characterized in that the AC-16C asphalt concrete layer
(2) 70A matrix pitch and SBS modified pitch ratio are 7:3,70A matrix pitch in the AC-13C asphalt concrete layer (1) in
It is 6:4 with SBS modified pitch ratio.
4. a kind of high-performance steel slag road surface according to claim 3, which is characterized in that base on the cement stabilized macadam
(3) and the cement stabilized macadam go to a grassroots level (4) be cement stone concrete structure.
5. a kind of high-performance steel slag road surface according to claim 1-3, which is characterized in that the sticking layer oil thickness
For 0.5~3mm, the priming oil is with a thickness of 0.5~3mm.
6. a kind of construction method on high-performance steel slag road surface, which comprises the following steps:
1) pre- laying road arranges, and is compacted using street roller, then road pavement is cleared up；
2) cement stabilized macadam is laid with to go to a grassroots level (4), after cement stabilized macadam go to a grassroots level (4) it is firm after, it is broken to be laid with cement stabilizing
Shi Shang base (3), and 6-10 days maintenance of surface are carried out to base on cement stabilized macadam (3)；
3) before making asphalt concrete layer, the quality of base is checked, it is desirable that dense surface must not have discrete particles, soil miscellaneous
Object cleans up before construction, sprays sticking layer oil；
4) AC-16C asphalt concrete layer (2) transport is laid with, and AC-16C asphalt concrete layer (2) is transported to paving site≤0.5h,
Temperature >=135 DEG C are laid with, are at the uniform velocity laid with using paver, bituminous concrete is paved after molding, steamroller is adopted, with true
Compacting temperature and compaction quality are protected, oil reservoir is sprayed；
5) the AC-13C asphalt concrete layer (1) transport is laid with, AC-13C asphalt concrete layer (1) be transported to paving site≤
0.5h is laid with temperature >=135 DEG C, is at the uniform velocity laid with using paver, bituminous concrete is paved after molding, is ground using road roller
Pressure, to ensure compacting temperature and compaction quality；
6) asphalt concrete pavement waits for that friendship can be opened after the complete natural cooling in making section, mix surface temperature are lower than 50 DEG C
Logical, open to traffic rear vehicle travel speed should control within 30km/h.
7. a kind of construction method on high-performance steel slag road surface according to claim 1, which is characterized in that the sprinkling adhesion coating
It being sprayed when oily and saturating oil reservoir using bituminous distributor, spray line preferably forms 28 °~32 ° angles with road surface, and has 8-15cm height,
So that the sticking layer oil sprayed on road surface forms overlapping shape.
8. a kind of construction method on high-performance steel slag road surface according to claim 1, which is characterized in that in the step 4)
Paver speed is V=(100 × Q × C) ÷ (60D × W × T)
In formula: V--- paver speed (m/min)
The density (t/m3) of asphalt after D--- compaction moulding
Q--- mixer yield (t/h)
W--- paving width (m)
Average thickness (cm) after T---- paving layer compaction moulding
C---- efficiency factor, efficiency factor value are 0.8-0.95.
9. a kind of construction method on high-performance steel slag road surface according to claim 1, which is characterized in that the road roller is ground
Outside-in rolls when pressure, and bend by eminence to roll from inside to outside, and when rolling, two-wheeled arranged side by side is overlapped 35-45cm, rolls
When, it mustn't be reversed end for end on the mixture newly spread and hardness turns to and brakes suddenly and be pressed in the pitch higher than 70 DEG C greater than 3min
On concrete topping.
10. according to a kind of construction method on the described in any item high-performance steel slag road surfaces of claim 5~8, which is characterized in that institute
AC-13C asphalt concrete layer (1) is stated with a thickness of 3~4cm；The AC-16C asphalt concrete layer (2) is with a thickness of 4~7cm；Institute
Base on cement stabilized macadam (3) is stated with a thickness of 15~20cm；The cement stabilized macadam go to a grassroots level (4) with a thickness of 15~
20cm；The sticking layer oil is with a thickness of 0.5~3mm, and the priming oil is with a thickness of 0.5~3mm.
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| CN112030690A (en) * | 2020-08-19 | 2020-12-04 | 中交路桥建设有限公司 | Construction method for treating pavement cracks |
| CN112359666A (en) * | 2020-10-16 | 2021-02-12 | 上汽通用汽车有限公司 | Road capable of reducing vehicle sliding resistance and paving method thereof |
| CN113802430A (en) * | 2021-09-02 | 2021-12-17 | 湖南交通国际经济工程合作有限公司 | Construction process of drainage asphalt pavement |
| CN114575212A (en) * | 2022-03-01 | 2022-06-03 | 中铁北京工程局集团有限公司 | High-bearing-capacity road surface structure and paving construction method |
| CN114775357A (en) * | 2022-04-29 | 2022-07-22 | 中铁四局集团第一工程有限公司 | Construction method for upper surface layer of steel slag asphalt mixture |
| CN115012271A (en) * | 2022-05-09 | 2022-09-06 | 中铁四局集团第一工程有限公司 | Method for treating construction joint in pavement paving process of steel slag asphalt mixture |
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