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 PDF

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Publication number
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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CN
China
Prior art keywords
asphalt concrete
concrete layer
thickness
steel slag
stabilized macadam
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Pending
Application number
CN201910563603.5A
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Chinese (zh)
Inventor
李卫华
刘勇
汤佳男
李绍春
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Beijing Haode Interactive Technology Co Ltd
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Beijing Haode Interactive Technology Co Ltd
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Priority to CN201910563603.5A priority Critical patent/CN110258236A/en
Publication of CN110258236A publication Critical patent/CN110258236A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/18Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/18Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/182Aggregate or filler materials, except those according to E01C7/26
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/32Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ

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

A kind of high-performance steel slag road surface and its construction method
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.
CN201910563603.5A 2019-06-26 2019-06-26 A kind of high-performance steel slag road surface and its construction method Pending CN110258236A (en)

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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
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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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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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