CN104878675A - Rolling and forming method for flexible base in bituminous pavement structural layer - Google Patents
Rolling and forming method for flexible base in bituminous pavement structural layer Download PDFInfo
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- CN104878675A CN104878675A CN201510147844.3A CN201510147844A CN104878675A CN 104878675 A CN104878675 A CN 104878675A CN 201510147844 A CN201510147844 A CN 201510147844A CN 104878675 A CN104878675 A CN 104878675A
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Abstract
The present invention relates to a rolling and forming method for a flexible base in a bituminous pavement structural layer, which comprises the steps of paving an ATB-30 asphalt and stabilized crushed stone mixture on a paver for over 30 minutes; beginning the primary rolling operation on the mixture when the temperature of the ATB-30 asphalt and stabilized crushed stone mixture is 135-150 DEG C, wherein two double-drum rollers are arranged side by side in an echelon to roll the mixture for one time so as to compact the ATB-30 asphalt and stabilized crushed stone mixture and obtain an ATB-30 asphalt and stabilized crushed stone flexible base; after the primary rolling operation, setting an identifier for a secondary rolling region by a technician; beginning the secondary rolling operation when the temperature of the ATB-30 asphalt and stabilized crushed stone flexible base in the secondary rolling region is 125-140 DEG C, wherein a pneumatic-tired roller and a double-drum roller are adopted to cyclically and alternately roll the flexible base for four times, with the temperature of the ATB-30 asphalt and stabilized crushed stone flexible base in the secondary rolling region kept smaller than 115 DEG C; and consequently conducting the final rolling operation, wherein two double-drum rollers are arranged side by side in an echelon to roll the flexible base for one time, with the temperature of the ATB-30 asphalt and stabilized crushed stone flexible base in the secondary rolling region kept smaller than 90 DEG C.
Description
Technical field
The present invention relates to the roller-compaction method of flexbile base in a kind of asphalt pavement structural layer, belong to pavement construction field.
Background technology
Asphalt Stabilized Crushed Stone Basement is widely used abroad, but seldom uses at home, and relevant research is just at the early-stage.For adapting to the needs that communication develops rapidly, highway engineering in China is continuous research promotion new material in building, new technology, wherein ATB-30 dense bitumen stabilization gravel is also applied in speedway and town road, build in recent years and adopted the speedway of ATB dense bitumen stabilization gravel to have the little speedway of toothed oak, Xing faces speedway, Huang prolongs speedway, spring three speedway Deng Duotiao highway, in these high-grade highways above, the design of dense bitumen stabilization gravel layer is mainly based on ATB-25, and thickness is many at below 10cm or more than 14cm, in construction, main employing divides two-layer paving, the form of rolling operation.
The roller-compaction method of flexbile base in prior art asphalt pavement structural layer first adopts double-steel wheeled vibratory roller operation pressing through again in journey.Vibratory roller, in vibration processes, can make the pellet of larger quality obtain larger inertia force, first departs from adjacent pellet and moves down.So due to the difference of size particles in compacting process, if will stratification be there is in long-time vibration.
Construction adopts compaction assembly: the two steel wheel static pressure of first pressing 1 time, press double-steel wheeled vibratory 3 times again, and rubber tire rolls 2 times, the quiet 1-2 time of final pressure steel wheel, and this mechanical combination not science after testing, does not reach the effect of grinding compacting.
Flexbile base adopts heat to mix or cold-mix asphalt compound, pitch penetrated rubble, and do not add the basic unit of the material making such as pellet class of any binder.ATB-30 is called dense bitumen stabilization gravel compound, its difference from asphalt concrete mainly nominal particle diameter different, and nominal maximum particle diameter is usually at 31.5mm.The general Design Air Voids of ATB Asphalt Stabilized Macadam is 3% ~ 6%, and making layer thickness is thicker.Have good cage construction after laying of roadway, and have the characteristics such as waterproof, high-temperature stable, anti-low-temperature cracking, therefore Flexible Base structure has the ability of excellent Pavement Performance and opposing environment and heavy traffic load fatigue effect.Adopting ATB-30 Asphalt Stabilized Macadam structure, is the appearance in order to reduce reflection cracking in a pavement, prolonging service life of pavement.
Summary of the invention
Technical problem to be solved by this invention is to provide the roller-compaction method of flexbile base in a kind of asphalt pavement structural layer, the present invention is by Optimizing construction technique, what ensure Large stone in asphalt pavement structural layer (nominal maximum particle diameter 31.5mm), heavy thickness (10-15cm is thick) flexbile base rolls quality, is the experience that similar construction accumulation is from now on certain.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of roller-compaction method of flexbile base in asphalt pavement structural layer, comprising:
1) first pressing
After paver paves ATB-30 bitumen stability macadam mixture 30m, and the temperature of ATB-30 bitumen stability macadam mixture is when being 135-150 DEG C, start first pressing, first pressing adopts 2 dual-steel wheel road rollers, one-tenth echelon arranged side by side rolls 1 time, static pressure during advance, vibroroller cmpacting during retrogressing, compacting ATB-30 bitumen stability macadam mixture, obtains ATB-30 flexible asphalt and gravel stabilization base layer;
2) multiple pressure
After first pressing, multiple nip is set by technician and identifies, if when the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is 125-140 DEG C in well rear and multiple nip, start multiple pressure, multiple pressure adopts pneumatic-tired rollers and dual-steel wheel road roller, and cycle alternation rolls 4 times, and multiple pressure will complete before in multiple nip, the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is less than 115 DEG C, speed is evenly normal, not speed-raising suddenly, reduction of speed, stops, start, concrete steps are as follows:
1st step, adopts 2 pneumatic-tired rollers to become echelon side by side, rolls 1 time at multiple nip;
2nd step, adopt 2 dual-steel wheel road rollers multiple nip full width vibroroller cmpacting 1 time, vibration frequency is 30-50Hz, and amplitude is 0.3-0.8mm;
3rd step, repeats the 1st step and rolls,
4th step, repeats the 2nd step and rolls;
3) final pressure
Immediately carry out final pressure after multiple pressure, adopt 2 dual-steel wheel road rollers to become echelon to roll 1 time side by side, move forward and backward and be static pressure, before the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is less than 90 DEG C, completes final pressure, eliminate all wheelmarks.
On the basis of technique scheme, the present invention can also do following improvement.
Further, 1) in, the speed of described dual-steel wheel road roller is 2.5km/h, and the vibration frequency of described vibroroller cmpacting is 30-50Hz, and amplitude is 0.3-0.8mm.
Further, 2) in, the speed of described dual-steel wheel road roller and pneumatic-tired rollers is 3km/h.
Further, 3) in, the speed of described dual-steel wheel road roller is 3km/h.
Described one-tenth echelon arranged side by side rolls and refers to that rolling compaction machine is in line, and advances side by side and rolls.
The invention has the beneficial effects as follows:
The invention provides the roller-compaction method of flexbile base in a kind of asphalt pavement structural layer, this method is after paver normally paves operation, what adopt steel roller and pneumatic-tired rollers cycle alternation rolls mode, roll flexbile base, make it to reach quality acceptance standard, reach the effect of road surface rapid shaping, saved the duration, saved construction cost.
Meanwhile, cycle alternation rolling technique makes the disposable acceptance(check) of Asphalt Concrete Pavement Compaction degree, and construction quality is excellent, speed of application is fast, obtains the favorable comment of owner unit, supervisor, for my company sets up good corporate image.
Detailed description of the invention
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
Beijing-Harbin speedway (G1) reconstruction and extension project Siping City is to Changchun Section, and the Jilin Province be positioned in the middle part of three provinces in the northeast of China is domestic, and being the important channel that Jilin Province and even Heilongjiang Province go out Guan Dahai, is the Important Sections that the Three Eastern Provinces connect each other.Circuit arises from Siping City five li of slopes of lucky distant two province's intersections, terminates in the half ditch in southwest, Changchun, section total length 98.1km.In National Highway Planning Net, this section of reconstruction and extension project, is extremely important to the fast development of three provinces in the northeast of China.
This Expressway Design driving speed per hour 120 kilometers, two-way 8 lane designs.That two-way eight track reorganization and expansion are carried out to existing two-way Four-Lane Road.Road structure form is divided into three layers, is respectively grain formula bituminous concrete AC-20,5cm modified asphalt horse's hoofs fat crushed stones compound SMA-16 in 13cm bitumen stability macadam mixture ATB-30,7cm.
In this engineering, adopt the thick ATB-30 Large stone dense bitumen stabilization gravel compound of 13cm as flexbile base.Its thickness, particle diameter reach the extreme value of regulation and stipulation substantially, have easy segregation, be difficult to the features such as compacting in work progress.Therefore, this base layer construction proposes high requirement to construction technology and construction control, therefore the importance conducted a research is self-evident.
In work progress, after paver normally paves operation, what adopt steel roller and pneumatic-tired rollers cycle alternation rolls mode, rolls flexbile base, makes it to reach " Of Road Engineering Quality Checking And Evaluation standard " (JTG F80/1-2004) quality acceptance standard.Concrete steps are as follows:
1) first pressing
After paver paves ATB-30 bitumen stability macadam mixture 30m, and the temperature of ATB-30 bitumen stability macadam mixture is when being 135-150 DEG C, start first pressing, first pressing adopts 2 Tai Daina Parker 624 dual-steel wheel road rollers, one-tenth echelon arranged side by side rolls 1 time, speed is 2.5km/h, static pressure during advance, vibroroller cmpacting during retrogressing, vibration frequency is 30-50Hz, amplitude is 0.3-0.8mm, and compacting ATB-30 bitumen stability macadam mixture, obtains ATB-30 flexible asphalt and gravel stabilization base layer;
2) multiple pressure
After first pressing, arrange multiple nip by technician to identify, if when in well rear and multiple nip, the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is 125-140 DEG C, start multiple pressure, multiple pressure adopts Xu work 262 pneumatic-tired rollers and Dai Na Parker 624 dual-steel wheel road roller, the speed of described dual-steel wheel road roller and pneumatic-tired rollers is 3km/h, cycle alternation rolls 4 times, multiple pressure will complete before in multiple nip, the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is less than 115 DEG C, and speed is evenly normal, not speed-raising suddenly, reduction of speed, stop, start, concrete steps are as follows:
1st step, adopts 2 Xu work 262 pneumatic-tired rollers to become echelon side by side, rolls 1 time at multiple nip;
2nd step, adopt 2 Tai Daina Parker 624 dual-steel wheel road rollers multiple nip full width vibroroller cmpacting 1 time, vibration frequency is 30-50Hz, and amplitude is 0.3-0.8mm;
3rd step, repeats the 1st step and rolls,
4th step, repeats the 2nd step and rolls;
3) final pressure
Immediately final pressure is carried out after multiple pressure, adopt 2 Tai Daina Parker 624 dual-steel wheel road rollers to become echelon to roll 1 time side by side, speed is 3km/h, moves forward and backward and is static pressure, before the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is less than 90 DEG C, completes final pressure, eliminates all wheelmarks.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the roller-compaction method of flexbile base in asphalt pavement structural layer, is characterized in that, comprising:
1) first pressing
After paver paves ATB-30 bitumen stability macadam mixture 30m, and the temperature of ATB-30 bitumen stability macadam mixture is when being 135-150 DEG C, start first pressing, first pressing adopts 2 dual-steel wheel road rollers, one-tenth echelon arranged side by side rolls 1 time, static pressure during advance, vibroroller cmpacting during retrogressing, compacting ATB-30 bitumen stability macadam mixture, obtains ATB-30 flexible asphalt and gravel stabilization base layer;
2) multiple pressure
After first pressing, arrange multiple nip by technician to identify, if when in well rear and multiple nip, the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is 125-140 DEG C, start multiple pressure, multiple pressure adopts pneumatic-tired rollers and dual-steel wheel road roller, cycle alternation rolls 4 times, and multiple pressure will complete before in multiple nip, the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is less than 115 DEG C, and concrete steps are as follows:
1st step, adopts 2 pneumatic-tired rollers to become echelon side by side, rolls 1 time at multiple nip;
2nd step, adopt 2 dual-steel wheel road rollers multiple nip full width vibroroller cmpacting 1 time, vibration frequency is 30-50Hz, and amplitude is 0.3-0.8mm;
3rd step, repeats the 1st step and rolls,
4th step, repeats the 2nd step and rolls;
3) final pressure
Immediately carry out final pressure after multiple pressure, adopt 2 dual-steel wheel road rollers to become echelon to roll 1 time side by side, move forward and backward and be static pressure, before the temperature of ATB-30 flexible asphalt and gravel stabilization base layer is less than 90 DEG C, completes final pressure.
2. roller-compaction method according to claim 1, is characterized in that, 1) in, the speed of described dual-steel wheel road roller is 2.5km/h, and the vibration frequency of described vibroroller cmpacting is 30-50Hz, and amplitude is 0.3-0.8mm.
3. roller-compaction method according to claim 1 and 2, is characterized in that, 2) in, the speed of described dual-steel wheel road roller and pneumatic-tired rollers is 3km/h.
4. roller-compaction method according to claim 3, is characterized in that, 3) in, the speed of described dual-steel wheel road roller is 3km/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510147844.3A CN104878675A (en) | 2015-03-31 | 2015-03-31 | Rolling and forming method for flexible base in bituminous pavement structural layer |
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| CN201510147844.3A CN104878675A (en) | 2015-03-31 | 2015-03-31 | Rolling and forming method for flexible base in bituminous pavement structural layer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386037A (en) * | 2017-07-20 | 2017-11-24 | 天津市国腾公路咨询监理有限公司 | A kind of compaction technology based on asphalt compactingproperties |
| CN107462695A (en) * | 2017-07-20 | 2017-12-12 | 天津市国腾公路咨询监理有限公司 | A kind of final pressure temperature determining method based on asphalt compactingproperties |
| CN111139714A (en) * | 2020-02-12 | 2020-05-12 | 中建八局第四建设有限公司 | Bridge deck concrete laying oscillation equipment and laying method thereof |
| CN115806409A (en) * | 2022-12-19 | 2023-03-17 | 河南光大路建工程管理有限公司 | Asphalt-rich framework type pavement and construction process |
| CN115806409B (en) * | 2022-12-19 | 2024-06-07 | 河南光大路建工程管理有限公司 | Asphalt-rich skeleton type pavement and construction process |
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| JP3981272B2 (en) * | 2002-01-11 | 2007-09-26 | 酒井重工業株式会社 | Construction method of asphalt road surface |
| CN102071613A (en) * | 2011-01-26 | 2011-05-25 | 中交第二公路工程局有限公司 | Asphalt-treated permeable-base (ATB) construction process |
| JP2012017605A (en) * | 2010-07-08 | 2012-01-26 | Hitachi Constr Mach Co Ltd | Vibration-roller vehicle |
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| JP3981272B2 (en) * | 2002-01-11 | 2007-09-26 | 酒井重工業株式会社 | Construction method of asphalt road surface |
| JP2012017605A (en) * | 2010-07-08 | 2012-01-26 | Hitachi Constr Mach Co Ltd | Vibration-roller vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386037A (en) * | 2017-07-20 | 2017-11-24 | 天津市国腾公路咨询监理有限公司 | A kind of compaction technology based on asphalt compactingproperties |
| CN107462695A (en) * | 2017-07-20 | 2017-12-12 | 天津市国腾公路咨询监理有限公司 | A kind of final pressure temperature determining method based on asphalt compactingproperties |
| CN111139714A (en) * | 2020-02-12 | 2020-05-12 | 中建八局第四建设有限公司 | Bridge deck concrete laying oscillation equipment and laying method thereof |
| CN115806409A (en) * | 2022-12-19 | 2023-03-17 | 河南光大路建工程管理有限公司 | Asphalt-rich framework type pavement and construction process |
| CN115806409B (en) * | 2022-12-19 | 2024-06-07 | 河南光大路建工程管理有限公司 | Asphalt-rich skeleton type pavement and construction process |
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Application publication date: 20150902 |