CN110080066A - A kind of highlands asphalt pavement construction method - Google Patents
A kind of highlands asphalt pavement construction method Download PDFInfo
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- CN110080066A CN110080066A CN201910452157.0A CN201910452157A CN110080066A CN 110080066 A CN110080066 A CN 110080066A CN 201910452157 A CN201910452157 A CN 201910452157A CN 110080066 A CN110080066 A CN 110080066A
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- highlands
- temperature
- mixture
- asphalt
- asphalt pavement
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
- E01C19/185—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect for both depositing and spreading-out or striking-off the deposited mixture
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
- E01C19/266—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles fitted to vehicles, road-construction or earth-moving machinery, e.g. auxiliary roll readily movable to operative position ; provided with means for facilitating transport; Means for transporting rollers; Arrangements or attachments for converting vehicles into rollers, e.g. rolling sleeves for wheels
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses a kind of highlands asphalt pavement construction methods, are related to highway construction technical field.The construction method includes: in highlands asphalt pavement construction, mobile windbreak is respectively set in two sides along construction road surface, unilateral setting wall is long every time is not less than 200 meters, wall height is not less than 50 centimetres, wall bottom and ground are in close contact, the material of the movable type windbreak is non-ventilating material, to reduce the temperature loss of paving process Asphalt Mixture.Concrete construction method includes: that (1) asphalt mixes and stirs；(2) mixture transports；(3) it paves；In work progress, when wind-force reaches 4 grades or more, mobile bulkhead is set；(4) mixture rolls.Windbreak designed by the invention can reduce the loss of asphalt temperature, improve bituminous pavement paving quality；The above method of the present invention is highly suitable for the severe construction environments such as highlands temperature is low, and wind speed is big, and surface temperature is low.
Description
Technical field
The present invention relates to highway construction technical field more particularly to a kind of highlands asphalt pavement construction methods.
Background technique
Since highlands natural environment is severe, temperature is lower, and wind speed is larger, and climate variability, surface temperature are low, and haul distance is remote
Etc. reasons, bituminous pavement in the construction that paves, low temperature environment and wind-force effect under, mixture is very sensitive to temperature, heat dissipation
Comparatively fast, effectively rolling the time greatly shortens, and is difficult to meet pavement construction code requirement, and construction quality cannot be effectively ensured, and leads to
Expense increase is reprocessed in maintenance after vehicle, and construction quality warranty costs is higher, reduces the service life on road surface.
Summary of the invention
In view of this, main purpose is solution the embodiment of the invention provides a kind of highlands asphalt pavement construction method
Certainly mixture pave construct when rapid heat dissipation, the problem of influencing construction quality of pavement.
In order to achieve the above objectives, invention broadly provides following technical solutions:
On the one hand, the embodiment of the invention provides a kind of highlands asphalt pavement construction method, the construction method packets
It includes:
In highlands when asphalt pavement construction, mobile windbreak is respectively set in the two sides along construction road surface, to subtract
The temperature loss of few paving process Asphalt Mixture.
Preferably, Under Construction Road two sides are respectively provided with mobile windbreak, unilateral setting wall is long every time is not less than 200
Rice, wall height are not less than 50 centimetres, and wall bottom and ground are in close contact.
Preferably, the material of the movable type windbreak is non-ventilating material, such as the closely knit sheet material of plank, cardboard
Or the stuffy cloth-like material such as waterproof cloth, colour bar cloth.
Preferably, the specific method in highlands asphalt pavement construction the following steps are included:
(1) asphalt mixes and stirs；
(2) mixture transports；
(3) it paves；In work progress, when wind-force reaches 4 grades or more, mobile bulkhead is set；
(4) mixture rolls.
Preferably, the detailed process that step (1) asphalt mixes and stirs:
Asphalt material dosage and temperature control are all made of electronic system automatic control；
It mixes and stirs and is carried out using dry mixing and two step of wet-mixing, wherein the dry mixing time is no less than 5-10 seconds, when every batch of is mixed and stirred and produced
Between control at 45-60 seconds；
For the control of blending station discharging time between 7 points early -7 points of evening, control mixture factory temperature is higher than normal temperature
10-15 DEG C out.
Preferably, the detailed process of step (2) the mixture transport:
It is charged using dump body truck, when mixer is to dumper blowing, automobile is moved forward and backward, several times " product word
Type " charging, to reduce the segregation phenomenon of coarse aggregate；
Dumper side is wrapped up using thermal insulation material, and top uses canvas+cotton-wadded quilt covering and heat insulating, and canvas all covers vehicle
Continue covering in discharge process until discharging terminates in compartment top portion, it is ensured that it is required that temperature or avoiding pollution environment；
Before mixture entrucking, interior wall and bottom plate smear one layer of edible oil water mixture, wherein oil: water=1:3, and will
Extraction raffinate cleans up；
Scene temperature is transported to using number display insertion-type thermocouple thermometer detection mixture；
In two middle side parts of mixture haulage vehicle, a temperature check hole is respectively arranged in the above position 30cm of car bottom；
When inspection, it is first inserted into a steel casing, then thermometer is inserted into casing, asphalt is goed deep into end, and insertion depth is big
In 15cm.
Preferably, the step (3) paves:
Surface layer is by the way of contact equalizer bar or Sonic Averaging System control paving thickness；To improve flatness,
It balances beam length and is not less than 12m, contact balance beam length is longer, can get preferable surface evenness；
Pressing plate should be preheated before per tour operation, temperature is not less than 100 DEG C, waiting in place；All contact asphalts
Tool surfaces, brushing interleaving agent, in order to avoid adherency pellet.
Paver spreading speed is controlled in 1.5~2.2m/min；
Paver screw feed appliance should rotate incessantly, and two sides maintain the full width face of no less than feed level 2/3 not
It isolates.
Preferably, step (4) mixture rolls:
It rolls and is divided into first pressing, three multiple pressure, final pressure operation sections；
Each rolling paragraph, the division is clearly demarcated, and obvious boundary sign is arranged, and the temperature lower period rolls paragraph and accordingly shortens,
Connect stubble presses length not to be preferably less than 2m again；
It wipes pneumatic-tired rollers tire and uses vegetable oil；
In steel roller roller compaction process, use clean drinking water as interleaving agent, amount of water sprayed should not be too large, and make steel wheel table
The not viscous wheel in face is degree.
Compared with prior art, the beneficial effects of the present invention are:
In asphalt pavement construction, windbreak designed by the invention can reduce the loss of asphalt temperature, improve
Bituminous pavement paving quality；The above method of the present invention is highly suitable for the evils such as highlands temperature is low, and wind speed is big, and surface temperature is low
Bad construction environment；Pitch radiating rate can be reduced, raising rolls the time, meets pavement construction code requirement, construction quality obtains
To guarantee, reduces the maintenance after being open to traffic and reprocess expense, improve service life of road surface.
Detailed description of the invention
Fig. 1 is that the mixture that the embodiment of the present invention 1 provides carries out two layers waterproof, heat preservation of covering scene photo before weighing；
Fig. 2 is that the installation windbreak that the embodiment of the present invention 1 provides reduces temperature loss scene photo；
Fig. 3 be the embodiment of the present invention 1 provide canvas place mat machinery park and road roller derusting scene photo.
Specific embodiment
For further illustrate the present invention to reach the technical means and efficacy that predetermined goal of the invention is taken, below with compared with
Good embodiment, to specific embodiment, technical solution, feature and its effect applied according to the present invention, detailed description is as follows.Under
Stating the special characteristic, structure or feature in multiple embodiments in bright can be combined by any suitable form.
Embodiment 1
A kind of highlands asphalt pavement construction method, comprising the following steps:
(1) asphalt mixture mixing:
1. a variety of materials dosage and temperature control are automatically controlled using electronic system；In strict accordance with specification and test data control
The heating temperature of the heating temperature of mixture processed, especially pitch uniform mixing but also will not cause to make asphalt not only
Ageing of asphalt；
2. according to the determining mixture bitumen aggregate ratio of design and test, the weight and asphalt content of the various mineral aggregates of strict control,
And the control computer for being inputted blending station executes automatically；
3. mixing machine screen mesh size should match with mineral aggregate specification；Different mix types should configure different sieve pore groups
It closes, can refer to the selection of table 1；
The equivalent sieve pore of the intermittent mixing machine vibrating screen of table 1.
| Standard mesh | 2.36 | 4.75 | 9.5 | 16 | 19 | 26.5 | 37.5 |
| Vibration (dynamic mm sieve) hole | 3-4 | 6-7 | 11 | 19 | 22 | 30 | 37.5 |
Dry mixing and two step of wet-mixing (adding pitch) is taken to carry out 4. mixing and stirring, wherein the dry mixing time is no less than 5~10 seconds, and every batch of is mixed
It controls with the production time at 45~60 seconds.Pay attention to examining between adjustment coordination in works and Target Mixture Ratio during mixing and stirring
Deviation, in time to material progress spoon-proof is mixed and stirred, so that mineral aggregate gradation and asphalt content reach optimum value；
5. extremely frigid zones construction should follow " working at sunrise, rest at sunset ", by mixing station discharging time control 7:00~
Between 19:00, control mixture factory temperature is higher by 10~15 DEG C than normal temperature.The control of mix temperature is shown in Table 2.
Table 2. mixes and stirs temperature control table
| Pitch type | 110# grades of bi tumenf orr oads |
| Asphalt heating temperature DEG C | 145-155 |
| Mineral heating up temperature DEG C | Aggregate heating temperature is 10-30 higher than asphalt temperature |
| Mixture drop temperature DEG C | 135-155 |
| Transport scene temperature DEG C | Not less than 135 |
| Storage bin storage temperature DEG C | Temperature, which reduces, during bin stock is no more than 10 |
| Mixture discards temperature DEG C | Higher than 185 |
(2) mixture transports
1. the dump body truck using 25t or more charges, when mixer is to dumper blowing, automobile is moved forward and backward,
" Chinese character pin-shaped " charging several times, to reduce the segregation phenomenon of coarse aggregate；
2. dumper side is wrapped up using thermal insulation material, top uses canvas+cotton-wadded quilt covering and heat insulating, and canvas should be covered all
Firmly car body top continues covering in discharge process until discharging terminates, it is ensured that it is required that temperature or avoiding pollution environment；
3. before mixture entrucking, interior wall and bottom plate must smear one layer of edible oil water mixture (oil: water=1:3), and
Extraction raffinate is cleaned up；
4. being transported to scene temperature using number display insertion-type thermocouple thermometer detection mixture.In mixture transport vehicle
Two middle side parts, a temperature check hole (diameter 1.5-2.0cm) is respectively arranged in the above position 30cm of car bottom.When inspection,
It is first inserted into a steel casing, then thermometer is inserted into casing, asphalt is goed deep into end, and insertion depth is greater than 15cm；
(3) it paves
1. surface layer is by the way of contact equalizer bar or Sonic Averaging System control paving thickness.It is smooth to improve
Degree, balance beam length are not less than 12m, and contact balance beam length is longer, can get preferable surface evenness；
2. should preheat pressing plate before per tour operation, temperature is not less than 100 DEG C, waiting in place.All contact asphalts
Tool surfaces, should all brushing interleaving agent, in order to avoid adherency pellet；
3. paver must be slow, at the uniform velocity, it is continuous it is continual pave, must not arbitrarily speed change or stop over, to improve
Flatness and the isolation for reducing mixture.Spreading speed is controlled in 1.5~2.2m/min；
4. paver screw feed appliance should rotate incessantly, two sides maintain the full width face of no less than feed level 2/3
It does not isolate；
5. in work progress mobile bulkhead should be arranged, can subtract according to weather condition, when wind-force reaches 4 grades or more
Few asphalt temperature loss, bulkhead length are not less than bilateral 200m, and height is not less than 50cm.Bulkhead is non-ventilating material
?；
(4) mixture rolls
1. when rolling should by driving wheel towards paver, should follow immediately following slow pressure, frequency low-amplitude, longitudinal advance and retreat, from it is low to
High principle；
2. program and technique that test section determines should be followed by rolling.It rolls and is divided into first pressing, three multiple pressure, final pressure operation areas
Section.Each rolling paragraph, the division is clearly demarcated, and obvious boundary sign is arranged, and the temperature lower period rolls paragraph and accordingly shortens, and connects stubble
Pressure length is not preferably less than 2m again；
3. wiping pneumatic-tired rollers tire uses vegetable oil, prevent using diesel oil or lubricating oil.Steel roller rolled
Cheng Zhong should use clean drinking water as interleaving agent, and amount of water sprayed should not be too large, and making the not viscous wheel in steel wheel surface is degree；
4. all devices should be travelled to the subjacent bed for not spreading new surface layer after the same day rolls, use canvas or coloured silk
Bar cloth place mat is parked below spreading machine.
Construction method of the invention is the group wisdom achievement of Project Technical administrative staff Yu site operation personnel, construction party
The utilization of method not only effectively reduces material and mechanical one-shift consumption, but also improves work efficiency, it is ensured that bituminous pavement paves
Quality, overall reduction highway construction cost.
Before the formation of this construction method, every about 10200 ㎡ of machine-team paving operation, compared with constructing under normal temperature conditions
Compared with mechanical efficiency is low, expends fuel oil height, manually wastes larger.Bituminous concrete is caused because transport and paving material loss are larger
Design and code requirement is not achieved in the quality index such as compactness, flatness.
In strict accordance with construction method standard construction of the invention, avoid unreasonable, off quality because organizing in construction
Caused by delay work, economic waste of doing over again.Quality management is obviously improved, and the maintenance reclamation work after being open to traffic is reduced, and reduces work
Journey quality guarantee cost, hence it is evident that extend pavement life.Site operation is effectively managed, and cross construction operation is formd,
Shorten the construction period, hence it is evident that reduce project management expense expenditure, obtain preferable economic benefit.
By contrast, it is constructed using the method for the present invention, every machine-team paving operation improves mechanical use in 12750 ㎡ or so
Rate reduces fuel consumption, and artificial work efficiency is improved, and whole work efficiency improves 20% or so.Since construction operation is smooth,
Procedure connection is close, is conducive to the development of standardized construction, in work progress caused by rework rate be greatly reduced.Originally constructed
Usually there is the material of 3-9% to scrap in process of rework in journey.And after using new method, phenomenon of doing over again is essentially eliminated, is scrapped
Material drop to 1% or so.Therefore material cost overall reduction 2-8%.
Place, those skilled in the art can not select from the prior art to the greatest extent in the embodiment of the present invention.
Disclosed above is only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, is appointed
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with above-mentioned scope of protection of the claims
It is quasi-.
Claims (8)
1. a kind of highlands asphalt pavement construction method, which is characterized in that the construction method includes:
In highlands when asphalt pavement construction, mobile windbreak is respectively set in the two sides along construction road surface, to reduce booth
The temperature loss of paving process Asphalt Mixture.
2. a kind of highlands asphalt pavement construction method as described in claim 1, which is characterized in that Under Construction Road two sides
It is respectively provided with mobile windbreak, unilateral setting wall is long every time is not less than 200 meters, and wall height is not less than 50 centimetres, and wall bottom and ground are tight
Contiguity touching.
3. a kind of highlands asphalt pavement construction method as described in claim 1, which is characterized in that the movable type is kept out the wind
The material of wall is non-ventilating material.
4. a kind of highlands asphalt pavement construction method as described in claim 1, which is characterized in that described in highlands
The specific method of asphalt pavement construction the following steps are included:
(1) asphalt mixes and stirs；
(2) mixture transports；
(3) it paves；In work progress, when wind-force reaches 4 grades or more, mobile bulkhead is set；
(4) mixture rolls.
5. a kind of highlands asphalt pavement construction method as described in claim 1, which is characterized in that step (1) drip
The detailed process that green mixture mixes and stirs:
Asphalt material dosage and temperature control are all made of electronic system automatic control；
It mixes and stirs and is carried out using dry mixing and two step of wet-mixing, wherein the dry mixing time is no less than 5-10 seconds, and every batch of is mixed and stirred to be controlled with the production time
System was at 45-60 seconds；
For the control of blending station discharging time between 7 points early -7 points of evening, control mixture factory temperature is higher by 10- than normal temperature
15℃。
6. a kind of highlands asphalt pavement construction method as described in claim 1, which is characterized in that the step (2) is mixed
Close the detailed process of material transport:
It is charged using dump body truck, when mixer is to dumper blowing, automobile is moved forward and backward, several times " Chinese character pin-shaped " dress
Material, to reduce the segregation phenomenon of coarse aggregate；
Dumper side is wrapped up using thermal insulation material, and top uses canvas+cotton-wadded quilt covering and heat insulating, and canvas all covers carriage top
Continue covering in discharge process until discharging terminates in portion, it is ensured that it is required that temperature or avoiding pollution environment；
Before mixture entrucking, interior wall and bottom plate smear one layer of edible oil water mixture, wherein oil: water=1:3, and by extraction raffinate
It cleans up；
Scene temperature is transported to using number display insertion-type thermocouple thermometer detection mixture；
In two middle side parts of mixture haulage vehicle, a temperature check hole is respectively arranged in the above position 30cm of car bottom；It checks
When, it is first inserted into a steel casing, then thermometer is inserted into casing, asphalt is goed deep into end, and insertion depth is greater than
15cm。
7. a kind of highlands asphalt pavement construction method as described in claim 1, which is characterized in that step (3) booth
The detailed process of paving:
Surface layer is by the way of contact equalizer bar or Sonic Averaging System control paving thickness；To improve flatness, balance
Beam length is not less than 12m, and contact balance beam length is longer, can get preferable surface evenness；
Pressing plate should be preheated before per tour operation, temperature is not less than 100 DEG C, waiting in place；The equipment of all contact asphalts
Surface, brushing interleaving agent, in order to avoid adherency pellet.
Paver spreading speed is controlled in 1.5~2.2m/min；
Paver screw feed appliance should rotate incessantly, and the full width face that two sides maintain no less than feed level 2/3 does not occur
Isolation.
8. a kind of highlands asphalt pavement construction method as described in claim 1, which is characterized in that the step (4) is mixed
Close the detailed process that material rolls:
It rolls and is divided into first pressing, three multiple pressure, final pressure operation sections；
Each rolling paragraph, the division is clearly demarcated, and obvious boundary sign is arranged, and the temperature lower period rolls paragraph and accordingly shortens, and connects stubble
Pressure length is not preferably less than 2m again；
It wipes pneumatic-tired rollers tire and uses vegetable oil；
In steel roller roller compaction process, use clean drinking water as interleaving agent, amount of water sprayed should not be too large, and make steel wheel surface not
Viscous wheel is degree.
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| CN201910452157.0A CN110080066A (en) | 2019-05-28 | 2019-05-28 | A kind of highlands asphalt pavement construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965433A (en) * | 2019-10-14 | 2020-04-07 | 中冶交通建设集团有限公司 | Material transporting dump truck and construction method thereof |
| CN111320420A (en) * | 2020-03-27 | 2020-06-23 | 濮阳光大路桥混凝土有限公司 | Warm-mixed asphalt concrete for energy conservation and consumption reduction |
| CN111679638A (en) * | 2020-05-29 | 2020-09-18 | 安徽汉高信息科技有限公司 | Asphalt mixing production construction process monitoring system based on Internet of things |
| CN113564993A (en) * | 2021-08-31 | 2021-10-29 | 中交路桥北方工程有限公司 | High-modulus asphalt pavement construction method based on heavy-load traffic |
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| CN108978389A (en) * | 2018-06-13 | 2018-12-11 | 中国水利水电第九工程局有限公司 | A kind of construction method of bituminous pavement |
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| US20060165494A1 (en) * | 2002-04-30 | 2006-07-27 | Olson Michael A | Mobile barrier to control litter and wind |
| CN101418544A (en) * | 2008-10-16 | 2009-04-29 | 靳胜福 | Method for preventing wind, sand and snow at air port area of railway and road and mobile tunnel |
| CN102092988A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Warm-mixed asphalt mixture and preparation method thereof |
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Application publication date: 20190802 |