CN108149553A - Cement stabilizing crushed-gravel layer and its construction method - Google Patents
Cement stabilizing crushed-gravel layer and its construction method Download PDFInfo
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- CN108149553A CN108149553A CN201810016328.0A CN201810016328A CN108149553A CN 108149553 A CN108149553 A CN 108149553A CN 201810016328 A CN201810016328 A CN 201810016328A CN 108149553 A CN108149553 A CN 108149553A
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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
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
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Abstract
The present invention provides a kind of cement stabilizing crushed-gravel layer and its construction method, the wherein cement stabilizing crushed-gravel layer construction method includes：Raw material used in cement stabilizing crushed-gravel layer is mixed and stirred；Raw material after mixing and stirring is transported into scene to be onstructed；Raw material after this is mixed and stirred paves onto road surface to be paved；The road surface after paving is rolled, the compactness until being not less than design requirement.It facts have proved, by using cement stabilizing gravel layer disclosed by the invention and its construction method, easy construction, hidden danger of quality existing for not only compensating for layering making enhances the overall performance of base, improves the quality of base, also greatly improve the efficiency, speed of application was increased to 550m~600m/ days by original 250m~300m/ days, and was shortened the duration.
Description
Technical field
The invention belongs to technical field of building construction, specifically, the present invention relates to a kind of cement stabilizing crushed-gravel layer and
Its construction method.
Background technology
For China Higher grade road base layer based on semi-rigid sub-base material, most commonly used two kinds semi-rigid for many years
Material is cement stabilizing crushed-gravel and two ash stability crushed-gravel, but in recent years, due to fly ash gradually shortage, traffic expense
With rise, cause flyash cost increasingly soaring.In addition, compared with cement stabilized macadam, lime-fly-ash concrete construction complex process needs
Raw material types are more, and the structure after accomplishing is also easy to produce that wash away disease, early strength low, early curing is required it is more stringent,
Build expense is simultaneously not less than cement stabilized macadam.Therefore base is designed as water to more and more high-grade highways in actual use now
Mud Stabilized structure type.For a long time, the steady base of water (base) layer is paved always using layering and machine, and construction in layer making base
Layer makes it become two thin layer stress by whole stress, reduces base's integral strength, this is also cause road surface early damage one
A reason.Therefore disposable making, which rolls, makes two layers of construction become one layer of construction, thus greatly improves construction speed.This
Outside, also reduce the Coating combination being likely to result in during two layers of making layered rolling deal with improperly, to the breakage of making layer and
A series of problems, such as health, and making quality can be significantly improved, it is ensured that performance.Therefore, carry out the big thickness of disposable making
The one-off construction technical research for spending wide cut cement stabilized macadam base has important theory and practical value.
At present, cement stabilized macadam base uses construction in layer, the closely knit 100m or 150m long of lower floor's steady layer of water decking and rolling
Section after, uniformly spray cement mortar in lower layer top surface, be followed immediately by being paved upper strata, then grinding compacting with paver.Practice
It proves, following FAQs inevitably occurs in this construction method：
1st, considered as a whole one layer of base in Pavement Design, but core boring sampling illustrates in many engineerings, by applying twice
Cement stabilized macadam base is actually separate in many places after work, and design is caused not conform to the actual conditions, it is often more important that, make base
The globality of layer is affected, and causes base's stress unfavorable；
2nd, the conditioned time that cement stabilized soil material needs minimum 7 days after compaction moulding can just reach defined strong
Degree, two layers of construction just need health twice, and layer-built time interval such as maintenance measure is improper, and the volatilization of moisture easily causes matter
Hidden danger is measured, while Cement treated material is not suitable in rainy season construction or the difficulty compared in rainy season construction, this will greatly extend
Construction period；
3rd, lower layer top surface watering mud be easy to cause that spread is uneven, and spread quantity is excessive it is possible that interlayer stress shape
State, reduces bearing capacity of the base as an overall structure layer, and spread quantity deficiency does not have adhesive effect then；
4th, it in construction in layer during to upper strata decking and rolling, if road roller vibrates misoperation, will cause to have spread out
Spread lower floor's the second loosening and the destruction of grinding compacting；
5th, construction twice needs to repeat same process, causes the increase of artificial, mechanical input amount.
There are following difficult points in construction for disposable big thickness integral construction in practice of construction：
1st, big thickness, which paves, refers to disposably pave more than previous defined maximum gauge, and previous layering is replaced to pave.And
Traditional paver, road roller and construction technology obviously cannot meet the requirement that big thickness paves.
2nd, cement stabilized macadam base (individual layer construction) match ratio uses the framework compact type grading of vibration moulding method optimization,
Using big thickness one-off construction, whether the quality of material disclosure satisfy that requirement in original mix-design.
3rd, from construction continuity for, the big thickness wide cut of steady layer of water pave each meter needs quantity of material it is too big, store in a warehouse material
Whether material is sufficient, and whether haulage vehicle can ensure the continuity etc. that paves.
4th, since big thickness construction paving thickness is larger, if the compacting equipment big using power of shaking is hit, lateral force is also very big,
Therefore the easy be collapsed of edge, line style is also more difficult to control, is not easy to be pressed onto position or compacting.
5th, detection difficulty is larger, and cement stabilized macadam base mainly using sand replacement method, detects finite thickness, do not close still
In the research of the thick-layer cement stabilized macadam construction pressure degree detection method of disposable making, it is proposed that auxiliary based on whole detection
It is compared and analyzed with layered weighting method.
So quickly propelling with highway construction in recent years, traditional layering Paving Techniques have been unable to meet demand,
Big thickness once paves as the trend of development, thus needs to develop a kind of broken gravel of cement stabilizing for supporting layering Paving Techniques
Rock layers.
Invention content
The present invention is directed to the disadvantages mentioned above of existing mode, proposes a kind of cement stabilizing crushed-gravel layer and its construction method,
It is specific that Details as Follows：
The cement stabilizing crushed-gravel layer, including crushed-gravel and cement, which includes the first crushed-gravel, the second broken gravel
Stone, third crushed-gravel and the 4th crushed-gravel, a diameter of 16-31.5mm of first crushed-gravel, a diameter of 10- of the second crushed-gravel
16mm, a diameter of 5-10mm of third crushed-gravel, a diameter of 0-5mm of the 4th crushed-gravel, wherein
The mass percent that first crushed-gravel accounts for the crushed-gravel is 10%-20%, which accounts for the crushed-gravel
Mass percent for 30%-40%, mass percent which accounts for the crushed-gravel is 20%-30%, the 4th
The mass percent that crushed-gravel accounts for the crushed-gravel is the quality that 20%-30% and the cement account for the cement stabilizing crushed-gravel layer
Percentage is 3.5-6%.
Preferably, the dry density of the cement stabilizing crushed-gravel layer is 2-3g/cm3, water content 4-6%, intensity typical value
For 7-8%.
In addition, invention additionally discloses a kind of cement stabilizing crushed-gravel layer construction method, include the following steps：
Raw material used in cement stabilizing crushed-gravel layer is mixed and stirred；
Raw material after mixing and stirring is transported into scene to be onstructed；
Raw material after this is mixed and stirred paves onto road surface to be paved；
The road surface after paving is rolled, the compactness until being not less than design requirement, wherein
The raw material include crushed-gravel and cement, the crushed-gravel include the first crushed-gravel, the second crushed-gravel, third crushed-gravel and
4th crushed-gravel, a diameter of 16-31.5mm of first crushed-gravel, a diameter of 10-16mm of the second crushed-gravel, third crushed-gravel
A diameter of 5-10mm, a diameter of 0-5mm of the 4th crushed-gravel, wherein
The mass percent that first crushed-gravel accounts for the crushed-gravel is 10%-20%, which accounts for the crushed-gravel
Mass percent for 30%-40%, mass percent which accounts for the crushed-gravel is 20%-30%, the 4th
The mass percent that crushed-gravel accounts for the crushed-gravel is the quality that 20%-30% and the cement account for the cement stabilizing crushed-gravel layer
Percentage is 3.5-6%.
Preferably, the dry density of the cement stabilizing crushed-gravel layer is 2-3g/cm3, water content 4-6%, intensity typical value
For 7-8%.
Preferably, in the mixing process, cement dose and moisture content of the election weighing system to the raw material are configured with
Precisely measured.
Preferably, during the transport, the control of the travel speed of transport vehicle is in 35-45Km/h, so as to prevent transporting
It is dusty in the process；And
After scene to be onstructed is transported, forbid turning around in transporting vehicle-mounted working face paragraph, so as to avoid the occurrence of track wheel
Mark influences flatness.
Preferably, during this paves, the speed that paver paves is 1.5m/min, and frequency of vibrating is
25.4HZ。
Preferably, during this is rolled, it is wide that 1/2 wheel is overlapped using road roller；And
During this is rolled, which is detected using sand replacement method.
Preferably, during this is rolled, road roller first travels a distance when starting to walk, close to when rolling at section
Start vibrating compacting；And
At the end of the process rolled, which closes vibration, and travels 2-4 meters slowly to stop after eliminating remained shock
Surely.
Preferably, which further includes last health process, specially：
Road surface after construction with geotextiles is covered, and road surface is kept to moisten, wherein
The health process is greater than or equal to 7 days, and close traffic during the health, and no thoroughfare for vehicles.
It was verified that by using cement stabilizing gravel layer disclosed by the invention and its construction method, easy construction, not only
Hidden danger of quality existing for compensating for layering making, enhances the overall performance of base, improves the quality of base, also greatly improve
Efficiency, speed of application were increased to 550m~600m/ days by original 250m~300m/ days, and were shortened the duration.And pass through number
According to statistics, the new construction technology of the disposable decking and rolling of cement stabilized macadam base is per 1000m2Construction cost can be with than layering making
About 6833 yuan of saving fund.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
It obtains significantly or is recognized by the practice of the present invention.
Description of the drawings
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Significantly and it is readily appreciated that, wherein：
Fig. 1 is the flow diagram of a wherein embodiment for cement stabilizing gravel layer construction method of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein phase from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached drawing
The embodiment of description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless otherwise defined all terms used herein are (including technology art
Language and scientific terminology), there is the meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless by specific definitions as here, the meaning of idealization or too formal otherwise will not be used
To explain.
In recent years, with the development of road surface construction machinery equipment, the raising of performance, domestic some expressway constructions person into
It has gone bold trial, in construction of cement stable macadam base, has been carried out using big molding mode of decking and rolling of thickness
Construction, Preliminary Results are more satisfactory, but to be ground for there are no formation in the control of flatness, edge compacting mode and compactness
Study carefully, it is also necessary to be furtherd investigate.Disposable big thickness integral construction, is completed, big thickness is whole compared to original construction in layer
Construction has the advantage that：
1st, be conducive to improve base's globality.Traditional batch construction method is not close there are Coating combination, upper and lower interlayer point
From situations such as, the service life of road pavement base overall performance and structure generates harmful effect.It is constructed using big thickness, effectively
It solves the problems, such as interlaminar separation, with reference to untight, improves globality；
2nd, be conducive to shorten the construction period.Big thickness paves and can save sub-cloud preserving period, also a save stock, formwork,
It cleans, spray the preparations of construction times such as cement mortar；
3rd, be conducive to that base is avoided to generate earlier period damage.Due to large-tonnage vibrated roller and engineering in upper base layer construction
The rolling of haulage vehicle is easily caused to go to a grassroots level the earlier period damage of structure, and substructure spallation, intensity formation is caused to be not enough,
And big thickness construction is then carried out because it is disposable, it is entirely avoided the earlier period damage of base.
Below by embodiment, with reference to Fig. 1, cement stabilizing gravel layer of the present invention and its construction method is discussed in detail.
First, the invention discloses a kind of cement stabilizing gravel layers to include crushed-gravel and cement, which includes first
Crushed-gravel, the second crushed-gravel, third crushed-gravel and the 4th crushed-gravel, a diameter of 16-31.5mm of first crushed-gravel, second is broken
A diameter of 10-16mm of gravel, a diameter of 5-10mm of third crushed-gravel, a diameter of 0-5mm of the 4th crushed-gravel, wherein this
The mass percent that one crushed-gravel accounts for the crushed-gravel is 10%-20%, which accounts for the mass percent of the crushed-gravel
For 30%-40%, the mass percent which accounts for the crushed-gravel is 20%-30%, and it is broken that the 4th crushed-gravel accounts for this
The mass percent of gravel be 20%-30% and the cement to account for the mass percent of the cement stabilizing crushed-gravel layer be 3.5-
6%.
Wherein, the dry density of the cement stabilizing crushed-gravel layer is 2-3g/cm3, water content 4-6%, intensity typical value is
7-8%.
In addition, invention additionally discloses a kind of cement stabilizing crushed-gravel layer construction method, include the following steps：
S101：Raw material used in cement stabilizing crushed-gravel layer is mixed and stirred；
S102：Raw material after mixing and stirring is transported into scene to be onstructed；
S103：Raw material after this is mixed and stirred paves onto road surface to be paved；
S104：The road surface after paving is rolled, the compactness until being not less than design requirement, wherein
The raw material include crushed-gravel and cement, the crushed-gravel include the first crushed-gravel, the second crushed-gravel, third crushed-gravel and
4th crushed-gravel, a diameter of 16-31.5mm of first crushed-gravel, a diameter of 10-16mm of the second crushed-gravel, third crushed-gravel
A diameter of 5-10mm, a diameter of 0-5mm of the 4th crushed-gravel, wherein
The mass percent that first crushed-gravel accounts for the crushed-gravel is 10%-20%, which accounts for the crushed-gravel
Mass percent for 30%-40%, mass percent which accounts for the crushed-gravel is 20%-30%, the 4th
The mass percent that crushed-gravel accounts for the crushed-gravel is the quality that 20%-30% and the cement account for the cement stabilizing crushed-gravel layer
Percentage is 3.5-6%.
Preferably, the dry density of the cement stabilizing crushed-gravel layer is 2-3g/cm3, water content 4-6%, intensity typical value
For 7-8%.
Preferably, in the mixing process, cement dose and moisture content of the election weighing system to the raw material are configured with
Precisely measured.
Preferably, during the transport, the control of the travel speed of transport vehicle is in 35-45Km/h, so as to prevent transporting
It is dusty in the process；And
After scene to be onstructed is transported, forbid turning around in transporting vehicle-mounted working face paragraph, so as to avoid the occurrence of track wheel
Mark influences flatness.
Preferably, during this paves, the speed that paver paves is 1.5m/min, and frequency of vibrating is
25.4HZ。
Preferably, during this is rolled, it is wide that 1/2 wheel is overlapped using road roller；And
During this is rolled, which is detected using sand replacement method.
Preferably, during this is rolled, road roller first travels a distance when starting to walk, close to when rolling at section
Start vibrating compacting；And
At the end of the process rolled, which closes vibration, and travels 2-4 meters slowly to stop after eliminating remained shock
Surely.
Preferably, which further includes last health process, specially：
Road surface after construction with geotextiles is covered, and road surface is kept to moisten, wherein
The health process is greater than or equal to 7 days, and close traffic during the health, and no thoroughfare for vehicles.
Specifically, by a specific embodiment, to illustrate, content disclosed in this invention, those skilled in the art can
To know, following embodiment is merely possible to exemplary embodiment, and not as any restrictions of the present invention.
In construction, the preparation before construction is carried out first, specially：
1. doing raw material test by code requirement, the mix-design that gathers materials, gauged cement titration curve are carried out.
2. doing compaction test by code requirement determines maximum dry content, optimum moisture content, do unconfined compression test and determine
Best cement dose.
3. surveying setting-out：Surveying and locating restores center line, and the design width of structure sheaf, straightway every 20 are determined according to center line
Rice sets 1, and curved section 10 meters one marks the point with red paint and measures absolute altitude.Fixed steel wire line bracket is laid with meter mark according to pine
Height+working depth 10cm releases the construction baseline of standard, is supplied to 2 datum lines of paver, ensures the tensile stress of control line not
Less than 800N, and in road slot both sides, skirt piles and fender pile are set.
4. prepare and detect inspection equipment.
Then, specific work progress is carried out, specially：
(1) mix：Blending station is located on the right side of main line K4390+100, longest haul distance 6.3km.Mixture is mixed and stirred using Tai'an
It is macro to build MWB-600 type forced action type stabilized soil mixing plants, 5 collecting bins are configured and 2 cementing tanks, automatic water replenishing device add water, mix
It is functional with machine, meet continuous construction requirement, mix and stir ability as 600T/h, and equipped with election weighing system to a variety of materials into
The accurate metering of row, is mixed and stirred according to the match ratio that supervising engineer ratifies.During mixing and stirring, mixture is taken to prepare without lateral spacing
Compression strength test and cement dose, moisture content detection.In the mixing process, election weighing system is configured with to the raw material
Cement dose and moisture content precisely measured.
The raw material wherein prepared includes crushed-gravel and cement, which includes the first crushed-gravel, the second crushed-gravel, the
Three crushed-gravels and the 4th crushed-gravel, a diameter of 16-31.5mm of first crushed-gravel, a diameter of 10-16mm of the second crushed-gravel,
A diameter of 5-10mm of third crushed-gravel, a diameter of 0-5mm of the 4th crushed-gravel, wherein
The mass percent that first crushed-gravel accounts for the crushed-gravel is 10%-20%, which accounts for the crushed-gravel
Mass percent for 30%-40%, mass percent which accounts for the crushed-gravel is 20%-30%, the 4th
The mass percent that crushed-gravel accounts for the crushed-gravel is the quality that 20%-30% and the cement account for the cement stabilizing crushed-gravel layer
Percentage is 3.5-6%.
(2) it transports：Dumper under finished bin using it is forward and backward, in splicing mode three times, avoid mixture segregation.Weather
Hot and long-distance transportation or when being transported on national highway, mixture is covered using canvas, avoid mixture moisture content reduction,
It is unrestrained；Mixture transport vehicle opening portion near working face turns around or remotely turns around from working face, and reverse travel is extremely constructed
Scene, it is rigorous to turn around in working face paragraph, track wheelmark is avoided the occurrence of, influences flatness.Transport vehicle parked position：Transport vehicle
30 meters of spacing park waiting dischargings after into scene.Arrange sprinkling truck that often transport routes are carried out with watering moistening, vehicle traveling
Speed control is dusty when no thoroughfare for vehicles in 40km/h.During the transport, the travel speed control of transport vehicle
It is dusty in transportational process so as to prevent in 35-45Km/h.And
After scene to be onstructed is transported, forbid turning around in transporting vehicle-mounted working face paragraph, so as to avoid the occurrence of track wheel
Mark influences flatness.
(3) it paves：Scene is paved using a paver full width half maximum, is measured through scene, is obtained paver spreading speed
For 1.5m/min, vibrate frequency 25.4HZ when in the best state that paves.Mixture transport vehicle neutral gear at 20cm before paver
Parking, moves ahead by paver pushing tow, and avoiding hitting trickles down mixture.
2 people is arranged to check the working condition of paver and pine paving elevation at any time when paving, use aluminium every 10 meters during construction
Alloy ruler detects loose laying depth；The mixture for arranging 2 people cleaning that may trickle down before crawler belt；2 people is arranged to handle mixing after paver
Expect segregation phenomenon, the coarse aggregate nest of appearance is cleared up in time and fills up thin mixture, ensure that entire paving process is in controlled
State.After paving, surveying party tracking measurement detects pine paving elevation and prepares to calculate coefficient of loose laying.
(4) it rolls：After mixture laying in the range of overall with, road roller carries out 1/2 wrong wheel and in ladder from downside to high side
Shape rolls.Length 40m is rolled, it is well arranged to roll paragraph, and sets apparent boundary.Rolling the principle followed is：After first light
Weight shakes after first quiet, from low to high, by Bian Xiangzhong, it is wide that 1/2 wheel is overlapped when road roller rolls.In roller compaction process, detected with sand replacement method
Compactness, until being not less than the compactness of design requirement.During this is rolled, road roller first travels one section when starting to walk
Distance, close to starting vibrating compacting when rolling at section.And at the end of the process rolled, road roller closing is shaken
It is dynamic, and after travelling 2-4 meters to eliminate remained shock, slowly come to a complete stop.
The dry density of cement stabilizing crushed-gravel layer finally prepared is 2-3g/cm3, water content 4-6%, intensity representative
It is worth for 7-8%.
After completion, entire cement stabilizing crushed-gravel layer can also be repaired and be conserved, it is specific as follows：
1. longitudinal and transverse seam processing：Using vertical joint method, longitudinal joint line side in roadbed is installed high 50era steel forms and is fixed, and protects
It is neat to demonstrate,prove edge.During another width of making, by top chisel into step, dig it is neat after watering moistening, add watering mud, then row making.Transverse joint
The joining place of two job steps, after the end that preceding job step was rolled vertically excavates watering moistening, followed by making.
2. health：Health is covered using 200g geotextiles, and holding surface moistens.Preserving period must not be less than 7d.Preserving period
Between close traffic, no thoroughfare for vehicles.
It the above is only some embodiments of the present invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of cement stabilizing crushed-gravel layer, including crushed-gravel and cement, which is characterized in that the crushed-gravel includes the first broken gravel
Stone, the second crushed-gravel, third crushed-gravel and the 4th crushed-gravel, a diameter of 16-31.5mm of first crushed-gravel, the second broken gravel
A diameter of 10-16mm of stone, a diameter of 5-10mm of third crushed-gravel, a diameter of 0-5mm of the 4th crushed-gravel, wherein
The mass percent that first crushed-gravel accounts for the crushed-gravel is 10%-20%, and second crushed-gravel accounts for described broken
The mass percent of gravel is 30%-40%, and the mass percent that the third crushed-gravel accounts for the crushed-gravel is 20%-
30%, the mass percent that the 4th crushed-gravel accounts for the crushed-gravel is that 20%-30% and the cement account for the cement
The mass percent for stablizing crushed-gravel layer is 3.5-6%.
2. cement stabilizing crushed-gravel layer according to claim 1, which is characterized in that the cement stabilizing crushed-gravel layer is done
Density is 2-3g/cm3, water content 4-6%, intensity typical value is 7-8%.
3. a kind of cement stabilizing crushed-gravel layer construction method, which is characterized in that include the following steps：
Raw material used in cement stabilizing crushed-gravel layer is mixed and stirred；
Raw material after mixing and stirring is transported into scene to be onstructed；
Raw material after described mix and stir is paved onto road surface to be paved；
The road surface after paving is rolled, the compactness until being not less than design requirement, wherein
The raw material include crushed-gravel and cement, the crushed-gravel include the first crushed-gravel, the second crushed-gravel, third crushed-gravel and
4th crushed-gravel, a diameter of 16-31.5mm of first crushed-gravel, a diameter of 10-16mm of the second crushed-gravel, the broken gravel of third
A diameter of 5-10mm of stone, a diameter of 0-5mm of the 4th crushed-gravel, wherein
The mass percent that first crushed-gravel accounts for the crushed-gravel is 10%-20%, and second crushed-gravel accounts for described broken
The mass percent of gravel is 30%-40%, and the mass percent that the third crushed-gravel accounts for the crushed-gravel is 20%-
30%, the mass percent that the 4th crushed-gravel accounts for the crushed-gravel is that 20%-30% and the cement account for the cement
The mass percent for stablizing crushed-gravel layer is 3.5-6%.
4. cement stabilizing crushed-gravel layer construction method according to claim 3, which is characterized in that
The dry density of the cement stabilizing crushed-gravel layer is 2-3g/cm3, water content 4-6%, intensity typical value is 7-8%.
5. cement stabilizing crushed-gravel layer construction method according to claim 3, which is characterized in that
In the mixing process, it is configured with election weighing system and the cement dose and moisture content of the raw material is carried out precisely
Metering.
6. cement stabilizing crushed-gravel layer construction method according to claim 3, which is characterized in that
During the transport, the control of the travel speed of transport vehicle is in 35-45Km/h, so as to prevent dust in transportational process
It flies upward；And
After scene to be onstructed is transported, forbid turning around in transporting vehicle-mounted working face paragraph, so as to avoid the occurrence of track wheelmark, shadow
Ring flatness.
7. cement stabilizing crushed-gravel layer construction method according to claim 3, which is characterized in that
During described pave, the speed that paver paves is 1.5m/min, and frequency of vibrating is 25.4HZ.
8. cement stabilizing crushed-gravel layer construction method according to claim 3, which is characterized in that
During described roll, it is wide that 1/2 wheel is overlapped using road roller；And
During described roll, the compactness is detected using sand replacement method.
9. according to any cement stabilizing crushed-gravel layer construction methods of claim 3-8, which is characterized in that
During described roll, road roller first travels a distance when starting to walk, close to starting to vibrate when rolling at section
Compacting；And
At the end of the process rolled, the road roller closes vibration, and after travelling 2-4 meters to eliminate remained shock, slowly stops
Surely.
10. cement stabilizing crushed-gravel layer construction method according to claim 9, which is characterized in that
The construction method further includes last health process, specially：
Road surface after construction with geotextiles is covered, and road surface is kept to moisten, wherein
The health process is greater than or equal to 7 days, and close traffic during the health, and no thoroughfare for vehicles.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024197A (en) * | 2018-09-10 | 2018-12-18 | 山东铁正工程试验检测中心有限公司 | The method of disposable design compact-type water stability detritus underlayment, Basic Mixture Proportion |
| CN112195707A (en) * | 2020-09-27 | 2021-01-08 | 中交路桥建设有限公司 | Large-thickness wide-width water-stabilized layer paving construction method |
| CN112575652A (en) * | 2020-12-02 | 2021-03-30 | 中交二公局第三工程有限公司 | Construction process of sand type asphalt of central separation zone |
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Application publication date: 20180612 |