CN105332332B - A kind of grouting equipment built suitable for half-flexible pavement - Google Patents
A kind of grouting equipment built suitable for half-flexible pavement Download PDFInfo
- Publication number
- CN105332332B CN105332332B CN201510713520.1A CN201510713520A CN105332332B CN 105332332 B CN105332332 B CN 105332332B CN 201510713520 A CN201510713520 A CN 201510713520A CN 105332332 B CN105332332 B CN 105332332B
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- slurry case
- road surface
- slurry
- grouting equipment
- vavuum pump
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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
- E01C19/16—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 for applying or spreading liquid materials, e.g. bitumen slurries
- E01C19/17—Application by spraying or throwing
-
- 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
- E01C19/16—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 for applying or spreading liquid materials, e.g. bitumen slurries
- E01C19/17—Application by spraying or throwing
- E01C19/174—Apparatus with pump-discharge
Abstract
Equipment, specially a kind of grouting equipment built suitable for half-flexible pavement are added the present invention relates to a kind of liquid material for constructing road, the grouting equipment includes the vehicle frame with road wheel, and the vehicle frame, which is provided with, deposits slurry case and vavuum pump；Wherein, the described bottom for depositing slurry case is opening and presses close to road surface；The import of described vavuum pump is located at the road surface deposited in slurry case and press close to deposit under slurry case；Sealing gasket of the end face of the vacuum pump inlet provided with annular, the sealing gasket is close to road surface；The outlet of the vavuum pump is connected with depositing slurry case.Grouting equipment of the present invention instillation process perfect to a certain extent, reduce the design requirement of pouring material, not only have the advantages that rate of flooding is fast, ability of working continuously is strong, also reduce the defect inside ground surface material, improve the combination property of half-flexible pavement.
Description
Technical field
Equipment is added the present invention relates to a kind of liquid material for constructing road, is specially that a kind of added to road is combined
The equipment of liquid cementing material.
Background technology
Half-flexible pavement is directed in the big space mother asphalt mixture of open gradation, is poured into using cement as main component
Road surface formed by special slurry (hereinafter referred to as cement slurry).This road surface have higher than cement concrete pavement flexibility and
Higher than the rigidity of asphalt concrete pavement, the advantage on rigidity and flexible two kinds of road surfaces is taken into account, from Rut resistance, anti-passage, reduction
Significantly the performance on road surface is improved in terms of the stress relaxation ability of expansion joint and raising ground surface material.Half-flexible pavement
There is preferable high-temperature stability, low-temperature cracking-resistance and stability than flexible pavement；And it is effectively reduced rigid pavement
Disconnected plate, the disease such as ftracture, come to nothing.
The perfusion of cement slurry is step most important during half-flexible pavement is built, and it is directly affected after the completion of road surface
Every combination property.Traditional method for filling is to make cement slurry naturally osmotic into mother asphalt mixture using gravity, auxiliary
Help using plate vibrator to improve the permeability and seepage velocity of cement slurry.This method for filling still suffers from following shortcoming：
1st, using above-mentioned method for filling, the permeability of cement slurry is directly influenceed by Air Voids of Asphalt Mixtures, to make
Cement slurry, which can be penetrated into smoothly, often have to increase the voidage of asphalt in asphalt, this causes cement
The groundwater increment of rubber cement is increased, and the rigid components ratio on the dry and hard rear road surface of cement slurry is improved.Road surface overall performance is intended to rigidity
Road surface, cracking resistance reduction.
2nd, influenceed by the material property and traditional instillation process of half-flexible pavement, the design to pouring material is proposed sternly
The requirement of lattice：Both required that there is enough intensity, rigidity and humiture stability after cement slurry is dry and hard, required again after its aquation
With good mobile performance.Conflict is often there is between these indexs, in order to meet design requirement, engineering staff was designing
Generally require to add multiple additives in journey in cement slurry to balance the relation between each index, increase setting for cement slurry
Count difficulty and cost.
Although plate vibrator auxiliary pouring the 3, can be used, still inevitably exist in the space of asphalt
A little air can not be excluded, and cement slurry fully can not replace the air in space, cause the dry and hard rear material of cement slurry
There is the defects such as stomata in inside, destroy the integrality of material, and then influence the intensity of half-flexible pavement.
4th, because plate vibrator needs to stop time enough so that cement slurry is more preferable in all irrigating regions
Penetrate into asphalt, this causes above-mentioned method for filling speed of application slow, ability of working continuously.
The content of the invention
The technical problems to be solved by the invention are：A kind of grouting equipment built suitable for half-flexible pavement is provided, should
Grouting equipment instillation process perfect to a certain extent, reduces the design requirement of pouring material, not only with rate of flooding
Hurry up, the advantage that ability of working continuously is strong, also reduce the defect inside ground surface material, improve the comprehensive of half-flexible pavement
Energy.
The present invention solve above-mentioned technical problem technical scheme be：
A kind of grouting equipment built suitable for half-flexible pavement, the grouting equipment includes the vehicle frame with road wheel, institute
Vehicle frame is stated provided with depositing slurry case and vavuum pump；Wherein,
Described deposits the bottom of slurry case for opening and presses close to road surface；
The import of described vavuum pump is located at the road surface deposited in slurry case and press close to deposit under slurry case；The end of the vacuum pump inlet
Sealing gasket of the face provided with annular, the sealing gasket is close to road surface；The outlet of the vavuum pump is connected with depositing slurry case.
The grouting equipment course of work of the present invention is as follows：The grouting equipment is placed on and laid by asphalt
Into road surface on, the good cement slurry of prior aquation is poured into and deposits slurry case, open vavuum pump in asphalt mixture gap
Air is aspirated, and makes to form negative pressure in space, cement slurry sufficiently penetrates into asphalt under atmospheric pressure
Space in；When the cement slurry that there is continuous-stable the outlet for observing vavuum pump sprays, drawing grouting equipment edge needs to fill
The route movement of slurry can be achieved to work continuously.
The improvement project of the present invention is to be provided with filter screen in the described opening for depositing slurry bottom portion, the vavuum pump enters
The end face of mouth is located at the upper surface of filter screen, and annular sealing gasket is fixed on by the lower surface of filter screen on the end face of vacuum pump inlet.
The improvement project both can prevent the sandstone in asphalt to be inhaled into vavuum pump and damage the impeller of vavuum pump, can prevent from depositing again
The sandstone that cement slurry is mixed into slurry case flow to road surface.
The present invention has the advantages that：
1st, it is negative pressure due to aspirating the space in asphalt present invention uses vavuum pump, cement slurry is in gravity
With under the double action of atmospheric pressure can be easier and sufficiently penetrate into the space of asphalt, this undoubtedly reduces filling
The mobility requirement of material is noted, and then declines the design difficulty and cost of pouring material.
2nd, because the space in asphalt is negative pressure, therefore the permeability and seepage velocity of cement slurry substantially carry
Rise, undoubtedly improve the speed of application of grouting equipment of the present invention and ability of working continuously.Also, due to cement slurry infiltration
More fully, after the completion of ground surface material in the defect such as stomata it is few, significantly improve the intensity of ground surface material.
3rd, without to meet the voidage that the infiltration needs of cement slurry expand asphalt, improving semi-flexible road
The anti-crack ability in face.The grouting for small voidage half-flexible pavement cement slurry provides technique and supported simultaneously.
Brief description of the drawings
Fig. 1~3 are the structural representation of the specific embodiment of the present invention, wherein, Fig. 1 is front view, and Fig. 2 is vertical view
Figure, Fig. 3 is the A-A sectional views in Fig. 1.
Fig. 4 is that arrow signal asphalt mixture gap is hollow in the operation principle schematic diagram of the illustrated embodiment of Fig. 1~3, figure
The flow direction of gas and cement slurry.
Fig. 5~7 are the structural representation of another specific embodiment of the invention, wherein, Fig. 5 is front view (section view), Fig. 6
For top view, Fig. 7 is B-B sectional views in Fig. 6.
Embodiment
Example 1
Referring to Fig. 1~3, the grouting equipment in this example includes vehicle frame 1, is located on vehicle frame and deposits slurry case 2 and vavuum pump 3；Its
Described in slurry case 2 of depositing be the cuboid metal box that a top and bottom are opening, the metal box long 1.5m, wide 0.7m are high
0.5m, deposits inside slurry case 2 along its length that (model 2XZ-0.5 types, operating pressure scope is provided with three rotary-vane vaccum pumps 3
1.0×10-2~1.5 × 10-2Pa), three vavuum pumps 3 are fixed on by support 4 deposits the inner side of slurry case 2.Described vehicle frame 1 by
Slurry case 2 is deposited, two axletrees for depositing slurry case 2 two ends is located at and is constituted located at the wheel 1-1 of axle end.When the grouting equipment is put
When on road surface 6, the open side in slurry case 2 bottom is deposited described in formation and is pressed close to road surface 6；The import 3-1 of three described vavuum pumps 3
Press close to road surface 6, outlet 3-2 is directly open to be deposited in slurry case 2, and, it is provided between import 3-1 and road surface 6 by abrasive rubber
The annular sealing gasket 5 being made, the lower surface of the sealing gasket 5 is close to road surface 6.The open-mouth for depositing slurry case 2 bottom is covered with
The square hole metal screen 8 that one layer of aperture is 1mm × 1mm, the metal screen 8 is clamped in the import 3-1 and sealing gasket of vavuum pump 3
Between 5.Described slurry case 2 of depositing is provided with handle 7, and two of the handle 7, which is respectively welded at, deposits the slurry length direction tank wall of case 2 one
Two.
Below in conjunction with the operation principle of the Brief Description Of Drawings present invention：
Referring to Fig. 4 and with reference to Fig. 1~3, open vavuum pump 3 and the air in asphalt mixture gap is aspirated, make sky
Negative pressure is formed in gap, the cement slurry in slurry case 2 is deposited and penetrates into faster and sufficiently drip in the presence of gravity and atmospheric pressure
Among the space of blue or green compound；During the mobile present apparatus, vavuum pump 3 can be constantly by the air and cement gel in asphalt mixture gap
Slurry, which is pumped to, to be deposited in slurry case 2, and air is vaporized in the form of bubble in slurry case 2 is deposited, and cement slurry then continues from depositing slurry case 2 bottom
Portion is penetrated among the space of asphalt；So circulation, the air in asphalt mixture gap is constantly aspirated and discharged, put
Cement slurry is changed into, to reach the purpose of lifting cement slurry permeability and seepage velocity.
Example 2
Referring to Fig. 5~7, the vehicle frame 1 in this example is along its fortune on a flat vehicle frame with four wheel 1-1, vehicle frame 1
Dynamic direction, one is provided with a rotary-vane vaccum pump 3 (model 2XZ-0.4 types, operating pressure scope is 5.0 × 10-2~6.5
×10-2Pa), other end is provided with a rectangular through slot, and described deposits slurry case 2 in the groove, its shape and size and the phase of example 1
Together, the two for depositing slurry case 2 is welded on the both sides of groove by two connecting rods respectively, forms the open side in its bottom and is close to road surface 6.
Referring to Fig. 5~7, the suction flange of described vavuum pump 3 reaches the suction tube 3-3 deposited above slurry case 2 with one and is connected,
Outlet(discharge) flange reaches the delivery pipe 3-4 deposited inside slurry case 2 with one and is connected.The suction tube 3-3 is reached provided with three deposits slurry case 2
Internal branch pipe 3-5, each branch pipe 3-5 end is the opening on road surface 6, and this three openings constitute vavuum pump 3
Import, and, each open end face is provided with the annular sealing gasket 5 of polytetrafluoroethylmaterial material, and the lower surface of sealing gasket 5 is with depositing slurry
It is close on road surface 6 under case 2.The described open-mouth for depositing slurry case 2 bottom is covered with layer of metal filter screen 8, and the metal screen 8 is pressed from both sides
Hold between branch pipe 3-5 open end face and the upper surface of sealing gasket 5.
Example 3 (this example is to verify the experimental example of grouting equipment effect of the present invention)
1st, experiment purpose
Verify the grouting effect of grouting equipment described in embodiment 1.
2nd, test method
Take the ground surface material sample (hereinafter referred to as test sample) being in the milk using equipment of the present invention and shaken using classic flat-plate
The ground surface material sample (hereinafter referred to as control sample) of dynamic device grouting, carries out voidage investigation, splitting tensile test and bending examination respectively
Test.
3rd, sample is chosen
Sample is derived from the half-flexible pavement test section of the adopted section in Meizhou to Shantou highway footpath, is adopted respectively in the construction of the section
With grouting equipment of the present invention and the auxiliary grouting of classic flat-plate vibrator.Section at sampling applies what same stages were matched somebody with somebody
Asphalt and cement slurry.
In view of asphalt, the voidage of different parts can be slightly different after paving and rolling, and tests below takes
Test sample and each three of control sample, are repeatedly contrasted, with the reliability of guarantee test result.
4th, experimental result
The voidage of ground surface material is investigated after 4.1 grouting
The voidage after each sample grouting is measured with reference to vacuum negative pressure device and basket method.
Voidage is investigated after table 1 is in the milk
As shown in Table 1, the voidage after three control sample grouting is more than 4.0%, and average value is 4.43%；Three examinations
The voidage tested after sample grouting is below 2.4%, and average value is 2.13%.Contrast understands the infiltration of the cement slurry of test sample
Rate is higher, grouting effect more preferably, after the completion of there is a possibility that the defects such as core are less inside ground surface material.
4.2 tensile splitting strengths are tested
Foundation《Highway engineering pitch and Asphalt Mixture Experiment code》Asphalt splitting in JTG E-20 2011
The test method of (T 0716-2011) defined is tested, diameter 101mm, height 63.5mm marshal piece, experiment temperature is prepared
Spend for 25 DEG C, loading speed is l mm/min.Diametral compression test result see the table below 2：
The cleavage strength result of the test of table 2
As shown in Table 2, the indirect tensile strength average of control sample is 1.26MPa, and test sample indirect tensile strength average is
1.33MPa.Contrast understands that the indirect tensile strength of test sample is higher, shows that the grouting effect of semi-flexible material have impact on material
Pavement performance, using the semi-flexible material indirect tensile strength of auxiliary grouting equipment processing due to conventional grout means.
4.3 bend tests
Foundation《Highway engineering pitch and Asphalt Mixture Experiment code》Asphalt bending in JTG E-20 2011
The test method of (T 0715-2011) defined is tested, preparation size is 30mm × 35mm × 250mm experiment test specimen, experiment
Temperature is -10 DEG C, loading speed is 5mm/min, using the load mode of three-point bending.Result of the test see the table below 2：
The bend test result of table 3
As shown in Table 3, compared with conventional grouting means, draw strong using the bending resistance of the half-flexible pavement material of auxiliary grouting
Degree has increased, and bending-type panel increase, failure strain energy density is larger.From energy point of view, the crack resistance of test sample
Control sample can be better than.
5th, conclusion
Above result of the test shows, after the auxiliary provisions for grouting of design, the voidage reduction of semi-flexible material, effectively
The compactness for improving material.Mechanical test result shows, using the indirect of the semi-flexible material for aiding in provisions for grouting grouting
Tensile strength and breaking resistance are improved.Show that the half-flexible pavement designed auxiliary provisions for grouting can significantly improve half soft
The construction quality on property road surface.
Claims (2)
1. a kind of grouting equipment built suitable for half-flexible pavement, the grouting equipment includes the vehicle frame with road wheel, described
Vehicle frame, which is provided with, deposits slurry case and vavuum pump；Wherein,
Described deposits the bottom of slurry case for opening and presses close to road surface；
The import of described vavuum pump is located at the road surface deposited in slurry case and press close to deposit under slurry case；On the end face of the vacuum pump inlet
Sealing gasket provided with annular, the sealing gasket is close to road surface；The outlet of the vavuum pump is connected with depositing slurry case.
2. a kind of grouting equipment built suitable for half-flexible pavement according to claim 1, it is characterised in that described
Filter screen is provided with the opening for depositing slurry bottom portion, the end face of the vacuum pump inlet is located at the upper surface of filter screen, annular sealing gasket
On the end face that vacuum pump inlet is fixed on by the lower surface of filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510713520.1A CN105332332B (en) | 2015-10-27 | 2015-10-27 | A kind of grouting equipment built suitable for half-flexible pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510713520.1A CN105332332B (en) | 2015-10-27 | 2015-10-27 | A kind of grouting equipment built suitable for half-flexible pavement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105332332A CN105332332A (en) | 2016-02-17 |
| CN105332332B true CN105332332B (en) | 2017-07-14 |
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| CN201510713520.1A Active CN105332332B (en) | 2015-10-27 | 2015-10-27 | A kind of grouting equipment built suitable for half-flexible pavement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112252144B (en) * | 2020-10-29 | 2021-04-06 | 湖北天佑建筑工程有限公司 | Auxiliary pouring equipment for municipal road crack asphalt |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530981U (en) * | 2009-10-29 | 2010-07-21 | 刘廷国 | Suction plate of drainage asphalt pavement function restoration truck |
| CN101798792A (en) * | 2009-02-07 | 2010-08-11 | 维特根有限公司 | Be used for civil engineering machinery that the material spreader on soil or the basic material is paved |
| CN202849906U (en) * | 2012-09-27 | 2013-04-03 | 长安大学 | Asphalt concrete pavement vacuum compaction device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4469303B2 (en) * | 2005-04-04 | 2010-05-26 | 大成ロテック株式会社 | Pavement construction method |
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2015
- 2015-10-27 CN CN201510713520.1A patent/CN105332332B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798792A (en) * | 2009-02-07 | 2010-08-11 | 维特根有限公司 | Be used for civil engineering machinery that the material spreader on soil or the basic material is paved |
| CN201530981U (en) * | 2009-10-29 | 2010-07-21 | 刘廷国 | Suction plate of drainage asphalt pavement function restoration truck |
| CN202849906U (en) * | 2012-09-27 | 2013-04-03 | 长安大学 | Asphalt concrete pavement vacuum compaction device |
Non-Patent Citations (1)
| Title |
|---|
| 真空灌浆技术在公路施工中的应用;吴江;《华东公路》;20150620(第4期);73-74 * |
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