CN107777988A - A kind of airport concrete pavement crack fast repairing material and device - Google Patents
A kind of airport concrete pavement crack fast repairing material and device Download PDFInfo
- Publication number
- CN107777988A CN107777988A CN201711276670.6A CN201711276670A CN107777988A CN 107777988 A CN107777988 A CN 107777988A CN 201711276670 A CN201711276670 A CN 201711276670A CN 107777988 A CN107777988 A CN 107777988A
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- China
- Prior art keywords
- temperature
- magnesium phosphate
- controller
- concrete pavement
- agitator tank
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- 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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0966—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
- E01C23/0973—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Repair (AREA)
Abstract
The invention provides a kind of airport concrete pavement crack Quick repairing device and material using magnesium phosphate cement, motor connection temperature control agitator tank, small-sized booster pump, heat lamp in device, temperature control agitator tank has heater and heat sink, heater and heat sink are connected with controller, and by controller, the temperature inside the box is stirred in regulation temperature control, heat lamp is located at bottom of device, heating-up temperature can be adjusted by controller, small-sized booster pump is also connected with controller, regulation supercharging size.Sensitiveness feature of the present invention by using magnesium phosphate cement to temperature, the temperature after temperature and mending concrete during control magnesium phosphate cement stirring, during so that magnesium phosphate cement being repaired, with good flow degree, intensity quickly strengthens after repairing, reach the effect of airport concrete pavement Rapid-Repair, be applied equally to the big quick-setting and rapid-hardening cement of other thermal discharges.
Description
Technical field
The invention belongs to airfield pavement to repair field, is related to cement concrete material, and in particular to one kind can be in low temperature, negative
The fast repairing concrete material and device constructed under gentle normal temperature environment, available for airport concrete pavement, highway concrete
The crack such as road surface speed fettling job.
Background technology
Airfield pavement is chronically exposed in air, by environmental factor and the double action of load factor, low temperature and high temperature
The alternating of weather, the erosion of sleet, the repeated action of airplane wheel, the phenomenon for making airfield pavement cracking is likely to, it is special
It is not NORTHWEST CHINA area, day and night temperature is big, dry, wind speed is big, causes the temperature deformation inside pavement slab larger, accelerates
Road face surface moisture evaporation, it is easier to cause pavement slab desciccation crack and volume contraction, such as repaired, necessarily will not in time
Landing to aircraft causes potential safety hazard, so as to cause major accident, and except damaging phenomenon caused by newly-built road face
In addition, the pavement slab after repairing can also produce the damage of particularity, for the repairing on airport, have its special again
Property, in order to not influence the flight landing arrangement of aircraft as far as possible, the repairing of airfield pavement typically requires to carry out non-suspend air construction, construction
Time is typically preferably capable of constructing in 4 hours and terminated, and require that patching material can reach between 0 point to 6 points of morning
To some strength, meet the requirement of takeoff and landing.
In face of engineering and technical requirement, magnesium phosphate cement is more and more studied as patching material by scholars,
Because its it is fast hard, early it is strong, volume stability is good, the features such as being constructed under low temperature, there is its repairing bowl spares and more and more should
With.But magnesium phosphate cement is not applied in engineering on a large scale, because the setting time of magnesium phosphate cement is too short,
Be not suitable for large-area construction, when being added without retarder, magnesium phosphate cement rapid condensation in minutes, do not possess work completely
Property, by numerous studies, scholars have found that borax retarder can effectively extend the setting time of magnesium phosphate cement, 20 DEG C
When, the borax for adding 5% can be so that setting time extends to 13 minutes or so, and more boraxs can make setting time more
It is long, but retarder addition is more, the intensity of magnesium phosphate cement is lower, and the present invention is aiming in the spy of magnesium phosphate cement
Point, there is provided it is a kind of both to have ensured that magnesium phosphate cement intensity can also strengthen magnesium phosphate cement workability, using magnesium phosphate cement
Carry out the device of airport concrete pavement repairing.
The content of the invention
The purpose of the present invention is to be directed to deficiency of the prior art, there is provided a kind of magnesium phosphate cement is used for airport concrete road
The device and material of face Rapid-Repair so that magnesium phosphate cement can be effectively applied in the quick fix engineering of airport.
To achieve the above object, the invention discloses following technical scheme：
A kind of airport concrete pavement crack fast repairing material, the material are magnesium phosphate cement, with low temperature or subzero temperature control
The setting time of magnesium phosphate cement processed, the setting time of the lower magnesium phosphate cement of temperature is longer, magnesium phosphate cement specifically include as
Under component in terms of parts by weight：
In the further technical scheme of the present invention, the reheating powder is magnesite reheating powder or dead burned magnesia.
In the further technical scheme of the present invention, the calcining heat of the reheating powder is 1800 DEG C, when calcining and being incubated
Between be 18-20 hours after kiln discharge, dead burned magnesia content be 95%, density 3.30g/m3, specific surface area is 220 ㎡/kg.
Invention additionally discloses a kind of airport concrete pavement crack Quick repairing device, including temperature control agitator tank, motor, control
Device, small-sized booster pump, the first heat lamp, flowmeter, pressure gauge, feed pipe for mortar and shower nozzle processed；
The temperature control agitator tank is connected with motor, has heater and heat sink, heater in temperature control agitator tank
It is connected with heat sink by wire with temperature controller, by heat sink, the slow setting for realizing magnesium phosphate cement with low temperature is imitated
Fruit, temperature controller are arranged on outside temperature control agitator tank, by temperature controller, adjust temperature control agitator tank internal temperature, temperature control
Agitated kettle and cement mortar puddler are provided with agitator tank, stirs pot bottom hole, hole is provided with switch, switch connection control
Device processed, hole connect small-sized booster pump, and the pressure gauge and flowmeter are separately positioned on feed pipe for mortar, the connection spray of feed pipe for mortar end
Head, first heat lamp are connected respectively with motor, controller, and slurry can expose from stirring pot bottom, through small-sized increasing
Along feed pipe for mortar after press pump supercharging, spray from shower nozzle, then mend is carried out by the first heat lamp of bottom of device
Heating.
In the further technical scheme of the present invention, the temperature control agitator tank includes plus salt hopper, fluid reservoir plus powder leakage
Bucket plus sand hopper, heater, heat sink, cement mortar puddler, cleaning mouth, agitated kettle；Described plus salt hopper, liquid storage
Tank plus powder funnel plus sand hopper, stirring pot bottom are equipped with hole, and motor switch, motor switch connection control are equipped with hole
Device processed；The cleaning mouth is arranged on agitated kettle bottom sidewall.
In the further technical scheme of the present invention, the fluid reservoir is provided with scale.
In the further technical scheme of the present invention, the heater is the second heat lamp, and heat sink is cold
Solidifying pipe.
In the further technical scheme of the present invention, the temperature controller is the temperature controller with digital display function.
In the further technical scheme of the present invention, Universal wheel is provided with bottom of device.
The present invention has advantages below, can be by controlling agitator tank environment temperature, to realize that control magnesium phosphate cement condenses
The purpose of time, and there is heater after the completion of repairing, promote magnesium phosphate cement quick setting and rapid hardening, solve magnesium phosphate cement and coagulate
The shortcomings that tying the time, improves its workability, and can improve its early strength, realizes magnesium phosphate cement answering in engineering repairing
With, and because Universal wheel is arranged at bottom, there is very strong mobility, be applicable to repairing concrete crack, thin layer repairing and grouting
A variety of repairings such as repairing.
Brief description of the drawings
Describe the present invention in detail with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of temperature control agitator tank 1 in Fig. 1.
Wherein：
1- temperature control agitator tanks, 2- controllers, 3- motors, the small-sized booster pumps of 4-, the heat lamps of 5- first, 6- pressure gauges,
7- flowmeters, 8- feed pipe for mortar, 9- shower nozzles, 101- add salt hopper, 102- fluid reservoirs, and 103- adds powder funnel, and 104- adds sand hopper,
The heat lamps of 105- second, 106- condenser pipes, 107- cement mortar puddlers, 108- cleaning mouths.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
The core of the present invention is to provide the device and material that a kind of magnesium phosphate cement is used for airport concrete pavement Rapid-Repair
Material so that magnesium phosphate cement can be effectively applied in the quick fix engineering of airport.
A kind of airport concrete pavement crack fast repairing material disclosed by the invention, the material are magnesium phosphate cement, are used
The setting time of low temperature or subzero temperature control magnesium phosphate cement, the setting time of the lower magnesium phosphate cement of temperature is longer, magnesium phosphate water
Mud specifically includes the component in terms of parts by weight as follows：
In an embodiment of the present invention, including as follows the component in terms of parts by weight：
In another embodiment of the invention, including as follows the component in terms of parts by weight：
In another embodiment of the invention, including as follows the component in terms of parts by weight：
In an embodiment of the present invention, the reheating powder is magnesite reheating powder or dead burned magnesia.Reheating powder
Calcining heat be 1800 DEG C, calcining and soaking time be 18-20 hours after kiln discharge, dead burned magnesia content be 95%, density
For 3.30g/m3, specific surface area is 220 ㎡/kg.Setting time when its setting time is considerably longer than normal temperature under low temperature, after tested,
Under conditions of mixture ratios of the same race, when mix environment is 20 DEG C, final setting time is 13 points；When mix environment is 5 DEG C, final setting time is 1 small
When 16 divide；Mix environment be 0 DEG C when, final setting time be 2 hours 13 points；Mix environment be -5 DEG C when, final setting time be 4 hours with
On.
Dead burned magnesia is because a variety of condition elements such as the place of production, calcining heat, specific surface area obtain different, making magnesium phosphate water
The optimal proportion of mud is discrepant, and the wherein ratio of mud, cement mortar rate, retarder borax, the volume of flyash can be caused all to produce
Change, at present in various documents, the optimal proportion of each local dead burnt magnesite of scholar's experiment is also slightly different, so obtaining basis
The dead burnt magnesite situation used, specifically determines optimal proportion, and the proportioning of current most of magnesium phosphate cements is dead burned magnesia M and phosphorus
Acid dihydride potassium P P/M be 3/1 or 4/1, the ratio of mud between 0.14-0.20, retarder borax ratio between 3%-10%,
Flyash is between 10%-30%, between cement mortar rate 1/1 to 1/3.The magnesium phosphate cement that the dead burned magnesia of the present invention is configured
Optimal proportion is that P/M is 3/1, the ratio of mud 0.16, and borax B is the 5% of reheating M, flyash 10%, cement mortar rate 1/2.But
The optimal proportion of this not all dead burnt magnesite.Or will according to material concrete condition determine optimal proportion.
In an embodiment of the present invention, the reheating powder is magnesite reheating powder or dead burned magnesia.
Refer to Fig. 1-Fig. 2.A kind of airport concrete pavement crack Quick repairing device disclosed by the invention, present invention dress
The mix environment temperature of magnesium phosphate cement can be controlled by putting, and magnesium phosphate cement is had more preferable workability, and can repair
Mend temperature is improved after the completion of filling, accelerates magnesium phosphate cement quick setting and rapid hardening.The present apparatus include temperature control agitator tank 1, motor 3,
Controller 2, small-sized booster pump 4, the first heat lamp 5, flowmeter 7, pressure gauge 6, feed pipe for mortar 8 and shower nozzle 9；
The temperature control agitator tank 1 is connected with motor 3, has heater and heat sink, heating dress in temperature control agitator tank 1
Put and be connected with heat sink by wire with temperature controller, by heat sink, the slow setting of magnesium phosphate cement is realized with low temperature
Effect, temperature controller are arranged on outside temperature control agitator tank 1, by temperature controller, adjust the internal temperature of temperature control agitator tank 1,
Agitated kettle and cement mortar puddler 107 are provided with temperature control agitator tank 1, stirs pot bottom hole, hole is provided with switch, opened
Connection connects controller 2, and hole connects small-sized booster pump 4, and the pressure gauge 6 and flowmeter 7 are separately positioned on feed pipe for mortar 8, defeated
The end of pipe 8 connection shower nozzle 9 is starched, first heat lamp 5 is connected respectively with motor 3, controller 2, and slurry can be from stirring
Pot bottom exposes, and along feed pipe for mortar 8 after the supercharging of small-sized booster pump 4, is sprayed from shower nozzle 9, then passes through the first of bottom of device
Heat lamp 5 heats to mend.
In an embodiment of the present invention, the temperature control agitator tank 1 includes adding salt hopper 101, fluid reservoir 102 plus powder
Funnel 103 plus sand hopper 104, heater, heat sink, cement mortar puddler 107, cleaning mouth 108, agitated kettle；It is described
Add salt hopper 101, fluid reservoir 102 plus powder funnel 103 plus sand hopper 104, stirring pot bottom to be equipped with hole, be all provided with hole
There are motor switch, motor switch connection controller 2；The cleaning mouth 108 is arranged on agitated kettle bottom sidewall, and cleaning mouth 108 can
To open the residue for being used for clearing up in agitated kettle.
In an embodiment of the present invention, the fluid reservoir 102 is provided with scale.
In an embodiment of the present invention, the heater is the second heat lamp 105, and heat sink is condensation
Pipe 106.
In an embodiment of the present invention, the temperature controller is the temperature controller with digital display function.
In an embodiment of the present invention, it is provided with Universal wheel in bottom of device.
In the use of the present invention, first determining the scope that road face need to repair, dosage is estimated, shifts apparatus of the present invention onto specific bit
Put, the dosage for weighing dead burned magnesia, potassium dihydrogen phosphate, borax, water, sand etc. is calculated according to dosage, then respectively by title
Material, which pours into, to be added salt hopper 101, fluid reservoir 102 plus powder funnel 103, adds in sand hopper 104, is opened motor, is adjusted with controller 2
The temperature inside temperature control agitator tank 1 is saved, is such as maintained at 5 DEG C, then controller 2, which is opened, adds salt hopper 101 and fluid reservoir 102 to open
Close, be sufficiently stirred in temperature control agitator tank 1, then opened successively from controller 2 and add powder funnel 103, added sand hopper 104, (can press
《JTGE30-2005 highway engineering cement and cement concrete testing regulations》It is required that) stirring, after stirring terminates, beaten from controller 2
The wide open pass of the base apertures of temperature control agitator tank 1 and small-sized booster pump 4 are driven, slurry is from feed pipe for mortar 8 by finally being sprayed from shower nozzle 9, pressure
Table 6 can be easy to control the pressure of booster pump 4, and flowmeter 7 can be used to grasp the total amount for spraying slurry, after filling, from control
Device 2 opens heat lamp 5, adjusts temperature, such as 35 DEG C, mend is heated, makes magnesium phosphate cement material more quick setting
Hardening, early strength are higher.
Compared to the content introduced in background technology, temperature when device of the invention can be reacted by controlling magnesium phosphate cement
Spend, on the basis of proof strength, extend the setting time of magnesium phosphate cement, and having makes remedial cement accelerate what is coagulated soon firmly soon
Function, shorter time make face meet the requirements of takeoff and landing.
Described above is only the preferred embodiment of the present invention, rather than its limitations；It should be pointed out that although with reference to above-mentioned each
The present invention is described in detail embodiment, it will be understood by those within the art that, it still can be to above-mentioned each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part or all technical characteristic；And this
A little modifications and replacement, do not make the essence of corresponding technical scheme depart from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a kind of airport concrete pavement crack fast repairing material, it is characterised in that the material is magnesium phosphate cement, uses low temperature
Or the setting time of subzero temperature control magnesium phosphate cement, the setting time of the lower magnesium phosphate cement of temperature is longer, magnesium phosphate cement tool
Body includes the component in terms of parts by weight as follows：
2. a kind of airport concrete pavement crack fast repairing material according to claim 1, it is characterised in that described heavy
It is magnesite reheating powder or dead burned magnesia to burn powder.
3. a kind of airport concrete pavement crack fast repairing material according to claim 2, it is characterised in that described heavy
The calcining heat for burning powder is 1800 DEG C, and calcining and soaking time are kiln discharge after 18-20 hours, and dead burned magnesia content is 95%,
Density is 3.30g/m3, specific surface area is 220 ㎡/kg.
4. a kind of airport concrete pavement crack Quick repairing device, it is characterised in that including temperature control agitator tank, motor, control
Device, small-sized booster pump, the first heat lamp, flowmeter, pressure gauge, feed pipe for mortar and shower nozzle；
The temperature control agitator tank is connected with motor, has heater and heat sink, heater and drop in temperature control agitator tank
Warm device is connected by wire with temperature controller, and by heat sink, the retarding effect of magnesium phosphate cement is realized with low temperature, warm
Degree controller is arranged on outside temperature control agitator tank, by temperature controller, adjusts temperature control agitator tank internal temperature, temperature control agitator tank
It is interior to be provided with agitated kettle and cement mortar puddler, pot bottom hole is stirred, hole is provided with switch, and switch connects controller,
Hole connects small-sized booster pump, and the pressure gauge and flowmeter are separately positioned on feed pipe for mortar, feed pipe for mortar end connection shower nozzle, institute
State the first heat lamp to be connected respectively with motor, controller, slurry can expose from stirring pot bottom, through small-sized booster pump increase
Along feed pipe for mortar after pressure, spray from shower nozzle, then mend is heated by the first heat lamp of bottom of device.
A kind of 5. airport concrete pavement crack Quick repairing device according to claim 4, it is characterised in that the temperature
Controlling agitator tank includes adding salt hopper, fluid reservoir plus powder funnel plus sand hopper, heater, heat sink, cement mortar stirring
Bar, cleaning mouth, agitated kettle；Described plus salt hopper, fluid reservoir plus powder funnel plus sand hopper, stirring pot bottom are equipped with hole,
Motor switch, motor switch connection controller are equipped with hole；The cleaning mouth is arranged on agitated kettle bottom sidewall.
A kind of 6. airport concrete pavement crack Quick repairing device according to claim 5, it is characterised in that the storage
Flow container is provided with scale.
7. a kind of airport concrete pavement crack Quick repairing device according to claim 5, it is characterised in that described to add
Hot charging is set to the second heat lamp, and heat sink is condenser pipe.
A kind of 8. airport concrete pavement crack Quick repairing device according to claim 4, it is characterised in that the temperature
Degree controller is the temperature controller with digital display function.
9. a kind of airport concrete pavement crack Quick repairing device according to claim 4, it is characterised in that in device
Bottom is provided with Universal wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276670.6A CN107777988B (en) | 2017-12-06 | 2017-12-06 | Material and device for rapidly repairing cracks of airport concrete pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276670.6A CN107777988B (en) | 2017-12-06 | 2017-12-06 | Material and device for rapidly repairing cracks of airport concrete pavement |
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| Publication Number | Publication Date |
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| CN107777988A true CN107777988A (en) | 2018-03-09 |
| CN107777988B CN107777988B (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711276670.6A Active CN107777988B (en) | 2017-12-06 | 2017-12-06 | Material and device for rapidly repairing cracks of airport concrete pavement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409271A (en) * | 2019-06-19 | 2019-11-05 | 黑龙江省机场管理集团有限公司漠河机场分公司 | Airport concrete pavement thin layer repairing device and control evaluation method under low temperature environment |
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| CN110409271A (en) * | 2019-06-19 | 2019-11-05 | 黑龙江省机场管理集团有限公司漠河机场分公司 | Airport concrete pavement thin layer repairing device and control evaluation method under low temperature environment |
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| Publication number | Publication date |
|---|---|
| CN107777988B (en) | 2023-01-24 |
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