CN107299577B - A method for plugging the cracks in the cement concrete pavement of the airport - Google Patents
A method for plugging the cracks in the cement concrete pavement of the airport Download PDFInfo
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- CN107299577B CN107299577B CN201710594904.5A CN201710594904A CN107299577B CN 107299577 B CN107299577 B CN 107299577B CN 201710594904 A CN201710594904 A CN 201710594904A CN 107299577 B CN107299577 B CN 107299577B
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- 239000004568 cement Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000011236 particulate material Substances 0.000 claims abstract description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000002309 gasification Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract 2
- 239000002245 particle Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 229920000609 methyl cellulose Polymers 0.000 claims description 4
- 239000001923 methylcellulose Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000002562 thickening agent Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- WPUINVXKIPAAHK-UHFFFAOYSA-N aluminum;potassium;oxygen(2-) Chemical compound [O-2].[O-2].[Al+3].[K+] WPUINVXKIPAAHK-UHFFFAOYSA-N 0.000 claims 1
- 239000003822 epoxy resin Substances 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 238000005253 cladding Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 5
- 235000005121 Sorbus torminalis Nutrition 0.000 abstract description 4
- 244000152100 Sorbus torminalis Species 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 20
- 230000008439 repair process Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 229920005646 polycarboxylate Polymers 0.000 description 3
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 208000013668 Facial cleft Diseases 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 150000001669 calcium Chemical class 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a kind of methods for blocking cement concrete pavement of aerodrome crack, are slowly injected into liquid nitrogen first along crack propagation direction until completing the cleaning to crack by liquid nitrogen gasification full of crack；After spraying water filling standing to crack, cladding system is bonded in cement concrete pavement of aerodrome locating for crack, and solid particulate materials are sent into crack using process of pneumatic transmission, solid particulate materials, which are full of behind crack, to be filled the water using water mists mode to crack position, solid particulate materials expansion curing after 180min-200min, cement concrete pavement of aerodrome is polished with concrete sanding machine and scribes anti-skid chequer, that is, is blocked and completed a crack.It is examined through practical application, method of the invention is able to achieve the comprehensive closure in cement concrete pavement of aerodrome crack, it can complete the reparation to microscopic checks, plugging effect is more preferable, crack sealing ratiod improves 50% or more, it ensures takeoff and landing safety, extends airfield pavement service life 30%-50%, there is wide applicability.
Description
Technical field
The present invention relates to a kind of method for blocking crack, especially a kind of side for blocking cement concrete pavement of aerodrome crack
Method.
Background technique
The road face structure type of Chinese Airport runway is relatively simple, and cement concrete road surface structure accounts for about 95%.It runs on airport
The normal use in road depends primarily on its structural behaviour, and with the continuous growth of air transportation amount, aircraft loads are continuously increased,
Aircraft day Sortie it is continuous soaring, also increasing to the load action of airfield runway, the coupling of temperature factor is made in addition
With the development of airfield runway cement concrete road surface internal crack generates various forms of destructions, is mainly shown as: crack, change
Shape, Seam failure and damaged surfaces.In order to ensure takeoff and landing safety and extend airfield runway service life, needs mixed to cement
Solidifying soil surface structure carries out reinforcement or functional rehabilitation, to improve face service performance.
Currently, the common method for blocking cement concrete pavement of aerodrome crack mainly has three classes both at home and abroad: 1. using nothing
Machine material blocks crack, and main body is cement, and essence is a kind of cementitious material.Thus, effect of the inorganic repair materials to crack
Mechanism is mainly to rely on the bonding osmosis of hydrolysis product of cement, is bonded together cement slurry with old concrete, plays
Sealing, the purpose for repairing crack；Inorganic repair materials also have no small defect, such as adhesion strength deficiency, are easy in biggish punching
It hits and de- split easily occurs under power；It will lead to raising for face after reparation, influence the planarization in face；In terms of concrete castability with other classes
There are also a certain distance for type repair materials, can only generally be injected into gap or crack of the diameter or width greater than 0.2mm, can not
It completes to the microscopic checks reparation between 0.1mm-0.2mm.2. blocking crack, organic polymer material using high-molecular organic material
Material is after pouring into facial cleft seam by polymer, polymerization reaction to occur in the curing process, passes through chemical bond force or Van der Waals force
Aggregate is bonded together, to achieve the purpose that filling, blocking concrete crack；The initial viscosity of organic material compared with
It is low, but the problem of bringing is that solidification post-shrinkage ratio is also big, generally 20% or so, is easy to happen and repairs between matrix concrete
Disengaging or generate biggish internal stress and make repairing failure.3. being sealed using the compound polymer material of organic material and inorganic material
Stifled crack, can wherein form the polymeric web of one layer of crosslinking, be adhered on mortar, and then prevent fine fisssure in cement-based material
Line extension；Polymer beads can be with biggish hole a part of in filling concrete mortar, and changes pore structure, enhances glue
Gel material slurry and old sand are starched and the adhesiveness of concrete, but cannot effectively block minute fissure, buries to takeoff and landing
Lower security risk.
Summary of the invention
In view of the above-mentioned problems of the prior art, the object of the present invention is to provide a kind of closure airport cement concrete roads
The method of facial cleft gap, adhesion strength is good, can complete reparation to microscopic checks；It is low to solidify post-shrinkage ratio, can be realized airport
The comprehensive closure in cement concrete road surface crack, guarantees the safety of takeoff and landing.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of closure cement concrete pavement of aerodrome crack
Method, include the following steps:
(1) cement concrete pavement of aerodrome crack situation is investigated using fracture width detector comprehensively, along crack propagation
Direction is slowly injected into liquid nitrogen until full of crack, completes the cleaning to crack by liquid nitrogen gasification；
(2) it after being filled the water using spray regime into cement concrete pavement of aerodrome crack, stands；
(3) cladding system is bonded in cement concrete pavement of aerodrome locating for crack using adhesive glue, forms crack envelope
Solid particulate materials are sent into crack, until solid particulate materials by stifled relatively closed space using process of pneumatic transmission
Full of crack；
(4) this section of cladding system is removed, is filled the water using water mists mode to crack position, is seeped until water is no longer lower；
(5) it is mixed to polish Airport Cement with concrete sanding machine for solid particulate materials expansion curing after 180min-200min
Solidifying soil surface simultaneously scribes anti-skid chequer, achievees the purpose that block cement concrete pavement of aerodrome crack；
(6) according to cement concrete pavement of aerodrome fractured zones situation, step (3)-(5) are repeated, until having blocked all
Crack.
As a preferred scheme of the invention, spray regime is to cement concrete pavement of aerodrome in the step (2)
The water supply pressure injected in crack is 0.4MPa-0.8MPa, and time of repose is 15min-20min after water filling.It can using the parameter
Water contacts more abundant with fracture surface after being filled the water with guarantee.
Preferably, the device that the pneumatic conveying of the step (3) is used is solid particulate materials delivery pipe, solid particle material
Material conveying tube one end is passed through in cladding system, the external solid particle conveying device of the other end.Open external solid particle conveying
Device, can by solid particulate materials delivery pipe into cladding system conveying solid substance granular materials.
The cladding system of step (3) can be stainless steel cover or other lids with constant weight and intensity, can incite somebody to action
Solid particulate materials limit wherein, prevent solid particulate materials from dispersing in air, guarantee to block efficiency, reduce waste.It is excellent
Choosing, the cladding system of the step (3) is transparent rubber lid, transparent rubber cap surface be it is soft, be easy with locating for crack
Cement concrete pavement of aerodrome bonding, and can also be observed that the progress that solid particulate materials are filled through transparent rubber lid.
Preferably, in order to guarantee atomizing effect, the device that the water mists mode of the step (4) is used is water atomizer(-iser).
Preferably, the solid particulate materials in the step (3) include: PO52.5 class g cement 36-40 mass parts, high suction
Water-base resin 15-19 mass parts, epoxy curing agent 10-15 mass parts, methylcellulose thickener 8-12 mass parts, sulphur aluminium
Sour calcium class cement expansive material 6-8 mass parts, polycarboxylate high performance water-reducing agent 6-8 mass parts, potassium aluminate accelerator 4-6 mass
Part and blast-furnace cinder 3-5 mass parts.The solid particulate materials setting time is short, and water absorption rate is greater than 150 times, can sufficiently melt with water
It closes, is conducive to coming into full contact with for solid particulate materials and Airport Cement concrete fracture surface below；Natural expansion rate is greater than
15%, it avoids and solidifies after-contraction and lead to and repair disengaging between matrix concrete or generate biggish internal stress and make to repair to lose
It loses, and plugging material expands in relatively closed crevice space, effect with pressure is generated in crevice space, can greatly enhance
Compactness after plugging material expansion；With strong cohesive force, and compression strength is greater than 70MPa, and flexural strength is greater than 9MPa, resists
Intensity is cut greater than 6MPa, so that there is higher comprehensive strength after final repairing.
Preferably, it in order to guarantee that solid particulate materials are able to enter small crack, smoothly realizes between 0.1mm-0.2mm
Microscopic checks reparation, the solid particulate materials partial size be -250 mesh of 180 mesh.
Preferably, the flow that the water mists mode of the step (4) fills the water is 50L/min-100L/min, and operating pressure is
1.4MPa-1.9MPa can ensure coming into full contact with for water and solid particulate materials using the flow appropriate and operating pressure, make
Obtaining solid particulate materials can quickly water swelling solidification.
Liquid nitrogen gasification process of the present invention assists in removing the dust of fracture surface to the cleaning in crack, enhancing plugging material with
The cohesive force of fracture surface；Crack uses spray regime to inject water into crack before blocking, it is ensured that water sufficiently connects with fracture surface
Touching is more advantageous to coming into full contact with for solid particulate materials and Airport Cement concrete fracture surface below；It is solid by pneumatic conveying
Body granular materials enters crack, can enter extremely small crack, and the closure in comprehensive completion crack effectively improves crack envelope
Stifled rate smoothly realizes the microscopic checks reparation between 0.1mm-0.2mm.Solid particulate materials use water mists mode after having blocked
Water filling, sufficiently absorbs water, crack plugging effect is more preferably convenient for solid particulate materials.The solid particulate materials of use have appropriateness expansion
Property, avoiding cure shrinkage causes to be detached between matrix.
It is examined through practical application, the present invention is able to achieve the comprehensive closure in cement concrete pavement of aerodrome crack, can be complete
The reparation of pairs of microscopic checks, plugging effect is more preferable, and crack sealing ratiod improves 50% or more, it is ensured that takeoff and landing safety,
Extend airfield pavement service life 30%-50%, there is wide applicability.
Detailed description of the invention
Fig. 1 is the schematic diagram that the present invention blocks cement concrete road surface crack.
In figure, 1. cement concrete pavement of aerodrome, 2. cracks, 3. cladding systems, 4. solid particulate materials, 5. solid particles
Material delivery tubes.
Specific embodiment
Below with reference to embodiment, invention is further described in detail.
Embodiment 1
The method for blocking cement concrete pavement of aerodrome crack, includes the following steps:
(1) 2 situation of crack for investigating cement concrete pavement of aerodrome 1 comprehensively using fracture width detector, instructs crack 2
The formulation of closure scheme.Liquid nitrogen is slowly injected into along the propagation direction in crack 2 until passing through liquid nitrogen gasification completion pair full of crack
The cleaning in crack；
(2) it is filled the water into the crack of cement concrete pavement of aerodrome 12 using spray regime, course of injection is to Airport Cement
The hydraulic pressure filled the water in the crack 2 of concrete road surface 1 is 0.4MPa, time of repose 15min；
(3) solidify adhesive glue with strength natural and cladding system 3 is bonded in Airport Cement concrete road locating for crack 2
On face 1, the relatively closed space that crack 2 blocks is formed, 5 one end of solid particulate materials delivery pipe is passed through in cladding system 3,
Solid particulate materials 4 are sent into crack by the external solid particle conveying device of the other end using the method for pneumatic conveying, until solid
Body granular materials 4 is full of crack 2；Cladding system 3 used is transparent rubber lid, is observed that solid by transparent rubber lid
The progress that granular materials 4 is filled.
(4) this section of crack plugging device 3 is removed, is filled the water using water atomizer(-iser) to 2 position of crack, the stream of water atomizer(-iser) water filling
Amount is 50L/min, operating pressure 1.4MPa, until the no longer lower infiltration of water, it is ensured that water sufficiently melts with solid particulate materials 4
It closes；
(5) expansion curing after 180min of solid particulate materials 4, with concrete sanding machine to Airport Cement concrete road
Anti-skid chequer is scribed in face 1, achievees the purpose that the crack 2 for blocking cement concrete pavement of aerodrome 1；
(6) according to the distribution situation in crack 2, step (3)-(5) are repeated, until having blocked all cracks.
It is examined through practical application, the present invention is able to achieve the comprehensive closure in cement concrete pavement of aerodrome crack, blocks effect
Fruit is good, and crack sealing ratiod improves 50%, it is ensured that takeoff and landing safety extends airfield pavement service life 30%, has extensive
Practicability.
Embodiment 2
The method for blocking cement concrete pavement of aerodrome crack, includes the following steps:
(1) 2 situation of crack for investigating cement concrete pavement of aerodrome 1 comprehensively using fracture width detector, instructs crack 2
The formulation of closure scheme.Liquid nitrogen is slowly injected into along the propagation direction in crack 2 until passing through liquid nitrogen gasification completion pair full of crack
The cleaning in crack；
(2) it is filled the water into the crack of cement concrete pavement of aerodrome 12 using spray regime, course of injection is to Airport Cement
The hydraulic pressure filled the water in the crack 2 of concrete road surface 1 is 0.8MPa, time of repose 20min；
(3) solidify adhesive glue with strength natural and cladding system 3 is bonded in Airport Cement concrete road locating for crack 2
On face 1, the relatively closed space that crack 2 blocks is formed, by 5 one end Jie cladding system 3 of solid particulate materials delivery pipe,
Solid particulate materials 4 are sent into crack by the external solid particle conveying device of the other end using the method for pneumatic conveying, until solid
Body granular materials 4 is full of crack 2；Cladding system 3 used is stainless steel cover.
(4) this section of crack plugging device 3 is removed, is filled the water using water mists mode to 2 position of crack, water mists mode fills the water
Flow be 100L/min, operating pressure 1.9MPa, until water no longer it is lower seep until, it is ensured that water and solid particulate materials 4
Sufficiently fusion；
(5) expansion curing after 200min of solid particulate materials 4, with concrete sanding machine to Airport Cement concrete road
Anti-skid chequer is scribed in face 1, achievees the purpose that the crack 2 for blocking cement concrete pavement of aerodrome 1；
(6) according to the distribution situation in crack 2, step (3)-(5) are repeated, until having blocked all cracks.
It is examined through practical application, the present invention is able to achieve the comprehensive closure in cement concrete pavement of aerodrome crack, blocks effect
Fruit is good, and crack sealing ratiod improves 60%, it is ensured that takeoff and landing safety extends airfield pavement service life 50%, has extensive
Practicability.
In above-mentioned two embodiment, the solid particulate materials that embodiment 1 is used include: 52.5 class g cement of PO, 36 mass
Part, 15 mass parts of super absorbent resin, 10 mass parts of epoxy curing agent, 8 mass parts of methylcellulose thickener, sulphur aluminic acid
6 mass parts of calcium class cement expansive material, 6 mass parts of polycarboxylate high performance water-reducing agent, 4 mass parts of potassium aluminate accelerator and blast furnace
3 mass parts of slag.
The solid particulate materials that embodiment 2 is used include: 52.5 class g cement of PO, 40 mass parts, super absorbent resin 19
Mass parts, 15 mass parts of epoxy curing agent, 12 mass parts of methylcellulose thickener, calcium sulphoaluminate class cement expansive material
8 mass parts, 5 mass parts of 8 mass parts of polycarboxylate high performance water-reducing agent, 6 mass parts of potassium aluminate accelerator and blast-furnace cinder.
Performance measurement is carried out to the solid particulate materials of embodiment 1,2.Shaping grinding apparatus is placed on after each component is sufficiently mixed
In, enough water is added, records initial volume and setting time.Sample shaping and demoulding is placed in standard curing room the standard that carries out
Maintenance, condition are as follows: 20 DEG C ± 2 DEG C of temperature, 95% or more relative humidity conserve 28 days.Nature expansion rate is calculated, test specimen is polished
For 100mm × 100mm × 100mm cube, mechanical property test is then carried out.Correlated performance test result is shown in Table 1.
The performance measurement of 1 solid particulate materials of table
As shown in Table 1, plugging material setting time of the invention is short, is able to satisfy cement concrete pavement of aerodrome and quickly repairs
Demand；Natural expansion rate is greater than 15%, avoids and solidifies after-contraction and lead to and repair disengaging or production between matrix concrete
Raw biggish internal stress makes repairing failure, and plugging material expands in relatively closed crevice space, produces in crevice space
Green tape presses effect, the compactness after capable of greatly enhancing plugging material expansion, and effectively closure microscopic checks, plugging effect is more preferable；
Have good shearing strength, flexural strength, compression strength, tensile strength excellent after solidification, and there is good adhesion strength,
It is able to satisfy the mechanics and reparation demand of the closure in cement concrete pavement of aerodrome crack.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594904.5A CN107299577B (en) | 2017-07-20 | 2017-07-20 | A method for plugging the cracks in the cement concrete pavement of the airport |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594904.5A CN107299577B (en) | 2017-07-20 | 2017-07-20 | A method for plugging the cracks in the cement concrete pavement of the airport |
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| Publication Number | Publication Date |
|---|---|
| CN107299577A CN107299577A (en) | 2017-10-27 |
| CN107299577B true CN107299577B (en) | 2019-04-23 |
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| CN201710594904.5A Active CN107299577B (en) | 2017-07-20 | 2017-07-20 | A method for plugging the cracks in the cement concrete pavement of the airport |
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| CN108917815B (en) * | 2018-04-03 | 2020-11-06 | 徐州工程学院 | A pipe body structure for simulating pipelines with cracks in airport pavement |
| CN111472226A (en) * | 2020-04-29 | 2020-07-31 | 无锡市政设计研究院有限公司 | non-Newtonian fluid pillow bag and method for temporarily repairing pavement by using same |
| CN119797822B (en) * | 2024-12-18 | 2025-11-28 | 浙江大学 | Mist vaporization repair material and repair method for concrete micro-cracks |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295311A (en) * | 1978-12-01 | 1981-10-20 | Tatis Plasttatningar Ab | Expansion joint element |
| CN102704367A (en) * | 2012-07-02 | 2012-10-03 | 河南万里路桥集团有限公司 | Road reflection crack welding material and construction process thereof |
| CN204589755U (en) * | 2015-03-31 | 2015-08-26 | 杜金华 | Pavement crack repair structure |
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- 2017-07-20 CN CN201710594904.5A patent/CN107299577B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295311A (en) * | 1978-12-01 | 1981-10-20 | Tatis Plasttatningar Ab | Expansion joint element |
| CN102704367A (en) * | 2012-07-02 | 2012-10-03 | 河南万里路桥集团有限公司 | Road reflection crack welding material and construction process thereof |
| CN204589755U (en) * | 2015-03-31 | 2015-08-26 | 杜金华 | Pavement crack repair structure |
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