CN107299577A - A kind of method for blocking cement concrete pavement of aerodrome crack - Google Patents
A kind of method for blocking cement concrete pavement of aerodrome crack Download PDFInfo
- Publication number
- CN107299577A CN107299577A CN201710594904.5A CN201710594904A CN107299577A CN 107299577 A CN107299577 A CN 107299577A CN 201710594904 A CN201710594904 A CN 201710594904A CN 107299577 A CN107299577 A CN 107299577A
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- crack
- aerodrome
- cement concrete
- concrete pavement
- particulate materials
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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
- 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]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic 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 method for blocking cement concrete pavement of aerodrome crack, liquid nitrogen is slowly injected into first along crack propagation direction until full of crack, the cleaning to crack is completed by liquid nitrogen gasification；After being stood to crack injection water filling, cladding system is bonded in the cement concrete pavement of aerodrome residing for crack, and sent into solid particulate materials in crack using process of pneumatic transmission, solid particulate materials, which are full of behind crack, uses water mists mode to the water filling of crack position, solid particulate materials expansion curing after 180min 200min, cement concrete pavement of aerodrome is polished with concrete sanding machine and anti-slip veins are scribed, i.e. closure completes a crack.Examined through practical application, the method of the present invention can realize the comprehensive closure in cement concrete pavement of aerodrome crack, the reparation to microscopic checks can be completed, plugging effect is more preferable, crack sealing ratiod improves more than 50%, it ensure that takeoff and landing safety, extension airfield pavement service life 30% 50%, with wide applicability.
Description
Technical field
The present invention relates to a kind of method in closure crack, particularly a kind of side for blocking cement concrete pavement of aerodrome crack
Method.
Background technology
The road face structure type of Chinese Airport runway is relatively simple, and cement concrete road surface structure accounts for 95%.Run on airport
Road it is normal using its structural behaviour is depended primarily on, with the continuous growth of air transportation amount, aircraft loads are continuously increased,
Constantly riseing for aircraft day Sortie, also increasing to the load action of airfield runway, the coupling of temperature factor in addition is made
With the development of airfield runway cement concrete road surface internal crack produces various forms of destructions, it is mainly shown as：Crack, change
Shape, Seam failure and damaged surfaces.In order to ensure takeoff and landing safety and extension airfield runway service life, it is necessary to mixed to cement
Solidifying soil surface structure carries out reinforcement or functional rehabilitation, to improve face performance.
At present, the method in the closure cement concrete pavement of aerodrome crack commonly used both at home and abroad mainly has three classes：1. nothing is used
Machine material blocks crack, and its main body is cement, and essence is a kind of binder materials.Thus, effect of the inorganic repair materials to crack
Mechanism is mainly the bonding osmosis by hydrolysis product of cement, cement slurry is bonded together with old concrete, plays
Sealing, the purpose for repairing crack；Inorganic repair materials also have no small defect, and such as adhesion strength is not enough, is easily rushed in larger
Hit and de- split easily occurs under power；Raising for face can be caused after reparation, the planarization in road face is influenceed；With other classes in terms of concrete castability
Type repair materials also have a certain distance, can only typically be injected into space of the diameter or width more than 0.2mm or crack, it is impossible to
Complete to the microscopic checks reparation between 0.1mm-0.2mm.2. crack, organic polymer material are blocked using high-molecular organic material
Material is to be poured into by polymer after facial cleft seam, and polymerisation occurs in the curing process, passes through chemical bond force or Van der Waals force
Aggregate is bonded together, so as to reach filling, the purpose in blocking concrete crack；The initial viscosity of organic material compared with
It is low, but be that solidification post-shrinkage ratio is also big the problem of bring, typically 20% or so, easily occur and repair between matrix concrete
Disengaging or produce larger internal stress and make repairing failure.3. the polymeric material being combined using organic material and inorganic material is sealed
Stifled crack, can wherein form the polymeric web of one layer of crosslinking, stick on mortar, and then prevent fine fisssure in cement-based material
Line extends；Polymer beads can be with a part of larger hole in filling concrete mortar, and changes pore structure, enhances glue
The adhesiveness of gel material slurry and old sand slurry and concrete, but minute fissure can not be effectively blocked, buried to takeoff and landing
Lower potential safety hazard.
The content of the invention
In view of the above-mentioned problems of the prior art, blocking airport cement concrete road it is an object of the invention to provide one kind
The method of facial cleft gap, adhesion strength is good, can complete the reparation to microscopic checks；Solidify post-shrinkage ratio low, airport can be realized
The comprehensive closure in cement concrete road surface crack, it is ensured that the safety of takeoff and landing.
To achieve the above object, the technical solution adopted by the present invention is：One kind closure cement concrete pavement of aerodrome crack
Method, comprise 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, the cleaning to crack is completed by liquid nitrogen gasification；
(2) after water filling, stood into cement concrete pavement of aerodrome crack using spray regime；
(3) cladding system is bonded in cement concrete pavement of aerodrome residing for crack using adhesive glue, forms crack envelope
Stifled relatively closed space, is sent into solid particulate materials in crack using process of pneumatic transmission, until solid particulate materials
Full of crack；
(4) this section of cladding system is removed, using water mists mode to the water filling of crack position, until water no longer oozes down；
(5) solid particulate materials expansion curing after 180min-200min, Airport Cement is polished with concrete sanding machine and is mixed
Solidifying soil surface simultaneously scribes anti-slip veins, reaches the purpose in closure cement concrete pavement of aerodrome crack；
(6) according to cement concrete pavement of aerodrome fractured zones situation, repeat step (3)-(5), until having blocked all
Crack.
As the preferred scheme of the present 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.Can using the parameter
To ensure that water contacts more abundant with fracture surface after water filling.
It is preferred that, the device that the Geldart-D particle 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, you 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 there is constant weight and the lid of intensity, can be by
Solid particulate materials are limited wherein, prevent solid particulate materials from dispersing in air, it is ensured that closure efficiency, reduced and wasted.It is excellent
Choosing, the cladding system of the step (3) is transparent rubber lid, transparent rubber cap surface be it is soft, easily with residing for crack
Cement concrete pavement of aerodrome is bonded, and can also be observed that the progress that solid particulate materials are filled through transparent rubber lid.
It is preferred that, in order to ensure atomizing effect, the device that the water mists mode of the step (4) is used is water atomizer(-iser).
It is preferred that, 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 more than 150 times, can fully melt with water
Close, be conducive to fully contacting for solid particulate materials and Airport Cement concrete fracture surface below；Natural expansion rate is more than
15%, it is to avoid solidification after-contraction causes and repaired disengaging between matrix concrete or the larger internal stress of generation to lose reparation
Lose, and plugging material is expanded in relatively closed crevice space, and effect with pressure is produced in crevice space, can be greatly enhanced
Compactness after plugging material expansion；With strong cohesive force, and compression strength is more than 70MPa, and rupture strength is more than 9MPa, resists
Intensity is cut more than 6MPa so that there is higher comprehensive strength after final repairing.
It is preferred that, in order to ensure that solid particulate materials can enter small crack, smoothly realize between 0.1mm-0.2mm
Microscopic checks reparation, the solid particulate materials particle diameter be the mesh of 180 mesh -250.
It is preferred that, the flow of the water mists mode water filling of the step (4) is 50L/min-100L/min, and operating pressure is
1.4MPa-1.9MPa, is able to ensure that fully contacting for water and solid particulate materials using the appropriate flow and operating pressure, makes
Obtain solid particulate materials quickly can solidify in water swelling.
Cleaning of the liquid nitrogen gasification process of the present invention to crack assists in removing the dust of fracture surface, enhancing plugging material with
The cohesive force of fracture surface；Water is injected into crack using spray regime before the closure of crack, it is ensured that water fully connects with fracture surface
Touch, be more beneficial for fully contacting for solid particulate materials and Airport Cement concrete fracture surface below；It is solid by Geldart-D particle
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, is easy to solid particulate materials fully to absorb water, and crack plugging effect is more preferably.There is the solid particulate materials of use appropriateness to expand
Property, it is to avoid cure shrinkage causes to depart between the matrix.
Examined through practical application, the present invention can realize the comprehensive closure in cement concrete pavement of aerodrome crack, can be with complete
The reparation of paired microscopic checks, more preferably, crack sealing ratiod improves more than 50% to plugging effect, it is ensured that takeoff and landing safety,
Extend airfield pavement service life 30%-50%, with wide applicability.
Brief description of the drawings
Fig. 1 is the schematic diagram in present invention closure 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.
Embodiment
The present invention is described in further detail with reference to embodiment.
Embodiment 1
The method for blocking cement concrete pavement of aerodrome crack, comprises the following steps：
(1) investigate the situation of crack 2 of cement concrete pavement of aerodrome 1 comprehensively using fracture width detector, instruct crack 2
The formulation of closure scheme.Liquid nitrogen is slowly injected into along the propagation direction in crack 2 until full of crack, passing through liquid nitrogen gasification completion pair
The cleaning in crack；
(2) spray regime water filling into the crack 2 of cement concrete pavement of aerodrome 1 is used, course of injection is to Airport Cement
The hydraulic pressure of water filling is 0.4MPa in the crack 2 of concrete road surface 1, and time of repose is 15min；
(3) cladding system 3 is bonded in the Airport Cement concrete road residing for crack 2 with strength natural solidification adhesive glue
On face 1, the relatively closed space that crack 2 is blocked is formed, the one end of solid particulate materials delivery pipe 5 is passed through in cladding system 3,
The external solid particle conveying device of the other end, is sent into solid particulate materials 4 in crack using the method for Geldart-D particle, until solid
Body granular materials 4 is full of crack 2；Cladding system 3 used is transparent rubber lid, and solid is observed that by transparent rubber lid
The progress that granular materials 4 is filled.
(4) this section of crack plugging device 3 is removed, using water atomizer(-iser) to the position water filling of crack 2, the stream of water atomizer(-iser) water filling
Measure as 50L/min, operating pressure is 1.4MPa, untill water no longer oozes down, it is ensured that water fully melts with solid particulate materials 4
Close；
(5) expansion curing after 180min of solid particulate materials 4, with concrete sanding machine to Airport Cement concrete road
Anti-slip veins are scribed in face 1, reach the purpose in the crack 2 of closure cement concrete pavement of aerodrome 1；
(6) according to the distribution situation in crack 2, repeat step (3)-(5), until having blocked all cracks.
Examined through practical application, the present invention can realize the comprehensive closure in cement concrete pavement of aerodrome crack, closure effect
Really good, crack sealing ratiod improves 50%, it is ensured that takeoff and landing safety, extension airfield pavement service life 30%, with extensive
Practicality.
Embodiment 2
The method for blocking cement concrete pavement of aerodrome crack, comprises the following steps：
(1) investigate the situation of crack 2 of cement concrete pavement of aerodrome 1 comprehensively using fracture width detector, instruct crack 2
The formulation of closure scheme.Liquid nitrogen is slowly injected into along the propagation direction in crack 2 until full of crack, passing through liquid nitrogen gasification completion pair
The cleaning in crack；
(2) spray regime water filling into the crack 2 of cement concrete pavement of aerodrome 1 is used, course of injection is to Airport Cement
The hydraulic pressure of water filling is 0.8MPa in the crack 2 of concrete road surface 1, and time of repose is 20min；
(3) cladding system 3 is bonded in the Airport Cement concrete road residing for crack 2 with strength natural solidification adhesive glue
On face 1, the relatively closed space that crack 2 is blocked is formed, the end of solid particulate materials delivery pipe 5 one is connected on cladding system 3,
The external solid particle conveying device of the other end, is sent into solid particulate materials 4 in crack using the method for Geldart-D particle, 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, using water mists mode to the position water filling of crack 2, water mists mode water filling
Flow be 100L/min, operating pressure is 1.9MPa, until water no longer oozes down untill, it is ensured that water and solid particulate materials 4
Fully fusion；
(5) expansion curing after 200min of solid particulate materials 4, with concrete sanding machine to Airport Cement concrete road
Anti-slip veins are scribed in face 1, reach the purpose in the crack 2 of closure cement concrete pavement of aerodrome 1；
(6) according to the distribution situation in crack 2, repeat step (3)-(5), until having blocked all cracks.
Examined through practical application, the present invention can realize the comprehensive closure in cement concrete pavement of aerodrome crack, closure effect
Really good, crack sealing ratiod improves 60%, it is ensured that takeoff and landing safety, extension airfield pavement service life 50%, with extensive
Practicality.
In above-mentioned two embodiment, the solid particulate materials that embodiment 1 is used include：The mass of 52.5 class g cements of PO 36
Part, the mass parts of super absorbent resin 15, the mass parts of epoxy curing agent 10, the mass parts of methylcellulose thickener 8, sulphur aluminic acid
The mass parts of calcium class cement expansive material 6, the mass parts of polycarboxylate high performance water-reducing agent 6, the mass parts of potassium aluminate accelerator 4 and blast furnace
The mass parts of slag 3.
The solid particulate materials that embodiment 2 is used include：The mass parts of 52.5 class g cements of PO 40, super absorbent resin 19
Mass parts, the mass parts of epoxy curing agent 15, the mass parts of methylcellulose thickener 12, calcium sulphoaluminate class cement expansive material
8 mass parts, the mass parts of polycarboxylate high performance water-reducing agent 8, the mass parts of potassium aluminate accelerator 6 and the mass parts of blast-furnace cinder 5.
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, add enough water, record initial volume and setting time.The standard of carrying out is placed in standard curing room after sample shaping and demoulding
Conserve, condition is：20 DEG C ± 2 DEG C of temperature, relative humidity more than 95%, are conserved 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 the solid particulate materials of table 1
As shown in Table 1, plugging material setting time of the invention is short, can meet cement concrete pavement of aerodrome and quickly repair
Demand；Natural expansion rate is more than 15%, it is to avoid solidification after-contraction causes and repaired the disengaging or production between matrix concrete
Raw larger internal stress makes repairing failure, and plugging material expands in relatively closed crevice space, is produced in crevice space
Green tape presses effect, can greatly enhance the compactness after plugging material expansion, effectively block microscopic checks, plugging effect is more preferable；
Have good shearing strength, rupture strength, compression strength, tensile strength excellent after solidification, and with good adhesion strength,
The mechanics and reparation demand of the closure in cement concrete pavement of aerodrome crack can be met.
Claims (8)
1. a kind of method for blocking cement concrete pavement of aerodrome crack, it is characterised in that comprise the following steps：
(1) cement concrete pavement of aerodrome crack situation is investigated using fracture width detector comprehensively, along crack propagation direction
Liquid nitrogen is slowly injected into until full of crack, the cleaning to crack is completed by liquid nitrogen gasification；
(2) after water filling, stood into cement concrete pavement of aerodrome crack using spray regime；
(3) cladding system is bonded in cement concrete pavement of aerodrome residing for crack using adhesive glue, forms crack closure
Relatively closed space, is sent into solid particulate materials in crack using process of pneumatic transmission, until solid particulate materials are full of
Crack；
(4) this section of cladding system is removed, using water mists mode to the water filling of crack position, until water no longer oozes down；
(5) solid particulate materials expansion curing after 180min-200min, airport cement concrete is polished with concrete sanding machine
Anti-slip veins are simultaneously scribed in road face, reach the purpose in closure cement concrete pavement of aerodrome crack；
(6) according to cement concrete pavement of aerodrome fractured zones situation, repeat step (3)-(5), until having blocked all cracks.
2. the method in closure cement concrete pavement of aerodrome crack according to claim 1, it is characterised in that the step
(2) water supply pressure that spray regime is injected into cement concrete pavement of aerodrome crack in is 0.4MPa-0.8MPa, quiet after water filling
The time is put for 15min-20min.
3. the method in closure cement concrete pavement of aerodrome crack according to claim 1, it is characterised in that the step
(3) device that Geldart-D particle is used is solid particulate materials delivery pipe, and solid particulate materials delivery pipe one end is passed through covering dress
In putting, the external solid particle conveying device of the other end.
4. the method in closure cement concrete pavement of aerodrome crack according to claim 1, it is characterised in that the step
(3) cladding system is transparent rubber lid.
5. the method in closure cement concrete pavement of aerodrome crack according to claim 1, it is characterised in that the step
(4) device that water mists mode is used is water atomizer(-iser).
6. the method in closure cement concrete pavement of aerodrome crack according to claim 1, it is characterised in that the step
(3) solid particulate materials in include：The class g cement 36-40 mass parts of PO 52.5, super absorbent resin 15-19 mass parts, ring
Oxygen resin curing agent 10-15 mass parts, methylcellulose thickener 8-12 mass parts, calcium sulphoaluminate class cement expansive material 6-8
Mass parts, polycarboxylate high performance water-reducing agent 6-8 mass parts, potassium aluminate accelerator 4-6 mass parts and blast-furnace cinder 3-5 mass
Part.
7. the method in closure cement concrete pavement of aerodrome crack according to claim 1, it is characterised in that the solid
Granular materials particle diameter is the mesh of 180 mesh -250.
8. the method in closure cement concrete pavement of aerodrome crack according to claim 1, it is characterised in that the step
(4) flow of water mists mode water filling is 50L/min-100L/min, and operating pressure is 1.4MPa-1.9MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710594904.5A CN107299577B (en) | 2017-07-20 | 2017-07-20 | A method of blocking cement concrete pavement of aerodrome crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594904.5A CN107299577B (en) | 2017-07-20 | 2017-07-20 | A method of blocking cement concrete pavement of aerodrome crack |
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| CN107299577A true CN107299577A (en) | 2017-10-27 |
| CN107299577B CN107299577B (en) | 2019-04-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917815A (en) * | 2018-04-03 | 2018-11-30 | 徐州工程学院 | A kind of pipe shaft structure for airfield pavement crack simulation pipeline |
| 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 |
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 |
-
2017
- 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917815A (en) * | 2018-04-03 | 2018-11-30 | 徐州工程学院 | A kind of pipe shaft structure for airfield pavement crack simulation pipeline |
| CN108917815B (en) * | 2018-04-03 | 2020-11-06 | 徐州工程学院 | Pipe body structure for airport pavement crack simulation pipeline |
| 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 |
Also Published As
| Publication number | Publication date |
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| CN107299577B (en) | 2019-04-23 |
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