CN113321530A - Airport pavement wave absorbing agent and preparation method thereof, airport wave absorbing pavement panel and preparation method thereof - Google Patents
Airport pavement wave absorbing agent and preparation method thereof, airport wave absorbing pavement panel and preparation method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 claims abstract description 9
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Images
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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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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
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5072—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with oxides or hydroxides not covered by C04B41/5025
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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
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- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding materials
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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
- 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
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- 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
Abstract
The invention provides an airport pavement wave absorbing agent and a preparation method thereof, and an airport wave absorbing pavement panel and a preparation method thereof, belonging to the technical field of building auxiliary materials, wherein the airport pavement wave absorbing agent comprises 5-10 parts by mass of wave absorbing components, 80-120 parts by mass of organic solvent and 1-5 parts by mass of dispersing agent. The airport pavement wave absorbing agent naturally permeates into an airport pavement base layer by an extravasation method, a microwave absorbing layer is formed on the upper part of the airport pavement base layer after the airport pavement base layer is condensed and hardened, the using amount of the wave absorbing material is reduced, the wave absorbing material is saved, the construction difficulty and the construction cost are reduced, a microwave layer is generated above the airport pavement base layer by a microwave vehicle during snow removal and ice removal, and the microwave layer and the microwave absorbing layer act to generate a wave absorbing and heating effect to melt ice and snow on the airport pavement.
Description
Technical Field
The invention belongs to the technical field of building auxiliary materials, and relates to an airport pavement wave-absorbing material and an airport wave-absorbing pavement panel technology thereof, in particular to an airport pavement wave-absorbing agent and a preparation method thereof, and an airport wave-absorbing pavement panel and a preparation method thereof.
Background
In the northeast, northwest and northwest regions of China, the temperature is low in winter, so that disaster weather such as snowfall, road icing and the like can often occur, the flight delay of an airport pavement due to snow accumulation or icing can be caused, and serious people can even influence the flight safety of an airplane. In order to solve the problems of flight delay and flight safety caused by icing of snow, how to quickly melt snow and ice layers on airport pavement becomes a problem of key attention of people.
With the development of the technology, the main snow removing technology and the deicing technology at present comprise a snow melting agent, mechanical snow removal, a heat pipe, a snow melting coating and the like. The snow-melting agent mostly uses NaCl and also uses CaCl2、MgCl2The practice proves that the use of the chlorine salt snow-melting agent is effective and economical for melting ice and snow in time, but has serious negative effects because the chlorine salt snow-melting agent has stronger corrosivity and quickens the freezing and thawing destructiveness, and chloride ions can quicken the oxidation process of asphalt, thereby reducing the bonding capacity of the asphalt and gravel aggregates, causing serious corrosion damage to road, bridge and other infrastructures, automobiles, underground pipelines and other metal articles, reducing the performance indexes of the asphalt mixture such as freezing and thawing splitting strength, bending tensile strength, dynamic stability and the like, and causing huge economic loss. Mechanical snow removal is to utilize mechanical equipment to clear away the ice and snow on the road surface, and when temperature was lower, because the adhesion between ice and the road surface is great, the effect of using machinery snow removal alone is not good, and the clear away to the ice surface is also not thorough, and snow removing, deicing effect are poor. The investment cost of the heat pipe for removing snow and ice is high, the heat pipe is not mature in domestic application, the service life is short, and the resource waste is easily caused. The requirement of the snow-melting coating on the process is higher, the coating is easy to crack and peel off due to improper construction, the performance of the snow-melting coating is reduced, and the safety of an airplane is influenced.
The prior art also has the technology of removing snow and ice by using wave-absorbing materials, but the prior art mostly mixes the wave-absorbing materials with materials such as cement, concrete and the like to prepare wave-absorbing cement concrete to be paved on airport roads, when the ice and snow are required to be removed, the wave-absorbing heating effect is generated by utilizing the action of microwave generating equipment and the wave-absorbing materials, and the airport pavement paved by using the method has the following defects:
1. when the microwave vehicle and the wave-absorbing material act to generate a wave-absorbing heating effect, the microwave vehicle does not act with the wave-absorbing material distributed in all depths of the airport pavement but acts with the wave-absorbing material on the upper surface part, so that the wave-absorbing material is mixed into the whole airport pavement to cause the waste of the wave-absorbing material.
2. The fact that wave absorbing materials are mixed into the whole airport pavement is equivalent to the fact that impurities are mixed into original cement concrete, and the strength of the airport pavement is affected.
Disclosure of Invention
The invention provides an airport pavement wave absorbing agent and a preparation method thereof, and an airport wave absorbing pavement panel and a preparation method thereof, aiming at the problems that in the prior art, wave absorbing materials are mixed into materials such as cement, concrete and the like, and the airport pavement paved with the wave absorbing cement concrete causes wave absorbing material waste and influences the strength of an airport pavement.
According to the invention, the wave absorbing material is prepared into the wave absorbing agent, and the sprayed organic solvent is sprayed on the surface of the airport cement pavement panel to be poured when the airport cement pavement panel is rapidly solidified to form the microwave absorbing layer with the thickness of 5-20 mm, so that the use is convenient, the waste of the wave absorbing material is avoided, and the strength of the airport pavement is not influenced; the specific technical scheme is as follows:
the airport pavement wave absorbing agent comprises the following components in percentage by mass:
5-10 parts of wave-absorbing component;
80-120 parts of an organic solvent;
1-5 parts of a dispersant;
the wave absorbing components are composed of graphene and nano ferroferric oxide according to the mass ratio of 0-8: 8-0.
Further limiting, the airport pavement wave absorbing agent also comprises 5-15 parts by mass of a cement permeation curing agent.
Further, the organic solvent is one or a combination of two or more of methanol, ethanol, ethyl acetate and acetone.
The preparation method of the airport pavement wave absorbing agent comprises the following steps:
uniformly mixing an organic solvent and a dispersing agent, adding a wave-absorbing component, performing ultrasonic dispersion for 20-30 minutes to uniformly disperse the wave-absorbing component in a mixed solution of the organic solvent and the dispersing agent, adding a cement permeation curing agent, and shaking up to form the airport pavement wave-absorbing agent.
The airport wave absorbing pavement panel comprises an airport pavement base layer and a microwave absorbing layer, wherein the microwave absorbing layer is arranged on the upper part of the airport pavement base layer, and the airport pavement wave absorbing agent is infiltrated into the microwave absorbing layer.
Further defined, the thickness of the microwave absorbing layer is 5-20 mm.
The preparation method of the airport wave-absorbing road panel comprises the following steps:
1) paving an airport pavement base layer with the thickness of 75-100 mm by using cement concrete;
2) uniformly spraying the airport pavement wave absorbent of claim 1 or claim 2 on the upper surface of the airport pavement base layer, standing for 2-3 hours to enable the airport pavement wave absorbent to penetrate downwards through the upper surface of the airport pavement base layer, and forming a microwave absorbing layer of 5-20 mm on the upper part of the airport pavement base layer after the airport pavement base layer is solidified and hardened.
Further limiting, the cement concrete comprises 80-120 parts by mass of cement, 12-18 parts by mass of fly ash, 250 parts by mass of fine aggregate, 450 parts by mass of coarse aggregate, 60-70 parts by mass of water, 1-2 parts by mass of water reducing agent and 8-10 parts by mass of fiber.
Further defined, the strength grade of the cement in the cement concrete is 42.5, and the unit cement dosage is not less than 330kg/m3。
Compared with the prior art, the invention has the beneficial effects that:
1. the airport pavement wave absorbing agent prepared by the invention comprises wave absorbing components, organic solvent and dispersant, wherein the wave absorbing components are dissolved and dispersed by the organic solvent and the dispersant to form the airport pavement wave absorbing agent, the airport pavement wave absorbing agent naturally permeates into a base layer of the airport pavement by an extravasation method, a microwave absorbing layer is formed on the upper part of the base layer of the airport pavement after the base layer of the airport pavement is condensed and hardened, the using amount of the wave absorbing material is reduced, the wave absorbing material is saved, the construction difficulty and the construction cost are reduced, a microwave layer is generated above the base layer of the airport pavement by a microwave vehicle during snow removal and ice removal, and the microwave layer and the microwave absorbing layer act to generate a wave absorbing and heating effect to melt the ice and snow on the airport pavement.
2. The airport pavement wave absorbing agent prepared by the invention also comprises a cement permeation curing agent, and the permeation effect of the airport pavement wave absorbing agent on an airport pavement base layer can be enhanced through the cement permeation curing agent, so that the airport pavement wave absorbing agent permeates to a position 5-20 mm below the upper surface of the airport pavement base layer.
3. Compared with the traditional airport road paved by mixing the wave-absorbing material with cement, concrete and the like, the airport pavement wave-absorbing agent has high conductivity because the wave-absorbing material is wrapped by the concrete in the traditional method, and the wave-absorbing material is on the surface, so the wave-absorbing material has strong wave-absorbing capability.
4. The airport pavement wave absorbing agent can improve the anti-skid performance of the airport pavement base layer to 45-65%, namely the airport wave absorbing pavement panel has good anti-skid performance.
5. The microwave absorbing layer of the invention has the thickness of 5-20 mm, which accounts for 5-20% of the thickness of the whole airport pavement base layer, has small influence on the strength of the airport pavement, and can ensure that the airport pavement meets the standard strength requirement, even is higher than the standard strength requirement.
Drawings
FIG. 1 is a schematic structural view of an airport wave-absorbing tunnel panel of the present invention;
wherein, 1-airport pavement base layer, 2-microwave absorbing layer, and 3-microwave layer.
Detailed Description
The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
Example 1
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
10 parts of wave-absorbing component;
100 parts of an organic solvent;
and 2 parts of a dispersing agent.
The wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass ratio of 1:1, the organic solvent is ethanol, and the dispersing agent is 5040 dispersing agent.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 100 parts by mass of organic solvent and 2 parts by mass of dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 10 parts by mass of wave-absorbing components, adding the wave-absorbing components, uniformly stirring, and performing ultrasonic dispersion for 25 minutes at the ultrasonic frequency of 20KHz to fully dissolve and fully disperse graphene and nano ferroferric oxide in the organic solvent and the dispersing agent to form the airport runway surface wave-absorbing agent.
Example 2
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
8 parts of wave-absorbing component;
100 parts of an organic solvent;
and 2 parts of a dispersing agent.
The wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass ratio of 8:0, the organic solvent is ethanol, and the dispersing agent is 5040 dispersing agent.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 100 parts by mass of organic solvent and 2 parts by mass of dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 8 parts by mass of wave-absorbing components, adding the wave-absorbing components, uniformly stirring, and performing ultrasonic dispersion for 25 minutes at the ultrasonic frequency of 20KHz to fully dissolve and fully disperse graphene in the organic solvent and the dispersing agent to form the airport pavement wave-absorbing agent.
Example 3
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
8 parts of wave-absorbing component;
100 parts of an organic solvent;
and 2 parts of a dispersing agent.
The wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass part ratio of 0:8, the organic solvent is ethanol, and the dispersing agent is 5040 dispersing agent.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 100 parts by mass of organic solvent and 2 parts by mass of dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 8 parts by mass of wave-absorbing components, adding the wave-absorbing components, uniformly stirring, and performing ultrasonic dispersion for 25 minutes at the ultrasonic frequency of 20KHz to fully dissolve and fully disperse the nano ferroferric oxide in the organic solvent and the dispersing agent to form the airport pavement wave-absorbing agent.
Example 4
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
the wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass ratio of 1:1, the organic solvent is ethanol, the dispersant is 5040 dispersant, and the cement permeation curing agent is octyl triethoxysilane emulsion.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 100 parts by mass of an organic solvent and 2 parts by mass of a dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 10 parts by mass of a wave-absorbing component, adding the wave-absorbing component, uniformly stirring, performing ultrasonic dispersion for 25 minutes, wherein the ultrasonic frequency is 20KHz, fully dissolving and fully dispersing graphene and nano ferroferric oxide in the organic solvent and the dispersing agent, adding 10 parts by mass of a cement permeation curing agent, and shaking uniformly to form the airport pavement wave-absorbing agent.
Example 5
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
the wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass ratio of 8:0, the organic solvent is ethanol, the dispersant is 5040 dispersant, and the cement permeation curing agent is octyl triethoxysilane emulsion.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 100 parts by mass of an organic solvent and 2 parts by mass of a dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 8 parts by mass of a wave-absorbing component, adding the wave-absorbing component, uniformly stirring, performing ultrasonic dispersion for 25 minutes, wherein the ultrasonic frequency is 20KHz, fully dissolving and fully dispersing graphene in the organic solvent and the dispersing agent, adding 10 parts by mass of a cement permeation curing agent, and shaking uniformly to form the airport pavement wave-absorbing agent.
Example 6
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
the wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass ratio of 0:8, the organic solvent is ethanol, the dispersant is 5040 dispersant, and the cement permeation curing agent is octyl triethoxysilane emulsion.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 100 parts by mass of organic solvent and 2 parts by mass of dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 8 parts by mass of wave-absorbing components, adding the wave-absorbing components, uniformly stirring, performing ultrasonic dispersion for 25 minutes, wherein the ultrasonic frequency is 20KHz, fully dissolving and fully dispersing nano ferroferric oxide in the organic solvent and the dispersing agent, adding 10 parts by mass of cement permeation curing agent, and shaking uniformly to form the airport pavement wave-absorbing agent.
Example 7
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
the wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass ratio of 5:3, the organic solvent is ethanol, the dispersant is 5040 dispersant, and the cement permeation curing agent is octyl triethoxysilane emulsion.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 80 parts by mass of organic solvent and 1 part by mass of dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 8 parts by mass of wave-absorbing components, adding the wave-absorbing components, uniformly stirring, performing ultrasonic dispersion for 20 minutes, wherein the ultrasonic frequency is 20KHz, fully dissolving and fully dispersing nano ferroferric oxide in the organic solvent and the dispersing agent, adding 5 parts by mass of cement permeation curing agent, and shaking uniformly to form the airport pavement wave-absorbing agent.
Example 8
The airport pavement wave absorbing agent comprises the following components in percentage by mass:
the wave absorbing component is prepared from graphene and nano ferroferric oxide according to the mass ratio of 2:6, the organic solvent is ethanol, the dispersant is 5040 dispersant, and the cement permeation curing agent is octyl triethoxysilane emulsion.
The preparation method of the airport pavement wave absorbing agent comprises the following steps: stirring 120 parts by mass of organic solvent and 5 parts by mass of dispersing agent until the organic solvent and the dispersing agent are uniformly mixed, fully grinding 8 parts by mass of wave-absorbing components, adding the wave-absorbing components, uniformly stirring, performing ultrasonic dispersion for 30 minutes, wherein the ultrasonic frequency is 20KHz, fully dissolving and fully dispersing nano ferroferric oxide in the organic solvent and the dispersing agent, adding 5 parts by mass of cement permeation curing agent, and shaking uniformly to form the airport pavement wave-absorbing agent.
Example 9
Referring to fig. 1, the airport microwave absorbing pavement panel of the present embodiment includes an airport pavement base layer 1 and a microwave absorbing layer 2, wherein the microwave absorbing layer 2 is disposed on the airport pavement base layer 1, and the airport pavement wave absorbing agent of any one of embodiments 1 to 8 is infiltrated on the microwave absorbing layer 2; the thickness of the microwave absorbing layer 2 is 10 mm, and the thickness of the airport pavement base layer 1 is 80 mm.
The preparation method of the airport wave-absorbing road panel comprises the following steps:
1) paving an airport pavement base layer 1 with the thickness of 80mm by using cement concrete;
2) uniformly spraying the airport pavement wave absorbent of any one of embodiments 1 to 8 on the upper surface of the airport pavement base layer 1, standing for 2 hours to enable the airport pavement wave absorbent to downwards penetrate through the upper surface of the airport pavement base layer 1, and forming a 10 mm microwave absorbing layer on the upper part of the airport pavement base layer 1 after the airport pavement base layer 1 is solidified and hardened;
the cement concrete of the embodiment comprises 100 parts by mass of cement, 15 parts by mass of fly ash, 226 parts by mass of fine aggregate, 438 parts by mass of coarse aggregate, 64 parts by mass of water, 1.5 parts by mass of water reducing agent and 8 parts by mass of fiber; the strength grade of the cement is 42.5, and the unit cement dosage is not less than 330kg/m3。
The thickness of the microwave absorbing layer 2 in this embodiment may be arbitrarily selected from 5 mm to 20mm according to specific construction condition requirements, and may be 5 mm, 10 mm, 15 mm, 18 mm, or 20 mm; the thickness of the airport pavement base layer 1 may be arbitrarily selected from 75 mm to 100 mm according to specific construction condition requirements, and may be 75 mm, 80mm, 85 mm, 90 mm, 95 mm or 100 mm.
When the microwave vehicle is used, the microwave layer 3 is generated above the airport pavement base layer 1, and the microwave layer 3 and the microwave absorption layer 2 act to generate a wave-absorbing heating effect to melt ice and snow on the airport pavement.
Example 10
Different from the embodiment 9, the preparation method of the airport wave-absorbing pavement panel of the embodiment comprises the following steps:
1) paving an airport pavement base layer 1 with the thickness of 100 mm by using cement concrete;
2) the airport pavement wave absorbent of any one of embodiments 1 to 8 is uniformly sprayed on the upper surface of the airport pavement base layer 1, and is kept still for 2.5 hours, so that the airport pavement wave absorbent downwardly penetrates through the upper surface of the airport pavement base layer 1, and a microwave absorbing layer of 15 mm is formed on the upper part of the airport pavement base layer 1 after the airport pavement base layer 1 is solidified and hardened.
The cement concrete of the embodiment includes, by mass, 80 parts of cement, 12 parts of fly ash, 200 parts of fine aggregate, 400 parts of coarse aggregate, 60 parts of water, 1 part of water reducing agent, and 9 parts of fiber. The rest is the same as in example 9.
Example 11
Different from the embodiment 9, the preparation method of the airport wave-absorbing pavement panel of the embodiment comprises the following steps:
1) paving an airport pavement base layer 1 with the thickness of 75 mm by using cement concrete;
2) the airport pavement wave absorbent of any one of embodiments 1 to 8 is uniformly sprayed on the upper surface of the airport pavement base layer 1, and is left standing for 3 hours, so that the airport pavement wave absorbent downwardly penetrates through the upper surface of the airport pavement base layer 1, and a 5 mm microwave absorbing layer is formed on the upper part of the airport pavement base layer 1 after the airport pavement base layer 1 is solidified and hardened.
The cement concrete of the embodiment includes, by mass, 120 parts of cement, 18 parts of fly ash, 250 parts of fine aggregate, 450 parts of coarse aggregate, 70 parts of water, 2 parts of a water reducing agent, and 10 parts of fiber. The rest is the same as in example 9.
The dispersant in the above embodiment may be other types of dispersants such as amine salt, quaternary amine salt, pyridinium salt, phosphate salt type, etc. in addition to the 5040 dispersant; the cement permeation curing agent can be compound modified resin or other types of cement permeation curing agents besides the octyl triethoxysilane emulsion; the organic solvent can be ethyl acetate or acetone or the combination of two or more than two of methanol, ethanol, ethyl acetate and acetone in any proportion besides methanol and ethanol; and is not limited by the above-described embodiments.
7 test pieces were prepared according to the cement concrete formulation of example 9, the preparation process being: introducing cement concrete into a steel die of 180mm × 180mm × 20mm, filling the die, placing the die on a vibrating table, vibrating for 1 minute, scraping the surface, standing for 1.5 hours, uniformly spraying the airport pavement wave absorbing agent of examples 1-6 and the cement permeation curing agent of the comparative example on the upper surfaces of 7 test pieces, standing for 2 hours to enable the airport pavement wave absorbing agent and the cement permeation curing agent to permeate to the upper surfaces of the sample making pieces, forming a microwave absorbing layer of about 10 mm on the upper parts of the sample making pieces after the sample making pieces are solidified and hardened, placing the sample making pieces and the steel film in a curing chamber, curing for 24 hours, removing the die, and curing for 28 days under the conditions of temperature of about 20 ℃ and humidity of 90%. The comparative example contained only 10 parts of a cement penetration curing agent, which was an octyl triethoxysilane emulsion. The performance test of 7 test pieces has the following test results:
table 1: comparative results of test pieces sprayed with airport pavement wave absorbing agent of examples 1 to 6 and cement penetration curing agent of comparative example
Referring to table 1, it can be seen that the conductivity of the test pieces sprayed with the airport pavement absorbent of examples 1-6 is 2.5×10-2～4.1×10-2S·cm-1In the prior art, the conductivity of the airport road paved by mixing the wave-absorbing material with cement, concrete and the like is generally 1.2x10-2～3..6x10-2s cm-1Therefore, the airport pavement base layer formed by the airport pavement wave absorbing agent has strong electric conductivity, so that the wave absorbing capacity of the airport pavement base layer is enhanced.
Compared with the examples 4-6, the strength of the test piece with the cement permeable curing agent is increased by about 20% in the examples 1-3, and the comparison of the examples 1-7 and the example 7 shows that the strength of the test piece with the cement permeable curing agent is increased by about 10%, and the material strength can be further increased due to the fact that the cement permeable curing agent, the graphene and the nano ferroferric oxide form a compact structure in the range of the surface layer, the inner pores of the concrete are filled, and the mixture of the cement permeable curing agent, the graphene and the nano ferroferric oxide can further increase the strength of the material, so that the airport pavement base layer has better strength.
Comparing examples 1-5 with example 7, it can be found that the penetration thickness of the wave-absorbing material added is less than the penetration thickness of the cement penetration curing agent added, the cement penetration curing agent added and the wave-absorbing material added, wherein the penetration thickness of the cement penetration curing agent added and the wave-absorbing material added is the largest, and the penetration thickness is improved by about 50% -70% under the mixing action of the cement penetration curing agent added and the wave-absorbing material added, so that the airport pavement wave-absorbing agent has better penetration.
Table 2: airport pavement structure depth grade standard
| Grade of anti-skid performance of airport runway | Good taste | In | Difference (D) |
| Construction depth/(mm) | ≥0.8 | 0.4～0.8 | ≤0.4 |
Comparing table 1 and table 2, it can be seen that the airport wave-absorbing pavement panel of the invention has better anti-skid performance, and the anti-skid performance of the upper surface of the airport pavement base layer can be improved to about 45-65% by the airport pavement wave-absorbing agent of the invention.
Claims (9)
1. The airport pavement wave absorbing agent is characterized by comprising the following components in percentage by mass:
5-10 parts of wave-absorbing component;
80-120 parts of an organic solvent;
1-5 parts of a dispersant;
the wave absorbing components are composed of graphene and nano ferroferric oxide according to the mass ratio of 0-8: 8-0.
2. The airport pavement wave absorber of claim 1, further comprising 5-15 parts by mass of a cement penetration curing agent.
3. The airfield pavement absorbent according to claim 2 wherein the organic solvent is one or a combination of two or more of methanol, ethanol, ethyl acetate or acetone.
4. The method of preparing an airport pavement wave absorber of claim 2, comprising the steps of:
uniformly mixing an organic solvent and a dispersing agent, adding a wave-absorbing component, performing ultrasonic dispersion for 20-30 minutes to uniformly disperse the wave-absorbing component in a mixed solution of the organic solvent and the dispersing agent, adding a cement permeation curing agent, and shaking up to form the airport pavement wave-absorbing agent.
5. The airport wave absorbing pavement panel is characterized by comprising an airport pavement base layer (1) and a microwave absorbing layer (2), wherein the microwave absorbing layer (2) is arranged on the upper part of the airport pavement base layer (1), and the airport pavement wave absorbing agent as claimed in claim 1 or claim 2 is infiltrated in the microwave absorbing layer (2).
6. The airport microwave absorbing pavement panel according to claim 5, characterized in that said microwave absorbing layer (2) has a thickness of 5-20 mm.
7. The method of making an airport microwave absorbing tunnel panel of claim 6 comprising the steps of:
1) paving an airport pavement base layer (1) with the thickness of 75-100 mm by using cement concrete;
2) uniformly spraying the airport pavement wave absorbent according to claim 1 or claim 2 on the upper surface of the airport pavement base layer (1), standing for 2-3 hours to enable the airport pavement wave absorbent to penetrate downwards through the upper surface of the airport pavement base layer (1), and forming a microwave absorbing layer of 5-20 mm on the upper part of the airport pavement base layer (1) after the airport pavement base layer (1) is solidified and hardened.
8. The method for preparing the airport wave-absorbing pavement panel as claimed in claim 7, wherein the cement concrete comprises 80-120 parts by mass of cement, 12-18 parts by mass of fly ash, 250 parts by mass of fine aggregate, 450 parts by mass of coarse aggregate, 60-70 parts by mass of water, 1-2 parts by mass of water reducing agent and 8-10 parts by mass of fiber.
9. The method for preparing the airport wave-absorbing pavement panel of claim 8, wherein the strength grade of cement in the cement concrete is 42.5, and the unit cement dosage is not less than 330kg/m3。
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Application publication date: 20210831 Assignee: XI'AN HUAZE HIGHWAY MATERIAL Co.,Ltd. Assignor: CHANG'AN University Contract record no.: X2023980045245 Denomination of invention: Airport pavement absorbing agent and preparation method, and airport absorbing channel panel and preparation method Granted publication date: 20221125 License type: Common License Record date: 20231101 |
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