CN112323623B - Steel bridge deck pavement structure and pavement process thereof - Google Patents
Steel bridge deck pavement structure and pavement process thereof Download PDFInfo
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- CN112323623B CN112323623B CN202010964823.1A CN202010964823A CN112323623B CN 112323623 B CN112323623 B CN 112323623B CN 202010964823 A CN202010964823 A CN 202010964823A CN 112323623 B CN112323623 B CN 112323623B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Abstract
The invention discloses a steel bridge deck pavement structure and a pavement process, wherein the structure comprises a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on a steel bridge base surface from bottom to top; the waterproof layer coating consists of A, B, C three components; the raw materials of the component A comprise: methyl methacrylate resin, butyl methacrylate, isooctyl acrylate, cyanate ester resin, anti-precipitation auxiliary agent, pigment, illite powder, aluminum silicate fiber, cordierite, silicon carbide whisker, ultraviolet absorbent UV-326, light stabilizer 292, phenylthiourea, N-dimethylaniline and polymerization inhibitor; the component B comprises the following raw materials: methyl methacrylate resin, butyl methacrylate, isooctyl acrylate, modified methyl methacrylate resin, MQ silicon resin, anti-precipitation auxiliary agent, pigment, hexaphenylcyclotrisilazane, sepiolite, nano silicon dioxide, layered aluminum phosphate, ultraviolet absorbent UV-326, light stabilizer 292 and coupling agent; the component C is a curing agent.
Description
Technical Field
The invention relates to the technical field of road pavement, in particular to a steel bridge deck pavement structure and a pavement process thereof.
Background
In the last two decades, steel structure bridges are irreplaceable in terms of high strength, rapidness and large crossing capability, wherein a bridge deck pavement layer directly laid on a steel bridge deck is an important component of the steel structure bridges, and plays an extremely important role in bridge durability, traffic safety, comfort, economic benefit and social benefit, and steel bridge deck pavement is a worldwide problem, although countries in the world spend a great deal of manpower and material resources on researching the bridge deck pavement, in the built steel bridge, the performance of bridge deck pavement is not always satisfactory, due to the limitation of pavement structure design and pavement materials, the tests of natural factors such as high temperature, low temperature, severe temperature difference conversion, wind load, earthquake and the like are difficult to meet and endure, the bridge deck pavement of some existing steel structure bridges has the defect of poor durability, and serious diseases can occur within a short time of traffic, limiting its application.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a steel bridge deck pavement structure and a pavement process thereof, the process is simple, the obtained pavement structure is reliable in quality, the problems of delamination, rutting and the like are not easy to occur, and the steel bridge deck pavement structure is good in waterproof performance and wear resistance and excellent in durability.
The invention provides a bridge deck pavement structure of a steel bridge, which comprises a primer layer, a waterproof layer and an adhesive layer, wherein the primer layer, the waterproof layer and the adhesive layer are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 43-60: 40-50: 1-3;
the component A comprises the following raw materials in parts by weight: 45-57 parts of methyl methacrylate resin, 10-25 parts of butyl methacrylate, 8-15 parts of isooctyl acrylate, 8-17 parts of cyanate ester resin, 1.6-2.3 parts of anti-precipitation auxiliary agent, 3-6 parts of pigment, 9-17 parts of illite powder, 7-18 parts of aluminum silicate fiber, 3-15 parts of cordierite, 8-16 parts of silicon carbide whisker, 8-1 part of benzotriazole ultraviolet absorbent UV-3260.1, 2920.1-0.5 part of hindered amine light stabilizer, 0.1-0.6 part of phenylthiourea, 0.2-0.6 part of N, N-dimethylaniline and 0.005-0.007 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 20-38 parts of methyl methacrylate resin, 10-25 parts of butyl methacrylate, 8-15 parts of isooctyl acrylate, 10-20 parts of modified methyl methacrylate resin, 6-13 parts of MQ silicon resin, 1-2 parts of anti-precipitation auxiliary agent, 3-6 parts of pigment, 2-5 parts of hexaphenylcyclotrisilazane, 4-16 parts of sepiolite, 2-11 parts of nano silicon dioxide, 9-22 parts of layered aluminum phosphate, UV-3260.1-0.6 part of benzotriazole ultraviolet absorbent, 2920.2-0.5 part of hindered amine light stabilizer and 0.6-2 parts of coupling agent;
the component C is a curing agent.
Preferably, the primer layer is an epoxy zinc-rich paint layer; the waterproof layer is of a double-layer structure.
Preferably, in the component A and the component B, the anti-settling auxiliary agent is organic bentonite MP250 and an anti-settling agent MT6650, and the weight ratio is 1: 3-5.
Preferably, in the component A and the component B, the pigment is one of iron black, titanium dioxide, phthalocyanine blue and phthalocyanine green.
Preferably, the length of the silicon carbide whisker is 15-25 μm, and the diameter is 30-80 nm.
Preferably, the coupling agent is dodecyl trimethoxy silane, N- (beta-aminoethyl) -gamma-aminopropyl trimethoxy silane, and the weight ratio of the dodecyl trimethoxy silane to the N- (beta-aminoethyl) -gamma-aminopropyl trimethoxy silane is 1: 7-14.
Preferably, the curing agent comprises dibenzoyl peroxide and methyl ethyl ketone peroxide in a weight ratio of 1: 2-4.
Preferably, the preparation method of the modified methyl methacrylate resin comprises the following steps: adding a silane coupling agent KH-560 into acetone, adjusting the pH value to 3-4, stirring and hydrolyzing at room temperature, adding carbon nano tube/silicon dioxide composite particles, removing the silane coupling agent KH-560 and acetone after ultrasonic oscillation, and drying to obtain modified composite particles; mixing dimethyl sulfoxide, alpha-methylpyridine and modified composite particles, adding an initiator BPO after ultrasonic oscillation, heating to 70-75 ℃, dropwise adding a mixture of methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantane methacrylate at 70-75 ℃, stirring at constant temperature of 70-75 ℃ after dropwise adding for reaction for 45-60min, and carrying out post-treatment after the reaction is finished to obtain the modified methyl methacrylate resin.
Preferably, in the preparation process of the modified methyl methacrylate resin, the weight ratio of the silane coupling agent KH-560 to the carbon nanotube/silica composite particles is 15-27: 50-100 parts of; the weight ratio of the modified composite particles, methyl methacrylate, alpha-methyl styrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate is 2-6: 35-55: 1-5: 0.5-2: 1-4.
The invention also provides a paving process of the steel bridge deck pavement structure, which comprises the following steps:
s1, polishing and cleaning the surface of the steel bridge base surface, and then performing sand blasting to remove rust so that the cleanliness of the surface of the steel bridge base surface subjected to sand blasting and rust removal is Sa2.5 grade, and the roughness is 50-100 mu m;
s2, rolling and coating primer within 30-120min of sand blasting and rust removing to form a primer layer; wherein the primer is epoxy zinc-rich paint, and the dosage of the primer is 120-150g/m2；
S3, spraying the modified methyl methacrylate coating after the primer is cured, wherein the dosage of the modified methyl methacrylate coating is 1000-1400g/m2(ii) a Spraying the modified methyl methacrylate coating again after curing, wherein the dosage of the modified methyl methacrylate coating is 1000-1400g/m2Forming a waterproof layer after curing;
s4, 170g/m at 130-2The adhesive is coated on the waterproof layer in a scraping mode to form the bonding layer.
Preferably, the coating also comprises a leveling layer, an abrasion-resistant layer, an anti-skid layer and a top protective layer which are sequentially coated on the bonding layer from bottom to top.
Preferably, the leveling layer can be a modified polymethyl methacrylate resin mortar leveling layer; the abrasion-resistant layer is a modified polymethyl methacrylate resin abrasion-resistant layer; the cover protective layer is a nano-silicon anti-pollution sealant cover protective layer.
Preferably, in the preparation process of the modified methyl methacrylate resin, the post-treatment may include diluting the reacted product with acetone, filtering, centrifuging, alcohol washing, soxhlet extraction, and drying.
Preferably, the adamantane methacrylate can be prepared by taking 1-adamantanol and methacryloyl chloride as raw materials through esterification reaction.
Preferably, the adamantyl methacrylate may be 1, 3-adamantanediol dimethacrylate, 2-methyl-2-adamantyl methacrylate, or 2-ethyl-2-adamantyl methacrylate.
Preferably, the A component and the B component of the coating can also comprise polypropylene glycol dimethacrylate.
The bridge deck pavement structure of the steel bridge comprises a primer layer coated on the surface of a steel bridge base surface, a waterproof layer coated on the primer layer and an adhesive layer coated on the waterproof layer; the waterproof layer is formed by spraying a modified methyl methacrylate coating, the cyanate ester resin and the MQ silicon resin are added into the raw materials of the modified methyl methacrylate coating, the content of the cyanate ester resin and the MQ silicon resin is controlled, the triazine ring and the organic silicon are introduced into the system, the synergistic effect of the triazine ring and the organic silicon with the methyl methacrylate resin is exerted, so that the obtained coating has good thermal stability, excellent water resistance and wear resistance, and large adhesive force, and simultaneously the phenomenon of hot sticking and cold brittleness is avoided, illite powder, aluminum silicate fiber, cordierite, silicon carbide whisker, hexaphenyl ring trisilazane, sepiolite, nano silicon dioxide and layered aluminum phosphate are cooperatively added to carry out blending modification on the methyl methacrylate resin coating system, the content in the system is controlled, so that the raw materials are good, uniformly dispersed, the synergistic effect is exerted, the mechanical property and the heat resistance of the obtained coating are both improved, the corrosion resistance and the ageing resistance are excellent; in the preparation process of modified methyl methacrylate resin, a silane coupling agent KH-560 is used as a modifier to modify carbon nano tube/silicon dioxide composite particles, the obtained modified composite particles are matched with alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantane methacrylate to modify the methyl methacrylate resin, the obtained modified methyl methacrylate resin is added into a coating, a nano composite filler is introduced into the modified coating, and rigid adamantane and carborane are introduced to play a synergistic effect, on one hand, in the heating process, the carborane can react with oxygen in the air and oxygen elements in the methyl methacrylate resin to generate boron oxide to cover the surface of a substrate so as to delay the degradation of the coating, on the other hand, the introduced adamantane is a highly symmetrical saturated hydrocarbon, the waterproof layer has high-temperature resistance, can bear thermal shock during upper layer pavement construction, overcomes the defect of low use temperature of pure methyl methacrylate resin, has good waterproofness, avoids delamination, pit grooves and other damages caused by failure of the waterproof layer, endows the pavement structure with excellent durability, and has the service life of more than 13 years.
The bridge deck pavement structure of the steel bridge is detected (JT/T712-; dipping the mixture in a calcium hydroxide saturated solution for 24 hours without abnormality; keeping the temperature at minus 10 ℃ for 4h, standing the mixture at room temperature for 4h to form a cycle, and continuously performing three cycles without cracks; the compressive strength (23 +/-1 ℃) is more than or equal to 58 MPa; the time for non-sticking the tire is less than 50 min;
the tensile bonding strength (25 ℃) is more than or equal to 7MPa (pavement design and construction technical guidance of the highway steel box girder bridge deck).
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A steel bridge deck pavement structure comprises a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 60: 40: 3;
the component A comprises the following raw materials in parts by weight: 45 parts of methyl methacrylate resin, 10 parts of butyl methacrylate, 8 parts of isooctyl acrylate, 17 parts of cyanate ester resin, 1.6 parts of anti-precipitation auxiliary agent, 4 parts of pigment, 9 parts of illite powder, 18 parts of aluminum silicate fiber, 3 parts of cordierite, 8 parts of silicon carbide whisker, 8 parts of benzotriazole ultraviolet absorbent UV-3261 parts, 2920.5 parts of hindered amine light stabilizer, 0.1 part of phenylthiourea, 0.6 part of N, N-dimethylaniline and 0.005 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 20 parts of methyl methacrylate resin, 10 parts of butyl methacrylate, 8 parts of isooctyl acrylate, 20 parts of modified methyl methacrylate resin, 6 parts of MQ silicon resin, 2 parts of anti-precipitation auxiliary agent, 3 parts of pigment, 2 parts of hexaphenyl cyclotrisilazane, 11 parts of sepiolite, 11 parts of nano silicon dioxide, 9 parts of layered aluminum phosphate, UV-3260.6 parts of benzotriazole ultraviolet absorbent, 2920.2 parts of hindered amine light stabilizer and 2 parts of coupling agent;
the component C is a curing agent.
Example 2
A steel bridge deck pavement structure comprises a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 43: 50: 1;
the component A comprises the following raw materials in parts by weight: 57 parts of methyl methacrylate resin, 25 parts of butyl methacrylate, 15 parts of isooctyl acrylate, 8 parts of cyanate ester resin, 2 parts of anti-precipitation auxiliary agent, 6 parts of pigment, 17 parts of illite powder, 7 parts of aluminum silicate fiber, 15 parts of cordierite, 9 parts of silicon carbide whisker, 0.6 part of benzotriazole ultraviolet absorbent UV-3260.3 part of hindered amine light stabilizer 2920.1 part, 0.6 part of phenylthiourea, 0.2 part of N, N-dimethylaniline and 0.007 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 38 parts of methyl methacrylate resin, 25 parts of butyl methacrylate, 15 parts of isooctyl acrylate, 10 parts of modified methyl methacrylate resin, 13 parts of MQ silicon resin, 1 part of anti-precipitation auxiliary agent, 6 parts of pigment, 4 parts of hexaphenyl cyclotrisilazane, 16 parts of sepiolite, 2 parts of nano silicon dioxide, 22 parts of layered aluminum phosphate, UV-3260.1 parts of benzotriazole ultraviolet absorbent, 2920.5 parts of hindered amine light stabilizer and 0.6 part of coupling agent;
the component C is a curing agent.
Example 3
A steel bridge deck pavement structure comprises a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 56: 43: 2;
the component A comprises the following raw materials in parts by weight: 53 parts of methyl methacrylate resin, 10 parts of butyl methacrylate, 12 parts of isooctyl acrylate, 11 parts of cyanate ester resin, 2.3 parts of anti-precipitation auxiliary agent, 3 parts of iron oxide black, 12 parts of illite powder, 13 parts of aluminum silicate fiber, 5 parts of cordierite, 16 parts of silicon carbide whisker, UV-3260.1 parts of benzotriazole ultraviolet absorbent, 2920.36 parts of hindered amine light stabilizer, 0.3 part of phenylthiourea, 0.5 part of N, N-dimethylaniline and 0.006 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 33 parts of methyl methacrylate resin, 10 parts of butyl methacrylate, 12 parts of isooctyl acrylate, 14 parts of modified methyl methacrylate resin, 10 parts of MQ silicon resin, 1.4 parts of anti-precipitation auxiliary agent, 3 parts of iron black, 5 parts of hexaphenyl cyclotrisilazane, 4 parts of sepiolite, 9 parts of nano silicon dioxide, 12 parts of layered aluminum phosphate, UV-3260.55 parts of benzotriazole ultraviolet absorbent, 2920.2 parts of hindered amine light stabilizer and 1.7 parts of coupling agent;
the component C is a curing agent;
wherein in the component A and the component B, the anti-settling auxiliary agent is organic bentonite MP250 and an anti-settling agent MT6650 in a weight ratio of 1: 3;
the length of the silicon carbide whisker is 15-25 mu m, and the diameter is 30-80 nm;
the coupling agent is dodecyl trimethoxy silane and N- (beta-aminoethyl) -gamma-aminopropyl trimethoxy silane in a weight ratio of 1: 7;
the curing agent comprises dibenzoyl peroxide and methyl ethyl ketone peroxide according to a weight ratio of 1: 2;
the preparation method of the modified methyl methacrylate resin comprises the following steps: adding a silane coupling agent KH-560 into acetone, adjusting the pH value to 3, stirring and hydrolyzing at room temperature, adding carbon nano tube/silicon dioxide composite particles, removing the silane coupling agent KH-560 and the acetone after ultrasonic oscillation, and drying to obtain modified composite particles; mixing dimethyl sulfoxide, alpha-methylpyridine and modified composite particles, adding an initiator BPO after ultrasonic oscillation, heating to 75 ℃, dropwise adding a mixture of methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate at 75 ℃, stirring and reacting at the constant temperature of 75 ℃ for 45min after dropwise adding, and performing post-treatment after the reaction to obtain the modified methyl methacrylate resin; wherein, the weight ratio of the silane coupling agent KH-560 to the carbon nano tube/silicon dioxide composite particles is 27: 50; the weight ratio of the modified composite particles, methyl methacrylate, alpha-methyl styrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate is 2: 55: 1: 2: 1.
example 4
A steel bridge deck pavement structure comprises a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 49: 48: 1;
the component A comprises the following raw materials in parts by weight: 49 parts of methyl methacrylate resin, 19 parts of butyl methacrylate, 15 parts of isooctyl acrylate, 14 parts of cyanate ester resin, 1.9 parts of anti-precipitation auxiliary agent, 5 parts of titanium dioxide, 14 parts of illite powder, 9 parts of aluminum silicate fiber, 13 parts of cordierite, 11 parts of silicon carbide whisker, UV-3260.8 parts of benzotriazole ultraviolet absorbent, 2920.2 parts of hindered amine light stabilizer, 0.55 part of phenylthiourea, 0.28 part of N, N-dimethylaniline and 0.007 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 25 parts of methyl methacrylate resin, 19 parts of butyl methacrylate, 15 parts of isooctyl acrylate, 18 parts of modified methyl methacrylate resin, 9 parts of MQ silicon resin, 1.8 parts of anti-precipitation auxiliary agent, 4 parts of titanium dioxide, 3 parts of hexaphenyl cyclotrisilazane, 11 parts of sepiolite, 4 parts of nano silicon dioxide, 18 parts of layered aluminum phosphate, 18 parts of benzotriazole ultraviolet absorbent UV-3260.3 parts, 2920.28 parts of hindered amine light stabilizer and 0.6 part of coupling agent;
the component C is a curing agent;
wherein the primer layer is an epoxy zinc-rich paint layer; the waterproof layer is of a double-layer structure;
in the component A and the component B, the anti-settling auxiliary agent is organic bentonite MP250 and an anti-settling agent MT6650 in a weight ratio of 1: 5 with a mixture of;
the length of the silicon carbide whisker is 15-25 mu m, and the diameter is 30-80 nm;
the coupling agent is dodecyl trimethoxy silane and N- (beta-aminoethyl) -gamma-aminopropyl trimethoxy silane in a weight ratio of 1: 14, a mixture of;
the curing agent comprises dibenzoyl peroxide and methyl ethyl ketone peroxide according to a weight ratio of 1: 4;
the preparation method of the modified methyl methacrylate resin comprises the following steps: adding a silane coupling agent KH-560 into acetone, adjusting the pH value to 4, stirring and hydrolyzing at room temperature, adding carbon nano tube/silicon dioxide composite particles, removing the silane coupling agent KH-560 and the acetone after ultrasonic oscillation, and drying to obtain modified composite particles; mixing dimethyl sulfoxide, alpha-methylpyridine and modified composite particles, adding an initiator BPO after ultrasonic oscillation, heating to 70 ℃, dropwise adding a mixture of methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate at 70 ℃, stirring and reacting at the constant temperature of 70 ℃ for 60min after dropwise adding, and performing post-treatment after the reaction to obtain the modified methyl methacrylate resin; wherein the weight ratio of the silane coupling agent KH-560 to the carbon nano tube/silicon dioxide composite particles is 15: 100, respectively; the weight ratio of the modified composite particles, methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate is 6: 35: 5: 0.5: 4.
the invention also provides a paving process of the steel bridge deck pavement structure, which comprises the following steps:
s1, polishing and cleaning the surface of the steel bridge base surface, and then performing sand blasting to remove rust so that the cleanliness of the surface of the steel bridge base surface subjected to sand blasting and rust removal is Sa2.5 grade and the roughness is 50 microns;
s2, performing sand blasting and rust removing, and performing primer rolling coating within 120min to form a primer layer; wherein the primer is epoxy zinc-rich paint, and the using amount of the primer is 120g/m2；
S3, spraying a modified methyl methacrylate coating after the primer is cured, wherein the use amount of the modified methyl methacrylate coating is 1400g/m2(ii) a After curing, the mixture is cured againSpraying modified methyl methacrylate coating, wherein the dosage of the modified methyl methacrylate coating is 1400g/m2Forming a waterproof layer after curing;
s4, 170g/m2The adhesive is coated on the waterproof layer in a scraping mode to form the bonding layer.
Example 5
A steel bridge deck pavement structure comprises a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 57: 41: 2.3;
the component A comprises the following raw materials in parts by weight: 51 parts of methyl methacrylate resin, 20 parts of butyl methacrylate, 12 parts of isooctyl acrylate, 15 parts of cyanate ester resin, 1.8 parts of anti-precipitation auxiliary agent, 5 parts of pigment, 9.3 parts of illite powder, 16 parts of aluminum silicate fiber, 4 parts of cordierite, 14 parts of silicon carbide whisker, 0.18 part of benzotriazole ultraviolet absorbent UV-3260.3 part, 2920.42 parts of hindered amine light stabilizer, 0.18 part of phenylthiourea, 0.26 part of N, N-dimethylaniline and 0.005 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 38 parts of methyl methacrylate resin, 20 parts of butyl methacrylate, 12 parts of isooctyl acrylate, 15 parts of modified methyl methacrylate resin, 10 parts of MQ silicon resin, 1.7 parts of anti-precipitation auxiliary agent, 4 parts of pigment, 3 parts of hexaphenyl cyclotrisilazane, 13 parts of sepiolite, 4.8 parts of nano silicon dioxide, 20 parts of layered aluminum phosphate, UV-3260.18 parts of benzotriazole ultraviolet absorbent, 2920.42 parts of hindered amine light stabilizer and 0.9 part of coupling agent;
the component C is a curing agent;
in the component A and the component B, the anti-settling auxiliary agent is organic bentonite MP250 and an anti-settling agent MT6650 in a weight ratio of 1: 3;
in the component A and the component B, the pigment is phthalocyanine blue;
the length of the silicon carbide whisker is 15-25 mu m, and the diameter is 30-80 nm;
the coupling agent is dodecyl trimethoxy silane and N- (beta-aminoethyl) -gamma-aminopropyl trimethoxy silane in a weight ratio of 1: 13;
the curing agent comprises dibenzoyl peroxide and methyl ethyl ketone peroxide according to a weight ratio of 1: 2.3 of a mixture;
the preparation method of the modified methyl methacrylate resin comprises the following steps: adding a silane coupling agent KH-560 into acetone, adjusting the pH value to 3, stirring and hydrolyzing at room temperature, adding carbon nano tube/silicon dioxide composite particles, removing the silane coupling agent KH-560 and the acetone after ultrasonic oscillation, and drying to obtain modified composite particles; mixing dimethyl sulfoxide, alpha-methylpyridine and modified composite particles, adding an initiator BPO after ultrasonic oscillation, heating to 72 ℃, dropwise adding a mixture of methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate at 72 ℃, stirring and reacting at the constant temperature of 72 ℃ for 50min after dropwise adding, and performing post-treatment after the reaction to obtain the modified methyl methacrylate resin; wherein, the weight ratio of the silane coupling agent KH-560 to the carbon nano tube/silicon dioxide composite particles is 17: 80; the weight ratio of the modified composite particles, methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate is 3: 51: 2: 1.7: 2.
the invention also provides a paving process of the steel bridge deck pavement structure, which comprises the following steps:
s1, polishing and cleaning the surface of the steel bridge base surface, and then performing sand blasting to remove rust so that the cleanliness of the surface of the steel bridge base surface subjected to sand blasting and rust removal is Sa2.5 grade and the roughness is 100 microns;
s2, performing sand blasting and rust removing, and performing primer rolling coating within 30min to form a primer layer; wherein the primer is epoxy zinc-rich paint, and the using amount of the primer is 150g/m2；
S3, spraying modified methyl methacrylate coating after the primer is cured, wherein the use amount of the modified methyl methacrylate coating is 1000g/m2(ii) a Spraying the modified methyl methacrylate coating again after curing,wherein the dosage of the modified methyl methacrylate coating is 1400g/m2Forming a waterproof layer after curing;
s4, 130g/m2The adhesive is coated on the waterproof layer in a scraping mode to form the bonding layer.
Example 6
A steel bridge deck pavement structure comprises a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 50: 49: 1.7;
the component A comprises the following raw materials in parts by weight: 53 parts of methyl methacrylate resin, 18 parts of butyl methacrylate, 10 parts of isooctyl acrylate, 9 parts of cyanate ester resin, 2 parts of anti-precipitation auxiliary agent, 4 parts of pigment, 15 parts of illite powder, 8 parts of aluminum silicate fiber, 12.8 parts of cordierite, 8.7 parts of silicon carbide whisker, 8 parts of benzotriazole ultraviolet absorbent UV-3260.8 parts, 2920.18 parts of hindered amine light stabilizer, 0.52 part of phenylthiourea, 0.4 part of N, N-dimethylaniline and 0.007 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 29 parts of methyl methacrylate resin, 22 parts of butyl methacrylate, 9 parts of isooctyl acrylate, 12 parts of modified methyl methacrylate resin, 9 parts of MQ silicon resin, 1.1 parts of anti-precipitation auxiliary agent, 5 parts of pigment, 4.2 parts of hexaphenyl cyclotrisilazane, 6 parts of sepiolite, 9 parts of nano silicon dioxide, 10 parts of layered aluminum phosphate, UV-3260.45 parts of benzotriazole ultraviolet absorbent, 2920.27 parts of hindered amine light stabilizer and 1.8 parts of coupling agent;
the component C is a curing agent;
wherein the primer layer is an epoxy zinc-rich paint layer; the waterproof layer is of a double-layer structure;
in the component A and the component B, the anti-settling auxiliary agent is organic bentonite MP250 and an anti-settling agent MT6650 in a weight ratio of 1: 3.8 of a mixture;
in the component A and the component B, the pigment is iron black;
the length of the silicon carbide whisker is 15-25 mu m, and the diameter is 30-80 nm;
the coupling agent is dodecyl trimethoxy silane and N- (beta-aminoethyl) -gamma-aminopropyl trimethoxy silane in a weight ratio of 1: 7.8 of a mixture;
the curing agent comprises dibenzoyl peroxide and methyl ethyl ketone peroxide according to a weight ratio of 1: 3.2 of a mixture;
the preparation method of the modified methyl methacrylate resin comprises the following steps: adding a silane coupling agent KH-560 into acetone, adjusting the pH value to 3.5, stirring at room temperature for hydrolysis, adding carbon nano tube/silicon dioxide composite particles, removing the silane coupling agent KH-560 and acetone after ultrasonic oscillation, and drying to obtain modified composite particles; mixing dimethyl sulfoxide, alpha-methylpyridine and modified composite particles, adding an initiator BPO after ultrasonic oscillation, heating to 74 ℃, dropwise adding a mixture of methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate at 74 ℃, stirring and reacting at the constant temperature of 74 ℃ for 55min after dropwise adding, and performing post-treatment after the reaction to obtain the modified methyl methacrylate resin; wherein, the weight ratio of the silane coupling agent KH-560 to the carbon nano tube/silicon dioxide composite particles is 21: 58; the weight ratio of the modified composite particles, methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate is 5: 39: 4: 0.9: 3.
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A bridge deck pavement structure of a steel bridge is characterized by comprising a primer layer, a waterproof layer and an adhesive layer which are sequentially coated on the surface of a steel bridge base surface from bottom to top;
wherein the waterproof layer is formed by spraying modified methyl methacrylate coating; the modified methyl methacrylate coating consists of a component A, a component B and a component C, wherein the weight ratio of the component A to the component B to the component C is 43-60: 40-50: 1-3;
the component A comprises the following raw materials in parts by weight: 45-57 parts of methyl methacrylate resin, 10-25 parts of butyl methacrylate, 8-15 parts of isooctyl acrylate, 8-17 parts of cyanate ester resin, 1.6-2.3 parts of anti-precipitation auxiliary agent, 3-6 parts of pigment, 9-17 parts of illite powder, 7-18 parts of aluminum silicate fiber, 3-15 parts of cordierite, 8-16 parts of silicon carbide whisker, 8-1 part of benzotriazole ultraviolet absorbent UV-3260.1, 2920.1-0.5 part of hindered amine light stabilizer, 0.1-0.6 part of phenylthiourea, 0.2-0.6 part of N, N-dimethylaniline and 0.005-0.007 part of polymerization inhibitor;
the component B comprises the following raw materials in parts by weight: 20-38 parts of methyl methacrylate resin, 10-25 parts of butyl methacrylate, 8-15 parts of isooctyl acrylate, 10-20 parts of modified methyl methacrylate resin, 6-13 parts of MQ silicon resin, 1-2 parts of anti-precipitation auxiliary agent, 3-6 parts of pigment, 2-5 parts of hexaphenylcyclotrisilazane, 4-16 parts of sepiolite, 2-11 parts of nano silicon dioxide, 9-22 parts of layered aluminum phosphate, UV-3260.1-0.6 part of benzotriazole ultraviolet absorbent, 2920.2-0.5 part of hindered amine light stabilizer and 0.6-2 parts of coupling agent;
the component C is a curing agent;
the preparation method of the modified methyl methacrylate resin comprises the following steps: adding a silane coupling agent KH-560 into acetone, adjusting the pH value to 3-4, stirring and hydrolyzing at room temperature, adding carbon nano tube/silicon dioxide composite particles, removing the silane coupling agent KH-560 and acetone after ultrasonic oscillation, and drying to obtain modified composite particles; mixing dimethyl sulfoxide, alpha-methylpyridine and modified composite particles, adding an initiator BPO after ultrasonic oscillation, heating to 70-75 ℃, dropwise adding a mixture of methyl methacrylate, alpha-methylstyrene, carborane containing unsaturated carbon-carbon double bonds and adamantane methacrylate at 70-75 ℃, stirring at constant temperature of 70-75 ℃ after dropwise adding for reaction for 45-60min, and carrying out post-treatment after the reaction is finished to obtain the modified methyl methacrylate resin.
2. The bridge deck pavement structure of claim 1, wherein the primer layer is an epoxy zinc-rich paint layer; the waterproof layer is of a double-layer structure.
3. The bridge deck pavement structure of the steel bridge according to claim 1, wherein in the component A and the component B, the anti-settling auxiliary agent is organic bentonite MP250 and an anti-settling agent MT6650 in a weight ratio of 1: 3-5.
4. The bridge deck pavement structure of claim 1, wherein in the component A and the component B, the pigment is one of iron black, titanium pigment, phthalocyanine blue and phthalocyanine green.
5. The bridge deck pavement structure of claim 1, wherein the silicon carbide whiskers are 15-25 μm in length and 30-80nm in diameter.
6. The bridge deck pavement structure of claim 1, wherein the coupling agent is dodecyl trimethoxy silane, N- (beta-aminoethyl) -gamma-aminopropyl trimethoxy silane in a weight ratio of 1: 7-14.
7. The bridge deck pavement structure of claim 1, wherein the curing agent comprises dibenzoyl peroxide and methyl ethyl ketone peroxide in a weight ratio of 1: 2-4.
8. The bridge deck pavement structure of the steel bridge according to claim 1, wherein in the preparation process of the modified methyl methacrylate resin, the weight ratio of the silane coupling agent KH-560 to the carbon nanotube/silica composite particles is 15-27: 50-100 parts of; the weight ratio of the modified composite particles, methyl methacrylate, alpha-methyl styrene, carborane containing unsaturated carbon-carbon double bonds and adamantyl methacrylate is 2-6: 35-55: 1-5: 0.5-2: 1-4.
9. A process for paving a deck pavement structure for steel bridges according to any one of claims 1 to 8, comprising the steps of:
s1, polishing and cleaning the surface of the steel bridge base surface, and then performing sand blasting to remove rust so that the cleanliness of the surface of the steel bridge base surface subjected to sand blasting and rust removal is Sa2.5 grade, and the roughness is 50-100 mu m;
s2, rolling and coating primer within 30-120min of sand blasting and rust removing to form a primer layer; wherein the primer is epoxy zinc-rich paint, and the dosage of the primer is 120-150g/m2；
S3, spraying the modified methyl methacrylate coating after the primer is cured, wherein the dosage of the modified methyl methacrylate coating is 1000-1400g/m2(ii) a Spraying the modified methyl methacrylate coating again after curing, wherein the dosage of the modified methyl methacrylate coating is 1000-1400g/m2Forming a waterproof layer after curing;
s4, 170g/m at 130-2The adhesive is coated on the waterproof layer in a scraping mode to form the bonding layer.
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| CN101805532A (en) * | 2010-04-02 | 2010-08-18 | 株洲时代新材料科技股份有限公司 | Bi-component methyl methacrylate waterproof paint |
| CN203923901U (en) * | 2013-10-31 | 2014-11-05 | 重庆特铺路面工程技术有限公司 | A kind of Steel Bridge Deck pouring formula resin concrete paving structure |
| CN108610699B (en) * | 2016-12-12 | 2021-01-05 | 中路交建(北京)工程材料技术有限公司 | Methacrylic resin marking paint and preparation method thereof |
| CN207047689U (en) * | 2017-04-27 | 2018-02-27 | 重庆鹏方交通科技股份有限公司 | A kind of novel chemically-reactive resin Waterproof layer paving structure for steel deck |
| CN108192403B (en) * | 2018-01-23 | 2020-04-17 | 永星化工(上海)有限公司 | Solvent type zinc-aluminum coating |
| KR101975799B1 (en) * | 2018-07-05 | 2019-05-09 | (주)세기건설안전엔지니어링 | A method of constructing a bridge waterproof layer using a hybrid type speedy elastic methyl methacrylate (MMA) resin and a basalt mesh geogrid to construct a road stretching joint side |
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