CN112430031A - Bridge deck waterproof material and preparation method thereof - Google Patents
Bridge deck waterproof material and preparation method thereof Download PDFInfo
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- CN112430031A CN112430031A CN202011274327.XA CN202011274327A CN112430031A CN 112430031 A CN112430031 A CN 112430031A CN 202011274327 A CN202011274327 A CN 202011274327A CN 112430031 A CN112430031 A CN 112430031A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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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
- 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
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
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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
- 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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
Abstract
The invention discloses a bridge deck waterproof material which is characterized by consisting of a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 10-15 parts of acrylic polyurethane emulsion, 8-12 parts of asphalt modified waterproof emulsion, 3-5 parts of carboxyl-terminated liquid fluororubber, 2-4 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.1-0.3 part of initiator, 70-80 parts of water and 0.5-1.5 parts of emulsifier; the powder is prepared from the following components in parts by weight: 80-90 parts of cement, 15-25 parts of silica sand, 3-5 parts of carborundum, 1-3 parts of nano boron fiber and 1-2 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1 (3-5). The invention also provides a preparation method of the bridge deck waterproof material. The bridge deck waterproof material provided by the invention has the advantages of good waterproofness, good aging resistance and durability, strong adhesion with a bridge deck, excellent high temperature resistance and performance stability and long service life.
Description
Technical Field
The invention relates to the technical field of waterproof materials, in particular to a bridge deck waterproof material and a preparation method thereof.
Background
With the rapid development of roads, particularly expressways, in China, the number of road bridges is increasing day by day, various bridges emerge like bamboo shoots in spring after rain, a great deal of convenience is brought to people for transportation, and a beautiful landscape is inlaid in modern cities. Meanwhile, the safety and the service life of the bridge attract the wide attention of the same lines at home and abroad.
In the bridge face use in the road at present, run into sleet weather, the rainwater sees through the surface that bituminous concrete surface course reachd cement concrete, because concrete water-proof effects is not good, and water continues to permeate into the inside of bridge floor cement concrete, and in the external low temperature freeze thawing period, because the frost heaving effect of inside moisture, concrete structure suffers destruction, and the concrete is loose, and then makes the bridge floor appear the pit slot destruction, has serious potential safety hazard. In order to solve the above problems, the conventional common technical means is to adopt a bridge deck waterproof material to protect the bridge from water.
The traditional bridge deck waterproof material is a waterproof coiled material which is prepared by taking chlorinated polyethylene resin as a main raw material, adding a plurality of chemical additives, and carrying out processes such as mixing, extrusion molding, vulcanization and the like, however, the bonding strength of the material and a cement concrete bridge deck is low, and under the action of vehicle load, the phenomena of pushing and disengaging of a pavement layer occur, so that surface waves, cracks, looseness, pits and other diseases are generated; other bridge deck waterproof materials on the market also have the defects of poor ageing resistance, further improved high temperature resistance and short service life.
For example, the chinese patent application No. 201310568946.3 relates to a deck waterproofing material. The technical scheme is as follows: the waterproof asphalt layer comprises a waterproof base material, an asphalt layer and an isolation film, wherein the waterproof base material is prepared by taking chlorinated polyethylene resin as a main raw material, adding a chemical additive and an auxiliary material, and processing the mixture through the working procedures of mixing, extrusion molding, vulcanization and the like, the asphalt layer is arranged on the two sides of the waterproof base material, and the isolation film covers the outer side surface of the asphalt layer. Because the asphalt layers are arranged on the two side surfaces of the waterproof base material forming the bridge deck, the asphalt layers can be well bonded with the cement construction base surface forming the bridge deck, the waterproof material and the base surface are ensured to be strict, reliable, seamless and seamless, and the waterproof effect is greatly improved; and the material asphalt layer can be tightly connected with the base surface and the bridge deck into a whole, so that the slippage and asynchronous trembling caused by vehicle rolling can be effectively reduced, and the service durability of the bridge is improved. However, the temperature stability of the unmodified asphalt layer is poor, and the asphalt layer is easy to crack in winter and soften in summer; the aging resistance is poor, and the durability is not easy to ensure; the maintenance of the flatness is poor, the flatness is degraded due to sedimentation, and the rutting is easily formed due to softening of the material, so that the service life of the pavement is greatly shortened due to the quality defects.
There is still a need in the art for a bridge deck waterproofing material having good water resistance, good aging resistance and durability, strong adhesion to bridge deck, excellent high temperature resistance and performance stability, and long service life.
Disclosure of Invention
The invention aims to provide a bridge deck waterproof material which is good in waterproofness, good in aging resistance and durability, strong in bonding property with a bridge deck, excellent in high-temperature resistance and performance stability and long in service life. Meanwhile, the invention also provides a preparation method of the bridge deck waterproof material, which is simple, convenient to construct, high in preparation efficiency, suitable for continuous large-scale production, economic in preparation process and environment-friendly.
In order to achieve the aim, the invention adopts the technical scheme that the bridge deck waterproof material is characterized by comprising a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 10-15 parts of acrylic polyurethane emulsion, 8-12 parts of asphalt modified waterproof emulsion, 3-5 parts of carboxyl-terminated liquid fluororubber, 2-4 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.1-0.3 part of initiator, 70-80 parts of water and 0.5-1.5 parts of emulsifier; the powder is prepared from the following components in parts by weight: 80-90 parts of cement, 15-25 parts of silica sand, 3-5 parts of carborundum, 1-3 parts of nano boron fiber and 1-2 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1 (3-5).
Preferably, the acrylic polyurethane emulsion is prepared according to the preparation method of acrylic polyurethane emulsion in chinese patent application No. 201410225342.3, patent example 1; the asphalt modified waterproof emulsion is prepared by the preparation method of the asphalt modified waterproof emulsion in Chinese patent application No. 201811245826.9 in patent example 1; the carboxyl-terminated liquid fluororubber is prepared by the preparation method of the carboxyl-terminated liquid fluororubber in the patent example 2 of the Chinese invention with the application number of 2018107382443.3.
Preferably, the preparation method of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil comprises the following steps: adding N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, vegetable oil and a catalyst into a reaction kettle, and stirring and reacting for 10-15 hours at the temperature of 30-50 ℃ under normal pressure.
Preferably, the mass ratio of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane to the vegetable oil to the catalyst is 0.1 (2-4) to (0.05-0.15).
Preferably, the vegetable oil is at least one of rapeseed oil, castor oil, palm oil, peanut oil and olive oil.
Preferably, the catalyst is prepared by mixing tetrabutyl titanate, tetrabutylammonium bromide and graphene quantum dots according to the mass ratio of 1:2 (0.03-0.05).
Preferably, the initiator is at least one of azobisisobutyronitrile and azobisisoheptonitrile; the emulsifier is one or more of sodium dodecyl benzene sulfonate, polyoxypropylene polyoxyethylene glycerol ether and nonylphenol polyoxyethylene ether.
Preferably, the cement is 42.5 ordinary portland cement; the particle size of the silica sand is 200-400 meshes; the grain diameter of the carborundum is 300-500 meshes; the diameter of the nano boron fiber is 300-500nm, and the length-diameter ratio is (12-15): 1.
Preferably, the functionally modified aluminum metal organic framework is a functionally modified aluminum metal organic framework prepared according to the preparation method of the functionally modified aluminum metal organic framework in patent example 1 of chinese invention with application number 201611096442.6.
Another object of the present invention is to provide a method for preparing the bridge deck waterproofing material, which is characterized by comprising the following steps: mixing the components of the powder in parts by weight, adding the mixture into a pulverizer to pulverize, wherein the rotation speed of the pulverizer is 900-; mixing the components of the liquid component, adding the mixture into a stirring kettle, and stirring at a low speed of 250 and 450 revolutions per minute for 12-20min to obtain a mixture B; and adding the mixture B into the mixture A, and uniformly mixing to obtain the bridge deck waterproof material.
The preparation method of the bridge deck waterproof material provided by the invention is simple, convenient to construct, high in preparation efficiency, suitable for continuous large-scale production, and economical and environment-friendly in preparation process.
The bridge deck waterproof material provided by the invention overcomes the defects that the traditional bridge deck waterproof material has low bonding strength with a cement concrete bridge deck, and a pavement layer is pushed and vacuated under the action of vehicle load, so that surface waves, cracks, looseness, pits and other diseases are generated; other bridge deck waterproof materials on the market also have the defects of poor ageing resistance, further improved high temperature resistance and short service life; through the synergistic effect of the components, the prepared bridge deck waterproof material has the advantages of good waterproofness, good aging resistance and durability, strong adhesion with the bridge deck, excellent high temperature resistance and performance stability and long service life.
The bridge deck waterproof material provided by the invention is composed of liquid components and powder, combines the characteristics of high elasticity of organic materials and good durability of inorganic materials, and forms a high-strength tough waterproof coating after being coated on a bridge deck. The liquid component is prepared from acrylic polyurethane emulsion, asphalt modified waterproof emulsion, carboxyl-terminated liquid fluororubber and N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, combines the advantages of polyurethane, asphalt, ester, fluororubber and vegetable oil which are waterproof materials, and ensures that the polyurethane, asphalt, ester, fluororubber and vegetable oil have stable and good performance, better comprehensive performance and effectively improved waterproof performance through selection of proper proportion.
According to the bridge deck waterproof material provided by the invention, under the action of an initiator, unsaturated olefinic bonds on acrylic polyurethane emulsion, asphalt modified waterproof emulsion and N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil can undergo a free radical copolymerization reaction to form a three-dimensional network structure, so that the comprehensive performance of the bridge deck waterproof material is effectively improved; so that the waterproof performance, the aging resistance, the durability, the annual high-temperature performance and the performance stability are better. Vegetable oil introduces alkenyl through modification to provide reaction sites for subsequent crosslinking, and also introduces an ethoxysilane structure which can be compatibly connected with powder through a bridging effect and can also enhance the bonding property of the ethoxysilane structure with a bridge deck. But also can enhance the dispersion uniformity.
The bridge deck waterproof material provided by the invention has the advantages that cement, silica sand and carborundum are coordinated, so that the bridge deck waterproof material is good in bonding property with a base material, strong in bonding property and good in comprehensive performance. The addition of the nano boron fiber can play a role in water resistance and permeability resistance, and the functional modification of the aluminum metal organic framework can enhance the water resistance and the compatibility among all components, thereby improving the comprehensive performance of the waterproof material.
Detailed Description
The following detailed description of preferred embodiments of the invention will be made.
The bridge deck waterproof material is characterized by comprising a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 10-15 parts of acrylic polyurethane emulsion, 8-12 parts of asphalt modified waterproof emulsion, 3-5 parts of carboxyl-terminated liquid fluororubber, 2-4 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.1-0.3 part of initiator, 70-80 parts of water and 0.5-1.5 parts of emulsifier; the powder is prepared from the following components in parts by weight: 80-90 parts of cement, 15-25 parts of silica sand, 3-5 parts of carborundum, 1-3 parts of nano boron fiber and 1-2 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1 (3-5).
The acrylic polyurethane emulsion is prepared by the preparation method of the acrylic polyurethane emulsion in the Chinese patent application No. 201410225342.3 in the embodiment 1; the asphalt modified waterproof emulsion is prepared by the preparation method of the asphalt modified waterproof emulsion in Chinese patent application No. 201811245826.9 in patent example 1; the carboxyl-terminated liquid fluororubber is prepared by the preparation method of the carboxyl-terminated liquid fluororubber in the patent example 2 of the Chinese invention with the application number of 2018107382443.3.
The preparation method of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil comprises the following steps: adding N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, vegetable oil and a catalyst into a reaction kettle, and stirring and reacting for 10-15 hours at the temperature of 30-50 ℃ under normal pressure.
The mass ratio of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane to the vegetable oil to the catalyst is 0.1 (2-4) to 0.05-0.15.
The vegetable oil is at least one of rapeseed oil, castor oil, palm oil, peanut oil and olive oil.
The catalyst is prepared by mixing tetrabutyl titanate, tetrabutyl ammonium bromide and graphene quantum dots according to the mass ratio of 1:2 (0.03-0.05).
The initiator is at least one of azobisisobutyronitrile and azobisisoheptonitrile; the emulsifier is one or more of sodium dodecyl benzene sulfonate, polyoxypropylene polyoxyethylene glycerol ether and nonylphenol polyoxyethylene ether.
The cement is 42.5 ordinary portland cement; the particle size of the silica sand is 200-400 meshes; the grain diameter of the carborundum is 300-500 meshes; the diameter of the nano boron fiber is 300-500nm, and the length-diameter ratio is (12-15): 1.
The functional modified aluminum metal organic framework is prepared according to the preparation method of the functional modified aluminum metal organic framework in the patent embodiment 1 of the Chinese invention with the application number of 201611096442.6.
Another object of the present invention is to provide a method for preparing the bridge deck waterproofing material, which is characterized by comprising the following steps: mixing the components of the powder in parts by weight, adding the mixture into a pulverizer to pulverize, wherein the rotation speed of the pulverizer is 900-; mixing the components of the liquid component, adding the mixture into a stirring kettle, and stirring at a low speed of 250 and 450 revolutions per minute for 12-20min to obtain a mixture B; and adding the mixture B into the mixture A, and uniformly mixing to obtain the bridge deck waterproof material.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
(1) the preparation method of the bridge deck waterproof material provided by the invention is simple, convenient to construct, high in preparation efficiency, suitable for continuous large-scale production, and economical and environment-friendly in preparation process.
(2) The bridge deck waterproof material provided by the invention overcomes the defects that the traditional bridge deck waterproof material has low bonding strength with a cement concrete bridge deck, and a pavement layer is pushed and vacuated under the action of vehicle load, so that surface waves, cracks, looseness, pits and other diseases are generated; other bridge deck waterproof materials on the market also have the defects of poor ageing resistance, further improved high temperature resistance and short service life; through the synergistic effect of the components, the prepared bridge deck waterproof material has the advantages of good waterproofness, good aging resistance and durability, strong adhesion with the bridge deck, excellent high temperature resistance and performance stability and long service life.
(3) The bridge deck waterproof material provided by the invention is composed of liquid components and powder, combines the characteristics of high elasticity of organic materials and good durability of inorganic materials, and forms a high-strength tough waterproof coating after being coated on a bridge deck. The liquid component is prepared from acrylic polyurethane emulsion, asphalt modified waterproof emulsion, carboxyl-terminated liquid fluororubber and N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, combines the advantages of polyurethane, asphalt, ester, fluororubber and vegetable oil which are waterproof materials, and ensures that the polyurethane, asphalt, ester, fluororubber and vegetable oil have stable and good performance, better comprehensive performance and effectively improved waterproof performance through selection of proper proportion.
(4) According to the bridge deck waterproof material provided by the invention, under the action of an initiator, unsaturated olefinic bonds on acrylic polyurethane emulsion, asphalt modified waterproof emulsion and N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil can undergo a free radical copolymerization reaction to form a three-dimensional network structure, so that the comprehensive performance of the bridge deck waterproof material is effectively improved; so that the waterproof performance, the aging resistance, the durability, the annual high-temperature performance and the performance stability are better. Vegetable oil introduces alkenyl through modification to provide reaction sites for subsequent crosslinking, and also introduces an ethoxysilane structure which can be compatibly connected with powder through a bridging effect and can also enhance the bonding property of the ethoxysilane structure with a bridge deck. But also can enhance the dispersion uniformity.
(5) The bridge deck waterproof material provided by the invention has the advantages that cement, silica sand and carborundum are coordinated, so that the bridge deck waterproof material is good in bonding property with a base material, strong in bonding property and good in comprehensive performance. The addition of the nano boron fiber can play a role in water resistance and permeability resistance, and the functional modification of the aluminum metal organic framework can enhance the water resistance and the compatibility among all components, thereby improving the comprehensive performance of the waterproof material. In the preparation process of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, the catalyst is not strong acid or strong base, so that after the reaction is finished, the catalyst does not need to be subjected to post-treatment, the catalyst can be directly added into the bridge deck waterproof material, and impurities of the catalyst have no negative influence on the performance of the waterproof material.
Example 1
Embodiment 1 provides a bridge deck waterproof material, which is characterized by comprising a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 10 parts of acrylic polyurethane emulsion, 8 parts of asphalt modified waterproof emulsion, 3 parts of carboxyl-terminated liquid fluororubber, 2 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.1 part of initiator, 70 parts of water and 0.5 part of emulsifier; the powder is prepared from the following components in parts by weight: 80 parts of cement, 15 parts of silica sand, 3 parts of carborundum, 1 part of nano boron fiber and 1 part of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1:3.
The preparation method of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil comprises the following steps: adding N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, vegetable oil and a catalyst into a reaction kettle, and stirring and reacting for 10 hours at the temperature of 30 ℃ under normal pressure.
The mass ratio of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane to the vegetable oil to the catalyst is 0.1:2: 0.05; the vegetable oil is rapeseed oil; the catalyst is prepared by mixing tetrabutyl titanate, tetrabutylammonium bromide and graphene quantum dots according to the mass ratio of 1:2: 0.03.
The initiator is azobisisobutyronitrile; the emulsifier is sodium dodecyl benzene sulfonate.
The cement is 42.5 ordinary portland cement; the particle size of the silica sand is 200 meshes; the grain diameter of the carborundum is 300 meshes; the diameter of the nano boron fiber is 300nm, and the length-diameter ratio is 12: 1.
The preparation method of the bridge deck waterproof material is characterized by comprising the following steps of: mixing the components of the powder in parts by weight, adding the mixture into a grinder for grinding, wherein the rotating speed of the grinder is 900 revolutions per minute, and the time is 20min to obtain a mixture A; mixing the components of the liquid component, adding the mixture into a stirring kettle, and stirring at a low speed of 250 revolutions per minute for 12min to obtain a mixture B; and adding the mixture B into the mixture A, and uniformly mixing to obtain the bridge deck waterproof material.
Example 2
Embodiment 2 provides a bridge deck waterproof material, which has the same formulation and preparation method as those of embodiment 1, except that the bridge deck waterproof material is composed of a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 11 parts of acrylic polyurethane emulsion, 9 parts of asphalt modified waterproof emulsion, 3.5 parts of carboxyl-terminated liquid fluororubber, 2.5 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.15 part of initiator, 72 parts of water and 0.7 part of emulsifier; the powder is prepared from the following components in parts by weight: 83 parts of cement, 17 parts of silica sand, 3.5 parts of carborundum, 1.5 parts of nano boron fiber and 1.2 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1: 3.5.
Example 3
Embodiment 3 provides a bridge deck waterproof material, which has the same formulation and preparation method as those of embodiment 1, except that the bridge deck waterproof material is composed of a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 13 parts of acrylic polyurethane emulsion, 10 parts of asphalt modified waterproof emulsion, 4 parts of carboxyl-terminated liquid fluororubber, 3 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.2 part of initiator, 75 parts of water and 1 part of emulsifier; the powder is prepared from the following components in parts by weight: 85 parts of cement, 20 parts of silica sand, 4 parts of carborundum, 2 parts of nano boron fiber and 1.5 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1:4.
Example 4
Embodiment 4 provides a bridge deck waterproof material, which has the same formulation and preparation method as those of embodiment 1, except that the bridge deck waterproof material is composed of a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 14 parts of acrylic polyurethane emulsion, 11 parts of asphalt modified waterproof emulsion, 4.5 parts of carboxyl-terminated liquid fluororubber, 3.5 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.25 part of initiator, 78 parts of water and 1.4 parts of emulsifier; the powder is prepared from the following components in parts by weight: 88 parts of cement, 23 parts of silica sand, 4.5 parts of carborundum, 2.5 parts of nano boron fiber and 1.8 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1: 4.5.
Example 5
Embodiment 5 provides a bridge deck waterproof material, which has the same formulation and preparation method as those of embodiment 1, except that the bridge deck waterproof material is composed of a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 15 parts of acrylic polyurethane emulsion, 12 parts of asphalt modified waterproof emulsion, 5 parts of carboxyl-terminated liquid fluororubber, 4 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.3 part of initiator, 80 parts of water and 1.5 parts of emulsifier; the powder is prepared from the following components in parts by weight: 90 parts of cement, 25 parts of silica sand, 5 parts of carborundum, 3 parts of nano boron fiber and 2 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1: 5.
Comparative example 1
Comparative example 1 provides a deck waterproofing material having substantially the same formulation and preparation method as example 1, except that no acrylic urethane emulsion is added.
Comparative example 2
Comparative example 2 provides a deck waterproofing material having substantially the same formulation and preparation method as example 1, except that no asphalt-modified waterproofing emulsion is added.
Comparative example 3
Comparative example 3 provides a deck waterproofing material having substantially the same formulation and preparation method as in example 1, except that no carboxyl-terminated liquid fluororubber was added.
Comparative example 4
Comparative example 4 provides a bridge deck waterproofing material having substantially the same formulation and preparation method as in example 1, except that the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane-modified vegetable oil was not added.
Comparative example 5
Comparative example 5 provides a bridge deck waterproofing material, whose formulation and preparation method are substantially the same as those of example 1, except that a vegetable oil is used instead of the N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane-modified vegetable oil.
Comparative example 6
Comparative example 6 provides a deck waterproofing material having substantially the same formulation and preparation method as example 1, except that a functionally modified aluminum metal organic framework was not added.
In order to further illustrate the beneficial technical effects of the embodiment of the invention, the bridge deck waterproof materials of the embodiments 1 to 5 and the comparative examples 1 to 6 of the invention are respectively tested, the test results are shown in table 1, and the test method is compared with performance indexes required to be tested according to the standard JC/T975-2005 of waterproof coating for roads and bridges.
TABLE 1 bridge floor waterproofing Material physical Properties
| Test items | Impermeability (0.3MPa,30min) | Tensile Strength (MPa) | Retention ratio (%) of heat aged tensile strength of not less than | Retention (%) of salt-treated tensile strength of not less than | The bonding strength (MPa) is not less than |
| Example 1 | Is impervious to water | 3.75 | 93 | 95 | 2.28 |
| Example 2 | Is impervious to water | 3.78 | 95 | 96 | 2.36 |
| Example 3 | Is impervious to water | 3.83 | 96 | 96 | 2.43 |
| Example 4 | Is impervious to water | 3.87 | 97 | 97 | 2.51 |
| Example 5 | Is impervious to water | 3.92 | 99 | 98 | 2.64 |
| Comparative example 1 | Permeable to water | 2.98 | 80 | 82 | 1.86 |
| Comparative example 2 | Permeable to water | 3.12 | 83 | 85 | 1.55 |
| Comparative example 3 | Permeable to water | 3.24 | 79 | 80 | 1.79 |
| Comparative example 4 | Permeable to water | 2.90 | 82 | 83 | 1.90 |
| Comparative example 5 | Is impervious to water | 2.93 | 83 | 85 | 1.90 |
| Comparative example 6 | Permeable to water | 3.38 | 88 | 90 | 2.18 |
As can be seen from Table 1, the bridge deck waterproof material related to the embodiment of the invention has more excellent mechanical properties, waterproofness, thermal stability and salt resistance stability, and more excellent bonding performance, which is the result of the synergistic effect of the components.
The above-mentioned embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (8)
1. The bridge deck waterproof material is characterized by comprising a liquid component and powder, wherein the liquid component comprises the following components in parts by weight: 10-15 parts of acrylic polyurethane emulsion, 8-12 parts of asphalt modified waterproof emulsion, 3-5 parts of carboxyl-terminated liquid fluororubber, 2-4 parts of N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil, 0.1-0.3 part of initiator, 70-80 parts of water and 0.5-1.5 parts of emulsifier; the powder is prepared from the following components in parts by weight: 80-90 parts of cement, 15-25 parts of silica sand, 3-5 parts of carborundum, 1-3 parts of nano boron fiber and 1-2 parts of functionally modified aluminum metal organic framework; the mass ratio of the liquid component to the powder is 1 (3-5).
2. A bridge deck waterproofing material according to claim 1 wherein said N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane modified vegetable oil is prepared by a method comprising: adding N- (3-acryloyloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, vegetable oil and a catalyst into a reaction kettle, and stirring and reacting for 10-15 hours at the temperature of 30-50 ℃ under normal pressure.
3. The bridge deck waterproofing material according to claim 2, wherein the mass ratio of the N- (3-acryloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, the vegetable oil and the catalyst is 0.1 (2-4) to (0.05-0.15).
4. A bridge deck waterproofing material according to claim 2 wherein said vegetable oil is at least one of rapeseed oil, castor oil, palm oil, peanut oil, olive oil.
5. The bridge deck waterproof material of claim 2, wherein the catalyst is prepared by mixing tetrabutyl titanate, tetrabutylammonium bromide and graphene quantum dots according to a mass ratio of 1:2 (0.03-0.05).
6. A deck waterproofing material according to claim 1 wherein said initiator is at least one of azobisisobutyronitrile, azobisisoheptonitrile; the emulsifier is one or more of sodium dodecyl benzene sulfonate, polyoxypropylene polyoxyethylene glycerol ether and nonylphenol polyoxyethylene ether.
7. A deck waterproofing material according to claim 1 wherein said cement is 42.5 portland cement; the particle size of the silica sand is 200-400 meshes; the grain diameter of the carborundum is 300-500 meshes; the diameter of the nano boron fiber is 300-500nm, and the length-diameter ratio is (12-15): 1.
8. A process for the preparation of a deck waterproofing material according to any of claims 1 to 7 comprising the steps of: mixing the components of the powder in parts by weight, adding the mixture into a pulverizer to pulverize, wherein the rotation speed of the pulverizer is 900-; mixing the components of the liquid component, adding the mixture into a stirring kettle, and stirring at a low speed of 250 and 450 revolutions per minute for 12-20min to obtain a mixture B; and adding the mixture B into the mixture A, and uniformly mixing to obtain the bridge deck waterproof material.
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| CN101255304A (en) * | 2008-04-04 | 2008-09-03 | 张家界市桐发科技有限公司 | Tung oil modified JS waterproofing paint and preparation thereof |
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