CN106753136B - Steel bridge deck waterproof bonding layer material and preparation method thereof - Google Patents
Steel bridge deck waterproof bonding layer material and preparation method thereof Download PDFInfo
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- CN106753136B CN106753136B CN201611269453.XA CN201611269453A CN106753136B CN 106753136 B CN106753136 B CN 106753136B CN 201611269453 A CN201611269453 A CN 201611269453A CN 106753136 B CN106753136 B CN 106753136B
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention belongs to the technical field of road construction, and particularly relates to a steel bridge deck waterproof bonding layer material and a preparation method thereof. The preparation method comprises the following specific steps: preparing a stabilizer solution, preparing water-based epoxy emulsion containing the stabilizer by using a non-ionic epoxy emulsifier, and adding the non-ionic emulsifier to emulsify the asphalt to prepare the water-based epoxy emulsion. Compared with the prior art, the nonionic waterborne epoxy resin prepared by the preparation method is neutral, can be effectively applied to a steel bridge pavement layer structure, and the prepared waterproof bonding layer material is high in bonding strength and good in shearing resistance. The material not only keeps the excellent cohesiveness of the waterborne epoxy resin, but also overcomes the corrosion of the acidity of the existing waterborne epoxy emulsified asphalt to a steel bridge structure, and the emulsion has good stability, uniform size distribution and simple construction.
Description
Technical Field
The invention belongs to the technical field of road construction, and particularly relates to a steel bridge deck waterproof bonding layer material and a preparation method thereof.
Background
The steel bridge structure is used as a main form of a large-span bridge and belongs to research key points in the field of road construction at home and abroad. The paving technology of the large-span bridge is closely related to the service performance and the service life of the large-span bridge. The research work on the steel bridge deck pavement technology in foreign countries is earlier carried out, and a large amount of research is carried out in the field of large-span steel bridge structures.
With the rapid development of the traffic industry in China, various bridges are emerging continuously, and particularly, the bridge deck pavement technology of a large-span bridge becomes a technical problem in highway construction. In many reports, the diseases such as transition, shearing damage, hugging and the like of a pavement layer of a large and medium steel bridge in open traffic for one year often occur. One reason for this is that the bridge deck pavement design is not designed with waterproof bonding layers or the waterproof bonding layers have poor bonding performance. The quality of the bridge deck pavement depends on the performance and construction quality of the waterproof bonding layer material to a great extent.
At present, the commonly used bridge deck pavement waterproof bonding layer materials can be divided into two main categories: one is the paint-on type, such as various modified asphalt coatings and high molecular polymer waterproof binders, for example: SBS polymer modified asphalt paint. The other is a waterproof binding layer material of a roll type. The waterproof coiled material has convenient and fast construction and good waterproof effect. However, most of coiled materials need to be heated during construction, and the heating causes the coiled materials to seal a large amount of bubbles in the paving process, so that the coiled materials cannot be tightly combined with the bridge deck, and the bonding effect is poor. At present, most of waterproof bonding layer materials mainly use polymer modified asphalt, and the waterproof bonding layer materials have the advantages of good waterproofness, insufficient bonding strength and particularly obvious effect in a steel bridge structure.
In order to overcome the defects of the existing bonding layer materials, many researchers begin to research the waterproof bonding materials of the water-based epoxy asphalt, and the waterproof bonding materials have the advantages of high bonding strength, good waterproofness and high construction viscosity, and the defects that the existing emulsified asphalt mainly comprises cationic emulsified asphalt and the pH value is generally between 2 and 5. And the commonly used nonionic water-based epoxy emulsifier also adopts Lewis acids such as boron trifluoride diethyl etherate, anhydrous aluminum chloride, anhydrous zinc chloride and the like as catalysts, and finally the prepared water-based epoxy also has acidity. The acidic waterborne epoxy emulsified asphalt is easy to corrode a steel bridge structure in the steel bridge structure.
Disclosure of Invention
The invention provides a steel bridge deck waterproof bonding layer material and a preparation method thereof, the material not only keeps the excellent bonding property of aqueous epoxy resin, but also overcomes the corrosion of the acidity of the existing aqueous epoxy emulsified asphalt to a steel bridge structure, and the material has the advantages of good emulsion stability, uniform size distribution and simple construction.
The invention relates to a preparation method of a steel bridge deck waterproof bonding layer material, which comprises the following specific steps:
1) adding 2-4 parts by mass of an emulsion stabilizer into 40-50 parts by mass of water, heating and mechanically stirring in a water bath at 80 ℃ for 30min to obtain an emulsion stabilizer solution A with the mass fraction of the stabilizer of 5-8% for later use;
2) adding 1.6-5.25 parts by mass of nonionic waterborne epoxy emulsifier into 20-50 parts by mass of bisphenol A epoxy resin E44, and mechanically stirring at 70-75 ℃ for 30min at a stirring speed of 200-600 rpm to prepare an epoxy emulsifier-epoxy resin mixed solution B with 8-15% of nonionic waterborne epoxy emulsifier, wherein the content of the nonionic waterborne epoxy emulsifier is preferably 12%;
3) keeping the mixed solution A and the mixed solution B at 70-75 ℃, dropwise adding the solution A into the solution B at a speed of 2-3 parts by mass/min, mechanically stirring at a speed of 500-600 rpm, and continuously stirring for 1-3 hours under a constant temperature condition after the dropwise adding of the solution A is finished to prepare a water-based epoxy emulsion C;
4) weighing 0.09-0.22 part by mass of a nonionic emulsifier, adding the nonionic emulsifier into the C, and stirring at 65-70 ℃ and 200-600 rpm for 10-15 min to prepare an emulsifier-water-based epoxy mixture D;
5) adding the D into an emulsified asphalt machine, adjusting the emulsifying temperature to be 60-70 ℃, slowly adding 5-10 parts by mass of AH-90 asphalt at 110-120 ℃, wherein the adding speed of the asphalt is 1-2 parts by mass/min, ensuring that the content of the nonionic emulsifier is 1.8-2.2% of the mass of the asphalt, and preparing a component I of the steel bridge deck waterproof bonding layer after the emulsification is finished;
6) water-soluble modified polyamide emulsion with solid content of 30 percent is used as a component II of the waterproof bonding layer;
7) before use, the waterproof bonding layer I component and the waterproof bonding layer II component are mixed according to the mass ratio of 1.5-2: 1, and are uniformly stirred at the temperature of 25-40 ℃ to prepare the steel bridge deck waterproof bonding layer material.
The invention relates to a preparation method of a steel bridge deck waterproof bonding layer material, wherein an emulsion stabilizer in the step 1) is an emulsion delamination preventing agent EE; the nonionic emulsifier in the step 4) is one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyol fatty acid ester and polyol ester polyoxyethylene ether.
The invention relates to a preparation method of a steel bridge deck waterproof bonding layer material, which is a preparation method of a nonionic waterborne epoxy emulsifier in the step 2), and specifically comprises the following steps:
1) dissolving diethyl zinc in hexane under the protection of nitrogen to prepare a catalyst solution E with the concentration of 0.1 mol/L;
2) mixing bisphenol A epoxy resin E44 and polyethylene glycol 6000 according to the molar ratio of 1:1.05, heating to 80-90 ℃, keeping the temperature for 20-30 min, and stirring for 10min at the constant temperature under the mechanical stirring of 200-300 rpm to obtain a mixture F of E44 and PEG 6000;
3) keeping the temperature and the rotating speed of the F unchanged, introducing nitrogen to exhaust air in a reaction container, dropwise adding a catalyst solution corresponding to the mixture F, wherein the molar weight of the catalyst solution accounts for 2-3.5% of the total molar weight of the mixture F, under the protection of the nitrogen, keeping the rotating speed and the temperature unchanged, and reacting for 2-4 h to prepare an initial nonionic emulsifier G;
4) and (3) cooling the G liquid to 35-40 ℃, dropwise adding propionaldehyde with the molar weight being 2.1 times of that of diethyl zinc, stirring for 1h at constant temperature of 50rpm under the protection of nitrogen, increasing the temperature to 80 ℃, increasing the rotating speed to 300-400 rpm, and continuously stirring for 1-2 h to prepare the nonionic water-based epoxy emulsifier.
The invention relates to a preparation method of a steel bridge deck waterproof bonding layer material, which comprises the following specific nitrogen protection processes: the nitrogen enters the reactor after passing through the silicon dioxide dryer, and is discharged into the air after passing through the activated carbon adsorber by the reactor.
Compared with the prior art, the preparation method of the steel bridge deck waterproof bonding layer material has the following beneficial effects:
1) the aqueous epoxy resin emulsion adopted by the method is used as a dispersion medium for asphalt emulsification, and the prepared aqueous epoxy asphalt has good storage stability and uniform size;
2) the method for preparing the nonionic water-based epoxy emulsifier effectively avoids the acidity of the nonionic water-based epoxy emulsifier caused by catalyst residue, thereby solving the problem of application of the water-based epoxy coating in a steel bridge pavement;
3) the nonionic aqueous epoxy emulsifier prepared by the method avoids toxic substances of boron trifluoride gas and hydrogen chloride gas generated by decomposing boron trifluoride diethyl etherate and anhydrous aluminum chloride in the conventional synthesis of the nonionic epoxy emulsifier, and is beneficial to the safety of experimenters.
Drawings
FIG. 1 is a particle size distribution diagram of the aqueous epoxy resin emulsion obtained in example 1. FIG. 2 is a particle size distribution diagram of the stabilizer-added aqueous epoxy resin emulsion obtained in example 2. FIG. 3 is a particle size distribution diagram of the aqueous epoxy asphalt emulsion obtained in example 3. FIG. 4 is a particle size distribution diagram of the aqueous epoxy asphalt emulsion obtained in example 4. FIG. 5 is a scanning electron microscope image of the waterborne epoxy asphalt obtained in example 3.
Detailed Description
The present invention will be further described with reference to specific examples, but the scope of the present invention is not limited thereto.
Example 1
1. Preparation of nonionic aqueous epoxy emulsifier:
weighing 7.84g of epoxy resin E44 and 126g of polyethylene glycol 6000, adding into a four-neck flask, placing the four-neck flask into a water bath kettle at 85 ℃, installing a mechanical stirring device, keeping the temperature constant for 30min under the protection of nitrogen, starting the mechanical stirring device, setting the rotating speed to 300rpm, and stirring at the constant temperature for 10 min; titrating 12.15ml of 0.1mol/L diethyl zinc hexane solution by using a constant pressure titration funnel, and keeping the rotating speed and the temperature unchanged for reaction for 3 hours; cooling the liquid to 40 ℃, adding 185 mu l of propionaldehyde by using a liquid transfer gun, and reacting for 1h at constant temperature and the stirring speed of 50 rpm; and (3) increasing the temperature of the water bath kettle to 80 ℃, increasing the rotating speed to 400rpm, stirring for 1h, discharging, cooling to obtain a crystalline white solid, and heating to above 50 ℃ to restore the fluidity, wherein the prepared colorless transparent viscous liquid is the nonionic aqueous epoxy emulsifier.
2. Preparation of aqueous epoxy resin emulsion:
weighing 12g of nonionic aqueous epoxy resin emulsifier, adding the emulsifier into a 86g E44-containing three-neck flask, mechanically stirring the mixture for 30min at 70 ℃ and 600rpm, titrating 150g of deionized water by using a constant-pressure titration funnel at a dropping speed of 5ml/min, and continuously stirring the mixture for 1h under the conditions of constant temperature and constant rotating speed after the dropping is finished to obtain the aqueous epoxy resin emulsion.
The properties of the aqueous epoxy emulsion having a solids content of 40% prepared in this example are as follows:
pH: measuring by using pH precision test paper, wherein the pH value is 6.8-7.0;
viscosity: 13.5 mPa.s at 25 ℃ by a rotary viscometer;
granularity: the particle size distribution meter is used for measuring, the particle size distribution range is 0.371 mu m, and the main particle size distribution range is 0.12-0.95 mu m;
mechanical stability: 3500rpm, 30min, no delamination;
storage stability: more than or equal to 6 months;
freeze-thaw stability: standing at-18 deg.C for 2h, melting at 25 deg.C for 2h, and circulating for 5 times without layering emulsion;
electrolyte stability: adding 5% solid calcium chloride powder, standing for 48 hr, and not layering and coagulating;
thermal stability: standing at 40 deg.C for 20min, cooling to 25 deg.C, and circulating for 5 times without layering and coagulation.
Example 2
A nonionic epoxy emulsifier is prepared according to example 1, deionized water in the synthesis of the aqueous epoxy emulsion in example 1 is changed into an emulsion stabilizer solution with the same mass and the mass fraction of the stabilizer of 5%, and the other conditions are not changed, so that the aqueous epoxy resin emulsion containing the stabilizer is prepared.
The properties of the stabilizer-containing aqueous epoxy emulsion having a solids content of 43% prepared in this example are as follows:
pH: measuring by using pH precision test paper, wherein the pH value is 6.8-7.0;
viscosity: testing at 25 ℃ by a rotary viscometer, and measuring by 15.1mPa & s;
granularity: the particle size distribution is 0.395 mu m, and the main distribution range of the particle size is 0.14-1.012 mu m;
mechanical stability: 3500rpm, 30min, no delamination;
storage stability: more than or equal to 6 months;
freeze-thaw stability: standing at-18 deg.C for 2h, melting at 25 deg.C for 2h, and circulating for 5 times without layering emulsion;
electrolyte stability: adding 5% solid calcium chloride powder, standing for 48 hr, and not layering and coagulating;
thermal stability: standing at 40 deg.C for 20min, cooling to 25 deg.C, and circulating for 5 times without layering and coagulation.
Example 3
250g of an aqueous epoxy emulsion containing a stabilizer was prepared according to example 2; 0.3g of nonionic emulsifier peregal 15 is weighed and added into the waterborne epoxy emulsion, the mixture is stirred for 10min at 70 ℃ and 600rpm and then added into an asphalt emulsifier, 15g of shell tile AH-90(90# asphalt) at 110 ℃ is slowly added, the dropping speed is 3-5 g/min, and the waterborne epoxy emulsified asphalt emulsion is prepared after emulsification.
50g of water-soluble modified polyamide emulsion with the solid content of 30 percent and 100g of water-based epoxy emulsified asphalt emulsion are stirred for 20min to 30min at the temperature of 40 ℃ and the rpm of 200 to prepare the steel bridge deck waterproof bonding layer material.
The properties of the aqueous ring asphalt emulsion having a solids content of 46.5% prepared in this example are as follows:
pH: measuring by using pH precision test paper, wherein the pH value is 6.8-7.0;
viscosity: 31.9 mPa.s at 25 ℃ by a rotary viscometer;
granularity: the particle size distribution is measured by a particle size distribution instrument, the particle size distribution is 2.199 mu m, and the main particle size distribution range is 0.21-12.87 mu m;
mechanical stability: 2500rpm, 30min, no delamination;
storage stability: more than or equal to 1 month.
The bridge deck waterproof bonding layer material prepared by the embodiment has the following properties:
and (3) testing the adhesive force: 3.14MPa (25 ℃ pull strength);
shear strength: the shear strength test at 25 ℃ is 3.66 MPa;
surface drying time: 2.5h (at 25 ℃);
the actual drying time is as follows: 18h (at 25 ℃).
Example 4
250g of an aqueous epoxy emulsion containing a stabilizer was prepared according to example 2; weighing 0.3g of non-ionic emulsifier huperzia serrata type coumarate, adding the weighed non-ionic emulsifier huperzia serrata type coumarate into the aqueous epoxy emulsion, stirring the mixture for 10min at 70 ℃ and 600rpm, adding the mixture into an asphalt emulsifier, slowly adding 15g of shell tile AH-90(90# asphalt) at 110 ℃, dropwise adding the mixture at a speed of 3-5 g/min, and preparing the aqueous epoxy emulsified asphalt emulsion after emulsification.
50g of water-soluble modified polyamide emulsion with the solid content of 30 percent and 100g of water-based epoxy emulsified asphalt emulsion are stirred for 20min to 30min at the temperature of 40 ℃ and the rpm of 200 to prepare the steel bridge deck waterproof bonding layer material.
The properties of the aqueous ring asphalt emulsion having a solids content of 46.5% prepared in this example are as follows:
pH: measuring by using pH precision test paper, wherein the pH value is 6.8-7.0;
viscosity: a rotary viscometer at 25 ℃ for measuring 33.2mPa & s;
granularity: the particle size distribution is measured by a particle size distribution instrument, the particle size distribution range is 2.431 mu m, and the main particle size distribution range is 1.31-3.43 mu m;
mechanical stability: 2500rpm, 30min, no delamination;
storage stability: more than or equal to 1 month.
The bridge deck waterproof bonding layer material prepared by the embodiment has the following properties:
and (3) testing the adhesive force: 3.28MPa (25 ℃ pull strength);
shear strength: the shear strength test at 25 ℃ is 3.87 MPa;
surface drying time: 2.0h (at 25 ℃);
the actual drying time is as follows: 14h (at 25 ℃).
Claims (3)
1. The preparation method of the waterproof bonding layer material for the steel bridge deck is characterized by comprising the following specific steps of:
1) adding 2-4 parts by mass of an emulsion stabilizer into 40-50 parts by mass of water, and heating and mechanically stirring in a water bath at 80 ℃ for 30min to obtain an emulsion stabilizer solution A with the mass fraction of the stabilizer of 5-8% for later use;
2) adding 1.6-5.25 parts by mass of a nonionic waterborne epoxy emulsifier into 20-50 parts by mass of bisphenol A epoxy resin E44, and mechanically stirring at 70-75 ℃ for 30min at a stirring speed of 200-600 rpm to prepare an epoxy emulsifier-epoxy resin mixed solution B with the content of the nonionic waterborne epoxy emulsifier of 8-15%;
3) keeping the mixed solution A and the mixed solution B at 70-75 ℃, dropwise adding the solution A into the solution B at a speed of 2-3 parts by mass/min, mechanically stirring at a speed of 500-600 rpm, and continuously stirring for 1-3 hours under a constant temperature condition after the dropwise adding of the solution A is finished to prepare a water-based epoxy emulsion C;
4) weighing 0.09-0.22 part by mass of a nonionic emulsifier, adding the nonionic emulsifier into the mixture C, and stirring at 65-70 ℃ and a stirring speed of 200-600 rpm for 10-15 min to prepare an emulsifier-water-based epoxy mixture D;
5) adding the D into an emulsified asphalt machine, adjusting the emulsifying temperature to be 60-70 ℃, slowly adding 5-10 parts by mass of 110-120 ℃ AH-90 asphalt at the asphalt adding speed of 1-2 parts by mass/min, ensuring the content of a nonionic emulsifier to be 1.8-2.2% of the mass of the asphalt, and preparing a component I of the steel bridge deck waterproof bonding layer after emulsification;
6) water-soluble modified polyamide emulsion with solid content of 30 percent is used as a component II of the waterproof bonding layer;
7) before use, the waterproof bonding layer I component and the waterproof bonding layer II component are mixed according to the mass ratio of 1.5-2: 1, and are uniformly stirred at 25-40 ℃ to prepare a steel bridge deck waterproof bonding layer material;
the preparation method of the nonionic water-based epoxy emulsifier in the step 2) comprises the following specific steps:
1) dissolving diethyl zinc in hexane under the protection of nitrogen to prepare a catalyst solution E with the concentration of 0.1 mol/L;
2) mixing bisphenol A epoxy resin E44 and polyethylene glycol 6000 according to a molar ratio of 1:1.05, heating to 80-90 ℃, keeping the temperature for 20-30 min, and stirring at a constant temperature of 200-300 rpm for 10min under mechanical stirring to obtain a mixture F of E44 and PEG 6000;
3) keeping the temperature and the rotating speed of the F unchanged, introducing nitrogen to exhaust air in a reaction container, dropwise adding a corresponding catalyst solution with the mol amount of diethyl zinc accounting for 2-3.5% of the total mol amount of the mixture F under the protection of the nitrogen, keeping the rotating speed and the temperature unchanged, and reacting for 2-4 h to obtain an initial nonionic emulsifier G;
4) and (3) cooling the G liquid to 35-40 ℃, dropwise adding propionaldehyde with the molar weight being 2.1 times of that of diethyl zinc, stirring at constant temperature of 50rpm for 1h under the protection of nitrogen, increasing the temperature to 80 ℃, increasing the rotation speed to 300-400 rpm, and continuously stirring for 1-2 h to prepare the nonionic water-based epoxy emulsifier.
2. The method for preparing the waterproof bonding layer material for the steel bridge deck according to claim 1, wherein the emulsion stabilizer in the step 1) is an emulsion delamination inhibitor EE; the nonionic emulsifier in the step 4) is one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyol fatty acid ester and polyol ester polyoxyethylene ether.
3. The preparation method of the waterproof bonding layer material for the steel bridge deck according to claim 1, wherein the nitrogen protection comprises the following specific steps: the nitrogen enters the reactor after passing through the silicon dioxide dryer, and is discharged into the air after passing through the activated carbon adsorber by the reactor.
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| CN113916689B (en) * | 2021-10-27 | 2023-09-19 | 北京建筑大学 | Method for determining strength of waterproof bonding layer paved on polymer concrete steel bridge deck |
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| CN102229701A (en) * | 2011-05-13 | 2011-11-02 | 湖南大学 | Non-ionic aqueous epoxy resin emulsion and its preparation method |
| CN102464890A (en) * | 2010-11-04 | 2012-05-23 | 中国石油化工股份有限公司 | Aqueous asphalt-based epoxy resin waterproof material composition and preparation process thereof |
| CN104556906A (en) * | 2014-12-31 | 2015-04-29 | 孙政 | Worn ultrathin road surface material and preparation method thereof |
| CN105064207A (en) * | 2015-07-29 | 2015-11-18 | 山东省交通科学研究院 | High-performance steel bridge deck paving structure |
| CN105860439A (en) * | 2016-06-07 | 2016-08-17 | 长安大学 | Material for treating pavement segregation |
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| CN102464890A (en) * | 2010-11-04 | 2012-05-23 | 中国石油化工股份有限公司 | Aqueous asphalt-based epoxy resin waterproof material composition and preparation process thereof |
| CN102173663A (en) * | 2011-01-10 | 2011-09-07 | 武汉理工大学 | Waterborne epoxy modified emulsified asphalt concrete for steel bridge surface and preparation method thereof |
| CN102229701A (en) * | 2011-05-13 | 2011-11-02 | 湖南大学 | Non-ionic aqueous epoxy resin emulsion and its preparation method |
| CN104556906A (en) * | 2014-12-31 | 2015-04-29 | 孙政 | Worn ultrathin road surface material and preparation method thereof |
| CN105064207A (en) * | 2015-07-29 | 2015-11-18 | 山东省交通科学研究院 | High-performance steel bridge deck paving structure |
| CN105860439A (en) * | 2016-06-07 | 2016-08-17 | 长安大学 | Material for treating pavement segregation |
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Inventor after: Mu Jianqing Inventor after: Cai Lina Inventor after: Xie Bangzhu Inventor after: Liu Zhe Inventor after: Guo Donghong Inventor after: Liu Gao Inventor after: Pang Jinyu Inventor after: Song Jiehua Inventor after: He Shengyi Inventor before: Mu Jianqing Inventor before: He Shengyi Inventor before: Cai Lina Inventor before: Xie Bangzhu Inventor before: Pang Jinyu Inventor before: Liu Gao Inventor before: Liu Zhe Inventor before: Guo Donghong Inventor before: Song Jiehua |
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