CN110564348B - Epoxy crack pouring material for asphalt pavement repair and preparation method thereof - Google Patents
Epoxy crack pouring material for asphalt pavement repair and preparation method thereof Download PDFInfo
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- CN110564348B CN110564348B CN201910899708.8A CN201910899708A CN110564348B CN 110564348 B CN110564348 B CN 110564348B CN 201910899708 A CN201910899708 A CN 201910899708A CN 110564348 B CN110564348 B CN 110564348B
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
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Abstract
The invention discloses an epoxy crack pouring material for asphalt pavement repair and a preparation method thereof, wherein the crack pouring material consists of A, B, A comprises bisphenol A epoxy resin, epoxy compound active diluent and silane coupling agent, B comprises modified fatty amine curing agent, phenolic aldehyde amine curing agent, polysulfide rubber toughening agent and defoaming agent, the mass ratio of A, B is 100 (40-45), A, B is prepared and stored respectively, and the components are mixed when used on site. The crack pouring material has the characteristics of high bonding strength, good fluidity, good toughness, normal-temperature construction, high curing speed and the like, avoids the traditional construction method for heating and pouring the crack in the crack pouring process of the asphalt pavement, is simple to operate and low in energy consumption, can effectively penetrate into the deep part of the crack, realizes quick curing, ensures that two walls of the crack are completely bonded after curing, is not easy to generate secondary damage, and greatly improves the efficiency of repairing the crack of the asphalt pavement and the effect after repairing.
Description
Technical Field
The invention belongs to the technical field of road engineering materials, and relates to an epoxy crack pouring material for repairing an asphalt pavement and a preparation method thereof.
Background
Asphalt pavements have been widely used in highway and municipal road construction and will still represent the mainstream trend in future pavement. Although asphalt pavement has excellent service performance, some early diseases still inevitably occur, wherein cracks are the most important disease form. The crack mainly divide into load type crack and the non-load type crack that natural environment leads to that produce under the car load effect, if not repair in time after the road surface crack produces, crack department very easily produces stress concentration, leads to the production of secondary crack, when the rainwater infiltrates the crack after, easily leads to more serious diseases such as purt thick liquid, pot hole under the effect of car load and hydraulic pressure. The cracks are repaired in time, so that the pavement deterioration rate can be effectively delayed, and the service life of the pavement is prolonged.
At present, hot asphalt and emulsified asphalt are mainly adopted in China to repair cracks of asphalt pavement. The asphalt needs to be heated to keep the fluidity in the crack pouring process, but the aging of the asphalt is accelerated in the continuous heating process, harmful substances such as benzene, naphthalene, pyridine and the like are volatilized, the viscosity of the hot asphalt is high, and the pouring rate is low; on the other hand, asphalt has high temperature sensitivity, is easy to soften at high temperature and brittle fracture at low temperature, has general bonding performance and poor repairing quality. The emulsified asphalt is usually used for emergency repair of pavements, although the emulsified asphalt can be used at normal temperature, the viscosity of the emulsified asphalt is low, and the emulsified asphalt has good permeability in cracks, but with the occurrence of emulsion breaking reaction, the emulsified asphalt can generate large volume shrinkage, and the bonding property is poor, so that repaired positions can be cracked again frequently.
The patent CN108384497A uses a cardanol modified epoxy resin with low viscosity, and is matched with an ester diluent to obtain a low-viscosity crack pouring adhesive, but the cured product has low elongation at break and poor deformation adaptability, while an asphalt pavement belongs to a flexible pavement, a crack pouring material and the pavement are deformed synchronously under the action of load, and the crack pouring adhesive cannot adapt to the use environment with large strain in the pavement; according to the road surface crack pouring material provided by the patent CN106810129, a compatilizer is adopted to enable emulsified asphalt to be compatible with water-based epoxy resin, but the water-based epoxy resin is solidified and the emulsified asphalt is demulsified, so that large volume shrinkage is generated, the bonding strength is low, and the crack pouring quality is influenced.
Disclosure of Invention
Aiming at the defects of the performance of the existing asphalt pavement crack pouring material, the invention provides the epoxy crack pouring material for repairing the asphalt pavement, and the crack pouring material has the advantages of high bonding strength, good fluidity and toughness, high curing speed and capability of performing crack pouring at normal temperature.
The invention also provides a preparation method of the epoxy crack pouring material for asphalt pavement repair, and the preparation method is simple, safe and convenient to operate.
The technical scheme adopted by the invention is that the epoxy crack pouring material for repairing the asphalt pavement is prepared from A, B, wherein the mass ratio of A, B is 100: 40-45;
the A comprises the following raw materials in percentage by mass:
69 to 73 percent of bisphenol A type epoxy resin
25 to 30 percent of epoxy compound active diluent
1 to 2 percent of silane coupling agent
The B comprises the following raw materials in percentage by mass:
further, the bisphenol A type epoxy resin is E-51.
Further, the epoxy compound reactive diluent is C12-14 alkyl glycidyl ether.
Further, the silane coupling agent is gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane.
Further, the modified fatty amine curing agent is a modified fatty amine A102 curing agent.
Further, the phenolic aldehyde amine curing agent is phenolic aldehyde amine 910 curing agent.
Further, the polysulfide rubber toughening agent is low-molecular-weight liquid polysulfide rubber JYL-121.
Further, the tertiary amine curing accelerator is 2,4, 6-tris (dimethylaminomethyl) phenol.
Further, the defoaming agent is a silicon-fluorine ketone compound XYS-2333.
The preparation method of the epoxy crack pouring material for repairing the asphalt pavement comprises the following steps:
step S1: preparation of A: weighing the raw materials A according to the formula, sequentially loading the raw materials A into a barrel, clockwise stirring the raw materials A and B for 10 to 15 minutes by using a torch stirring drill at the temperature of between 50 and 60 ℃ until the components are uniformly mixed, and subpackaging, sealing and storing the components after stirring;
step S2: b, preparation: weighing the raw materials B according to the formula, sequentially loading the raw materials B into a barrel, clockwise stirring the raw materials B for 5 to 10 minutes by using a manual stirring drill at the temperature of between 18 and 22 ℃ up and down until the mixed slurry is uniformly light yellow, and subpackaging, sealing and storing the slurry after stirring;
step S3: when used on site, A, B is in accordance with the following 100: (40-45), and uniformly mixing and stirring the components in proportion to perform crack pouring construction, wherein a small amount of the components can be manually stirred, when the mass of the components exceeds 1kg, a manual electric stirring drill is used for stirring, and the stirring time is controlled within 10 min.
Compared with asphalt and other thermosetting resins, the epoxy resin has higher bonding strength, the bisphenol A epoxy resin E-51 adopted by the invention has high epoxy value and high crosslinking density of a cured product, and the polysulfide rubber toughening agent with a flexible chain structure with lower glass transition temperature is introduced into the epoxy resin, so that the internal stress generated in the curing process can be better absorbed, the crack diffusion under the action of external force can be effectively slowed down, and the bonding strength is further improved. The phenolic aldehyde amine curing agent used in the formula is a modified amine product obtained by performing Mannich reaction on phenol, formaldehyde and polyamine, and has good adhesion with a humid surface and strong humidity and heat aging resistance, so that the phenolic aldehyde amine curing agent can still play a good adhesion role under a humid condition.
Compared with other similar products, the epoxy resin and the polysulfide rubber adopted by the invention have the remarkable characteristic of lower viscosity, the epoxy equivalent weight of the reactive diluent C12-14 alkyl glycidyl ether is 98-102 g/mol, the viscosity is 12mPa £ s, the epoxy value is high, the viscosity is low, the fluidity of the crack pouring material is greatly increased, meanwhile, the influence of a common diluent on the crosslinking density of a cured product is also reduced, and under the comprehensive action of various materials, the epoxy resin and the polysulfide rubber have sufficient operable time, the initial viscosity is far lower than that of other crack pouring materials, and the crack pouring performance is good.
According to the invention, each component molecular structure of A contains epoxy group, each component molecular structure of B contains active hydrogen (except defoaming agent, the dosage is small and can not be considered), and all components participate in curing reaction, but not in pure physical mixing process, so that organic volatilization is greatly reduced, and the defects of large volume shrinkage, low mechanical strength and the like caused by inactive substances are well solved. The low molecular weight polysulfide rubber and the long carbon chain reactive diluent can improve the bending strength and the impact strength after being used, so that the cured product has enough load resistance and deformation adaptability.
The modified aliphatic amine curing agent adopted by the invention is modified polyamine obtained by addition of polyamine and epoxy compound, the addition compound contains more hydroxyl groups, the molecular weight is increased, the reaction with epoxy resin is quicker, the curing reaction is further accelerated under the action of the tertiary amine curing accelerator, and the purpose of opening traffic within one hour after the completion of crack pouring repair is realized. In addition, the common asphalt crack pouring is carried out after heating, the operation is complex, harmful substances are generated, A, B can be mixed and used when the crack pouring machine is used, the crack pouring machine is convenient and easy to operate, and the crack pouring repairing efficiency is greatly improved.
The invention has the beneficial effects that: the crack pouring material has the advantages of high bonding strength, good fluidity, good toughness and high curing speed, can be used for pouring cracks at normal temperature, avoids heating in the crack pouring process of the asphalt pavement, is simple to operate and low in energy consumption, can effectively penetrate into the deep part of the cracks, realizes quick curing, completely bonds two walls of the cured cracks, is not easy to generate secondary damage, greatly improves the repairing efficiency and repairing effect of the asphalt pavement cracks, and is simple and safe in preparation method and convenient to operate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparation of A: 69 parts of bisphenol A type epoxy resin E-51 (Nantong star synthetic materials Co., Ltd.), 30 parts of C12-14 alkyl glycidyl ether (AGE, Changsha chemical research institute), 1 part of silane coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane (KH-560, Nanjing Chuang chemical auxiliaries Co., Ltd.) are weighed for later use, the materials are poured into a 20L iron barrel in sequence according to the weighing sequence, 2/3 with the total amount of the raw materials not exceeding the height of the iron barrel is filled, then the mixed materials are heated to 50-60 ℃, a manual stirring drill is used for clockwise stirring for 10-15 min until the components are uniformly mixed, and the components are packaged and stored in a sealing way after the stirring is finished.
B, preparation: weighing 45 parts of low-molecular-weight liquid polysulfide rubber JYL-121 (Wuhan Karsno science and technology Co., Ltd.), 24 parts of phenolic aldehyde amine 910 curing agent (Changsha chemical research institute), 23 parts of modified fatty amine A102 curing agent (Changsha chemical research institute), 7.8 parts of 2,4, 6-tris (dimethylaminomethyl) phenol (DMP-30, Changsha chemical research institute) and 0.2 part of silicon-fluorine ketone compound XYS-2333 (Yunshan chemical technology Co., Ltd.), pouring the raw materials into a 20L iron bucket in sequence according to the weighing sequence, filling the raw materials into the iron bucket, stirring the raw materials for 5min to 10min clockwise by using a torch stirring drill under the normal temperature condition that the total amount of the raw materials does not exceed the height of the iron bucket, and stirring the raw materials for 5min to 10min clockwise by 18 ℃ to 22 ℃ until the mixed slurry is in a uniform light yellow state, and subpackaging, sealing and storing the mixed slurry after the stirring is finished.
Uniformly mixing and stirring the prepared A, B according to a ratio of 100:40 to obtain the epoxy crack pouring material for repairing the asphalt pavement, wherein a small amount of the epoxy crack pouring material can be stirred manually, when the mass of the epoxy crack pouring material exceeds 1kg, a manual stirring drill is used for stirring, and the stirring time is controlled within 10 min.
Examples 2 to 6
The materials for rapidly repairing and filling the crack on the asphalt pavement of the embodiments 2 to 6 are produced according to the method described in the embodiment 1, and the proportions of the implemented materials are shown in the following table 1:
table 1 example 2-6 raw material ratios
In each example, the phenolic aldehyde amine 910 curing agent and the modified aliphatic amine a102 curing agent were purchased from changsha chemical research institute, the defoamer-fluorosilicone compound XYS-2333 was purchased from yunspeaker engineering technologies ltd, and the sources of the remaining raw materials are shown in table 2:
TABLE 2 sources of raw materials
Because the epoxy resin is mostly used for repairing cement concrete pavements and is still in a development stage when being used for repairing asphalt pavements, the specifications and test standards of the epoxy resin are yet to be established. Therefore, the invention fully refers to the corresponding specifications of the existing epoxy resin and the crack pouring material, and verifies the performance of the material from five aspects of the initial viscosity, the operable time, the curing time, the fracture elongation and the bonding strength of the crack pouring material by combining the actual use requirements.
The initial viscosity of the crack-filling material determines the seepage capability of the material in the crack, and the determination method is carried out according to GB/T2794-. Referring to JC/T1041-2007 epoxy resin grouting material for concrete cracks, the operable time of the epoxy resin grouting material is the time from the mixing start of A, B slurry to the time when the viscosity reaches 200 mPas. The finger dry time refers to the time for the material to harden to the extent that finger pressure does not deform, i.e., the curing time of the material. The elongation at break is an index for evaluating the deformation adaptability of the material, and the determination method is carried out according to GB/T2567-. The bonding strength determination method refers to JC/T1041-2007 epoxy resin grouting material for concrete cracks, and the test shows that the bonding base material is changed from cement concrete to asphalt concrete.
The material properties of each example are shown in Table 3, and the test temperature is 25 ℃ at room temperature.
TABLE 3 Properties of materials of examples
According to performance test results, the crack pouring material provided by the invention is low in initial viscosity and sufficient in operable time, can be cured within 1 hour after crack pouring operation is completed, has strong deformation adaptability of a cured product, and has good bonding performance with asphalt concrete as damage surfaces are all on the asphalt concrete when the damage state of a bonding test piece is observed, so that a better reinforcing effect can be achieved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (1)
1. The preparation method of the epoxy crack pouring material for repairing the asphalt pavement is characterized by comprising the following steps of:
step S1: preparation of A: weighing the raw materials A according to the formula, sequentially loading the raw materials A into a barrel, clockwise stirring the raw materials A and B for 10 to 15 minutes by using a torch stirring drill at the temperature of between 50 and 60 ℃ until the components are uniformly mixed, and subpackaging, sealing and storing the components after stirring;
step S2: b, preparation: weighing the raw materials B according to the formula, sequentially loading the raw materials B into a barrel, clockwise stirring the raw materials B for 5 to 10 minutes by using a manual stirring drill at the temperature of between 18 and 22 ℃ up and down until the mixed slurry is uniformly light yellow, and subpackaging, sealing and storing the slurry after stirring;
step S3: when used on site, A, B is in accordance with the following 100: (40-45), performing crack pouring construction, wherein a small amount of the mortar can be manually stirred, when the mortar is higher than 1kg in mass, a manual electric stirring drill is used for stirring, and the stirring time is controlled within 10 min;
A. the mass ratio of B is 100: 40-45;
the A comprises the following raw materials in percentage by mass:
69 to 73 percent of bisphenol A type epoxy resin
25 to 30 percent of epoxy compound active diluent
1 to 2 percent of silane coupling agent
The B comprises the following raw materials in percentage by mass:
the modified fatty amine curing agent is a modified fatty amine A102 curing agent;
the phenolic aldehyde amine curing agent is phenolic aldehyde amine 910 curing agent;
the epoxy compound reactive diluent is C12-14 alkyl glycidyl ether;
the silane coupling agent is gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane;
the polysulfide rubber toughening agent is low-molecular-weight liquid polysulfide rubber JYL-121;
the tertiary amine curing accelerator is 2,4, 6-tris (dimethylaminomethyl) phenol;
the defoaming agent is a silicon-fluorine ketone compound XYS-2333;
the bisphenol A type epoxy resin is E-51.
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| CN115651576A (en) * | 2022-09-23 | 2023-01-31 | 河南省交通规划设计研究院股份有限公司 | High-viscosity high-toughness waterproof binding material for coating bridge deck pavement and preparation method thereof |
| CN115820182A (en) * | 2022-12-09 | 2023-03-21 | 湖南肆玖科技有限公司 | Adhesive capable of being cured in low-temperature and humid environment and using method |
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| JPH09124900A (en) * | 1995-10-31 | 1997-05-13 | Cosmo Sogo Kenkyusho:Kk | Asphalt composition for pavement |
| CN102061063A (en) * | 2010-12-10 | 2011-05-18 | 湖北省京珠高速公路管理处 | Epoxy resin injecting paste material for maintenance of road engineering and preparation method thereof |
| CN103184025A (en) * | 2013-03-29 | 2013-07-03 | 交通运输部公路科学研究所 | Crack pouring adhesive for concrete cracks and application of crack pouring adhesive |
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| CN109503029A (en) * | 2018-12-06 | 2019-03-22 | 长沙理工大学 | Bituminous pavement assembled fast repair technique interlaminar bonding material and preparation method thereof |
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2019
- 2019-09-23 CN CN201910899708.8A patent/CN110564348B/en active Active
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| JPH09124900A (en) * | 1995-10-31 | 1997-05-13 | Cosmo Sogo Kenkyusho:Kk | Asphalt composition for pavement |
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| CN103184025A (en) * | 2013-03-29 | 2013-07-03 | 交通运输部公路科学研究所 | Crack pouring adhesive for concrete cracks and application of crack pouring adhesive |
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