Epoxy emulsified asphalt, mixture containing same, and preparation method and application of mixture

Abstract

The invention provides epoxy emulsified asphalt, a mixture containing the epoxy emulsified asphalt as well as a preparation method and application of the mixture. The epoxy emulsified asphalt is prepared from the following raw materials in percentage by mass based on the total mass of the raw materials: 3%-10% of an emulsifier, 10%-20% of epoxy resin, 60%-80% of asphalt and 5%-10% of water. The epoxy emulsified asphalt disclosed by the invention has high uniformity and high stability within a long time, the high-viscosity epoxy emulsified asphalt is obtained after mixing reaction, the mixture obtained by the epoxy emulsified asphalt is constructed by a cold mixing and cold paving process, the emission of heat and harmful gas in the construction process is reduced, and meanwhile, the mixture has excellent performance.

Description

Technical Field

[0001] The invention relates to epoxy emulsified asphalt, a mixture containing the same, and a preparation method and application of the mixture. Background Art

[0002] Asphalt pavement is a common pavement material, which is composed of asphalt concrete or asphalt gravel. It has good flatness, good driving comfort, low noise, strong anti-skid performance, long service life and easy maintenance. It is widely used in highways, urban roads and airport runways. The asphalt pavement paving process includes mixing, transportation, paving and rolling steps. It has strict requirements on the performance of paving materials and construction technology to ensure the quality of the pavement. Asphalt pavement can be designed with different structural layers according to needs to adapt to different traffic loads and environmental conditions. In the design of asphalt pavement, pavements with different structural levels are usually designed according to the expected traffic loads, environmental conditions and use requirements. For example, common structural layers include base layer, subbase layer and surface layer, and each layer has its specific functions and material requirements. Asphalt pavement not only has good economic performance, but also plays an important role in improving traffic efficiency and promoting regional economic development.

[0003] However, on the one hand, the uniformity and stability of modified asphalt prepared by the existing modified asphalt technology are difficult to guarantee and can only be stably stored for 3-5 days. Almost all modified asphalts are required to be used within a short period of time, otherwise the modifier and asphalt will be stratified and peeled off, affecting the use / performance of the final asphalt mixture.

[0004] On the other hand, when asphalt is laid on existing roads, the asphalt mixture is usually hot. When asphalt is laid at high temperatures, smoke will be generated. These smoke contain fine particles and harmful chemicals, which will pollute the environment. During the paving process, workers may develop respiratory diseases after inhaling the mixture. If workers accidentally come into direct contact with hot asphalt, it may cause severe skin burns. In addition, there is still room for improvement in the performance of existing mixtures in various aspects. Summary of the invention

[0005] The present invention aims to overcome the above-mentioned defects in the prior art and provide an epoxy emulsified asphalt, a mixture containing the same, and a preparation method and application of the mixture. The epoxy emulsified asphalt in the present invention has high uniformity and high stability for a long time (3-5 months), which is conducive to the subsequent mixing reaction with other mixtures, and high-viscosity epoxy emulsified asphalt is obtained after the mixing reaction; the mixture in the present invention is constructed by a cold mixing and cold laying process, and the mixture does not need to be heated during use, which reduces the heat and harmful gas emissions during the construction process, reduces environmental pollution and improves construction safety. At the same time, this mixture has excellent strength, stability, durability, fatigue resistance and peeling resistance, which is conducive to improving construction quality, and the mixture is convenient to construct and has strong adaptability, and is not affected by external climate and environment.

[0006] The present invention provides the following technical solutions to solve the above problems.

[0007] In the first aspect, the present invention provides an epoxy emulsified asphalt, which is prepared by the following raw materials. Based on the total mass of the raw materials, the raw materials include the following components in mass fractions: emulsifier: 3% to 10%, epoxy resin: 10% to 20%, asphalt: 60% to 80%, and water: 5% to 10%.

[0008] In the present invention, those skilled in the art should know that the asphalt is asphalt for modification.

[0009] In some embodiments, the emulsifier is preferably polyoxyethylene nonylphenol ether.

[0010] In some embodiments, the amount of the emulsifier is preferably 5wt% to 9wt%, for example 5wt%, 6wt%, 6.5wt%, 7wt%, 7.2wt%, 7.5wt%, 7.8wt%, 8wt%, 8.3wt% or 9wt%, preferably 6wt% to 9wt%.

[0011] In some embodiments, the amount of the emulsifier is preferably 30 wt% to 65 wt% of the epoxy resin, for example 30 wt%, 40 wt%, 50 wt%, 55 wt%, 60 wt% or 65 wt%.

[0012] In some embodiments, the epoxy resin is preferably E-51 or E-44, or a mixture thereof. When the epoxy resin is a mixture of E-51 and E-44, the mass ratio of the mixture E-51:E-44 is preferably 1:1, 2:1 or 3:1. Among them, the E-51 is an epoxy resin with an epoxy value between 0.48 and 0.54 eq / 100 g, and the E-44 is an epoxy resin with an epoxy value between 0.41 and 0.47 eq / 100 g.

[0013] In some embodiments, the amount of the epoxy resin is preferably 10wt% to 18wt%, for example 10wt%, 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt% or 18wt%, preferably 10wt% to 17wt%.

[0014] In some embodiments, the asphalt is preferably No. 90 or No. 110 road petroleum asphalt. Among them, No. 90 asphalt is asphalt with a needle penetration of 80-100 and a softening point of about 45°C, and No. 110 asphalt is asphalt with a needle penetration of 100-120 and a softening point of about 43°C. Needle penetration refers to the depth of a standard needle vertically penetrating an asphalt sample at 25°C and within 5s, expressed in 0.1mm. Softening point refers to the temperature at which an asphalt sample changes from hard to soft under the action of heat, expressed in °C.

[0015] In some embodiments, the amount of the asphalt is preferably 65wt% to 80wt%, for example 65wt%, 67wt%, 70wt%, 72wt%, 74wt%, 76wt% or 80wt%, preferably 65wt% to 77wt%.

[0016] In some embodiments, the amount of water is preferably 6wt% to 10wt%, for example 6.5wt%, 6.6wt%, 7wt%, 7.7wt%, 8wt%, 8.9wt%, 9wt% or 10wt%, preferably 6wt% to 9wt%.

[0017] In a second aspect, the present invention provides an epoxy emulsified asphalt mixture, wherein the epoxy emulsified asphalt mixture is prepared by the following component A and component B, wherein the component A comprises the following components in parts by weight: 100 parts of stone and 5 to 10 parts of epoxy emulsified asphalt;

[0018] The B component includes the following components in parts by weight: 40 to 65 parts of a curing agent, 10 to 20 parts of a filler, 2 to 8 parts of an accelerator and 10 to 30 parts of diesel;

[0019] The epoxy emulsified asphalt is the epoxy emulsified asphalt described above.

[0020] In the present invention, the epoxy emulsified asphalt in component A is mixed with component B to obtain an epoxy emulsified asphalt with high viscosity, and its high viscosity mainly comes from the reaction between epoxy and curing agent, especially a specific amount of epoxy and curing agent, to form a network and thus reinforce the inside.

[0021] In some embodiments, the epoxy emulsified asphalt is preferably 6 to 10 parts, such as 6 parts, 7 parts, 8 parts, 9 parts or 10 parts, preferably 7 to 9 parts.

[0022] In some embodiments, the curing agent is preferably selected from m-phenylenediamine (molecular formula C6H4(NH2)2), phenylenediamine (molecular formula C6H8N2), diaminodiphenyl sulfone (molecular formula C 12 H 12 N2O2S) and dimethylformamide (molecular formula is C3H7NO).

[0023] In some embodiments, the curing agent is preferably 40 to 60 parts, such as 40 parts, 45 parts, 48 ​​parts, 50 parts, 52 parts, 55 parts, 60 parts, preferably 45 to 55 parts.

[0024] In some embodiments, the filler is preferably diatomaceous earth. Optionally, the particle size of the filler is distributed between 0.075 mm and 2.36 mm, such as 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 1 mm or 2 mm, preferably between 0.1 mm and 0.4 mm. The particle size is selected within the above range to help optimize the dispersibility and fluidity of the filler, ensure that the filler is evenly distributed during the mixing process, and improve the performance of the final product.

[0025] In some embodiments, the filler is preferably 12 to 20 parts, such as 12 parts, 14 parts, 15 parts, 16 parts, 18 parts or 20 parts, preferably 12 to 18 parts.

[0026] In some embodiments, the promoter is preferably resorcinol diglycidyl ether (DMP-30), whose molecular formula is C 11 H 17 NO is a colorless to pale yellow transparent liquid.

[0027] In some embodiments, the accelerator is preferably 2 to 7 parts, such as 2 parts, 3 parts, 4 parts, 5 parts, 6 parts or 7 parts, preferably 2 to 4 parts.

[0028] In some embodiments, the diesel is preferably No. 0 diesel.

[0029] In some embodiments, the diesel is preferably 10 to 25 parts, such as 10 parts, 11 parts, 12 parts, 13 parts, 15 parts, 20 parts or 25 parts, preferably 10-15 parts.

[0030] In some embodiments, the mass ratio of component A to component B is preferably 1:(0.3-0.5), for example, 1:0.3, 1:0.4, 1:0.45 or 1:0.5.

[0031] In a third aspect, the present invention provides a method for preparing the epoxy emulsified asphalt mixture as described above, comprising the following steps:

[0032] Step a:

[0033] All components in the A component are fully stirred to obtain a uniform mixture; wherein the preparation of the epoxy emulsified asphalt comprises the following steps:

[0034] The water and the emulsifier are fully mixed until the emulsifier is dissolved to form an emulsified system, and then stirred and mixed with the epoxy resin until the epoxy resin and the water phase are completely mixed to form an emulsified epoxy resin system; the asphalt is heated and stirred and mixed with the emulsified epoxy resin system until the asphalt is completely emulsified to form the epoxy emulsified asphalt;

[0035] Step b:

[0036] Stir all the components in the B component thoroughly to obtain a uniform mixture;

[0037] Step c:

[0038] The mixture obtained in step a is mixed with the mixture obtained in step b to obtain an epoxy emulsified asphalt mixture.

[0039] In the present invention, a and b in step a and step b do not limit the order in which the steps are performed. Step a may be performed first and then step b, or step b may be performed first and then step a.

[0040] In some embodiments, in step a, the heating temperature of the asphalt is preferably 130-180° C., for example 135° C. This temperature range helps the fluidity of the asphalt, making it easier to mix evenly with the emulsified epoxy resin system, and is also beneficial to the activity of certain components in the asphalt, thereby improving the performance of the final product.

[0041] In some embodiments, in step a, a rate control agent is preferably further added to prevent the epoxy resin from agglomerating rapidly in water.

[0042] In some embodiments, in step a, the stone is preferably preheated to remove moisture and impurities in the stone. The heating temperature is preferably 160-200°C, such as 175°C, 180°C, 185°C or 190°C.

[0043] In some embodiments, in step b, the stirring time is preferably 15 to 120 minutes.

[0044] In the present invention, unless the temperature is particularly specified, the reaction is carried out at room temperature.

[0045] In a fourth aspect, the present invention provides a use of the epoxy emulsified asphalt mixture as described above in an asphalt pavement.

[0046] In some embodiments, the component A and the component B are preferably applied to the asphalt pavement in a mass ratio of 1:(0.3-0.5), such as 1:0.3, 1:0.4, 1:0.45 or 1:0.5.

[0047] In some embodiments, component A and component B may be fully mixed at the construction site, and the mixed material may be directly applied to the asphalt pavement and then optionally compacted and leveled.

[0048] In some embodiments, component A may be applied first, and then component B. At this time, component B evenly penetrates into component A, further enhancing the performance of component A. Preferably, component B is applied 5 to 10 minutes after component A is applied.

[0049] In the present invention, the epoxy emulsified asphalt mixture is constructed by cold mixing and cold laying, which reduces the heat and harmful gas emissions during the construction process, reduces environmental pollution and improves construction safety.

[0050] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0051] The reagents and raw materials used in the present invention are commercially available.

[0052] The positive and progressive effects of the present invention are:

[0053] 1. Through specific proportions and preparation processes, the epoxy emulsified asphalt in the present invention has high uniformity and high stability over a long period of time (3-5 months), which is beneficial to the subsequent mixing reaction with the mixed materials, and high-viscosity epoxy emulsified asphalt is obtained after the mixing reaction.

[0054] 2. In the present invention, firstly, the application of the mixture adopts the cold-mix and cold-paving construction process, which reduces the heat and harmful gas emissions during the construction process, reduces environmental pollution, and improves construction safety; secondly, by adopting a high-viscosity epoxy emulsified asphalt mixture, the adhesion between asphalt and stone is significantly improved, and the road surface's resistance to cracking, rutting and water damage is enhanced, thereby extending the service life of the road surface; furthermore, the epoxy emulsified asphalt in the present invention, combined with other raw materials such as curing agents, fillers, diesel and accelerators to obtain a mixture, has improved comprehensive performance, including better strength, durability, fatigue resistance and anti-stripping properties.

[0055] 3. When the mixture of the present invention is used, on the one hand, it is convenient to construct. The mixture can be quickly prepared and laid at the construction site, which greatly shortens the construction period, reduces the traffic interruption time caused by construction, improves construction efficiency, and improves social and economic benefits; on the other hand, it has excellent adaptability. The mixture of the present invention can be constructed in a variety of climates and environments without being restricted by temperature, especially under low temperature conditions, it can still maintain good construction performance, which makes it have a wide range of application prospects in areas with large changes in seasons. These characteristics make the cold-mixed, cold-laid, high-viscosity epoxy emulsified asphalt mixture of the present invention have high practical value and market potential in road maintenance and new construction projects. DETAILED DESCRIPTION

[0056] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. The experimental methods in the following examples without specifying specific conditions are carried out according to conventional methods and conditions, or selected according to the product specifications.

[0057] The parts mentioned in the following examples are parts by weight.

[0058] Example 1

[0059] Preparation and construction process of a cold-mixed, cold-laid, high-viscosity epoxy emulsified asphalt mixture:

[0060] Step a: Take 100 parts of stone and preheat to 180°C to remove moisture and impurities. Take 65 parts of No. 90 road petroleum asphalt and heat at 150°C. Next, take 6.5 parts of polyoxyethylene nonylphenol ether emulsifier, 12 parts of epoxy resin mixed by E-51 and E-44 in a 1:1 mass ratio, 65 parts of heated No. 90 road petroleum asphalt, and 7 parts of water, mix these components and stir them thoroughly to prepare a uniform and stable epoxy emulsified asphalt. Then, add 7 parts of epoxy emulsified asphalt to the preheated stone, and continue stirring until all components are completely mixed to obtain component A.

[0061] Step b: Take 50 parts of m-phenylenediamine, 15 parts of diatomaceous earth with a particle size of 0.15 mm, 3 parts of DMP-30 accelerator and 10 parts of diesel, mix and stir them with a stirrer at room temperature for 30 minutes to ensure that all components are fully mixed to obtain component B.

[0062] Step c: Mix component A and component B at a mass ratio of 1:0.4 on site, then spread directly on the construction surface, compact and level it using construction machinery. Alternatively, spread component A alone first, wait for 5 to 10 minutes, and then spread component B to allow it to evenly penetrate into component A to improve the performance of component A.

[0063] Example 2

[0064] Preparation and construction process of a cold-mixed, cold-laid, high-viscosity epoxy emulsified asphalt mixture:

[0065] Step a: First, take 100 parts of stone and heat it to 190°C to remove moisture and impurities. Take 60 parts of No. 90 road petroleum asphalt and heat it at 130°C. Next, take 7 parts of polyoxyethylene nonylphenol ether emulsifier, 15 parts of pure E-51 epoxy resin, 60 parts of heated No. 90 road petroleum asphalt and 8 parts of water, mix and stir these components to prepare uniform and stable epoxy emulsified asphalt. Then, add 7 parts of epoxy emulsified asphalt to the preheated stone, and continue stirring until all components are completely mixed to obtain component A.

[0066] Step b: Take 45 parts of phenylenediamine, 12 parts of diatomaceous earth with a particle size of 0.2 mm, 2 parts of DMP-30 accelerator and 15 parts of diesel, mix and stir at room temperature for 45 minutes to ensure uniform mixing, and obtain component B.

[0067] Step c: During construction, mix component A and component B in a mass ratio of 1:0.5, then spread and compact. Alternatively, spread component A alone first, and then spread component B 5 to 10 minutes later to enhance the performance of component A.

[0068] Example 3

[0069] Preparation and construction process of a cold-mixed, cold-laid, high-viscosity epoxy emulsified asphalt mixture:

[0070] Step a: First, take 100 parts of stone and heat it to 175°C to remove moisture and impurities. Take 70 parts of No. 90 road petroleum asphalt and heat it at 135°C. Next, take 6 parts of polyoxyethylene nonylphenol ether emulsifier, 10 parts of pure E-44 epoxy resin, 70 parts of heated No. 90 road petroleum asphalt and 6 parts of water, mix these components and stir them thoroughly to prepare uniform and stable epoxy emulsified asphalt. Then, add 7 parts of epoxy emulsified asphalt to the preheated stone and continue stirring until the mixture is uniform to obtain component A.

[0071] Step b: Take 55 parts of phenylenediamine, 18 parts of diatomaceous earth with a particle size of 0.25 mm, 4 parts of DMP-30 accelerator and 12 parts of diesel, mix and stir at room temperature for 60 minutes to ensure uniform mixing, and obtain component B.

[0072] Step c: During construction, mix component A and component B in a mass ratio of 1:0.3, then spread and compact. Alternatively, spread component A alone first, and then spread component B 5 to 10 minutes later to improve the performance of component A.

[0073] Example 4

[0074] Preparation and construction process of a cold-mixed, cold-laid, high-viscosity epoxy emulsified asphalt mixture:

[0075] Step a: First, take 100 parts of stone and heat it to 185°C to remove moisture and impurities. Take 63 parts of No. 90 road petroleum asphalt and heat it at 135°C. Next, take 7.5 parts of polyoxyethylene nonylphenol ether emulsifier, 13 parts of epoxy resin mixed by E-51 and E-44 in a mass ratio of 3:1, 63 parts of heated No. 90 road petroleum asphalt and 7 parts of water, mix and stir these components to prepare a uniform and stable epoxy emulsified asphalt. Then, add 8 parts of epoxy emulsified asphalt to the preheated stone and stir evenly to obtain component A.

[0076] Step b: Take 48 parts of phenylenediamine, 14 parts of diatomaceous earth with a particle size of 0.3 mm, 3 parts of DMP-30 accelerator and 11 parts of diesel, mix and stir at room temperature for 50 minutes to ensure uniform mixing, and obtain component B.

[0077] Step c: During construction, mix component A and component B in a mass ratio of 1:0.4, then spread and compact. Alternatively, spread component A first, and then spread component B 5 to 10 minutes later to improve the performance of component A.

[0078] Example 5

[0079] Preparation and construction process of a cold-mixed, cold-laid, high-viscosity epoxy emulsified asphalt mixture:

[0080] Step a: First, take 100 parts of stone and heat it to 200°C to remove moisture and impurities. Take 67 parts of No. 110 road petroleum asphalt and heat it at 135°C. Next, take 6.8 parts of polyoxyethylene nonylphenol ether emulsifier, 11 parts of epoxy resin mixed by E-51 epoxy resin and E-44 epoxy resin in a 1:1 mass ratio, 67 parts of heated No. 110 road petroleum asphalt and 6 parts of water, mix these components in a specific emulsification device, and keep the stirring speed at 1000 rpm to prepare a uniform and stable epoxy emulsified asphalt. Subsequently, add 9 parts of epoxy emulsified asphalt to the preheated stone, and continue stirring until all stone particles are evenly coated with asphalt to obtain component A.

[0081] Step b: Take 52 parts of m-phenylenediamine, 16 parts of diatomaceous earth with a particle size of 0.35 mm, 2 parts of DMP-30 accelerator and 13 parts of No. 0 diesel. Use a high-speed mixer to mix the above components at room temperature for 40 minutes to ensure that the components are fully mixed.

[0082] Step c: At the construction site, mix component A and component B in a mass ratio of 1:0.45, and use professional paving equipment to evenly spread the mixture on the treated road surface. After paving, use a roller to compact it immediately to remove air bubbles and increase the density of the road surface. Alternatively, you can first spread component A alone, wait for it to cool slightly and initially solidify, and then evenly spread component B to allow component B to fully penetrate into component A, further strengthening the performance of component A and the overall structure of the road surface.

[0083] Effect Example

[0084] Marshall strength test

[0085] The mixtures in the above-mentioned Examples 1-5 were taken, and the gradation of the mixture aggregates was selected as the median gradation of AC-13. According to the standard Marshall strength test in JTG E20-2011 in the standard process for asphalt mixture design in my country, the Marshall strength of the mixtures in Examples 1-5 was tested. Four samples were taken for testing in each example, and the average of the four measured values ​​was taken. The test results are shown in Table 1.

[0086] Table 1 Marshall test results

[0087]

[0088] The epoxy emulsified asphalt prepared in Examples 1-5 of the present invention has high uniformity and high stability over a long period of time (3-5 months). The mixture of the epoxy emulsified asphalt is constructed by a cold mix and cold paving process, and the mixture does not need to be heated during use, which reduces the heat and harmful gas emissions during the construction process, reduces environmental pollution and improves construction safety.

[0089] At the same time, it can be seen from the above Marshall strength test data that the strength of the epoxy emulsified asphalt mixture of the present invention meets the requirements of the national standard JTGF40-2004. Among them, Example 4 has the best performance, because of its specific composition and the use of No. 90 asphalt, the Marshall strength is the highest.

Claims

1. An epoxy emulsified asphalt, characterized in that: The epoxy emulsified asphalt is prepared from the following raw materials, which include the following components in mass fractions based on the total mass of the raw materials: emulsifier: 3% to 10%, epoxy resin: 10% to 20%, asphalt: 60% to 80%, and water: 5% to 10%.

2. The epoxy emulsified asphalt according to claim 1, characterized in that It meets one or more of the following conditions: (1) The emulsifier is polyoxyethylene nonylphenol ether; (2) The epoxy resin is E-51 or E-44, or a mixture thereof; (3) The epoxy resin is a mixture of E-51 and E-44, and the mass ratio of the mixture E-51:E-44 is preferably 1:1, 2:1 or 3:1; (4) The asphalt is No. 90 or No. 110 road petroleum asphalt.

3. The epoxy emulsified asphalt according to claim 1, characterized in that It meets one or more of the following conditions: (1) The amount of the emulsifier is 5wt% to 9wt%, for example, 5wt%, 6wt%, 6.5wt%, 7wt%, 7.2wt%, 7.5wt%, 7.8wt%, 8wt%, 8.3wt% or 9wt%, preferably 6wt% to 9wt%; (2) The amount of the emulsifier is 30 wt% to 65 wt% of the epoxy resin, for example, 30 wt%, 40 wt%, 50 wt%, 55 wt%, 60 wt% or 65 wt%; (3) The epoxy resin is used in an amount of 10 wt% to 18 wt%, such as 10 wt%, 11 wt%, 12 wt%, 13 wt%, 14 wt%, 15 wt%, 16 wt%, 17 wt% or 18 wt%, preferably 10 wt% to 17 wt%; (4) The amount of the asphalt is 65wt% to 80wt%, such as 65wt%, 67wt%, 70wt%, 72wt%, 74wt%, 76wt% or 80wt%, preferably 65wt% to 77wt%; (5) The amount of water is 6 wt% to 10 wt%, for example, 6.5 wt%, 6.6 wt%, 7 wt%, 7.7 wt%, 8 wt%, 8.9 wt%, 9 wt% or 10 wt%, preferably 6 wt% to 9 wt%.

4. An epoxy emulsified asphalt mixture, characterized in that: The epoxy emulsified asphalt mixture is prepared by the following component A and component B, wherein the component A comprises the following components in parts by weight: 100 parts of stone and 5 to 10 parts of epoxy emulsified asphalt; The B component includes the following components in parts by weight: 40 to 65 parts of a curing agent, 10 to 20 parts of a filler, 2 to 8 parts of an accelerator and 10 to 30 parts of diesel; The epoxy emulsified asphalt is the epoxy emulsified asphalt according to any one of claims 1 to 3.

5. The epoxy emulsified asphalt mixture according to claim 4, characterized in that: It meets one or more of the following conditions: (1) The curing agent is selected from m-phenylenediamine, phenylenediamine, diaminodiphenyl sulfone and dimethylformamide; (2) The filler is diatomaceous earth; (3) The accelerator is resorcinol diglycidyl ether; (4) The diesel is No. 0 diesel.

6. The epoxy emulsified asphalt mixture according to claim 4, characterized in that: It meets one or more of the following conditions: (1) The epoxy emulsified asphalt is 6 to 10 parts, for example 6, 7, 8, 9 or 10 parts, preferably 7 to 9 parts; (2) the curing agent is 40 to 60 parts, for example 40 parts, 45 parts, 48 ​​parts, 50 parts, 52 parts, 55 parts, 60 parts, preferably 45 to 55 parts; (3) The particle size distribution of the filler is between 0.075 mm and 2.36 mm, such as 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 1 mm or 2 mm, preferably between 0.1 mm and 0.4 mm; (4) The filler is 12 to 20 parts, for example 12 parts, 14 parts, 15 parts, 16 parts, 18 parts or 20 parts, preferably 12 to 18 parts; (5) The accelerator is 2 to 7 parts, for example, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts or 7 parts, preferably 2 to 4 parts; (6) The diesel oil is 10 to 25 parts, such as 10 parts, 11 parts, 12 parts, 13 parts, 15 parts, 20 parts or 25 parts, preferably 10-15 parts; (7) The mass ratio of component A to component B is 1:(0.3-0.5), for example, 1:0.3, 1:0.4, 1:0.45 or 1:0.

5.

7. A method for preparing an epoxy emulsified asphalt mixture as claimed in any one of claims 4 to 6, characterized in that: The steps include: Step a: All components in the A component are fully stirred to obtain a uniform mixture; wherein the preparation of the epoxy emulsified asphalt comprises the following steps: The water and the emulsifier are fully mixed until the emulsifier is dissolved to form an emulsified system, and then stirred and mixed with the epoxy resin until the epoxy resin and the water phase are completely mixed to form an emulsified epoxy resin system; the asphalt is heated and stirred and mixed with the emulsified epoxy resin system until the asphalt is completely emulsified to form the epoxy emulsified asphalt; Step b: Stir all the components in the B component thoroughly to obtain a uniform mixture; Step c: The mixture obtained in step a is mixed with the mixture obtained in step b to obtain an epoxy emulsified asphalt mixture.

8. The method for preparing epoxy emulsified asphalt mixture according to claim 7, characterized in that: It meets one or more of the following conditions: (1) In step a, the heating temperature of the asphalt is 130-180° C., for example, 135° C.; (2) In step a, a rate control agent is further added; (3) In step a, the stone is preheated, and the heating temperature is preferably 160-200° C., such as 175° C., 180° C., 185° C. or 190° C.; (4) In step b, the stirring time is 15 to 120 minutes.

9. Use of the epoxy emulsified asphalt mixture as claimed in any one of claims 4 to 6 in asphalt pavement.

10. The use according to claim 9, characterized in that: It meets one or more of the following conditions: (1) The component A and the component B are applied to the asphalt pavement in a mass ratio of 1: (0.3-0.5), for example, 1: 0.3, 1: 0.4, 1: 0.45 or 1: 0.5; (2) Component A and Component B are fully mixed at the construction site, and the mixed material is directly applied to the asphalt pavement, and then compacted and leveled optionally; (3) Component A is applied first, and then component B is applied. Preferably, component B is applied 5 to 10 minutes after component A is applied; (4) The epoxy emulsified asphalt mixture is constructed using a cold mix and cold paving process.

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