Preparation process of cold-mixed and cold-spread water-based acrylic acid hybrid epoxy environment-friendly asphalt material

Abstract

The invention relates to the technical field of asphalt material preparation, in particular to a cold-mixing and cold-spreading waterborne acrylic hybrid epoxy environment-friendly asphalt material preparation process which comprises the following steps: physically mixing waterborne acrylic emulsion and waterborne epoxy emulsion to obtain waterborne acrylic hybrid epoxy emulsion; adding the asphalt pavement milling material and an activating agent into vibration stirring equipment, and stirring to obtain an activated milling material; after the activated milling material is obtained, continuously adding the water-based acrylic hybrid epoxy emulsion, the curing agent and the cold-mixed asphalt modifier into the vibration stirring equipment, and stirring and coating at normal temperature; pure water is added into the vibration stirring equipment, and the torque of the vibration stirring equipment and the temperature of the asphalt mixture are collected within a preset time period after the pure water is added; determining a local coating non-uniform evaluation value and a viscosity evaluation coefficient of the asphalt mixture; the curing reaction in the vibration stirring equipment is regulated and controlled, and the prepared asphalt material is obtained. The mechanical property of the prepared asphalt material is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of asphalt material preparation, in particular to a cold-mixing and cold-paving water-based acrylic acid hybrid epoxy environment-friendly asphalt material preparation process. BACKGROUND

[0002] After long-term use of asphalt pavement, diseases such as pits, loose and peeling will occur, and timely repair is needed. There are two types of pavement repair, namely hot repair method and cold repair method. The hot repair method mainly uses hot-mixed asphalt mixture, which needs to be heated at high temperature in the production and construction process, emits a large amount of smoke and harmful gas, and the remaining materials are wasted, and the construction cannot be carried out in low temperature and rainy weather. The cold-mixing and cold-paving technology usually takes emulsified asphalt as the core, and applies the reclaimed asphalt pavement material (RAP) to the base or surface layer of the highway, which can be constructed at room temperature, simplifies the construction procedure, is easy to operate, and saves energy and resources.

[0003] As a high-performance water-based environment-friendly material that takes into account the weather resistance of acrylic acid and the mechanical strength of epoxy resin, the water-based acrylic acid hybrid epoxy environment-friendly asphalt material needs to introduce a water-reactive cold repair agent into the emulsified asphalt vibration and stirring regeneration vehicle during the production and construction process, and the water reacts to promote the curing of the cold-mixing and cold-paving asphalt material, so as to improve the initial strength and durability. However, the porosity and aging degree of the asphalt pavement milling material (RAP) are different, and the single water addition mode of the emulsified asphalt vibration and stirring regeneration vehicle cannot adapt to the water content fluctuation of the asphalt pavement milling material and the change of environmental temperature and humidity, which directly affects the curing process and effect of the asphalt mixture, and finally reduces the product performance of the prepared asphalt material. SUMMARY

[0004] In order to solve the above technical problems, the application provides a cold-mixing and cold-paving water-based acrylic acid hybrid epoxy environment-friendly asphalt material preparation process to solve the existing problems.

[0005] The cold-mixing and cold-paving water-based acrylic acid hybrid epoxy environment-friendly asphalt material preparation process provided by the application adopts the following technical scheme: One embodiment of the application provides a cold-mixing and cold-paving water-based acrylic acid hybrid epoxy environment-friendly asphalt material preparation process, which comprises the following steps: First, physically mix the water-based acrylic acid emulsion and the water-based epoxy emulsion to obtain a water-based acrylic acid hybrid epoxy emulsion; Second, add the asphalt pavement milling material and the activator to the vibration and stirring equipment, stir to obtain the activated milling material, and then continue to add the water-based acrylic acid hybrid epoxy emulsion, the curing agent and the cold-mixing asphalt modifier to the vibration and stirring equipment, and stir at room temperature to coat; Finally, add pure water to the vibration and stirring equipment, and collect the torque of the vibration and stirring equipment at each time and the temperature of the stirred asphalt mixture at each time within a preset time period after the pure water is added. The temperature mutation degree and the proportion of the time when the temperature mutation occurs at each time are analyzed to determine the temperature sudden rising strength of the asphalt mixture, and the linear change trend of the temperature of the asphalt mixture is combined to obtain an evaluation value of local uneven coating of the asphalt mixture; The viscosity evaluation coefficient of the asphalt mixture is determined by the difference between the trend characteristics of the torque at each time and the trend characteristics of the torque of the standard asphalt material during preparation. The solidification reaction in the vibration mixing device is regulated by using the local uneven coating evaluation value and the viscosity evaluation coefficient to obtain the prepared asphalt material.

[0006] In one embodiment, the mass ratio of the aqueous epoxy emulsion to the aqueous acrylic emulsion during physical mixing is 3:1 to 5:1.

[0007] In one embodiment, the mass ratio of the asphalt pavement milling material to the activator is 100:7 to 15:1, and the particle size of the asphalt pavement milling material is ≤8 mm.

[0008] In one embodiment, the stirring time after obtaining the activated milling material is 2 to 5 minutes.

[0009] In one embodiment, the mass ratio of the aqueous acrylic hybrid epoxy emulsion to the curing agent is 2:1, the mass ratio of the aqueous acrylic hybrid epoxy emulsion to the asphalt pavement milling material is 20:1, and the mass ratio of the cold-mixed asphalt modifier to the asphalt pavement milling material is 100:1.5 to 100:2.5.

[0010] In one embodiment, the stirring time at room temperature is 2 to 5 minutes, and the curing agent is a polyamide curing agent.

[0011] In one embodiment, the determination of the temperature sudden rising strength comprises: Smooth all collected temperatures at each time, calculate the difference between the temperature before smoothing and the temperature after smoothing at each time, and take the time when the difference is greater than a preset temperature threshold as the sudden rising time; Calculate the cumulative sum of the difference between the difference and the temperature threshold at all sudden rising times, and the temperature sudden rising strength is positively correlated with the cumulative sum and the proportion of the sudden rising time in all times.

[0012] In one embodiment, the determination of the local uneven coating evaluation value comprises: Linearly fit the smoothed temperature at all times, calculate the mean of the fitting error at all times, and the local uneven coating evaluation value is the fusion result of the mean and the temperature sudden rising strength.

[0013] In one embodiment, the determination of the viscosity evaluation coefficient comprises: The trend item of the torque at each time is obtained by using a time decomposition algorithm, and the slope of the trend item at all times is obtained, denoted as a first slope, and correspondingly, the trend item of the torque corresponding to the standard asphalt material during preparation is obtained, and a second slope is obtained, and the ratio of the first slope to the second slope is taken as the viscosity evaluation coefficient.

[0014] In one embodiment, the regulation of the solidification reaction in the vibrating mixing device comprises: The local uneven coating evaluation value and the viscosity evaluation coefficient of the asphalt mixture are evaluated as a whole by using a machine learning algorithm, and the evaluation result includes three types of over-solidification, under-solidification and appropriate solidification. When the evaluation result is over-solidification, 0.1-0.3% of the total mass of the asphalt mixture is added to the vibrating mixing device as a water reducing agent; When the evaluation result is under-solidification, 10-20% of the amount of pure water that has been added is added to the vibrating mixing device as pure water; When the evaluation result is appropriate solidification, no additional treatment is performed on the solidification reaction in the vibrating mixing device.

[0015] The present application has at least the following beneficial effects: The present application monitors the torque of the vibrating mixing device at each time and the temperature of the mixed asphalt mixture at each time, reflects the mixing resistance and temperature change characteristics of the asphalt mixture, determines the local uneven coating evaluation value and the viscosity evaluation coefficient of the asphalt mixture, evaluates the local uneven coating uniformity and viscosity change of the asphalt mixture, realizes the evaluation and targeted control of the solidification reaction process of the asphalt mixture, regulates the solidification reaction in the vibrating mixing device by using the local uneven coating evaluation value and the viscosity evaluation coefficient, overcomes the problem that the traditional single water addition mode is difficult to adapt to the water content fluctuation of the asphalt pavement milling material and the environmental temperature and humidity variation, ensures the stability of the solidification process of the asphalt mixture, improves the control accuracy of the solidification reaction of the asphalt mixture, and further improves the compactness and strength of the final prepared asphalt material product, and significantly enhances the mechanical properties of the asphalt material product. The present application prepares a water-based acrylic hybrid epoxy emulsion, introduces a water-reactive cold patching agent, and the like, so that the water-based acrylic hybrid epoxy environmentally friendly asphalt material has the weather resistance of acrylic and the mechanical strength of epoxy resin, effectively reduces the void ratio, improves the compactness, and has stronger tensile strength and splitting strength, prolongs the service life of the asphalt road, and reduces the subsequent maintenance cost. The cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally-friendly asphalt material prepared by the application avoids the problem of emission of a large amount of smoke and harmful gas due to high-temperature heating in the production and construction process of the hot repair method, reduces environmental pollution, and can utilize waste asphalt pavement materials (RAP) for recycling application in the base or surface layer of the highway, thereby realizing recycling of resources. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the application or the prior art, a brief introduction will be given to the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 A step flow chart of a preparation process of a cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally-friendly asphalt material provided by the application is provided. Figure 2 A curing reaction control flow chart of the asphalt mixture. DETAILED DESCRIPTION

[0018] In order to further illustrate the technical means and effects adopted by the application to achieve the predetermined purposes, the following describes, in combination with the drawings and preferred embodiments, the specific embodiments, structure, features and effects of a preparation process of a cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally-friendly asphalt material according to the application. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs.

[0020] The following specifically describes a specific scheme of a preparation process of a cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally-friendly asphalt material provided by the application in combination with the drawings.

[0021] Embodiment 1 Please refer to Figure 1 which shows a step flow chart of a preparation process of a cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally-friendly asphalt material provided by Embodiment 1 of the application. The process includes: Step S001, physically mixing the water-based acrylic emulsion and the water-based epoxy emulsion to obtain a water-based acrylic hybrid epoxy emulsion.

[0022] First, the water-based acrylic emulsion is prepared, specifically: The raw material ratio includes: 100 parts of deionized water, 2 parts of emulsifier, 2 parts of pH buffer, 15 parts of styrene, 50 parts of acrylate, 10 parts of methacrylic acid, 10 parts of emulsion stabilizer, and 1 part of initiator.

[0023] In this embodiment, the initiator is potassium persulfate; the acrylate is a mixture of methyl methacrylate and butyl acrylate; the emulsion stabilizer is allyl glycidyl ether, which has the characteristics of a self-emulsifier due to its hydrophilic-lipophilic property, further improving the stability of the emulsion. The emulsifier includes fatty alcohol polyoxyethylene ether (AEO), alkylphenol polyoxyethylene ether, and sodium alkyl diphenyl ether disulfonate.

[0024] The preparation method of the water-based acrylic emulsion specifically includes: taking 1 / 3 of 100 parts of deionized water and mixing methyl methacrylate, styrene, and acrylate to obtain a mixed monomer; taking the remaining deionized water and mixing the emulsifier and the pH buffer to obtain an emulsifier solution; taking 75% of the obtained emulsifier solution and mixing the mixed monomer at 30°C, and adding the emulsion stabilizer to obtain a mixed monomer emulsion; heating the mixed monomer solution to 70°C, adding the initiator and the remaining emulsifier solution, and preparing the water-based acrylic emulsion.

[0025] Secondly, a latent curing thermoplastic epoxy resin mixture is prepared, specifically: The raw material ratio includes: 40 parts of bisphenol A type epoxy resin, 20 parts of bisphenol A, 20 parts of toughening agent, and a catalyst in an amount of 3% of the total amount of bisphenol A type epoxy resin.

[0026] Among them, the bisphenol A type epoxy resin is specifically E-55, E-51, and E-44 epoxy resin, and the catalyst is triphenylphosphine. The toughening agent is neopentyl glycol diglycidyl ether and 1,4-butanediol diglycidyl ether, which functions to reduce the brittleness of the resin, increase the toughness, improve the load bearing strength, be miscible with the resin, contain active groups that can participate in the curing reaction of the resin, and improve the elongation at break and impact strength.

[0027] The preparation method of the latent curing thermoplastic epoxy resin mixture includes: first, uniformly mixing the measured bisphenol A type epoxy resin and toughening agent in a reaction container, heating to 75°C, adding bisphenol A at 90°C and maintaining stirring for 1 hour, after the bisphenol A is completely dissolved, adding the catalyst, and stirring and dissolving for about 1 hour to obtain the latent curing thermoplastic epoxy resin mixture.

[0028] Further, an aqueous epoxy emulsion is prepared, specifically: The raw material ratio includes: 40 parts of latent curing thermoplastic epoxy resin mixture, 3 parts of emulsifier, 4 parts of cosolvent, 40 parts of deionized water, and 1 part of defoaming agent.

[0029] The co-solvent is ethylene glycol methyl ether or ethylene glycol ethyl ether, and the defoaming agent is a polyether siloxane copolymer.

[0030] The preparation method of the aqueous epoxy emulsion is as follows: the latent curing thermoplastic epoxy resin mixture, the emulsifier, the co-solvent and the defoaming agent are put into a reaction container and heated to be uniformly dissolved, a high-speed dispersion machine is used for dispersion, the heating temperature is 70 DEG C, 1 / 3 of 40 parts of deionized water is added, the dispersion is continuously carried out, after the viscosity rises, the remaining deionized water is added dropwise, the dropping is completed in 1 hour, and then the temperature is cooled to room temperature, to obtain the aqueous epoxy emulsion.

[0031] Finally, the aqueous epoxy emulsion and the aqueous acrylic emulsion are physically mixed in a mass ratio of 3:1 to obtain the aqueous acrylic hybrid epoxy emulsion.

[0032] In step S002, the asphalt pavement milling material and the activator are added to the vibrating stirring equipment, and the activated milling material is obtained after stirring.

[0033] Firstly, 50 parts of alcohol are put into a reaction container as a solvent, heated to 50 DEG C, 50 parts of stearic acid waste are added into the alcohol, and stirring is started with a speed of 300 rpm / min, and then 40 parts of anthracene oil are added into the alcohol, and the stirring speed is maintained; the emulsifier is added, the temperature is raised to 70 DEG C, the stirring speed is 1000 rpm / min, and after stirring for 30 min, the activator is obtained.

[0034] Secondly, the vibration mode of the emulsified asphalt vibrating stirring regeneration vehicle is started, and the specific parameters are that the vibration amplitude is 1.26 mm, the vibration frequency is 1.18 rad / s, and the stirring speed is 55 r / min.

[0035] In step S002, the asphalt pavement milling material and the activator are added to the vibrating stirring equipment, and the activated milling material is obtained after stirring.

[0036] In step S003, after the activated milling material is obtained, the aqueous acrylic hybrid epoxy emulsion, the curing agent and the cold-mixed asphalt modifier are continuously added to the vibrating stirring equipment, and pure water is added after stirring and coating at room temperature.

[0037] Firstly, 45 parts of No. 70 base asphalt are heated to 135 DEG C, then 40 parts of vegetable oil are poured into the No. 70 base asphalt and stirred uniformly, finally, 2 parts of anti-stripping agent and 3 parts of naphthenic acid manganese are added, and the stirring is continuously carried out uniformly at a temperature of 60 DEG C, and then the temperature is cooled to room temperature to obtain the cold-mixed asphalt modifier.

[0038] In the emulsified asphalt vibrating stirring regeneration vehicle, continue to add water-based acrylic hybrid epoxy emulsion, curing agent and cold-mixed asphalt modifier, the mass ratio of water-based acrylic hybrid epoxy emulsion and curing agent is 2:1, the mass ratio of water-based acrylic hybrid epoxy emulsion and asphalt pavement milling material is 20:1, the mass ratio of cold-mixed asphalt modifier and asphalt pavement milling material is 100:1.5, and stirring for 2 minutes at room temperature.

[0039] Finally, pure water is added to the emulsified asphalt vibrating stirring regeneration vehicle, the amount of pure water is 2% of the total mixture mass in the emulsified asphalt vibrating stirring regeneration vehicle, the curing reaction of the cold patch agent is triggered, and the stirring time is controlled for 2 minutes.

[0040] The asphalt pavement milling material has a particle size of ≤8 mm, the curing agent is a polyamide curing agent, the pure water is clean water with a calcium oxide content of not more than 80 mg per liter of water, and the cold-mixed asphalt modifier is a water-reactive cold patch agent that promotes curing and improves initial strength and durability when reacting with water.

[0041] The purpose of adding the activator is to restore the activity of aged asphalt and enhance the compatibility with new materials, and the purpose of adding the water-based acrylic hybrid epoxy emulsion and the curing agent is to introduce the film-forming property and gloss of acrylic and the adhesion and corrosion resistance of epoxy resin, so as to ensure that the cured environment-friendly asphalt material has both the weather resistance of acrylic and the mechanical strength of epoxy resin.

[0042] However, in the process of the curing reaction after adding pure water in the above emulsified asphalt vibrating stirring regeneration vehicle, the porosity and aging degree of the asphalt pavement milling material (RAP) are different, and the single water addition mode of the emulsified asphalt vibrating stirring regeneration vehicle is difficult to adapt to the water content fluctuation of the asphalt pavement milling material (RAP) and the change of environmental temperature and humidity, which directly affects the curing process and effect of the asphalt mixture.

[0043] Based on the above analysis, the following processing is made in the present application: (1) During the preset time period after adding pure water, the torque of the vibrating stirring device at each time and the temperature of the asphalt mixture stirred at each time are collected.

[0044] In this embodiment, the total material after adding pure water in the emulsified asphalt vibrating stirring regeneration vehicle is referred to as asphalt mixture. In order to monitor the fluidity of the asphalt mixture during the vibrating stirring process, a dynamic torque sensor is installed on the stirring shaft of the emulsified asphalt vibrating stirring regeneration vehicle to obtain the torque value at each time during the vibrating stirring process. In order to monitor the temperature of the asphalt mixture during the vibrating stirring process, a PT100 temperature sensor is installed in the emulsified asphalt vibrating stirring regeneration vehicle to obtain the temperature value of the asphalt mixture at each time. The torque value and the temperature value are both collected synchronously, and the sampling frequency of the torque sensor and the temperature sensor is 10 Hz, which can be set by the implementer according to the actual situation, and this embodiment does not limit it.

[0045] The embodiment obtains all torque values and temperature values within 1 min after the pure water is added in the emulsified asphalt vibration stirring regeneration vehicle, and forms a torque data sequence and a temperature data sequence in ascending order of time. The 1 min after the pure water is added is the preset time period of the embodiment, and the implementer can set the length of the preset time period according to the actual situation, which is not limited in the embodiment.

[0046] (2) The mutation degree of the temperature at each time and the proportion of the time when the temperature mutates are analyzed to determine the temperature sudden rising strength of the asphalt mixture, and the linear change trend of the temperature of the asphalt mixture is combined to obtain the local uneven coating evaluation value of the asphalt mixture.

[0047] In the preparation process of the environment-friendly asphalt material, an appropriate amount of pure water is added to activate the resin and curing agent in the asphalt mixture, promote the molecular chains of the resin and curing agent to cross-link with each other, form a stable network structure, accelerate the curing reaction process, and improve the strength and durability of the asphalt mixture. However, if the pure water is added excessively, the curing reaction is accelerated, a large amount of heat is released, and the temperature suddenly rises in a short time.

[0048] The embodiment obtains the temperature data sequence of the asphalt mixture, takes the temperature data sequence as the input of the moving average method, and performs smoothing processing on the temperature data sequence. The sequence output by the moving average method is taken as the first temperature sequence reflecting the overall change trend of the temperature of the asphalt mixture. The difference between the temperature data in the same order of the temperature data sequence and the first temperature sequence is calculated, which is recorded as the second temperature sequence, reflecting the temperature deviation of the short-time temperature of the asphalt mixture from the overall trend. The time when all elements in the second temperature sequence are greater than the preset temperature difference threshold Th is recorded as the sudden rising time. The greater the temperature difference threshold, the higher the tolerance error of the short-time temperature deviation of the asphalt mixture. The value range of the temperature difference threshold is set to [3, 10], and the temperature difference threshold Th = 5°C in the embodiment.

[0049] The embodiment calculates the temperature sudden rising strength of the asphalt mixture by the following formula, specifically: ; in the formula, is the temperature sudden rising strength of the asphalt mixture, is the element value of the cth sudden rising time in the second temperature sequence, is the total number of sudden rising times in the second temperature sequence, is the proportion of the sudden rising time in all times in the second temperature sequence, is the preset temperature difference threshold.

[0050] Reflecting the short-time temperature rise of the asphalt mixture in the emulsified asphalt vibration mixing regeneration vehicle, Reflecting the frequency of the temperature rise phenomenon of the asphalt mixture in the resonance mixing process, the higher the frequency, the more the short-time temperature rise, and the greater the temperature rise strength Q.

[0051] The high-frequency vibration in the emulsified asphalt vibration mixing regeneration vehicle can greatly improve the uniformity of the coated activated milling material and the water-based propionic acid hybrid epoxy emulsion. If the amount of pure water added is too much, the curing reaction will proceed violently in a short time, which can easily cause uneven stress and pores in the asphalt mixture in a short time, damage the coating relationship between the emulsion particles and the milling material, and cause local uneven coating. The emulsified asphalt vibration mixing regeneration vehicle has a large volume, and the dynamic torque sensor on the stirring shaft has weak capturing ability for local uneven coating characteristics, but local uneven coating can easily cause short-time temperature changes of the asphalt mixture, causing overall trend changes.

[0052] In this embodiment, the first temperature sequence of the asphalt mixture is obtained, and the first temperature sequence is taken as the input of the linear fitting algorithm to obtain the fitting straight line of the first temperature sequence. In this embodiment, the least squares method is used for linear fitting. In this embodiment, the difference between the fitting value of each time temperature on the fitting straight line and the true temperature value in the first temperature sequence is calculated as the fitting error of each time, and the mean value of the fitting errors of all times in the first temperature sequence is calculated. The fusion result of the mean value and the temperature rise strength is taken as the local uneven coating evaluation value of the asphalt mixture.

[0053] It should be noted that fusion means combining multiple variables, which can be calculated by addition, multiplication, and mixed addition and multiplication. In this embodiment, the product of the mean value and the temperature rise strength is taken as the local uneven coating evaluation value of the asphalt mixture.

[0054] The mean value reflects the degree of change of the overall temperature trend of the asphalt mixture, the temperature rise strength reflects the short-time temperature rise characteristics of the asphalt mixture in the resonance mixing process, the higher the degree of change of the overall temperature trend on the local asphalt mixture and the stronger the disorder, and the more significant the short-time temperature rise characteristics, the worse the uniformity of the temperature change characteristics of each region of the asphalt mixture, and the more likely the existence of uneven stress and pores in the asphalt mixture, which can cause local uneven coating. The larger the local uneven coating evaluation value is.

[0055] (3) Determine the viscosity evaluation coefficient of the asphalt mixture by the difference between the trend characteristics of the torque at each time and the trend characteristics of the torque of the standard asphalt material during preparation.

[0056] In the preparation process of the cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material, the water-based acrylic hybrid epoxy emulsion and the curing agent undergo a curing reaction, which causes irreversible changes in the thermosetting resin. The water-reactive cold patching agent is added to improve the curing reaction activity, so that the asphalt mixture can be cured at room temperature or low temperature under the condition of solving the limitation of high temperature curing. With the progress of the curing reaction of the asphalt mixture, the viscosity of the reaction system continuously increases, and the intermolecular force is enhanced, which will cause the flowability of the asphalt mixture to be weak, and the stirring resistance of the asphalt mixture to be increased.

[0057] The cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material obtained in the historical preparation process and meeting the design standard in performance and appearance without white material is used as a standard asphalt material. The torque data sequence of the standard asphalt material in the preparation process after adding pure water is obtained as a standard torque data sequence, which reflects the standard stirring resistance feedback condition of the standard asphalt material in the preparation process.

[0058] In this embodiment, the trend items of each torque value in the torque data sequence of the asphalt mixture and the standard torque data sequence of the standard asphalt material are obtained by using the STL (Seasonal and Trend decomposition using Loess) time series decomposition algorithm. The slope value of the trend items of all torques in the torque data sequence of the asphalt mixture is obtained by using the Sen's slope estimation method, which is denoted as the first slope. Similarly, the slope value of the trend items of all torques in the standard torque data sequence of the standard asphalt material is obtained by using the Sen's slope estimation method, which is denoted as the second slope. The STL time series decomposition algorithm and the Sen's slope estimation method are both known technologies, and the specific process is not described here.

[0059] The viscosity evaluation coefficient of the asphalt mixture is determined by the difference between the first slope and the second slope. It should be noted that the difference represents the difference between two variables, which can be calculated by using the absolute value of the difference, the square of the difference, the ratio, etc. In this embodiment, the ratio of the first slope to the second slope is used as the viscosity evaluation coefficient of the asphalt mixture.

[0060] The greater the actual stirring resistance feedback force is than the standard stirring resistance feedback condition, i.e., the greater the ratio of the first slope to the second slope is, the greater the stirring resistance faced by the asphalt mixture is, and the worse the flowability and the stronger the viscosity of the asphalt mixture are, and the greater the viscosity evaluation coefficient is. In order to ensure the smooth progress of the water-based acrylic hybrid epoxy environmentally friendly asphalt material in the cold paving process, it is necessary to ensure that the asphalt mixture has a certain viscosity without excessive curing of the asphalt mixture. The closer the viscosity evaluation coefficient is to the constant 1, the better the workability and product quality are, and the material produced can meet the design standard.

[0061] (4) Using the local coating uneven evaluation value and the viscosity evaluation coefficient, the solidification reaction in the vibrating stirring device is regulated, and the prepared asphalt material is obtained.

[0062] In this embodiment, the local coating uneven evaluation value and the viscosity evaluation coefficient of the asphalt mixture are normalized respectively, and the solidification characteristic vector of the asphalt mixture is formed. The higher the local coating uneven evaluation value, the faster the molecular chains of the resin and the curing agent cross-link with each other, resulting in a sudden rise in the local temperature of the asphalt mixture. Under the interference of the water content fluctuation of the asphalt pavement milling material (RAP) and the change of the environmental temperature and humidity, the solidification reaction may not be uniformly performed due to the excessive addition of pure water. The higher the viscosity evaluation coefficient, the weaker the flowability of the asphalt mixture. Under the interference of the water content fluctuation of the asphalt pavement milling material (RAP) and the change of the environmental temperature and humidity, the solidification reaction process may be faster due to the excessive addition of pure water.

[0063] In this embodiment, the solidification characteristic vectors of N times of preparation of the cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material are obtained, wherein there are an asphalt material preparation process with excessive solidification, an asphalt material preparation process with insufficient solidification, and an asphalt material preparation process with appropriate solidification. Therefore, the solidification characteristic vectors of the N times of preparation of the cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material are taken as training data, the excessive solidification, the insufficient solidification, and the appropriate solidification are taken as training labels, a training set is constructed in this way, a SVM (Support Vector Machines) linear classifier is used for classification training, a Hinge loss is used as a loss function, and a stochastic gradient descent (SGD) is used as an optimizer, so as to obtain a solidification process evaluation model of the asphalt mixture. N is the number of data samples of the training set, and N = 50 in this embodiment. The implementer can set it according to the actual situation, which is not limited in this embodiment. The SVM classifier is a known technology, and the implementer can select other feasible classification models, which is not limited in this embodiment.

[0064] The solidification characteristic vector of the asphalt mixture prepared at the present time is obtained and taken as an input of the solidification process evaluation model, so as to obtain an evaluation result of the asphalt mixture and perform solidification control of the asphalt mixture. Specifically, If the classification result of the solidification characteristic vector of the asphalt mixture is excessive solidification, the addition of pure water may be excessive. In order to prevent the solidification reaction rate from being out of control, the asphalt mixture is hardened too early, the temperature rises too high, and the asphalt material is pyrolyzed, which causes the asphalt to age. In this embodiment, 0.1% of a water reducing agent based on the total mass of the asphalt mixture is put into the emulsified asphalt vibrating stirring regeneration vehicle, so as to reduce the gap between the uneven coating, make the internal structure of the asphalt material more dense, and enhance the cold-paving strength and compactness of the asphalt material. The water reducing agent is a calcium lignosulfonate water reducing agent.

[0065] If the classification result of the curing feature vector of the asphalt mixture is curing deficiency, the amount of pure water added can be too small. In order to prevent the curing reaction from being insufficient, the tensile strength and splitting strength of the asphalt material are affected. In this embodiment, 10% of the amount of pure water added is put into the emulsified asphalt vibrating and stirring regeneration vehicle to improve the curing reaction activity and promote the curing reaction process.

[0066] If the classification result of the curing feature vector of the asphalt mixture is curing suitable, the emulsified asphalt vibrating and stirring regeneration vehicle does not perform additional processing. The curing reaction control flowchart of the asphalt mixture is as shown in Figure 2

[0067] After the curing control of the asphalt mixture is completed and the first addition of pure water in the emulsified asphalt vibrating and stirring regeneration vehicle is stirred for 2 minutes, the stirring is stopped, and the cold-mixed and cold-paved water-based acrylic acid hybrid epoxy environmentally friendly asphalt material prepared in this embodiment is obtained.

[0068] Embodiment 2 Please refer to Figure 1 which shows a step flowchart of a cold-mixed and cold-paved water-based acrylic acid hybrid epoxy environmentally friendly asphalt material preparation process provided by Embodiment 2 of the present application. The process includes: Step S001, physically mixing the water-based acrylic acid emulsion and the water-based epoxy emulsion to obtain a water-based acrylic acid hybrid epoxy emulsion.

[0069] First, the water-based acrylic acid emulsion is prepared, specifically: The raw material ratio includes: 100 parts of deionized water, 4 parts of emulsifier, 3 parts of pH buffer, 20 parts of styrene, 70 parts of acrylic ester, 15 parts of methyl acrylic acid, 13 parts of emulsion stabilizer, and 3 parts of initiator.

[0070] In this embodiment, the initiator is potassium persulfate and ammonium persulfate; the acrylic ester is a mixture of methyl methacrylate and butyl acrylate; and the emulsion stabilizer is allyl glycidyl ether.

[0071] The water-based acrylic acid emulsion preparation method specifically includes: taking 1 / 3 of 100 parts of deionized water and mixing methyl acrylic acid, styrene, and acrylic ester to obtain a mixed monomer; mixing the remaining deionized water with the emulsifier and the pH buffer to obtain an emulsifier solution; taking 80% of the obtained emulsifier solution and mixing the mixed monomer under the condition of 50°C, and adding the emulsion stabilizer to obtain a mixed monomer emulsion; heating the mixed monomer solution to 80°C, adding the initiator and the remaining emulsifier solution, and preparing the water-based acrylic acid emulsion.

[0072] Secondly, the latent curing thermoplastic epoxy resin mixture is prepared, specifically: ​The raw material ratio includes: 50 parts of bisphenol A type epoxy resin, 30 parts of bisphenol A, 25 parts of toughening agent, and the amount of catalyst is 4% of the total amount of bisphenol A type epoxy resin.

[0073] The bisphenol A type epoxy resin is specifically E-55, E-51, and E-20 epoxy resin, and the catalyst is methyl triphenyl phosphonium bromide. The toughening agent is neopentyl glycol diglycidyl ether and 1,6-hexanediol diglycidyl ether.

[0074] The preparation method of the latent curing thermoplastic epoxy resin mixture includes: first, mix the measured bisphenol A type epoxy resin and toughening agent uniformly in the reaction container, heat to 80℃, add bisphenol A, stir at 95℃ for 1 hour, after the bisphenol A is completely dissolved, add the catalyst, stir and dissolve for about 1 hour, and the latent curing thermoplastic epoxy resin mixture can be obtained.

[0075] Further, the water-based epoxy emulsion is prepared, specifically: The raw material ratio includes: 45 parts of latent curing thermoplastic epoxy resin mixture, 4 parts of emulsifier, 4 parts of cosolvent, 45 parts of deionized water, and 3 parts of defoaming agent.

[0076] The cosolvent is propylene glycol methyl ether and propylene glycol ethyl ether, and the defoaming agent is polyether siloxane copolymer.

[0077] The preparation method of the water-based epoxy emulsion is specifically: put the latent curing thermoplastic epoxy resin mixture, emulsifier, cosolvent, and defoaming agent into the reaction container, heat and dissolve uniformly, disperse with a high-speed dispersing machine, the heating temperature is 80℃, add 1 / 3 of 45 parts of deionized water, continue to disperse, after the viscosity rises, add the remaining deionized water dropwise, 1 hour drop, then cool to room temperature, and the water-based epoxy emulsion is obtained.

[0078] Finally, the water-based epoxy emulsion and the water-based acrylic emulsion are physically mixed in a mass ratio of 4:1 to obtain the water-based acrylic hybrid epoxy emulsion.

[0079] Step S002, add asphalt pavement milling material and activator to the vibrating stirring equipment, and obtain activated milling material after stirring.

[0080] First, put 90 parts of alcohol as a solvent into the reaction container, heat to 55℃, add 55 parts of stearic acid waste to the alcohol, and start stirring at a speed of 400rp / min, then add 45 parts of anthracene oil to the alcohol and maintain the stirring speed; add the emulsifier, heat to 75℃, and stir at a speed of 1300rp / min, after stirring for 30min, the activator can be obtained.

[0081] Secondly, the vibration mode is started in the emulsified asphalt vibration stirring regeneration vehicle, and the specific parameters are that the vibration amplitude is 1.26 mm, the vibration frequency is 1.18 rad / s, and the stirring speed is 55 r / min.

[0082] The 1300 parts of asphalt pavement milling material and 85 parts of activator are put into the emulsified asphalt vibration stirring regeneration vehicle for pre-mixing, and after stirring for 4 minutes, the activated milling material is obtained.

[0083] Step S003, after obtaining the activated milling material, water-based acrylic hybrid epoxy emulsion, curing agent and cold-mixed asphalt modifier are continuously added to the vibration stirring equipment, and pure water is added after stirring and coating at room temperature.

[0084] Firstly, 50 parts of No. 70 base asphalt is heated to 138℃, then 45 parts of vegetable oil is poured into the No. 70 base asphalt and stirred uniformly, finally, 2 parts of anti-peeling agent and 4 parts of naphthenic acid manganese are added, and the stirring is continued at a temperature of 65℃ until it is cooled to room temperature to obtain the cold-mixed asphalt modifier.

[0085] In the emulsified asphalt vibration stirring regeneration vehicle, water-based acrylic hybrid epoxy emulsion, curing agent and cold-mixed asphalt modifier are continuously added, the mass ratio of water-based acrylic hybrid epoxy emulsion and curing agent is 2:1, the mass ratio of water-based acrylic hybrid epoxy emulsion and asphalt pavement milling material is 20:1, and the mass ratio of cold-mixed asphalt modifier and asphalt pavement milling material is 100:2, and the stirring is carried out for 4 minutes at room temperature for coating.

[0086] Finally, pure water is added to the emulsified asphalt vibration stirring regeneration vehicle, the amount of pure water added is 2% of the total mixture mass in the emulsified asphalt vibration stirring regeneration vehicle, the curing reaction of the cold patch agent is triggered, and the stirring time is controlled to be 2 minutes.

[0087] Among them, the particle size of the asphalt pavement milling material is ≤8mm, the curing agent is a polyamide curing agent, the pure water is clean water with the calcium oxide content in each liter of water not exceeding 80mg, and the cold-mixed asphalt modifier is a water-reactive cold patch agent which promotes curing, improves initial strength and durability by reacting with water.

[0088] After adding pure water to the emulsified asphalt vibration stirring regeneration vehicle, the curing reaction of the asphalt mixture is controlled according to the same steps and methods as in Example 1, and after the stirring is completed, the cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material prepared in this example is obtained.

[0089] Example 3 Please refer to Figure 1 which shows a step flow chart of a cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material preparation process provided by Example 3 of the present application, and the process includes: Step S001, physically mix the aqueous acrylic emulsion with the aqueous epoxy emulsion to obtain the aqueous acrylic hybrid epoxy emulsion.

[0090] First, the aqueous acrylic emulsion is prepared, specifically: The raw material ratio includes: 100 parts of deionized water, 5 parts of emulsifier, 4 parts of pH buffer, 25 parts of styrene, 80 parts of acrylic ester, 20 parts of methacrylic acid, 15 parts of emulsion stabilizer, and 4 parts of initiator.

[0091] Among them, the initiator in this embodiment is ammonium persulfate; the acrylic ester is a mixture of methyl methacrylate and butyl acrylate; the emulsion stabilizer is allyl glycidyl ether.

[0092] The aqueous acrylic emulsion preparation method specifically includes: taking 1 / 3 of 100 parts of deionized water and mixing methacrylic acid, styrene and acrylic ester to obtain a mixed monomer; taking the remaining deionized water and mixing the emulsifier and the pH buffer to obtain an emulsifier solution; taking 85% of the obtained emulsifier solution and mixing the mixed monomer under the condition of 60℃, and adding the emulsion stabilizer to obtain a mixed monomer emulsion; heating the mixed monomer solution to 90℃, adding the initiator and the remaining emulsifier solution to prepare the aqueous acrylic emulsion.

[0093] Secondly, the latent curing thermoplastic epoxy resin mixture is prepared, specifically: The raw material ratio includes: 60 parts of bisphenol A type epoxy resin, 40 parts of bisphenol A, 30 parts of toughening agent, and a catalyst in an amount of 5% of the total amount of bisphenol A type epoxy resin.

[0094] Among them, the bisphenol A type epoxy resin is specifically E-55, E-51, E-44, E-20 epoxy resin, and the catalyst is triphenylphosphine, methyltriphenylphosphonium bromide. The toughening agent is neopentyl glycol diglycidyl ether, 1,4-butanediol diglycidyl ether, and 1,6-hexanediol diglycidyl ether.

[0095] The preparation method of the latent curing thermoplastic epoxy resin mixture includes: first, mix the measured bisphenol A type epoxy resin and toughening agent uniformly in a reaction container, heat to 85℃, add bisphenol A, maintain stirring at 100℃ for 1 hour, after the bisphenol A is completely dissolved, add the catalyst, and stir and dissolve for about 1 hour, then discharge to obtain the latent curing thermoplastic epoxy resin mixture.

[0096] Further, the aqueous epoxy emulsion is prepared, specifically: The raw material ratio includes: 50 parts of latent curing thermoplastic epoxy resin mixture, 5 parts of emulsifier, 5 parts of cosolvent, 50 parts of deionized water, and 5 parts of defoaming agent.

[0097] The co-solvent is ethylene glycol methyl ether, ethylene glycol ethyl ether, propylene glycol methyl ether or propylene glycol ethyl ether, and the defoaming agent is a polyether siloxane copolymer.

[0098] The preparation method of the water-based epoxy emulsion is as follows: the latent curing thermoplastic epoxy resin mixture, the emulsifier, the co-solvent and the defoaming agent are put into a reaction container and heated to be uniformly dissolved, a high-speed dispersion machine is used for dispersion, the heating temperature is 90 DEG C, 1 / 3 of 50 parts of deionized water is added, the dispersion is continuously carried out, after the viscosity rises, the remaining deionized water is added dropwise, the dropping is completed in 1 hour, and then the temperature is cooled to room temperature, to obtain the water-based epoxy emulsion.

[0099] Finally, the water-based epoxy emulsion and the water-based acrylic emulsion are physically mixed in a mass ratio of 5:1 to obtain the water-based acrylic hybrid epoxy emulsion.

[0100] Step S002, the asphalt pavement milling material and the activator are added to the vibrating stirring equipment, and the activated milling material is obtained after stirring.

[0101] Firstly, 120 parts of alcohol are put into a reaction container as a solvent, heated to 60 DEG C, 60 parts of stearic acid waste are added into the alcohol, and stirring is started with a speed of 500 rpm / min, then 50 parts of anthracene oil are added into the alcohol, and the stirring speed is maintained, an emulsifier is added, the temperature is raised to 80 DEG C, the stirring speed is 1500 rpm / min, and after stirring for 30 min, the activator is obtained.

[0102] Secondly, the vibration mode of the emulsified asphalt vibrating stirring regeneration vehicle is started, and the specific parameters are that the vibration amplitude is 1.26 mm, the vibration frequency is 1.18 rad / s, and the stirring speed is 55 r / min.

[0103] The 1500 parts of asphalt pavement milling material and 100 parts of activator are put into the emulsified asphalt vibrating stirring regeneration vehicle for pre-mixing, and the activated milling material is obtained after stirring for 5 minutes.

[0104] Step S003, after obtaining the activated milling material, the water-based acrylic hybrid epoxy emulsion, the curing agent and the cold-mixed asphalt modifier are continuously added to the vibrating stirring equipment, and pure water is added after stirring and coating at room temperature.

[0105] Firstly, 55 parts of No. 70 base asphalt are heated to 140 DEG C, then 50 parts of vegetable oil are poured into the No. 70 base asphalt and stirred uniformly, finally, 3 parts of anti-stripping agent and 5 parts of naphthenic acid manganese are added, and the stirring is continuously carried out uniformly at a temperature of 70 DEG C, and the cold-mixed asphalt modifier is obtained after cooling to room temperature.

[0106] In the emulsified asphalt vibration stirring regeneration vehicle, continue to add water-based acrylic hybrid epoxy emulsion, curing agent and cold-mixed asphalt modifier, the mass ratio of water-based acrylic hybrid epoxy emulsion and curing agent is 2:1, the mass ratio of water-based acrylic hybrid epoxy emulsion and asphalt pavement milling material is 20:1, the mass ratio of cold-mixed asphalt modifier and asphalt pavement milling material is 100:2.5, and stirring is carried out at room temperature for 5 minutes for coating.

[0107] Finally, pure water is added to the emulsified asphalt vibration stirring regeneration vehicle, the amount of pure water is 2% of the total mixture mass in the emulsified asphalt vibration stirring regeneration vehicle, the curing reaction of the cold patch agent is triggered, and the stirring time is controlled to be 2 minutes.

[0108] Among them, the particle size of the asphalt pavement milling material is ≤8mm, the curing agent is a polyamide curing agent, the pure water is specifically clean water with calcium oxide content not exceeding 80mg per liter of water, and the cold-mixed asphalt modifier is specifically a water-reactive cold patch agent which promotes curing and improves initial strength and durability by reacting with water.

[0109] After adding pure water to the emulsified asphalt vibration stirring regeneration vehicle, the curing reaction of the asphalt mixture is controlled according to the same steps and methods as in Example 1 of the present application, and after stirring is completed, the cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material prepared in this example is obtained.

[0110] In addition, the present application also discloses a construction method of the cold-mixed and cold-paved water-based acrylic hybrid epoxy environmentally friendly asphalt material, specifically: Construction environment: the construction environment requires that the environmental temperature is not lower than 10℃ and not higher than 35℃, and the humidity needs to be not higher than 85%; the loose waste slag on the cold regeneration asphalt pavement is removed and the edge is cut to a solid surface, ensuring that the foundation has no cracks and delamination, and for smooth or thin base surfaces, an epoxy permeable primer needs to be sprayed; Spreading and leveling: the water-based acrylic hybrid epoxy environmentally friendly asphalt material is cold-paved to a thickness of 3-10cm by manual or mechanical operation, and is initially leveled by using a straight edge, the joints are treated, and the straightness of the cold-paved surface is detected by using a 3m straight edge, and the error is required to be ≤3mm; Compaction: the compaction process is divided into three stages of initial compaction, recompaction and final compaction, and the vibration flat tamper is used for layer compaction, the initial compaction is carried out by 2-3 times of front static and rear vibration of a double steel wheel road roller, the recompaction is carried out by 3-4 times of high-frequency and low-amplitude vibration compaction of a single steel wheel road roller, the entire section is fully rolled to prevent uneven compaction of different parts, and then 4-6 times of rolling is carried out by using a rubber tire road roller, and the final compaction is carried out by 1-2 times of static compaction of a double steel wheel road roller to eliminate wheel marks. The initial compaction speed is controlled to be 1.5~3km / h, and the recompaction and final compaction speeds are controlled to be 2~4km / h. It is strictly forbidden to stop, add oil and add water on the newly paved surface, and it is strictly forbidden to drop diesel oil on the already paved regeneration asphalt base when adding oil.

[0111] Maintenance: spray two-component transparent sealant (finishing agent), enhance UV resistance and wear resistance, close traffic for >24 hours, avoid water accumulation.

[0112] Comparative Example 1 Comparative Example 1 adopts the same steps and parameters as Example 1 of the present application, except that after adding pure water into the emulsified asphalt vibration stirring regeneration vehicle, the curing reaction of the asphalt mixture is not controlled, and after 2 minutes of stirring time, the asphalt material prepared in Comparative Example 1 is obtained.

[0113] Comparative Example 2 Comparative Example 2 adopts the same steps and parameters as Example 2 of the present application, except that after adding pure water into the emulsified asphalt vibration stirring regeneration vehicle, the curing reaction of the asphalt mixture is not controlled, and after 2 minutes of stirring time, the asphalt material prepared in Comparative Example 2 is obtained.

[0114] Comparative Example 3 Comparative Example 3 adopts the same steps and parameters as Example 3 of the present application, except that after adding pure water into the emulsified asphalt vibration stirring regeneration vehicle, the curing reaction of the asphalt mixture is not controlled, and after 2 minutes of stirring time, the asphalt material prepared in Comparative Example 3 is obtained.

[0115] The asphalt materials prepared in the examples and comparative examples of the present application are respectively tested for performance, and the test results are shown in Table 1.

[0116] Table 1 Performance comparison results of examples and comparative examples As can be seen from Table 1, the water-based acrylic hybrid epoxy environmentally friendly asphalt material using the curing control method of the present application effectively reduces the void ratio and improves the compactness of the environmentally friendly asphalt material. Moreover, the pull strength and splitting strength are stronger, the environmentally friendly asphalt material has stronger bonding ability and better crack resistance, the environmentally friendly asphalt material obtained by resonance stirring is less likely to appear white material, and the asphalt mixture is more uniformly stirred.

[0117] It should be noted that the above-mentioned order of the examples of the present application is only for description, and does not represent the advantages and disadvantages of the examples. The above describes specific embodiments of the present specification. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0118] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be mutually referred to. Each embodiment focuses on the differences from other embodiments.

[0119] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; the technical solutions recorded in the foregoing embodiments are modified, or some technical features are replaced equivalently, without making the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and all should be included in the protection scope of the present application.

Claims

1. A process for the preparation of cold-mixed and cold-laid waterborne acrylic acid hybridized epoxy eco-friendly asphalt material, characterized by, The process comprises: First, physically mix the aqueous acrylic emulsion with the aqueous epoxy emulsion to obtain an aqueous acrylic hybrid epoxy emulsion; Second, add the asphalt pavement milling material and the activator to the vibrating stirring equipment, stir to obtain the activated milling material; after obtaining the activated milling material, continue to add the aqueous acrylic hybrid epoxy emulsion, the curing agent and the cold-mixed asphalt modifier to the vibrating stirring equipment, and stir at room temperature to coat; Finally, add pure water to the vibrating stirring equipment, collect the torque of the vibrating stirring equipment at each time and the temperature of the asphalt mixture at each time within a preset time period after adding the pure water; Analyze the mutation degree of the temperature at each time and the proportion of the time when the temperature mutates to determine the temperature sudden rising strength of the asphalt mixture, and combine the linear change trend of the temperature of the asphalt mixture to obtain the local coating uneven evaluation value of the asphalt mixture; Determine the viscosity evaluation coefficient of the asphalt mixture by the difference between the trend characteristics of the torque at each time and the trend characteristics of the torque corresponding to the preparation of the standard asphalt material; Use the local coating uneven evaluation value and the viscosity evaluation coefficient to regulate the curing reaction in the vibrating stirring equipment to obtain the prepared asphalt material.

2. A process for preparing a cold-mixing and cold-paving waterborne hybrid epoxy asphalt material according to claim 1, characterized in that, The mass ratio of the aqueous epoxy emulsion to the aqueous acrylic emulsion during physical mixing is 3:1-5:

1.

3. A process for preparing a cold-mix and cold-lay waterborne hybrid epoxy asphalt material according to claim 1, characterized in that, The mass ratio of the asphalt pavement milling material to the activator is 100:7-15:1, and the particle size of the asphalt pavement milling material is ≤8 mm.

4. A process for preparing a cold-mix and cold-lay waterborne hybrid acrylic acid-epoxy environmentally friendly asphalt material according to claim 1, characterized in that, The stirring time for obtaining the activated milling material after stirring is 2-5 minutes.

5. A process for preparing a cold-mix and cold-lay waterborne hybrid acrylic acid-epoxy environmentally friendly asphaltic material as claimed in claim 1, wherein, The mass ratio of the aqueous acrylic hybrid epoxy emulsion to the curing agent is 2:1, the mass ratio of the aqueous acrylic hybrid epoxy emulsion to the asphalt pavement milling material is 20:1, and the mass ratio of the cold-mixed asphalt modifier to the asphalt pavement milling material is 100:1.5-100:2.

5.

6. A process for preparing a cold-mix and cold-lay waterborne hybrid acrylic acid-epoxy environmentally friendly asphaltic material as claimed in claim 1, wherein, The stirring time at room temperature is 2-5 minutes, and the curing agent is a polyamide curing agent.

7. A process for preparing a cold-mix and cold-lay waterborne hybrid acrylic acid-epoxy environmentally friendly asphaltic material as claimed in claim 1, wherein, The determination of the temperature sudden rising strength comprises: Smooth all the collected temperatures at each time, calculate the difference between the temperature before smoothing at each time and the temperature after smoothing, and take the time when the difference is greater than a preset temperature threshold as the sudden rising time; Calculate the cumulative sum of the difference between the temperature threshold and the difference at all sudden rising times, and the temperature sudden rising strength is positively correlated with the cumulative sum and the proportion of the sudden rising time in all times.

8. A process for preparing a cold-mix and cold-lay waterborne hybrid acrylic acid-epoxy environmentally friendly asphaltic material as claimed in claim 7, wherein, The determination of the local coating uneven evaluation value comprises: Linearly fit the smoothed temperatures at all times, calculate the mean of the fitting errors at all times, and the local coating uneven evaluation value is the fusion result of the mean and the temperature sudden rising strength.

9. A process for preparing a cold-mix and cold-lay waterborne hybrid acrylic acid-epoxy environmentally friendly asphaltic material as claimed in claim 1, wherein, The determination of the viscosity evaluation coefficient comprises: Obtain the trend item of the torque at each time using a time series decomposition algorithm, obtain the slope of the trend item at all times, denoted as the first slope, and correspondingly, for the trend item of the torque corresponding to the preparation of the standard asphalt material, obtain the second slope, and take the ratio of the first slope to the second slope as the viscosity evaluation coefficient.

10. A process for preparing a cold-mix and cold-lay waterborne hybrid acrylic acid-epoxy environmentally friendly asphaltic material as claimed in claim 1, wherein, The regulation of the curing reaction in the vibrating stirring equipment comprises: The local coating uneven evaluation value and the viscosity evaluation coefficient of the asphalt mixture are evaluated as a whole by using a machine learning algorithm, and the evaluation result includes three types of over-curing, under-curing and suitable curing; When the evaluation result is over-curing, 0.1-0.3% of the total mass of the asphalt mixture is added to the vibrating mixing device as a water reducing agent; When the evaluation result is under-curing, 10-20% of the amount of pure water that has been added is added to the vibrating mixing device as pure water; When the evaluation result is suitable curing, no additional treatment is performed on the curing reaction in the vibrating mixing device.

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