Asphalt reclaimed material cold regeneration activator as well as preparation method and application thereof

Abstract

The invention discloses an asphalt reclaimed material cold regeneration activator and a preparation method and application thereof, and belongs to the technical field of road engineering materials, the asphalt reclaimed material cold regeneration activator provided by the invention comprises the following raw materials: an osmotic dissolving agent, and the osmotic dissolving agent comprises one or more of terpenoids, lactate and / or essential oil substances. The asphalt reclaimed material cold regeneration activator provided by the invention has the characteristics of low toxicity, low inflammability and high activation rate, can quickly soften and activate aged asphalt on the surface of the asphalt reclaimed material under the condition of normal temperature, and promotes better fusion and bonding of the aged asphalt with new emulsified asphalt or foamed asphalt; therefore, the pavement performance of the cold recycled mixture is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of road engineering materials, and particularly relates to a cold recycling activator for asphalt recycled materials, a preparation method thereof, and an application thereof. Background Art

[0003] The asphalt pavement recycling technology refers to a complete set of technologies that, after recycling, crushing, and screening the asphalt milling materials, add new asphalt binder, new aggregates, and certain external admixtures (such as cement, lime, recycling agent, etc.) to remix and form asphalt recycled mixtures that meet the requirements of road use performance, and then pave them to form a new pavement structure layer. It is mainly divided into hot recycling technology and cold recycling technology. Among them, the cold recycling technology mainly uses emulsified asphalt or foamed asphalt as the asphalt binder, and can be mixed and paved at normal temperature, with better environmental and economic benefits, and a deeper thickness for treating road diseases, having a broader application prospect.

[0004] However, under normal temperature conditions, the aged asphalt attached to the surface of waste asphalt recycled materials mainly exists in a solid form, and it is difficult to effectively play its gel role. In the cold recycling process of asphalt pavements, it is generally regarded as "black stone" for use. It is relatively difficult for new emulsified asphalt or foamed asphalt to infiltrate and fuse with the old asphalt in a solid state, and it cannot achieve the effect of full fusion and regeneration of new and old asphalt under the hot recycling process. Therefore, the strength of the cold recycled asphalt mixture is relatively low, and it is generally used for the recycling and renovation of road bases or lower surface layers, restricting its application in higher structural layers.

[0005] Secondly, although the recycling agent can effectively activate the aged asphalt and promote the fusion effect between new and old asphalt, the common recycling agents on the market are mainly used for hot recycling, with a relatively large viscosity at normal temperature and unable to form a uniform coating with waste asphalt recycled materials under the conditions of the cold recycling process; currently, there are also some recycling agents specifically for cold recycling, but in order to activate the aged asphalt at normal temperature, one or more of kerosene, diesel, aromatic oil, toluene, xylene, etc. are generally used as important solvent components of the recycling agent, having disadvantages such as high flammability, high toxicity, and poor environmental protection, and are rarely used in actual projects. Summary of the Invention

[0006] In view of this, the present invention provides a cold recycling activator for asphalt recycled materials, a preparation method thereof, and an application thereof, realizing the efficient activation, softening, and dissolution of the aged asphalt on the surface of asphalt recycled materials at normal temperature, promoting the fusion degree between the aged asphalt and new emulsified asphalt or foamed asphalt, improving the strength and comprehensive road use performance of the cold recycled mixture, and thus expanding the application scope of the asphalt pavement cold recycling process.

[0007] The technical solution of the present invention is realized as follows: In a first aspect, the present invention provides a cold recycling activator for asphalt recycled materials. The raw materials include a penetration and dissolution agent, a solubilizer, and a surface activator. The solubilizer includes absolute ethanol. The surface activator is one or more of polysorbate - 20, polysorbate - 80, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, and / or sodium dodecylbenzenesulfonate. The penetration and dissolution agent includes one or more of terpene compounds, lactate esters, and / or essential oil substances. Among them, the terpene compounds include one or more of sesquiterpenes, pinene, and / or limonene. The lactate ester includes ethyl lactate. The essential oil substances include one or more of peppermint oil and / or citronella oil.

[0008] The components of the penetration and dissolution agent belong to oily solvents. Based on the principle of similar - phase solubility, after contacting with the aged asphalt, this component can quickly dissolve the surface layer of the old asphalt and diffuse into the interior of the old asphalt, softening the colloidal structure remaining in the interior of the aged asphalt due to the volatilization loss of light components such as aromatic components and saturated components, reducing the overall viscosity of the aged asphalt, and restoring to a certain extent the flexibility, ductility, and low - temperature deformation ability of the aged asphalt.

[0009] On the basis of the above - mentioned technical solution, further, the pinene includes α - pinene or β - pinene.

[0010] Absolute ethanol has high polarity and can be used as a medium to better miscible the penetration and dissolution agent, the surface activator, and the dispersion stabilizer. At the same time, it enhances the miscibility of the cold recycling activator with materials such as emulsified asphalt or foamed asphalt and water, avoiding the problem that after the cold recycling activator contacts and adheres to the asphalt recycled materials, it cannot be well miscible with materials such as emulsified asphalt or foamed asphalt and water and remains on the surface of the asphalt recycled materials, thus affecting the adhesion of the new asphalt to the old asphalt surface and the formation of the interfacial strength. In addition, absolute ethanol has a low boiling point and strong volatility. When miscible in the cold recycling mixture, it can increase the evaporation rate of the internal moisture in the cold recycling mixture, improve the early strength of the cold recycling mixture, and shorten its curing time.

[0011] On the basis of the above - mentioned technical solution, further, the raw materials also include a surface dispersion stabilizer, water, and additives. Among them, the dispersion stabilizer includes one or more of dodecylphenol, cashew phenol, and / or lauric acid. The additives include one or more of ammonium phosphate, zinc borate, and / or phosphate esters.

[0012] On the basis of the above - mentioned technical solution, further, the phosphate ester includes triethyl phosphate or diphenylmethyl phosphate.

[0013] The surface activator, as an emulsifier, synergistically promotes the miscibility of the mixture formed after the penetration and dissolution agent dissolves part of the aged asphalt and the regeneration activator with emulsified asphalt or foamed asphalt, water, etc.

[0014] Under the synergistic effect of the solubilizer absolute ethanol and the surfactant, the penetration and dissolution agent (terpenoid compounds, lactate esters, and / or essential oil substances) can activate, soften, and dissolve the aged asphalt on the surface of the asphalt recycled material at normal temperature in a water-containing environment (both emulsified asphalt and foamed asphalt contain a certain amount of water).

[0015] Therefore, the solubilizer and the surfactant are important components in the cold recycling activator for asphalt recycled materials, and their proportions should not be too low when preparing the cold recycling activator for asphalt recycled materials. Otherwise, due to the repulsion between oil and water, it will be difficult for the penetration activator to effectively contact, penetrate, and soften the aged asphalt in a water-containing environment.

[0016] The components of the dispersion stabilizer can, through the attraction of their polar groups, keep the mixture formed after the penetration and dissolution agent dissolves part of the aged asphalt in a stable dispersion state, preventing the mixture from accumulating during the mixing and preparation of the cold recycled mixture and forming micelles with mineral powder, cement, etc., which will affect the uniformity and strength formation of the cold recycled mixture.

[0017] The addition of water can increase the flash point of the material and improve the application safety of the material.

[0018] The auxiliary agent has a flame retardant effect and can improve the application safety of the material.

[0019] On the basis of the above technical solutions, further, it includes raw materials in the following parts by weight: Penetration and dissolution agent: 30 - 70 parts; Solubilizer: 15 - 40 parts; Surfactant: 10 - 30 parts; Dispersion stabilizer: 0.5 - 5 parts; Water: 8 - 15 parts; Auxiliary agent: 0.5 - 2 parts.

[0020] In a second aspect, the present invention provides a preparation method for the above cold recycling activator for asphalt recycled materials, including the following steps: S1. Mix the penetration and dissolution agent and the solubilizer to obtain mixture A; S2. Mix the surfactant and the dispersion stabilizer with mixture A in sequence to obtain mixture B; S3. Mix water and the auxiliary agent with mixture B in sequence to obtain the cold recycling activator for asphalt recycled materials.

[0021] In a third aspect, the present invention provides an application of the above cold recycling activator for asphalt recycled materials in the regeneration and transformation of the base or lower layer of an asphalt concrete road.

[0022] On the basis of the above technical solutions, further, the method for the application includes: mixing the asphalt recycling material with one or more of emulsified asphalt, foamed asphalt, aggregate, cement, and / or mineral powder and the cold recycling activator for asphalt recycling material evenly.

[0023] On the basis of the above technical solutions, further, the mass ratio of the asphalt recycling material to the cold recycling activator for asphalt recycling material is 1:(0.3% - 1.0%).

[0024] Mix evenly according to the above method so that the cold recycling activator for asphalt recycling material is evenly dispersed and adheres to the surface of the asphalt recycling material. This method is applicable to in-situ cold recycling and plant-mixed cold recycling.

[0025] Compared with the prior art, the present invention has the following beneficial effects: (1) The penetration and dissolution components adopted in the present invention are all low-toxic solvent materials, and have good biodegradability, less impact on the environment and the health of construction workers, and strong feasibility.

[0026] (2) The cold recycling activator for asphalt recycling material of the present invention can efficiently and quickly dissolve, soften and activate the old asphalt on the surface of the asphalt recycling material, without the need for pre-mixing and pre-wetting with the asphalt recycling material in advance, improving the production efficiency of the cold recycled mixture.

[0027] (3) The cold recycling activator for asphalt recycling material of the present invention has good fluidity, can replace water to wet the RAP material and improve the workability of mixing, thereby reducing the amount of externally added water and shortening the time for the cold recycled mixture to evaporate water and form strength, achieving the improvement of the early strength of the cold recycled mixture.

[0028] (4) The cold recycled mixture after adding the cold recycling activator for asphalt recycling material of the present invention achieves effects such as a significant reduction in the internal void ratio, improvement in crack resistance and fatigue crack resistance, which is beneficial to extending the service life of the cold recycled asphalt pavement. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1For the physical properties of the cold recycling activator and its penetration and dissolution effects on RAP; a) shows the appearance properties of the cold recycling agent (yellowish transparent); b) shows the fluidity of the cold recycling agent under the action of a magnetic rotor stirrer; c) shows the input of RAP material into the cold recycling agent; d) shows that after stirring for 1 minute, the aged asphalt on the surface of RAP dissolves and precipitates, and the color of the cold recycling agent becomes darker (yellowish brown) and turbid; e) shows that after standing for 30 minutes, the color of the recycling agent continues to darken (black). Detailed implementation manners

[0031] The following will describe clearly and completely the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The preparation method of the cold recycling activator for asphalt recycled materials of the present invention includes the following steps: (1) The penetration and dissolution agent and the solubilizer are proportionally added to the reaction kettle while stirring, the stirring rate is 1500 - 3000 r / min, the stirring time is 45 s - 1 min 30 s, and after stirring evenly, a mixture A is obtained.

[0033] (2) The stirring rate is increased to 3500 - 5000 r / min, the surface activator and the dispersion stabilizer are successively added into the reaction kettle, and are mixed with the mixture A while stirring. The stirring time is 3 min - 5 min, and after stirring evenly, a mixture B is obtained.

[0034] (3) The stirring rate is maintained at 3500 - 5000 r / min, water and additives are successively added into the reaction kettle, and are mixed with the mixture B while stirring. The stirring time is 5 min, and finally the cold recycling activator for asphalt recycled materials is obtained.

[0035] In the following detailed implementation manners, alkylphenol polyoxyethylene ether is purchased from Jinan Yuanlian Chemical Co., Ltd., and the product number is OP-10; Fatty alcohol polyoxyethylene ether is purchased from Jinan Yuanlian Chemical Co., Ltd., and the product number is AEO-9.

[0036] Example 1 This example provides a cold recycling activator for asphalt recycled materials, and the raw materials include: Penetration and dissolution agent: 160 g of sesquiterpene, 120 g of α-pinene, 200 g of limonene; Solubilizer: 200 g of absolute ethanol; Surface activator: 50 g of polysorbate-80, 100 g of fatty alcohol polyoxyethylene ether; Dispersion stabilizer: 10 g of cardanol, 5 g of lauric acid; Water: 100 g; Auxiliary agent: 8 g of ammonium phosphate.

[0037] The preparation method comprises the following steps: (1) Put the penetration solubilizer and solubilizer into the reaction kettle while stirring according to the ratio, the stirring rate is 2500 r / min, the stirring time is 1 min, and after stirring evenly, a mixture A is obtained.

[0038] (2) Raise the stirring rate to 4500 r / min, put the surfactant and dispersion stabilizer into the reaction kettle in sequence, mix them with mixture A while stirring, the stirring time is 5 min, and after stirring evenly, a mixture B is obtained.

[0039] (3) Maintain the stirring rate at 4500 r / min, put water and auxiliary agent into the reaction kettle in sequence, mix them with mixture B while stirring, the stirring time is 5 min, and finally an asphalt recovery cold regeneration activator is obtained.

[0040] Detect the physical properties of the prepared asphalt recovery cold regeneration activator, and the results are shown in Table 1. Its properties, fluidity and the rapid penetration and dissolution effect with RAP are as Figure 1 shown. From Table 1 and Figure 1 it can be seen that the asphalt recovery cold regeneration activator of the present invention has low viscosity and fluidity close to that of water.

[0041] Table 1 Physical properties of asphalt recovery cold regeneration activator

[0042] Example 2 This example provides an asphalt recovery cold regeneration activator, which is different from Example 1 in that the raw materials include: Penetration solubilizer: 100 g of sesquiterpene, 100 g of limonene, 100 g of citronella oil; Solubilizer: 150 g of absolute ethanol; Surfactant: 50 g of alkylphenol polyoxyethylene ether, 50 g of sodium dodecylbenzenesulfonate; Dispersion stabilizer: 2.5 g of dodecylphenol, 2.5 g of lauric acid; Water: 80 g; Auxiliary agent: 2.5 g of ammonium phosphate, 2.5 g of triethyl phosphate.

[0043] Detect the physical properties of the prepared asphalt recovery cold regeneration activator, and the results are shown in Table 2. From Table 2, it can be seen that the asphalt recovery cold regeneration activator of the present invention has low viscosity and fluidity close to that of water.

[0044] Table 2 Physical Properties of Cold Recycling Activator for Asphalt Recycling Material

[0045] Example 3 This example provides a cold recycling activator for asphalt recycling material. The difference from Example 1 is that the raw materials include: Penetration and dissolution agent: 400 g of β-pinene, 300 g of ethyl lactate; Solubilizer: 400 g of absolute ethanol; Surfactant: 300 g of alkylphenol polyoxyethylene ether; Dispersion stabilizer: 50 g of cardanol; Water: 150 g; Auxiliary agent: 10 g of zinc borate, 10 g of diphenyl phosphate.

[0046] The physical properties of the prepared cold recycling activator for asphalt recycling material were detected. The results are shown in Table 3. It can be seen from Table 3 that the cold recycling activator for asphalt recycling material of the present invention has a low viscosity and a fluidity close to that of water.

[0047] Table 3 Physical Properties of Cold Recycling Activator for Asphalt Recycling Material

[0048] Example 4 This example provides a cold recycling activator for asphalt recycling material. The difference from Example 1 is that the raw materials include: Penetration and dissolution agent: 180 g of limonene, 150 g of α-pinene, 100 g of mentha arvensis oil; Solubilizer: 220 g of absolute ethanol; Surfactant: 80 g of fatty alcohol polyoxyethylene ether, 120 g of alkylphenol polyoxyethylene ether; Dispersion stabilizer: 5 g of dodecylphenol, 5 g of cardanol; Water: 150 g; Auxiliary agent: 12 g of zinc borate.

[0049] Example 5 This example provides a cold recycling activator for asphalt recycling material. The difference from Example 1 is that the raw materials include: Penetration and dissolution agent: 200 g of citronella oil and 200 g of mentha arvensis oil; Solubilizer: 220 g of absolute ethanol; Surfactant: 50 g of polysorbate-20, 50 g of polysorbate-80, 50 g of alkylphenol polyoxyethylene ether, 50 g of fatty alcohol polyoxyethylene ether, and 50 g of sodium dodecylbenzenesulfonate; Dispersion stabilizer: 2 g of dodecylphenol, 2 g of cardanol, and 2 g of lauric acid; Water: 150 g; Auxiliary agents: 5 g of ammonium phosphate, 5 g of zinc borate, and 5 g of diphenyl phosphate.

[0050] Example 6 This example provides a cold recycling activator for asphalt recycling materials. The difference from Example 1 is that the raw materials include: Penetrating and dissolving agent: 400 g of ethyl lactate; Solubilizer: 220 g of absolute ethanol; Surfactant: 120 g of fatty alcohol polyoxyethylene ether; Dispersion stabilizer: 10 g of lauric acid; Water: 150 g; Auxiliary agents: 12 g of diphenyl phosphate.

[0051] Example 7 This example provides a cold recycling activator for asphalt recycling materials. The difference from Example 1 is that the raw materials include: Penetrating and dissolving agent: 180 g of limonene, 150 g of α-pinene, 100 g of ethyl lactate, 100 g of peppermint oil; Solubilizer: 220 g of absolute ethanol; Surfactant: 200 g of fatty alcohol polyoxyethylene ether; Dispersion stabilizer: 10 g of dodecylphenol; Water: 150 g; Auxiliary agents: 12 g of zinc borate.

[0052] Comparative Example 1 The difference between this comparative example and Example 1 is that it does not contain a penetrating and dissolving agent.

[0053] Comparative Example 2 The difference between this comparative example and Example 1 is that it does not contain a solubilizer.

[0054] Comparative Example 3 The difference between this comparative example and Example 1 is that the weight fraction of the penetrating and dissolving agent is 100 parts (1000 g).

[0055] Comparative Example 4 The difference between this comparative example and Example 1 is that the weight fraction of the solubilizer is 100 parts (1000 g).

[0056] Performance testing: Testing of the pavement performance indicators of emulsified asphalt cold recycled mixtures The asphalt recycled material cold recycling activator prepared in Examples 1-4 and Comparative Examples 1-4 was mixed with asphalt recycled material, mineral powder, cement, manufactured sand, emulsified asphalt, and water to prepare an emulsified asphalt cold recycling mixture. Specimens were formed according to the "Technical Specification for Highway Asphalt Pavement Recycling" and the "Test Procedures for Asphalt and Asphalt Mixtures", and the road performance indicators such as the void ratio, splitting strength at 15°C, dry-wet splitting strength ratio, ultimate failure strain at -10°C, and indirect tensile fatigue life (0.3 stress ratio) of the emulsified asphalt cold recycling mixture were tested. The test results are shown in Table 4.

[0057] Among them, the weight fraction ratio of each material in the emulsified asphalt cold recycling mixture is: 88 parts of asphalt recycled material, 3 parts of mineral powder, 1 part of cement, 8 parts of manufactured sand, 4.5 parts of emulsified asphalt, 2.8 parts of water, and 0.6 parts of cold recycling activator.

[0058] Table 4 Summary of Road Performance of Emulsified Asphalt Cold Recycling Mixtures in Different Examples and Comparative Examples

[0059] It can be found from Table 4 above that compared with the emulsified asphalt recycled mixture without adding cold recycling activator, the void ratios of Examples 1-7 have all decreased, and the higher the content of the cold recycling activator component, the more obvious the decrease in the void ratio. Secondly, after adding the cold recycling activator, the splitting strength at 15°C of each group of examples has decreased, but the decrease is not large (the maximum decrease is 6.7%), indicating that the addition of an appropriate amount of cold recycling activator does not overly soften the RAP material, and the cold recycling mixture still has sufficient mechanical strength; the dry-wet splitting strength ratio, ultimate failure strain at -10°C, and indirect tensile fatigue life of Examples 1-7 have all increased, indicating that the addition of the cold recycling activator has the effect of softening and activating the aged asphalt on the surface of RAP, enhancing its interfacial fusion with the new emulsified asphalt, and improving the water stability, low-temperature crack resistance, and fatigue crack resistance of the cold recycling mixture.

[0060] From the comparison between Comparative Example 1 and Example 1, it can be seen that when the penetration and dissolution agent is not contained, the cold recycling activator cannot dissolve the aged asphalt on the surface of RAP, nor can it supplement the light components such as aromatic components and saturated components missing in the aged asphalt. Therefore, it cannot restore the flexibility, ductility, and low-temperature deformation ability of the aged asphalt. The cold recycling mixture prepared has little difference in various road performance indicators from the group without adding cold recycling activator and has no obvious improvement effect.

[0061] From the comparison between Comparative Example 2 and Example 1, it can be seen that although adding a cold recycling activator without a solubilizer can achieve a certain effect of softening the old asphalt, and the void ratio becomes smaller compared to the group without adding a cold recycling activator; however, due to the lack of the dispersion and solubilization effects of the solubilizer, the miscibility of the penetration solvent, surfactant, and dispersion stabilizer becomes poor, and the compatibility of the formed cold recycling activator and emulsified asphalt also becomes poor, resulting in a decrease in the splitting strength at 15°C, the ratio of dry-wet splitting strength, the ultimate failure strain at -10°C, the indirect tensile fatigue life, etc. compared to the group without adding a cold recycling activator, indicating that the lack of a solubilizer significantly affects the adhesion of the new asphalt to the surface of the old asphalt and the formation of the interfacial strength.

[0062] From the comparison between Comparative Example 3 and Example 1, it can be seen that when the penetration solvent is excessive, the cold recycling activator has a significant softening effect on RAP, and the void ratio is lower than that of Examples 1 to 7 under normal blending ratio conditions, and both the low-temperature cracking resistance and the fatigue cracking resistance are improved; however, due to excessive softening of the aged asphalt on the surface of RAP, there is an obvious problem of insufficient splitting strength, only 0.47 MPa, which cannot meet the technical requirement of the industry standard for the splitting strength of cold recycled mixture at 15°C ≥ 0.5 MPa.

[0063] From the comparison between Comparative Example 4 and Example 1, it can be seen that when the solubilizer is excessive, it is equivalent to diluting the proportion of the penetration and dissolution components. Therefore, when adding the same 0.6% dosage of the cold recycling activator to the cold recycled mixture, the penetration and dissolution components are difficult to play an effective role in softening and activating the old asphalt on the surface of RAP; and since the anhydrous ethanol of the solubilizer itself has a certain effect of promoting the demulsification of emulsified asphalt, when the solubilizer is excessive, it will cause the emulsified asphalt to demulsify and precipitate too quickly, which to a certain extent affects the uniformity of the coating of the emulsified asphalt and RAP during the mixing process. Therefore, all the road performance of the cold recycled mixture in Comparative Example 4 is slightly lower than that of the group without adding a cold recycling activator.

[0064] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cold recycling activator for asphalt recycled materials, characterized in that, The raw materials include a penetration and dissolution agent, a solubilizer, and a surfactant. The solubilizer includes absolute ethanol. The surfactant is one or more of polysorbate-20, polysorbate-80, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, and / or sodium dodecylbenzenesulfonate. The penetration and dissolution agent includes one or more of terpene compounds, lactate esters, and / or essential oil substances. Among them, the terpene compounds include one or more of sesquiterpenes, pinene, and / or limonene. The lactate ester includes ethyl lactate. The essential oil substances include one or more of peppermint oil and / or citronella oil.

2. The cold recycling activator for asphalt recycled materials according to claim 1, characterized in that, The raw materials further include a dispersion stabilizer, water, and an auxiliary agent. Among them, the dispersion stabilizer includes one or more of dodecylphenol, cardanol, and / or lauric acid. The auxiliary agent includes one or more of ammonium phosphate, zinc borate, and / or phosphate ester.

3. The cold recycling activator for asphalt recycled materials according to claim 1, characterized in that, It includes the following raw materials in parts by weight: Penetration and dissolution agent: 30 - 70 parts; Solubilizer: 15 - 40 parts; Surfactant: 10 - 30 parts; Dispersion stabilizer: 0.5 - 5 parts; Water: 8 - 15 parts; Auxiliary agent: 0.5 - 2 parts.

4. The preparation method of the cold recycling activator for asphalt recycled materials according to any one of claims 1 to 3, characterized in that, It includes the following steps: S1. Mix the penetration and dissolution agent and the solubilizer to obtain mixture A; S2. Mix the surfactant and the dispersion stabilizer with mixture A in sequence to obtain mixture B; S3. Mix water and the auxiliary agent with mixture B in sequence to obtain the cold recycling activator for asphalt recovery materials.

5. Application of the cold recycling activator for asphalt recovery materials according to any one of claims 1 - 4 in the regeneration and transformation of the base or lower layer of an asphalt concrete road.

6. The application according to claim 5, wherein The method of the application includes: mixing the asphalt recovery materials with one or more of emulsified asphalt, foamed asphalt, aggregate, cement, and / or mineral powder and the cold recycling activator for asphalt recovery materials.

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