Infiltration regeneration fog sealing agent for asphalt pavement and construction method of infiltration regeneration fog sealing agent

Abstract

The invention provides an infiltration regeneration fog sealing agent for an asphalt pavement and a construction method of the infiltration regeneration fog sealing agent, and relates to the technical field of pavement maintenance materials. The infiltration regeneration fog sealing agent for the asphalt pavement comprises a regenerant, the regenerant comprises the following raw materials in parts by weight: 80-100 parts of regenerated oil, 1-3 parts of an interface regulator, 18-30 parts of a penetrant, 1-3 parts of an emulsifier and 100-200 parts of water, and the regenerated oil is biomass oil. The construction method comprises the following steps: closing traffic and cleaning a road surface; spraying a regenerant and curing; spraying a protective agent and curing; carborundum is spread; and opening traffic. The infiltration regeneration fog sealing agent has excellent infiltration capacity, does not contain asphalt components and can be completely absorbed by an aged asphalt pavement, and the action depth can reach 3-4 cm.

Description

Technical Field

[0001] The present application relates to the technical field of pavement maintenance materials, and in particular to a bottom-penetrating regeneration fog sealant for asphalt pavement and a construction method thereof. Background Art

[0002] Asphalt pavement will be irreversibly aged after being exposed to the sun and rain, the light components will evaporate, the asphalt content will increase, the asphalt will become hard and brittle, and lose its elasticity, making the asphalt pavement prone to cracking.

[0003] As an economical and effective preventive maintenance technology, fog seal can effectively seal the tiny cracks and surface voids of asphalt pavement. Fog seal technology is to spray the fog seal material directly on the surface of the asphalt road to quickly provide a closed surface for the asphalt road; it can seal the pores and micro cracks on the surface of the asphalt road, prevent moisture and air from entering the pavement structure and causing damage to the pavement structure, and has an automatic healing effect on small cracks in the pavement; it can activate aging asphalt, renew and restore the oxidized asphalt paste on the surface, make the pavement "rejuvenate", and extend the service life of the asphalt pavement.

[0004] However, the fog seal is constructed by spraying or applying reducing materials. This construction method determines that it can only act on the surface of the road surface and is difficult to reach deeper levels. Generally speaking, the depth of action of the fog seal material is only 0.5 to 1 cm, which cannot fully regenerate the full depth of the surface asphalt concrete. Therefore, when the deep-seated problems of the road surface are not effectively dealt with, the fog seal may only temporarily alleviate the surface problems, but cannot fundamentally solve the structural problems of the road surface, and has the effect of "treating the symptoms but not the root cause". Summary of the invention

[0005] In order to improve the problem that the current fog seal material can only act on the surface of the road surface, resulting in poor road regeneration effect, the present application provides a bottom seepage regeneration fog seal agent for asphalt pavement and a construction method thereof.

[0006] In the first aspect, the present application provides an infiltration regeneration fog seal agent for asphalt pavement, adopting the following technical scheme: an infiltration regeneration fog seal agent for asphalt pavement, comprising a regeneration agent, the regeneration agent comprising the following raw materials in parts by weight: 80-100 parts of regenerative oil, 1-3 parts of interface adjuster, 18-30 parts of penetrant, 1-3 parts of emulsifier, 100-200 parts of water, the regenerative oil is biomass oil.

[0007] The infiltration regeneration fog seal agent for asphalt pavement provided in the present application specifically includes a regeneration agent, which utilizes the penetration effect of the penetrant to drive the emulsion system with regenerative oil as the main component to penetrate deeply into the bottom of the asphalt pavement, and fill the tiny cracks and pores of the asphalt pavement, and utilizes the softening effect of the regenerative oil to restore the flexibility and elasticity of the aged asphalt.

[0008] The infiltration regeneration fog seal agent of the present application has excellent penetration ability and does not contain asphalt components. It can be completely absorbed by the aged asphalt pavement and the action depth can reach 3-4cm. The infiltration regeneration fog seal agent of the present application can be applied alone as a preventive maintenance method, or it can be applied together with micro-surfacing, slurry seal, crushed stone seal and ultra-thin cover.

[0009] Optionally, the regenerative oil is selected from one or more of palm oil, castor oil, rapeseed oil, soybean oil and turpentine oil.

[0010] The present application adopts regenerative oil as the main component of the regeneration agent, and the regenerative oil mainly uses the biomass oil listed above. The biomass oil uses the more aromatic components it contains to play a harmonizing role. Since the aged asphalt is exposed to the air for a long time, its molecular structure will change, and more oxygen-containing functional groups such as carbonyl and sulfoxide groups will be produced. The presence of these functional groups will aggravate the agglomeration of asphaltene, resulting in a decrease in asphalt performance. Therefore, the aromatic components in the biomass oil can interact with these oxygen-containing functional groups, reduce the content of carbonyl and sulfoxide groups, reduce the degree of agglomeration of asphaltene in long-aged asphalt, restore the good fluidity and adhesion of asphalt, and make the surface micro-morphology rough, increase the roughness of the "honeycomb structure" morphology, and stably realize the regeneration effect of biomass oil on aged asphalt.

[0011] Optionally, the interface adjuster is a general non-ionic polymer dispersant.

[0012] Further, the interface adjuster is selected from one or more of TEGO Dispers 655, TEGO Dispers 710, or TEGO Dispers 670. More preferably, the interface adjuster is TEGO Dispers 655.

[0013] The present invention adds an interface regulator to the regeneration agent, which can effectively adjust the compatibility between various biomass oils and reduce the interfacial tension of the regeneration oil, so that it can better wet the asphalt pavement and promote its infiltration and absorption. In addition, the interface regulator can also enhance the stability of the emulsion system.

[0014] Optionally, the penetrant is selected from one or more of octane, isopropanol, and n-heptane.

[0015] The penetrant of the present application can significantly reduce the surface tension of the regeneration agent, making it easier to penetrate into the tiny cracks and pores of the asphalt pavement, so the penetrant can promote the full penetration of the regenerated oil to achieve a deeper repair effect. At the same time, the penetrant can also help the regeneration agent form a stable network structure inside the asphalt, improving the overall strength and durability of the asphalt pavement.

[0016] Optionally, the emulsifier is selected from one or both of Indulin AA57 and Indulin AA63D.

[0017] The emulsifier used in the regeneration agent plays the role of emulsifying the regenerative oil, water and other additives into a stable emulsion in the fog seal agent. The emulsified emulsion is more easily absorbed by the asphalt pavement and is more evenly distributed. The emulsifier of the present application can ensure that the emulsion remains stable during storage and use, without stratification or precipitation.

[0018] Optionally, the preparation method of the regeneration agent is as follows: S11, first heating the regenerative oil to 100-120° C., then adding the penetrant and the interface adjuster thereto, maintaining the temperature, and fully stirring for 20-30 minutes to obtain a mixture A, and then raising the temperature of the mixture A to 145-155° C. for standby use; S12, adding an emulsifier into water, fully dissolving and mixing to obtain soap solution B, maintaining the temperature of soap solution B at 55-65° C. for standby use; S13, slowly adding the mixture A to the soap solution B at a uniform speed to obtain a uniform emulsion system, which is the regeneration agent.

[0019] In the process of preparing the regeneration agent in the present application, the water phase and the oil phase are mixed separately and maintained at a suitable high temperature, and finally the two are mixed to form a stable and uniform emulsion system. This emulsion system has good stability and dispersibility, which can ensure that it is evenly sprayed on the asphalt pavement during the construction process and play the expected repair and protection role.

[0020] Optionally, a protective agent is also included, which includes the following raw materials in parts by weight: 80-100 parts of hard asphalt, 1-5 parts of nano-oxide, 0.1-0.3 parts of dispersant, 1-3 parts of emulsifier, and 100-200 parts of water.

[0021] The present application also provides a protective layer in the infiltration regeneration fog seal agent, which has excellent shielding and ultraviolet absorption effects, so it has excellent anti-aging performance. At the same time, the protective layer has excellent adhesion and can form a whole with the road surface to which the above-mentioned regeneration agent is applied, and has good durability.

[0022] Optionally, the hard asphalt is No. 30 base asphalt and / or No. 50 base asphalt.

[0023] Although the regeneration agent provided in this application can fully infiltrate the regenerative oil through the interface adjuster and the penetrant, it cannot achieve 100% infiltration without residue. There will still be a trace amount of regeneration agent remaining on the asphalt road surface. Although the residual amount is very small, this part of the residual regeneration agent will still reduce the friction coefficient of the road surface, posing a hidden danger to driving safety. Therefore, this application further limits the base asphalt in the protective layer to No. 30 base asphalt or No. 50 base asphalt, or a combination of the above two, and can use the hard asphalt to "absorb" the residual regenerative oil. After absorbing the oil, the hard asphalt will "convert" to No. 70 asphalt, which can not only prevent the road surface from becoming slippery, but also improve the adhesion of the asphalt and improve the infiltration regeneration durability of the entire fog seal layer.

[0024] Optionally, the nano-sized oxide is selected from one or more of nano-sized titanium dioxide, nano-sized zinc oxide and nano-sized silicon dioxide.

[0025] Furthermore, the particle size of the nano-scale oxide is 50-100 nm.

[0026] Nano-scale oxides are evenly dispersed in hard asphalt under the action of dispersants to form a dense protective layer, which effectively blocks the erosion of asphalt pavement by external environmental factors. In addition, the nano-scale oxides listed above can absorb energy from ultraviolet rays and convert it into heat or other forms of energy, thereby reducing direct ultraviolet radiation on the material; they can also absorb and convert free radicals in oxygen to reduce the oxidation reaction of free radicals on the material. This anti-oxidation property helps protect the material from the effects of oxidative aging and prolong the service life of the material.

[0027] Optionally, the dispersant is selected from one or more of sodium hexametaphosphate, sodium tripolyphosphate, and potassium trimetaphosphate.

[0028] Dispersants can ensure the uniform dispersion of nano-sized oxides in the asphalt matrix, preventing them from agglomerating and settling. The function of dispersants is to adjust the charge distribution in the system, avoid agglomeration of nano-sized oxides, and increase the stability of the system.

[0029] Optionally, the emulsifier is selected from one or both of Indulin AA57 and Indulin AA63D.

[0030] The emulsifier used in the protective agent plays the role of emulsifying the regenerative oil, water and other additives into a stable emulsion in the mist sealer. The emulsified emulsion is more easily absorbed by the asphalt pavement and is more evenly distributed. In addition, the emulsifier of the present application can ensure that the emulsion remains stable during storage and use, without stratification or precipitation.

[0031] Optionally, the preparation method of the protective agent comprises the following steps: S21, first heating the hard asphalt to 130-140° C., then adding the nano oxide thereto, maintaining the temperature, and fully stirring for 20-30 min to obtain a mixture C, then raising the temperature of the mixture C to 140-155° C. for standby use; S22, adding an emulsifier to water, adding a dispersant, and fully dissolving and mixing to obtain a soap solution D, maintaining the temperature of the soap solution D at 55-65° C. for standby use; S23, slowly adding the mixture C to the soap solution D at a uniform speed to obtain a uniform emulsion system, which is the protective agent.

[0032] In the process of preparing the protective agent, the present application mixes the water phase and the oil phase separately and keeps them at a suitable high temperature, and finally mixes the two to form a stable and uniform emulsion system. This emulsion system has good stability and dispersibility, which can ensure that it is evenly sprayed on the asphalt pavement during the construction process and plays the expected repair and protection role.

[0033] In the second aspect, the present application also provides a construction method of a bottom-penetrating regenerated fog sealant for asphalt pavement, using the following technical solution: A construction method of a bottom-penetrating regenerating fog sealant for asphalt pavement comprises the following steps: S31: Close traffic and clear the road; S32: spray the regeneration agent and perform curing, the curing time is 1-4h; S33: spray the protective agent and perform curing, the curing time is 1-2h; S34: Spread corundum, the corundum is 40-80 mesh, the amount of corundum is 0.5-1.5kg / m 2 ; S35: Open to traffic.

[0034] This application repairs the asphalt pavement by spraying the regeneration agent first and then the protective agent. The deep penetration of the regeneration agent is used to regenerate the entire asphalt pavement, which significantly reduces the aging degree and brittleness of the asphalt pavement and enhances the flexibility and elasticity of the asphalt pavement. The protective agent is used on the regeneration agent to further close the tiny cracks and surface voids on the pavement, and improve the waterproofness and wear resistance of the pavement. In addition, the protective agent can also enhance the bonding force between the aggregates of the asphalt surface layer, and play a role in protecting the old oxidized asphalt pavement. At the same time, the protective agent also has anti-aging and anti-ultraviolet effects, which can resist the secondary aging of the regenerated asphalt, thereby helping to restore and improve the overall performance of the asphalt pavement and extend the service life of the road.

[0035] In summary, the present application includes at least one of the following beneficial effects: 1. The infiltration regeneration fog seal agent of the present application is composed of a regeneration agent and a protective agent, which can not only deeply regenerate the aged asphalt of the original road surface, with an effective depth of up to 3-4cm; but also effectively resist the aging erosion of ultraviolet rays and greatly delay the time of secondary aging.

[0036] 2. The infiltration regeneration fog sealer of the present application has basically no construction thickness, will not affect the elevation and load of the road surface, and can be applied to almost any asphalt pavement scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The cross-sectional view of the core sample at a depth of 3 cm after the infiltration regeneration fog seal agent provided in Example 1 of the present application was applied for 3 months is shown; Figure 2 A cross-sectional view of a core sample at a depth of 3 cm is shown 3 months after the infiltration regeneration fog seal agent provided in Comparative Example 1 of the present application was applied. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below.

[0039] The present application provides an infiltration regeneration fog sealer for asphalt pavement, which is applied to aged or cracked asphalt pavement. The infiltration regeneration fog sealer includes a regeneration agent and a protective agent, and during construction, the regeneration agent is first used to deeply restore the aged asphalt pavement, and then the protective agent is used to resist the aging erosion of ultraviolet rays.

[0040] Specifically, the regeneration agent includes the following raw materials in parts by weight: 80-100 parts of regenerative oil, 1-3 parts of interface adjuster, 18-30 parts of penetrant, 1-3 parts of emulsifier, and 100-200 parts of water; the regenerative oil is biomass oil, which can be selected from one or more of palm oil, castor oil, rapeseed oil, soybean oil, and turpentine.

[0041] The interface adjuster is a universal nonionic polymer dispersant, which can be selected from one or more of TEGO Dispers 655, TEGO Dispers 710 or TEGO Dispers 670; the penetrant can be selected from one or more of octane, isopropanol and n-heptane; the emulsifier is selected from one or both of Indulin AA57 and Indulin AA63D.

[0042] Accordingly, the present invention also provides a method for preparing a regeneration agent, comprising the following steps: S11, first heat the regenerative oil to 100-120° C., then add the penetrant and the interface adjuster thereto, maintain the temperature, and stir thoroughly for 20-30 minutes to obtain a mixture A, then raise the temperature of the mixture A to 145-155° C. for standby use; S12, adding an emulsifier into water, fully dissolving and mixing to obtain soap solution B, maintaining the temperature of soap solution B at 55-65° C. for standby use; S13, slowly adding mixture A to soap solution B at a uniform speed to obtain a uniform emulsion system, which is the regeneration agent.

[0043] Specifically, the protective agent includes the following raw materials in parts by weight: 80-100 parts of hard asphalt, 1-5 parts of nano-oxide, 0.1-0.3 parts of dispersant, 1-3 parts of emulsifier, and 100-200 parts of water.

[0044] The hard asphalt is No. 30 base asphalt, No. 50 base asphalt or a combination of the above two; the nano-scale oxide is selected from one or more of nano-scale titanium dioxide, nano-scale zinc oxide and nano-scale silicon dioxide; the dispersant is selected from one or more of sodium hexametaphosphate, sodium tripolyphosphate and potassium trimetaphosphate; the emulsifier is selected from one or two of Indulin AA57 and Indulin AA63D.

[0045] Accordingly, the present invention also provides a method for preparing a protective agent, comprising the following steps: S21, first heat the hard asphalt to 130-140° C., then add the nano oxide thereto, maintain the temperature, and stir thoroughly for 20-30 minutes to obtain a mixture C, then raise the temperature of the mixture C to 140-155° C. for standby use; S22, adding an emulsifier to water, adding a dispersant, and fully dissolving and mixing to obtain a soap solution D, maintaining the temperature of the soap solution D at 55-65° C. for standby use; S23, slowly adding the mixture C to the soap solution D at a uniform speed to obtain a uniform emulsion system, which is the protective agent.

[0046] The present application also provides a construction method of the above-mentioned infiltration regeneration fog seal agent, comprising the following steps: S31: Close traffic and clear the road; S32: Spray the regeneration agent and perform curing. When the dark red regeneration agent gradually fades and is absorbed by the road surface, curing can be stopped. Generally, it takes 1-4 hours. S33: Spray the protective agent and perform curing. When the sprayed black emulsion protective agent breaks and solidifies, the curing can be stopped, which usually takes 1-2 hours; S34: Spreading corundum; S35: Open to traffic.

[0047] The present application will be further described below with specific preparation examples and embodiments.

[0048] The following preparation examples and comparative examples are used to describe the preparation process of the regeneration agent and the protective agent.

[0049] Preparation Example 1: Preparation Example 1 provides a regeneration agent, the specific components and dosage of which are shown in Table 1, and the preparation method thereof is as follows: S11, firstly heat the regenerative oil to 100°C, then add the penetrant and the interface regulator thereto, maintain the temperature, and stir thoroughly for 30 minutes to obtain a mixture A, then raise the temperature of the mixture A to 150°C for standby use; S12, adding the emulsifier into water, fully dissolving and mixing to obtain soap solution B, maintaining the temperature of soap solution B at 60°C for standby use; S13, slowly adding mixture A into soap solution B at a uniform speed to obtain a uniform emulsion system, i.e., obtaining the regeneration agent.

[0050] Preparation Example 2-3: Preparation Example 2-3 is basically the same as Preparation Example 1, the only difference being the type and amount of each raw material component. For details, see Table 1.

[0051] Preparation of Comparative Example 1: Preparation of Comparative Example 1 is basically the same as Preparation Example 1, except that the raw materials of Preparation of Comparative Example 1 do not contain a penetrant.

[0052] Preparation of Comparative Example 2: Preparation of Comparative Example 2 is basically the same as Preparation Example 1, except that the raw materials of Preparation of Comparative Example 2 do not contain an interface regulator.

[0053] Table 1 Regeneration agent raw material composition and dosage of preparation examples 1-3 and preparation comparative examples 1-2 Preparation Example 4: Preparation Example 4 provides a protective agent, the specific components and dosage of which are shown in Table 2, and the preparation method thereof is as follows: S21, first heat the hard asphalt to 130° C., then add the nano oxide thereto, maintain the temperature, and stir thoroughly for 30 minutes to obtain a mixture C, then raise the temperature of the mixture C to 150° C. for standby use; S22, adding an emulsifier to water, adding a dispersant, and fully dissolving and mixing to obtain a soap solution D, and maintaining the temperature of the soap solution D at 60° C. for standby use; S23, slowly adding the mixture C to the soap solution D at a uniform speed to obtain a uniform emulsion system, which is the protective agent.

[0054] Preparation Example 5-6: Preparation Example 5-6 is basically the same as Preparation Example 4, the only difference is the type and amount of each raw material component. For details, please refer to Table 2.

[0055] Preparation of Comparative Example 3: Preparation of Comparative Example 3 is substantially the same as Preparation Example 4, except that the raw materials for Preparation of Comparative Example 3 do not contain a dispersant.

[0056] Since the protective agent in the comparative example 3 has poor stability, it agglomerates and precipitates in a short time after preparation, and normal construction cannot be carried out.

[0057] Preparation of Comparative Example 4: Preparation of Comparative Example 4 is basically the same as Preparation Example 4, with the only difference being that an equal amount of No. 70 base asphalt is used in place of No. 30 base asphalt in the raw materials of Preparation of Comparative Example 4.

[0058] Table 2 Raw material composition and dosage of protective agent in Preparation Examples 4-6 and Comparative Example 3 The following examples and comparative examples are used to describe the construction process of the regeneration agent and protective agent prepared by the preparation examples and the preparation comparative examples. All examples and comparative examples are constructed on different sections of the same road, which is an asphalt pavement with a road age of 12 years. The specific construction processes are as follows: Example 1: Example 1 provides a downward infiltration regeneration fog sealing agent, which is composed of the regeneration agent of Preparation Example 1 and the protective agent of Preparation Example 4. The downward infiltration regeneration fog sealing agent is constructed using the following construction method: S31: Close the traffic and clean up the dirt and debris on the road. The traffic closure shall be implemented in accordance with the "Standards for Traffic Organization of Urban Road Construction Operations" GA / T900-2010, "Highway Maintenance Safety Operation Regulations" (JTG-H30) and the regulations stipulated by the local transportation authorities; S32: Load the regeneration agent of Preparation Example 1 into the spreading vehicle, carry out the spreading operation according to the pre-calculated spreading amount, and then perform curing for 2.5 hours; S33: The protective agent of Preparation Example 4 is loaded into a spraying vehicle, and the spraying operation is carried out according to the pre-calculated spraying amount, and then curing is carried out, and the curing time is 1.8 hours; S34: Use a spreader to evenly spread corundum to the aforementioned construction area. The corundum is 80 mesh and the amount of corundum is 1.2kg / m 2 ; S35: Open to traffic.

[0059] Example 2: Example 2 is basically the same as Example 1, with the only difference being that the infiltration regeneration fog seal agent in Example 2 is composed of the regeneration agent of Preparation Example 2 and the protective agent of Preparation Example 5.

[0060] Example 3: Example 3 is basically the same as Example 1, with the only difference being that the infiltration regeneration fog seal agent in Example 3 is composed of the regeneration agent of Preparation Example 3 and the protective agent of Preparation Example 6.

[0061] Comparative Example 1: Comparative Example 1 is substantially the same as Example 1, except that the infiltration regeneration fog seal agent in Comparative Example 1 is composed of the regeneration agent prepared in Comparative Example 1 and the protective agent prepared in Example 4.

[0062] Comparative Example 2: Comparative Example 2 is basically the same as Example 1, except that the infiltration regeneration fog seal agent in Comparative Example 2 is composed of the regeneration agent prepared in Comparative Example 2 and the protective agent prepared in Example 4.

[0063] Comparative Example 3: Comparative Example 3 is basically the same as Example 1, except that the infiltration regeneration fog seal agent in Comparative Example 3 is composed of the regeneration agent of Preparation Example 1 and the protective agent of Preparation Example 4.

[0064] Performance Testing After the pavement was maintained for 3 months according to Example 1-3 and Comparative Example 1-3, core samples with a diameter of 100 mm were taken from the original pavement (unmaintained position), the example section and the comparative section, and the mixture with a thickness of 3 to 4 cm below the surface was cut and retained for later use.

[0065] 1. Remove the surface layer of the core samples cut from Example 1 and Comparative Example 1, and observe the cross-section of each core sample at a depth of 3 cm. Figure 1 The cross-sectional view of the core sample at a depth of 3 cm after the infiltration regeneration fog seal agent provided in Example 1 of the present application was applied for 3 months is shown. Figure 1 It can be seen that the core sample has good density at the cross section and obvious infiltration effect. Figure 2 The cross-sectional view of the core sample at a depth of 3 cm after the infiltration regeneration fog seal agent provided in Comparative Example 1 of the present application was applied for 3 months is shown. Figure 2 It can be seen that there are obvious gaps in the cross section of the core sample, indicating that the regenerated oil has not reached this depth and the infiltration effect is not obvious.

[0066] 2. Recycled asphalt was obtained from each core sample according to the method of JTG-E20 T0727. The penetration, softening point and ductility of the recycled asphalt were tested according to the methods of T0604, T0606 and T0605. The infiltration regeneration effect was evaluated based on the numerical differences between the embodiment and the comparative example and compared with the indicators of the original pavement section. The specific test results are shown in Table 3.

[0067] Since only the area 3-4 cm below the surface of the asphalt concrete is retained for evaluation and the surface layer of 1-2 cm is removed, the test method of the present application can more objectively reflect the deep penetration ability of the present invention; the signs of asphalt regeneration are the decrease in softening point and the increase in needle penetration and elongation, so by comparing the asphalt indicators before and after implementation, the regeneration ability of the present invention can be evaluated.

[0068] Table 3 Performance test results of Examples 1-3 and Comparative Examples 1-3 It can be seen from the results in Table 3 that, compared with the original pavement, the infiltration regeneration fog seal agent of Examples 1-3 of the present application can achieve deep infiltration and regenerate aged asphalt, with an effective depth of 1-4 cm.

[0069] In contrast, since the regeneration agent of Comparative Example 1 does not contain a penetrant, the regeneration agent cannot penetrate deeply and only stays on the surface of the asphalt pavement. Therefore, the asphalt in the deep layer is almost the same as the asphalt on the original pavement.

[0070] Since the regeneration agent of Comparative Example 2 does not contain an interface regulator, its infiltration regeneration effect is very limited compared with Example 1. Moreover, during the implementation process, it was found that the regeneration agent in Comparative Example 2 (i.e., Preparation Comparative Example 2) had poor stability and the emulsion had slight stratification, but it did not affect the construction.

[0071] Compared with Example 1, the infiltration regeneration capacity of Comparative Example 3 is relatively normal, but after spreading the protective agent of this comparative example, the curing time of the protective agent is significantly prolonged, increasing by about 1 hour, and the protective agent liquid is relatively easy to flow and be carried up by vehicles, polluting the road ancillary facilities.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A infiltration regeneration fog sealer for asphalt pavement, characterized in that: The invention comprises a regeneration agent, which comprises the following raw materials in parts by weight: 80-100 parts of regeneration oil, 1-3 parts of interface adjuster, 18-30 parts of penetrant, 1-3 parts of emulsifier and 100-200 parts of water, wherein the regeneration oil is biomass oil.

2. The infiltration regeneration fog seal agent for asphalt pavement according to claim 1, characterized in that: The regenerative oil is selected from one or more of palm oil, castor oil, rapeseed oil, soybean oil and turpentine oil.

3. The infiltration regeneration fog seal agent for asphalt pavement according to claim 1, characterized in that: The interface regulator is a general non-ionic polymer dispersant.

4. The infiltration regeneration fog seal agent for asphalt pavement according to claim 3, characterized in that: The penetrant is selected from one or more of octane, isopropanol and n-heptane.

5. The infiltration regeneration fog seal agent for asphalt pavement according to claim 1, characterized in that: The preparation method of the regeneration agent is as follows: S11, first heating the regenerative oil to 100-120° C., then adding the penetrant and the interface adjuster thereto, Maintain the temperature and stir thoroughly for 20-30 minutes to obtain a mixture A, and then raise the temperature of the mixture A to 145-155° C. for standby use; S12, adding an emulsifier into water, fully dissolving and mixing to obtain soap solution B, maintaining the temperature of soap solution B at 55-65° C. for standby use; S13, slowly adding the mixture A to the soap solution B at a uniform speed to obtain a uniform emulsion system, which is the regeneration agent.

6. The infiltration regeneration fog seal agent for asphalt pavement according to claim 1, characterized in that: The invention also comprises a protective agent, which comprises the following raw materials in parts by weight: 80-100 parts of hard asphalt, 1-5 parts of nano-oxide, 0.1-0.3 parts of dispersant, 1-3 parts of emulsifier and 100-200 parts of water.

7. The infiltration regeneration fog seal agent for asphalt pavement according to claim 6, characterized in that: The hard asphalt is No. 30 base asphalt and / or No. 50 base asphalt.

8. The infiltration regeneration fog seal agent for asphalt pavement according to claim 6, characterized in that: The nano-sized oxide is selected from one or more of nano-sized titanium dioxide, nano-sized zinc oxide and nano-sized silicon dioxide.

9. The infiltration regeneration fog seal agent for asphalt pavement according to claim 6, characterized in that: The preparation method of the protective agent comprises the following steps: S21, first heating the hard asphalt to 130-140° C., then adding the nano oxide thereto, Maintain the temperature and stir thoroughly for 20-30 minutes to obtain a mixture C, then raise the temperature of the mixture C to 140-155° C. for standby use; S22, adding an emulsifier to water, adding a dispersant, and fully dissolving and mixing to obtain a soap solution D, maintaining the temperature of the soap solution D at 55-65° C. for standby use; S23, slowly adding the mixture C to the soap solution D at a uniform speed to obtain a uniform emulsion system, which is the protective agent.

10. The construction method of the infiltration regeneration fog seal agent for asphalt pavement according to any one of claims 6 to 9, characterized in that: The steps include: S31: Close traffic and clear the road; S32: spraying regeneration agent and curing; S33: spraying protective agent and curing; S34: Spreading corundum; S35: Open to traffic.

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