A rapid road surface repairing material, a preparation method thereof and asphalt concrete

Abstract

The application discloses a kind of road surface rapid repair materials, its preparation method and asphalt concrete, belong to asphalt concrete technical field, it is characterized in that, according to weight fraction, it is as follows, including: self-made multifunctional emulsified asphalt 180-200 parts, polybutadiene latex 15-20 parts, polyvinyl acetate emulsion 10-15 parts, self-made silicon resin hydrogel 8-12 parts, basalt fiber 8-12 parts, dodecyl trimethoxysilane 0.5-0.9 parts, dodecanol ester 0.5-1.5 parts.The road surface rapid repair material of the application only needs to mix the material with aggregate at normal temperature, then fills the part of road surface to be repaired, can immediately open to traffic after being rolled by road roller, can be constructed in rainy day and humid road surface, can quickly repair road;The stability after opening to traffic is good, early damage does not occur, and has excellent high, low temperature, bonding and durability, has wide application prospect in asphalt concrete and road surface rapid repair.

Description

Technical Field

[0001] This invention belongs to the field of asphalt concrete technology, specifically relating to a rapid road repair material, its preparation method, and asphalt concrete. Background Technology

[0002] Highway construction, as a key part of my country's infrastructure development, holds significant strategic importance for national defense and the healthy development of the national economy, and has achieved rapid progress. By the end of 2022, my country's total highway mileage had increased year by year, reaching 5.35 million square kilometers, with expressways growing rapidly to 177,000 kilometers, firmly ranking first in the world.

[0003] With such a massive highway system, road maintenance and repair have become another major task following highway construction. Due to the viscoelasticity of asphalt materials, asphalt concrete softens under high temperatures and becomes brittle under low temperatures, causing the mechanical and road performance of asphalt concrete to deteriorate over time, resulting in defects such as loosening, rutting, and potholes in the asphalt pavement. If these defects are not repaired in time, they will not only seriously affect the driving experience of vehicles, but also greatly endanger personal and property safety, leading to frequent traffic accidents.

[0004] Therefore, given the increasing traffic pressure and more frequent road surface damage in modern society, it is crucial to repair roads in the shortest possible time and ensure normal vehicle passage. The repaired road surface should not only have sufficient load-bearing strength but also good smoothness and excellent durability to ensure vehicle safety on highways.

[0005] Currently, hot-mix asphalt concrete is mainly used for asphalt concrete pavement, which requires heating and mixing equipment and special transportation equipment. The repair interface must also be dried before construction.

[0006] For example, Chinese invention patent application number CN202110930006.9 discloses a structural layer and construction method for repairing deep rutting on asphalt pavement. The method is characterized by comprising an asphalt concrete layer and a wearing course laid sequentially from bottom to top. The asphalt concrete layer is a Sup-20 or Sup-25 asphalt concrete layer, prepared by mixing the following raw materials in parts by weight: 90-95 parts aggregate, 4-6 parts asphalt, and 1-4 parts special anti-rutting agent. The aggregate is basalt, the asphalt is 70# petroleum asphalt, and the special anti-rutting agent is a C40-C60 high-molecular-weight wax additive.

[0007] In the aforementioned prior art, although traffic can be opened after 3 hours of curing, the discharge temperature in construction step S2 of the repair process is 160 degrees Celsius, the initial pressing temperature is 150 degrees Celsius, the secondary pressing temperature is 130 degrees Celsius, and the final compaction temperature is 90 degrees Celsius.

[0008] Current technologies still suffer from drawbacks such as complex construction equipment, weak bonding between new and old interfaces, and poor durability. Therefore, there is an urgent need to introduce new technologies to address these issues and find more feasible solutions. Summary of the Invention

[0009] To address the deficiencies in the aforementioned technical solutions, the present invention aims to provide a rapid road repair material, its preparation method, and asphalt concrete. This objective can be achieved through the following technical solution: A rapid road repair material, by weight, comprises the following components: 180-200 parts of self-made multifunctional emulsified asphalt, 15-20 parts of polystyrene-butadiene latex, 10-15 parts of polyvinyl acetate emulsion, 8-12 parts of self-made silicone resin hydrogel, 8-12 parts of basalt fiber, 0.5-0.9 parts of dodecyltrimethoxysilane, and 0.5-1.5 parts of dodecyl alcohol ester.

[0010] The basalt fibers are 6 mm in length and 17 μm in diameter.

[0011] The method for preparing the self-made multifunctional emulsified asphalt is as follows: 70-85 parts by weight of 70# asphalt, 5-7 parts by weight of octadecyl dimethyl benzyl ammonium chloride, 2-4 parts by weight of monoglyceride, and 8-10 parts by weight of hexadecyl trimethyl ammonium chloride are added to an emulsification reactor; the material in the reactor is heated to melt, and high-speed stirring is started at 800-850 r / min. The temperature is raised to 110-125℃, and 12-15 parts by weight of triethanolamine are weighed and slowly added to the emulsification reactor. The mixture is stirred for 20-30 minutes. Then, using a peristaltic pump, 40-50 parts of hot water (around 80-85℃) are dripped into the reactor over a period of 60-75 minutes. After emulsification for another 30-40 minutes, 50-60 parts of hot water, 0.1-0.3 parts of cationic polyacrylamide with a molecular weight of 8 million, and 1-3 parts of calcium chloride are added. The mixture is stirred for 30-45 minutes, cooled to 55-60℃, and then discharged to obtain the self-made multifunctional emulsified asphalt.

[0012] The method for preparing the self-made silicone resin hydrogel is as follows: Add 80-95 parts by weight of tetraethoxysilane and 40-50 parts by weight of dimethyldiethoxysilane to a 500mL three-necked flask, turn on the stirrer, and maintain the water bath temperature at 25-35℃; add 0.3-0.5 parts by weight of 37% hydrochloric acid to 100-110 parts by weight of deionized water, stir evenly, and add the solution to the three-necked flask in three portions, with an interval of 30-35 minutes between each addition. After the addition is complete, continue the reaction for 75-90 minutes, and finally stop stirring to obtain the self-made silicone resin hydrogel.

[0013] A method for preparing a rapid road repair material: First, add self-made multifunctional emulsified asphalt to a 1L three-necked flask, turn on the electric mechanical stirrer, add polystyrene-butadiene latex, stir for 20-30 minutes, add polyvinyl acetate emulsion, and stir for 25-35 minutes; weigh basalt fiber and dodecyltrimethoxysilane into a beaker, mix the two evenly with a glass rod, then divide them equally and add them to the three-necked flask in two batches with a 30-minute interval between them; finally, add self-made silicone resin hydrogel and dodecyl alcohol ester, and stir for 40-50 minutes to prepare the rapid road repair material.

[0014] The beneficial effects of this invention are as follows: (1) The present invention introduces cationic composite emulsifier and cationic polyacrylamide into self-made multifunctional emulsified asphalt. These cationic components can effectively isolate asphalt molecules and enhance the stability of emulsified asphalt. On the other hand, since the aggregates in asphalt concrete are mostly negatively charged, the cationic components can achieve rapid demulsification and rapid coagulation of emulsified asphalt through the interaction of positive and negative charges, thereby enhancing the adhesion between asphalt and aggregates. (2) By introducing a self-made silicone resin hydrogel, the silicon atoms on the silicon-oxygen main chain contain more hydrophobic groups such as methyl and ethoxy groups, which can improve the overall hydrophobicity of the material, that is, produce a similar hydrophobic lotus leaf effect, which causes water droplets to slide off the surface and reduces the risk of road materials being damaged by water. In addition, the self-made silicone resin hydrogel has good high and low temperature performance and good UV resistance. It can improve the high and low temperature performance and aging resistance of asphalt materials by coating emulsified asphalt molecules. (3) The road surface rapid repair material of the present invention contains basalt fiber, which has a large aspect ratio and high longitudinal tensile strength. When incorporated into asphalt concrete, it can improve the concrete’s resistance to rutting, weathering resistance and crack resistance. (4) The road surface rapid repair material of the present invention contains polyvinyl acetate emulsion, wherein the polyvinyl acetate molecules have highly active acetate groups and vinyl groups, which can quickly bond new and old concrete of asphalt pavement, have high strength and good weather resistance. (5) In the polystyrene-butadiene emulsion of the present invention, the styrene hard segments and butadiene soft segments are arranged alternately, and the unsaturated bonds therein can react with the fluid-containing substances in the asphalt to form a three-dimensional cross-linked structure, thereby realizing the performance of rubber elastomer and improving the adhesion performance of the material. (6) The road surface rapid repair material of the present invention only requires mixing the material with aggregate at room temperature and then filling it into the part of the road surface that needs to be repaired. It does not pollute the environment, does not require special machinery, and can be opened to traffic immediately after being compacted by a road roller. It can be constructed in rainy weather and wet road surfaces, and can quickly repair roads. It has good stability after being opened to traffic and will not suffer early damage. It also has excellent high and low temperature, adhesion and durability properties, and has broad application prospects in asphalt concrete and rapid road surface repair. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. The illustrative embodiments and descriptions of this invention are for explanation only and are not intended to limit the invention. Furthermore, regarding numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Any stated value or intermediate value within a stated range, as well as each smaller range between any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0016] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods and materials have been described herein, any methods and materials similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe methods and / or materials associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.

[0017] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be apparent to those skilled in the art. This specification and embodiments are merely exemplary.

[0018] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0019] In the following examples, "parts" refers to parts by weight.

[0020] Example 1 A road surface rapid repair material, by weight, comprises the following components: 180 parts of self-made multifunctional emulsified asphalt, 15 parts of polystyrene-butadiene latex, 10 parts of polyvinyl acetate emulsion, 8 parts of self-made silicone resin hydrogel, 8 parts of basalt fiber, 0.5 parts of dodecyltrimethoxysilane, and 0.5 parts of dodecyl alcohol ester.

[0021] The basalt fibers are 6 mm in length and 17 μm in diameter. The polyvinyl acetate emulsion is commercially available and was purchased from Shandong Duoju Chemical Co., Ltd. in this embodiment.

[0022] The method for preparing the self-made multifunctional emulsified asphalt is as follows: Take 70 parts by weight of 70# asphalt, 5 parts by weight of octadecyl dimethyl benzyl ammonium chloride, 2 parts by weight of monoglyceride, and 8 parts by weight of hexadecyl trimethyl ammonium chloride and add them to an emulsification reactor. Heat the materials in the reactor until they melt, start high-speed stirring at 800 r / min, and heat to 110℃. Weigh 12 parts by weight of triethanolamine and slowly add it to the emulsification reactor, stirring for 20 minutes. Then, using a peristaltic pump, drip 40 parts by weight of hot water (around 80℃) into the reactor over 60 minutes. Continue emulsifying for another 30 minutes, then add 50 parts by weight of hot water, 0.1 parts by weight of cationic polyacrylamide with a molecular weight of 8 million, and 1 part by weight of calcium chloride. Stir for 30 minutes, cool to 55℃, and then discharge the material to obtain the self-made multifunctional emulsified asphalt.

[0023] The method for preparing the self-made silicone resin hydrogel is as follows: 80 parts by weight of tetraethoxysilane and 40 parts by weight of dimethyldiethoxysilane are added to a 500mL three-necked flask. The stirrer is turned on and the water bath temperature is controlled at 25℃. 0.3 parts by weight of 37% hydrochloric acid are added to 100 parts by weight of deionized water and stirred evenly. The mixture is added to the three-necked flask in three portions, with an interval of 30 minutes between each addition. After the addition is complete, the reaction continues for 75 minutes. Finally, stirring is stopped to obtain the self-made silicone resin hydrogel.

[0024] A method for preparing a rapid road repair material: First, add self-made multifunctional emulsified asphalt to a 1L three-necked flask, turn on the electric mechanical stirrer, add polystyrene-butadiene latex, stir for 20-30 minutes, add polyvinyl acetate emulsion, and stir for 25-35 minutes; weigh basalt fiber and dodecyltrimethoxysilane into a beaker, mix the two evenly with a glass rod, then divide them equally and add them to the three-necked flask in two batches with a 30-minute interval between them; finally, add self-made silicone resin hydrogel and dodecyl alcohol ester, and stir for 40-50 minutes to prepare the rapid road repair material.

[0025] Example 2 A road surface rapid repair material, by weight, comprises the following components: 190 parts of self-made multifunctional emulsified asphalt, 18 parts of polystyrene-butadiene latex, 13 parts of polyvinyl acetate emulsion, 10 parts of self-made silicone resin hydrogel, 10 parts of basalt fiber, 0.7 parts of dodecyltrimethoxysilane, and 1 part of dodecyl alcohol ester.

[0026] The basalt fibers are 6 mm in length and 17 μm in diameter. The polyvinyl acetate emulsion is commercially available and was purchased from Shandong Duoju Chemical Co., Ltd. in this embodiment. The method for preparing the self-made multifunctional emulsified asphalt is as follows: 75 parts by weight of 70# asphalt, 6 parts by weight of octadecyl dimethyl benzyl ammonium chloride, 3 parts by weight of monoglyceride, and 9 parts by weight of hexadecyl trimethyl ammonium chloride are added to an emulsification reactor. The material in the reactor is heated to melt, and high-speed stirring is started at 820 r / min. The temperature is raised to 115℃, and 13 parts by weight of triethanolamine are slowly added to the emulsification reactor. The mixture is stirred for 25 minutes. Then, using a peristaltic pump, 45 parts by weight of hot water (around 82℃) are dripped into the reactor over 70 minutes. After emulsification continues for 35 minutes, 55 parts by weight of hot water, 0.2 parts by weight of cationic polyacrylamide with a molecular weight of 8 million, and 2 parts by weight of calcium chloride are added. The mixture is stirred for 35 minutes, cooled to 57℃, and then discharged to obtain the self-made multifunctional emulsified asphalt.

[0027] The method for preparing the self-made silicone resin hydrogel is as follows: Add 85 parts by weight of tetraethoxysilane and 45 parts by weight of dimethyldiethoxysilane to a 500 mL three-necked flask. Turn on the stirrer and maintain the water bath temperature at 28°C. Add 0.4 parts by weight of 37% hydrochloric acid to 105 parts by weight of deionized water, stir well, and add the solution in three portions to the three-necked flask at 32-minute intervals. After each addition, continue the reaction for 80 minutes, and finally stop stirring to obtain the self-made silicone resin hydrogel.

[0028] In Example 2, the preparation method of the rapid road repair material is the same as that in Example 1.

[0029] Example 3 A road surface rapid repair material, by weight, comprises the following components: 200 parts of self-made multifunctional emulsified asphalt, 20 parts of polystyrene-butadiene latex, 15 parts of polyvinyl acetate emulsion, 12 parts of self-made silicone resin hydrogel, 12 parts of basalt fiber, 0.9 parts of dodecyltrimethoxysilane, and 1.5 parts of dodecyl alcohol ester.

[0030] The basalt fibers are 6 mm in length and 17 μm in diameter. The polyvinyl acetate emulsion is commercially available and was purchased from Shandong Duoju Chemical Co., Ltd. in this embodiment. The method for preparing the self-made multifunctional emulsified asphalt is as follows: 85 parts by weight of 70# asphalt, 7 parts by weight of octadecyl dimethyl benzyl ammonium chloride, 4 parts by weight of monoglyceride, and 10 parts by weight of hexadecyl trimethyl ammonium chloride are added to an emulsification reactor. The material in the reactor is heated to melt, and high-speed stirring is started at 840 r / min. The temperature is raised to 125°C, and 15 parts by weight of triethanolamine are slowly added to the emulsification reactor. The mixture is stirred for 30 minutes. Then, using a peristaltic pump, 50 parts by weight of hot water (around 85°C) are dripped into the reactor over 75 minutes. After emulsification continues for 40 minutes, 60 parts by weight of hot water, 0.3 parts by weight of cationic polyacrylamide with a molecular weight of 8 million, and 3 parts by weight of calcium chloride are added. The mixture is stirred for 45 minutes, cooled to 60°C, and then discharged to obtain the self-made multifunctional emulsified asphalt.

[0031] The method for preparing the self-made silicone resin hydrogel is as follows: Add 95 parts by weight of tetraethoxysilane and 50 parts by weight of dimethyldiethoxysilane to a 500 mL three-necked flask. Turn on the stirrer and maintain the water bath temperature at 35°C. Add 0.5 parts by weight of 37% hydrochloric acid to 110 parts by weight of deionized water, stir well, and add the solution in three portions to the three-necked flask at 35-minute intervals. After each addition, continue the reaction for 90 minutes, and finally stop stirring to obtain the self-made silicone resin hydrogel.

[0032] In Example 3, the preparation method of the rapid road repair material is the same as that in Example 1.

[0033] Example 4 A road surface rapid repair material, by weight, comprises the following components: 200 parts of self-made multifunctional emulsified asphalt, 18 parts of polystyrene-butadiene latex, 14 parts of polyvinyl acetate emulsion, 8 parts of self-made silicone resin hydrogel, 10 parts of basalt fiber, 0.9 parts of dodecyltrimethoxysilane, and 1.3 parts of dodecyl alcohol ester.

[0034] The basalt fibers are 6 mm in length and 17 μm in diameter. The polyvinyl acetate emulsion is commercially available and was purchased from Shandong Duoju Chemical Co., Ltd. in this embodiment. The method for preparing the self-made multifunctional emulsified asphalt is as follows: 72 parts by weight of 70# asphalt, 5 parts by weight of octadecyl dimethyl benzyl ammonium chloride, 4 parts by weight of monoglyceride, and 9 parts by weight of hexadecyl trimethyl ammonium chloride are added to an emulsification reactor. The material in the reactor is heated to melt, and high-speed stirring is started at 850 r / min. The temperature is raised to 120°C, and 15 parts by weight of triethanolamine are slowly added to the emulsification reactor. The mixture is stirred for 20 minutes. Subsequently, 45 parts by weight of hot water (around 85°C) are dripped into the reactor using a peristaltic pump over a period of 65 minutes. After emulsification continues for 30 minutes, 60 parts by weight of hot water, 0.3 parts by weight of cationic polyacrylamide with a molecular weight of 8 million, and 3 parts by weight of calcium chloride are added. The mixture is stirred for 30 minutes, cooled to 60°C, and then discharged to obtain the self-made multifunctional emulsified asphalt.

[0035] The method for preparing the self-made silicone resin hydrogel is as follows: Add 95 parts by weight of tetraethoxysilane and 40 parts by weight of dimethyldiethoxysilane to a 500 mL three-necked flask. Turn on the stirrer and maintain the water bath temperature at 30°C. Add 0.4 parts by weight of 37% hydrochloric acid to 100 parts by weight of deionized water, stir well, and add the solution in three portions to the three-necked flask at 35-minute intervals. After each addition, continue the reaction for 80 minutes, and finally stop stirring to obtain the self-made silicone resin hydrogel.

[0036] In Example 4, the preparation method of the rapid road repair material is the same as that in Example 1.

[0037] Comparative Example 1 A road surface rapid repair material, by weight, comprises the following components: 200 parts of self-made multifunctional emulsified asphalt, 18 parts of polystyrene-butadiene latex, 14 parts of polyvinyl acetate emulsion, 10 parts of basalt fiber, 0.9 parts of dodecyltrimethoxysilane, and 1.3 parts of dodecyl alcohol ester.

[0038] The basalt fibers are 6 mm in length and 17 μm in diameter. The polyvinyl acetate emulsion is commercially available and was purchased from Shandong Duoju Chemical Co., Ltd. in this embodiment. A method for preparing a rapid road repair material: First, add self-made functional emulsified asphalt to a 1L three-necked flask, turn on the electric mechanical stirrer, add polystyrene-butadiene latex, stir for 20-30 minutes, add polyvinyl acetate emulsion, and stir for 25-35 minutes; weigh basalt fiber and dodecyltrimethoxysilane into a beaker, mix the two evenly with a glass rod, then divide them equally and add them to the three-necked flask in two batches with a 30-minute interval between them; finally, add dodecyl alcohol ester, and stir for 40-50 minutes to prepare the rapid road repair material.

[0039] Comparative Example 1 is based on Example 4, except that the addition of the self-made silicone hydrogel was omitted.

[0040] Comparative Example 2 A road surface rapid repair material, by weight, comprises the following components: 200 parts of self-made multifunctional emulsified asphalt, 18 parts of polystyrene-butadiene latex, 14 parts of polyvinyl acetate emulsion, 10 parts of basalt fiber, 0.9 parts of dodecyltrimethoxysilane, 1.3 parts of dodecyl alcohol ester, and 8 parts of 30% sodium methylsilicate solution. The basalt fibers are 6 mm in length and 17 μm in diameter. The polyvinyl acetate emulsion is commercially available and was purchased from Shandong Duoju Chemical Co., Ltd. in this embodiment. A method for preparing a rapid road repair material: First, add self-made multifunctional emulsified asphalt to a 1L three-necked flask, turn on the electric mechanical stirrer, add polystyrene-butadiene latex, stir for 20-30 minutes, add polyvinyl acetate emulsion, and stir for 25-35 minutes; weigh basalt fiber and dodecyltrimethoxysilane into a beaker, mix the two evenly with a glass rod, then divide them equally and add them to the three-necked flask in two batches with a 30-minute interval between them; finally, add 30% sodium methylsilicate solution and dodecyl alcohol ester, and stir for 40-50 minutes to prepare the rapid road repair material.

[0041] Comparative Example 2 is based on Example 4, except that the self-made silicone hydrogel is replaced with an equal amount of 30% sodium methylsilicate solution.

[0042] Comparative Example 3 The road surface rapid repair material used in Comparative Example 3 is a commercially available cold patch material, specifically brand YM-002.

[0043] Test case The penetration, ductility and softening point at 25℃ were tested according to JTG E20-2011 "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering". The test results are shown in Table 1.

[0044] Table 1 Performance Analysis: As shown in Table 1, the penetration and ductility of Examples 1-4 at 25℃ are significantly better than those of the commercially available Comparative Example 3, especially in ductility. The ductility of the Examples 1-4 is 2.4-3.2 times higher than that of Comparative Example 3, indicating that the road repair materials prepared in Examples 1-4 have good resistance to low-temperature cracking. Furthermore, the lowest softening point in Examples 1-4 is 93℃, which is 12℃ higher than that of Comparative Example 3, indicating that the road repair materials prepared in Examples 1-4 also have good high-temperature performance.

[0045] Furthermore, Examples 1-4 and Comparative Examples 1-3 were used for asphalt concrete mixing, and the asphalt concrete mix proportions are shown in Table 2: Table 2 The concrete obtained from the mixing of Examples 1-4 and Comparative Examples 1-3 was tested for performance characteristics such as demulsification time, Marshall stability, rutting stability at 70℃, water permeability coefficient, freeze-thaw tensile strength ratio, and 3-hour molding strength value in accordance with JTG E20-2011 "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering". The performance test results are shown in Table 3. Table 3 Comprehensive performance analysis: When the products of Examples 1-4 of this invention are incorporated into aggregates, their rutting stability, Marshall stability, freeze-thaw tensile strength, and water permeability are all excellent. The demulsification time is about 30 minutes, and the molding strength can reach more than 5.4KN after 3 hours. Therefore, they can be used as a rapid road repair material.

[0046] Comparative Example 1 omitted the addition of homemade silicone hydrogel, while Comparative Example 2 replaced the homemade silicone hydrogel with an equal amount of 30% sodium methylsilicate solution.

[0047] The performance of the two comparative examples mentioned above is significantly different from that of Examples 1-4 of this application. The possible reason is that this application introduces a self-made silicone resin hydrogel, whose silicon atoms on the silicon-oxygen backbone contain more hydrophobic groups such as methyl and ethoxy groups, which can improve the overall hydrophobicity of the material, i.e., produce a similar hydrophobic lotus leaf effect, causing water droplets to slide off the surface and reducing the risk of water damage to the road surface material; and it works synergistically with the self-made multifunctional emulsified asphalt of this application. The self-made silicone resin hydrogel has good high and low temperature performance and good UV resistance, and can improve the high and low temperature performance and aging resistance of the asphalt material by coating the emulsified asphalt molecules.

[0048] Commercially available cold patching materials are inferior to those in Examples 1-4 of this application in all aspects. The possible reason is that this application introduces cationic composite emulsifiers and cationic polyacrylamide into the self-made multifunctional emulsified asphalt. These cationic components can effectively isolate asphalt molecules and enhance the stability of emulsified asphalt. On the other hand, since the aggregates in asphalt concrete are mostly negatively charged, the cationic components can achieve rapid demulsification and rapid coagulation of emulsified asphalt through the interaction of positive and negative charges, thereby enhancing the adhesion between asphalt and aggregates.

[0049] The above test data shows that the road surface rapid repair material of the present invention only requires mixing the material with aggregate at room temperature and then filling it into the part of the road surface that needs to be repaired. It is environmentally friendly, requires no special machinery, and can be opened to traffic immediately after being compacted by a road roller. It can be applied in rainy weather and on wet roads, and can quickly repair roads. After being opened to traffic, it has good stability and will not experience early damage. It also has excellent high and low temperature resistance, adhesion and durability properties, and has broad application prospects in asphalt concrete and rapid road surface repair.

[0050] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rapid road surface repair material, characterized in that, By weight, it comprises the following: The ingredients are: 180-200 parts of self-made multifunctional emulsified asphalt, 15-20 parts of polystyrene-butadiene latex, 10-15 parts of polyvinyl acetate emulsion, 8-12 parts of self-made silicone resin hydrogel, 8-12 parts of basalt fiber, 0.5-0.9 parts of dodecyltrimethoxysilane, and 0.5-1.5 parts of dodecyl alcohol ester. The preparation method of the self-made multifunctional emulsified asphalt is as follows: Take 70-85 parts of 70# asphalt, 5-7 parts of octadecyl dimethyl benzyl ammonium chloride, 2-4 parts of monoglyceride, and 8-10 parts of hexadecyl trimethyl ammonium chloride and put them into an emulsification reactor; heat the material in the reactor to melt, start high-speed stirring at 800-850 r / min, heat to 110-125℃, weigh 12-15 parts of triethanolamine, and slowly add it into the emulsification reactor. Stir for 20-30 minutes; then, using a peristaltic pump, drip 40-50 parts of hot water at 80-85℃ into the reaction vessel over 60-75 minutes. Continue emulsifying for 30-40 minutes, then add 50-60 parts of hot water, 0.1-0.3 parts of cationic polyacrylamide with a molecular weight of 8 million, and 1-3 parts of calcium chloride. Stir for 30-45 minutes, cool to 55-60℃, and then discharge to obtain the self-made multifunctional emulsified asphalt. The method for preparing the self-made silicone resin hydrogel is as follows: 80-95 parts by weight of tetraethoxysilane and 40-50 parts by weight of dimethyldiethoxysilane are added to a reaction vessel. The stirrer is turned on, and the water bath temperature is controlled at 25-35℃. 0.3-0.5 parts by weight of 37% hydrochloric acid are added to 100-110 parts by weight of deionized water and stirred evenly. The solution is added to a three-necked flask in three portions, with an interval of 30-35 minutes between each addition. After the addition is complete, the reaction continues for 75-90 minutes. Finally, stirring is stopped, and the self-made silicone resin hydrogel is obtained.

2. The road surface rapid repair material according to claim 1, characterized in that, By weight, its composition is as follows, including the following components: 190 parts of self-made multifunctional emulsified asphalt, 18 parts of polystyrene-butadiene latex, 13 parts of polyvinyl acetate emulsion, 10 parts of self-made silicone resin hydrogel, 10 parts of basalt fiber, 0.7 parts of dodecyltrimethoxysilane, and 1 part of dodecyl alcohol ester.

3. The road surface rapid repair material according to claim 1, characterized in that, The basalt fibers are 6 mm in length and 17 μm in diameter.

4. The road surface rapid repair material according to claim 1, characterized in that, By weight, its composition is as follows, including the following components: 200 parts of self-made multifunctional emulsified asphalt, 20 parts of polystyrene-butadiene latex, 15 parts of polyvinyl acetate emulsion, 12 parts of self-made silicone resin hydrogel, 12 parts of basalt fiber, 0.9 parts of dodecyltrimethoxysilane, and 1.5 parts of dodecyl alcohol ester.

5. The road surface rapid repair material according to claim 1, characterized in that, By weight, its composition is as follows, including the following components: 200 parts of self-made multifunctional emulsified asphalt, 18 parts of polystyrene-butadiene latex, 14 parts of polyvinyl acetate emulsion, 8 parts of self-made silicone resin hydrogel, 10 parts of basalt fiber, 0.9 parts of dodecyltrimethoxysilane, and 1.3 parts of dodecyl alcohol ester.

6. The road surface rapid repair material according to claim 1, characterized in that, By weight, its composition is as follows, including the following components: 180 parts of self-made multifunctional emulsified asphalt, 15 parts of polystyrene-butadiene latex, 10 parts of polyvinyl acetate emulsion, 8 parts of self-made silicone resin hydrogel, 8 parts of basalt fiber, 0.5 parts of dodecyltrimethoxysilane, and 0.5 parts of dodecyl alcohol ester.

7. A method for preparing a rapid road repair material according to any one of claims 1-6, characterized in that, The preparation method of the rapid road repair material is as follows: In a reaction vessel, first add self-made multifunctional emulsified asphalt, turn on the electric mechanical stirrer, add polystyrene-butadiene latex, stir for 20-30 minutes, add polyvinyl acetate emulsion, and stir for 25-35 minutes; weigh basalt fiber and dodecyltrimethoxysilane into a beaker, mix the two evenly with a glass rod, then divide them evenly and add them to a three-necked flask in two batches with an interval of 30 minutes in between; finally add self-made silicone resin hydrogel and dodecyl alcohol ester, and stir for 40-50 minutes to obtain the rapid road repair material.

8. An asphalt concrete, characterized in that, Its raw materials include the road surface rapid repair material as described in any one of claims 1-6.

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