Rapid pavement repairing material, preparation method thereof and asphalt concrete

Abstract

The invention discloses a rapid pavement repairing material, a preparation method of the rapid pavement repairing material and asphalt concrete, and belongs to the technical field of asphalt concrete. Comprising the following components in parts by weight: 180 to 200 parts of self-made multifunctional emulsified asphalt, 15 to 20 parts of styrene-butadiene latex, 10 to 15 parts of polyvinyl acetate emulsion, 8 to 12 parts of self-made silicon resin hydrogel, 8 to 12 parts of basalt fiber, 0.5 to 0.9 part of dodecyl trimethoxy silane and 0.5 to 1.5 parts of dodecanol ester. According to the rapid pavement repairing material, the material and aggregate are mixed at normal temperature, and then the mixture is filled into the to-be-repaired part of the pavement, so that the rapid pavement repairing material has no pollution to the environment, does not need special machinery, can be immediately opened to traffic after being rolled by a road roller, can be constructed on rainy days and wet pavements, and can be used for rapidly repairing the pavement; the high-temperature-resistant and high-temperature-resistant asphalt mixture has the advantages of high strength, high strength, high viscosity, good stability after traffic, no early damage, excellent high and low temperature resistance, excellent bonding performance and excellent durability, and has a wide application prospect in rapid repair of asphalt concrete and pavements.

Description

Technical Field

[0001] The present invention belongs to the technical field of asphalt concrete, and specifically relates to a rapid road repair material, a preparation method thereof and asphalt concrete. Background Art

[0002] As a part of my country's infrastructure construction, highway transportation construction has important strategic significance for national defense security and the healthy development of the national economy, and has achieved rapid development. By the end of 2022, my country's total highway mileage has increased year by year, reaching 5.35 million square kilometers, among which expressways have grown rapidly, reaching 177,000 kilometers, ranking first in the world.

[0003] With such a huge highway system, road maintenance and repair has become another major task after highway construction. Due to the viscoelasticity of the asphalt material itself, asphalt concrete softens under high temperature conditions and easily breaks under low temperature conditions, causing the mechanical properties and road performance of asphalt concrete to deteriorate over time, resulting in loose asphalt pavement, rutting, potholes and other defects. If these defects are not repaired in time, it 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, in view of the increasing traffic pressure in modern society and the increasingly frequent damage of various road surfaces, it is particularly important to repair the road surface in the shortest time and ensure the normal passage of vehicles. The repaired road surface should not only have sufficient bearing strength, but also have good flatness and excellent durability, so as to ensure the safety of vehicles on the road.

[0005] At present, asphalt concrete pavement mainly adopts hot mix asphalt concrete, which requires heating mixing equipment and special transportation equipment. The repair interface must also be dried before construction.

[0006] For example, the Chinese invention patent with application number: CN202110930006.9 discloses a structural layer and construction method for repairing deep rutting on asphalt pavement, characterized in that it includes an asphalt concrete layer and a wear layer laid sequentially from bottom to top, and the asphalt concrete layer is a Sup-20 or Sup-25 asphalt concrete layer, which is mixed and prepared by the following raw materials in parts by weight: 90~95 parts of stone, 4~6 parts of asphalt, and 1~4 parts of special anti-rutting agent, the stone is basalt stone, the asphalt is 70# petroleum asphalt, and the special anti-rutting agent is a C40-C60 polymer wax additive.

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

[0008] At present, the existing technology still has the defects of complex construction equipment, weak bonding between the new and old interfaces, and poor durability. Therefore, it is urgent to introduce new process technologies to solve the above problems and seek more feasible solutions. Summary of the invention

[0009] In order to solve the defects existing in the above technical scheme, the purpose of the present invention is to provide a road surface rapid repair material, a preparation method thereof and asphalt concrete; the purpose of the present invention can be achieved by the following technical scheme: a road surface rapid repair material, calculated by weight, its composition is as follows: 180-200 parts of homemade multifunctional emulsified asphalt, 15-20 parts of polystyrene butadiene latex, 10-15 parts of polyvinyl acetate emulsion, 8-12 parts of homemade silicone resin hydrogel, 8-12 parts of basalt fiber, 0.5-0.9 parts of dodecyltrimethoxysilane, and 0.5-1.5 parts of dodecyl ester.

[0010] The basalt fiber has a length of 6 mm and a diameter of 17 um.

[0011] The preparation and synthesis method of the self-made multifunctional emulsified asphalt is as follows: by weight, 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 are put into an emulsification reaction kettle; the temperature is raised to melt the materials in the kettle, high-speed stirring is started, the stirring speed is 800-850r / min, the temperature is raised to 110-125°C, 12-15 parts of triethanolamine are weighed, and the mixture is slowly added into the emulsification reaction kettle, and stirred for 20-30 minutes. Subsequently, a peristaltic pump is used to drip 40-50 parts of hot water (water temperature is about 80-85°C) into the reactor for 60-75 minutes. After continuing emulsification for 30-40 minutes, 50-60 parts of hot water are added, 0.1-0.3 parts of cationic polyacrylamide with a molecular weight of 8 million are added, and 1-3 parts of calcium chloride are added. After stirring for 30-45 minutes, the mixture is cooled to 55-60°C and discharged to obtain the homemade multifunctional emulsified asphalt.

[0012] The preparation and synthesis method of the homemade silicone resin hydrogel comprises the following steps: adding 80-95 parts of tetraethoxysilane and 40-50 parts of dimethyldiethoxysilane by weight into a 500 mL three-necked flask, turning on a stirrer, and controlling the temperature of a water bath at 25-35° C.; adding 0.3-0.5 parts of 37% hydrochloric acid into 100-110 parts of deionized water, stirring evenly, and adding the mixture into the three-necked flask three times, each time with an interval of 30-35 minutes, and after the addition is completed, continuing the reaction for 75-90 minutes, and finally stopping the stirring, thereby preparing the homemade silicone resin hydrogel.

[0013] A method for preparing a rapid road repair material: first, add a self-made multifunctional emulsified asphalt into a 1L three-necked flask, start an 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 into the three-necked flask twice with an interval of 30 minutes in between, finally add a self-made silicone resin hydrogel and dodecyl ester, stir for 40-50 minutes, and thus the rapid road repair material is prepared.

[0014] The present invention has the beneficial effects: (1) The present invention introduces a cationic composite emulsifier and a cationic polyacrylamide into the self-made multifunctional emulsified asphalt. These cationic components can, on the one hand, effectively isolate the asphalt molecules and enhance the stability of the emulsified asphalt. On the other hand, the aggregates in the asphalt concrete are mostly negatively charged. The cationic components can achieve the effect of rapid demulsification and rapid coagulation of the emulsified asphalt through the interaction between positive and negative charges, thereby enhancing the bonding effect between the asphalt and the aggregates. (2) The present invention introduces a self-made silicone hydrogel, whose silicon atoms on the silicon-oxygen main chain contain a large number of 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 water damage to the pavement material. In addition, the self-made silicone hydrogel has good high and low temperature performance and good UV resistance. It can improve the high and low temperature and aging resistance of the asphalt material by coating the emulsified asphalt molecules; (3) The rapid road repair material of the present invention contains basalt fiber, which has a large aspect ratio and high longitudinal tensile strength. When added to asphalt concrete, it can improve the concrete's rutting resistance, weather resistance, and crack resistance; (4) The rapid road repair material of the present invention contains polyvinyl acetate emulsion, in which the polyvinyl acetate molecules have highly active acetate groups and vinyl groups, which can quickly bond new and old concrete on asphalt pavement, have high strength and good weather resistance; (5) The polystyrene butadiene emulsion in the product of the present invention has styrene hard segments and butadiene soft segments 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 achieving the performance of a rubber elastomer and improving the bonding performance of the material; (6) The rapid road repair material of the present invention only needs to be mixed with aggregate at room temperature and then filled into the part of the road that needs to be repaired. It is environmentally friendly and does not require special machinery. It can be immediately opened to traffic after being rolled by a roller. It can be constructed on rainy days and wet roads and can quickly repair roads. It has good stability after opening to traffic and will not suffer from early damage. It also has excellent high and low temperature, adhesion and durability properties. It has broad application prospects in asphalt concrete and rapid road repair. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with embodiment, and the illustrative embodiments of the present invention and its description are only used to explain the present invention, and are not used as limitation of the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper limit and the lower limit of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the range is also included in the present invention. The upper limit and lower limit of these smaller ranges can be independently included or excluded in the scope.

[0016] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0017] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to the skilled artisan. The present invention description and examples are exemplary only.

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

[0019] The "parts" indicated in the following examples are all parts by weight.

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

[0021] The basalt fiber has a length of 6 mm and a diameter of 17 um; The polyvinyl acetate emulsion is commercially available, and in this embodiment, purchased from Shandong Poly Chemical Co., Ltd.

[0022] The preparation and synthesis method of the self-made multifunctional emulsified asphalt is as follows: by weight, 70 parts of 70# asphalt, 5 parts of octadecyl dimethyl benzyl ammonium chloride, 2 parts of monoglyceride, and 8 parts of hexadecyl trimethyl ammonium chloride are put into an emulsification reactor; the temperature is raised to melt the material in the reactor, high-speed stirring is turned on, the stirring speed is 800r / min, the temperature is raised to 110°C, 12 parts of triethanolamine are weighed, and slowly added to the emulsification reactor, and stirred for 20 minutes. Subsequently, a peristaltic pump is used to drip 40 parts of hot water (water temperature is about 80°C) into the reactor, the dripping time is 60 minutes, and after continuing emulsification for 30 minutes, 50 parts of hot water are added, 0.1 parts of cationic polyacrylamide with a molecular weight of 8 million are added, 1 part of calcium chloride is added, and stirred for 30 minutes. After cooling to 55°C, the material is discharged, and the self-made multifunctional emulsified asphalt is prepared.

[0023] The preparation and synthesis method of the homemade silicone resin hydrogel comprises the following steps: adding 80 parts of tetraethoxysilane and 40 parts of dimethyldiethoxysilane by weight into a 500 mL three-necked flask, turning on a stirrer, and controlling the temperature of the water bath at 25° C.; adding 0.3 parts of 37% hydrochloric acid into 100 parts of deionized water, stirring evenly, and adding the mixture into the three-necked flask three times, each time with an interval of 30 minutes. After the addition is completed, the reaction is continued for 75 minutes, and finally the stirring is stopped, so that the homemade silicone resin hydrogel is prepared.

[0024] A method for preparing a rapid road repair material: first, add a self-made multifunctional emulsified asphalt into a 1L three-necked flask, start an 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 into the three-necked flask twice with an interval of 30 minutes in between, finally add a self-made silicone resin hydrogel and dodecyl ester, stir for 40-50 minutes, and thus the rapid road repair material is prepared.

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

[0026] The basalt fiber has a length of 6 mm and a diameter of 17 um; The polyvinyl acetate emulsion is commercially available, and in this embodiment, purchased from Shandong Poly Chemical Co., Ltd.; The preparation and synthesis method of the self-made multifunctional emulsified asphalt is as follows: by weight, 75 parts of 70# asphalt, 6 parts of octadecyl dimethyl benzyl ammonium chloride, 3 parts of monoglyceride, and 9 parts of hexadecyl trimethyl ammonium chloride are put into an emulsification reactor; the temperature is raised to melt the material in the reactor, high-speed stirring is turned on, the stirring speed is 820r / min, the temperature is raised to 115°C, 13 parts of triethanolamine are weighed, and slowly added to the emulsification reactor, and stirred for 25 minutes. Subsequently, a peristaltic pump is used to drip 45 parts of hot water (water temperature is about 82°C) into the reactor, the dripping time is 70 minutes, and after continuing emulsification for 35 minutes, 55 parts of hot water are added, 0.2 parts of cationic polyacrylamide with a molecular weight of 8 million are added, 2 parts of calcium chloride are added, stirred for 35 minutes, cooled to 57°C, and the material is discharged, and the self-made multifunctional emulsified asphalt is prepared.

[0027] The preparation and synthesis method of the self-made silicone resin hydrogel is as follows: 85 parts of tetraethoxysilane and 45 parts of dimethyldiethoxysilane are added to a 500 mL three-necked flask by weight, and the stirrer is turned on, and the water bath temperature is controlled at 28° C. 0.4 parts of 37% hydrochloric acid are added to 105 parts of deionized water, stirred evenly, and added to the three-necked flask three times, each time with an interval of 32 minutes. After the addition is completed, the reaction is continued for 80 minutes, and finally the stirring is stopped to prepare the self-made silicone resin hydrogel.

[0028] Among them, in Example 2, the preparation method of the rapid road repair material is consistent with that of Example 1.

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

[0030] The basalt fiber has a length of 6 mm and a diameter of 17 um; The polyvinyl acetate emulsion is commercially available, and in this embodiment, purchased from Shandong Poly Chemical Co., Ltd.; The preparation and synthesis method of the self-made multifunctional emulsified asphalt is as follows: by weight, 85 parts of 70# asphalt, 7 parts of octadecyl dimethyl benzyl ammonium chloride, 4 parts of monoglyceride, and 10 parts of hexadecyl trimethyl ammonium chloride are put into an emulsification reactor; the temperature is raised to melt the material in the reactor, high-speed stirring is turned on, the stirring speed is 840r / min, the temperature is raised to 125°C, 15 parts of triethanolamine are weighed, and slowly added to the emulsification reactor, and stirred for 30 minutes. Subsequently, 50 parts of hot water (water temperature is about 85°C) are dripped into the reactor using a peristaltic pump, and the dripping time is 75 minutes. After continuing emulsification for 40 minutes, 60 parts of hot water are added, 0.3 parts of cationic polyacrylamide with a molecular weight of 8 million are added, 3 parts of calcium chloride are added, and stirred for 45 minutes. After cooling to 60°C, the material is discharged, and the self-made multifunctional emulsified asphalt is prepared.

[0031] The preparation and synthesis method of the self-made silicone resin hydrogel is as follows: 95 parts of tetraethoxysilane and 50 parts of dimethyldiethoxysilane are added to a 500 mL three-necked flask by weight, the stirrer is turned on, and the water bath temperature is controlled at 35° C. 0.5 parts of 37% hydrochloric acid are added to 110 parts of deionized water, stirred evenly, and added to the three-necked flask three times, each time with an interval of 35 minutes. After the addition is completed, the reaction is continued for 90 minutes, and finally the stirring is stopped to prepare the self-made silicone resin hydrogel.

[0032] Among them, in Example 3, the preparation method of the rapid road repair material is consistent with that of Example 1.

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

[0034] The basalt fiber has a length of 6 mm and a diameter of 17 um; The polyvinyl acetate emulsion is commercially available, and in this embodiment, purchased from Shandong Poly Chemical Co., Ltd.; The preparation and synthesis method of the self-made multifunctional emulsified asphalt is as follows: by weight, 72 parts of 70# asphalt, 5 parts of octadecyl dimethyl benzyl ammonium chloride, 4 parts of monoglyceride, and 9 parts of hexadecyl trimethyl ammonium chloride are put into an emulsification reactor; the temperature is raised to melt the material in the reactor, high-speed stirring is turned on, the stirring speed is 850r / min, the temperature is raised to 120°C, 15 parts of triethanolamine are weighed, and slowly added to the emulsification reactor, and stirred for 20 minutes. Subsequently, a peristaltic pump is used to drip 45 parts of hot water (water temperature is about 85°C) into the reactor, the dripping time is 65 minutes, and after continuing emulsification for 30 minutes, 60 parts of hot water are added, 0.3 parts of cationic polyacrylamide with a molecular weight of 8 million are added, 3 parts of calcium chloride are added, stirred for 30 minutes, cooled to 60°C, and discharged, and the self-made multifunctional emulsified asphalt is prepared.

[0035] The preparation and synthesis method of the self-made silicone resin hydrogel is as follows: 95 parts of tetraethoxysilane and 40 parts of dimethyldiethoxysilane are added to a 500 mL three-necked flask by weight, the stirrer is turned on, and the water bath temperature is controlled at 30° C. 0.4 parts of 37% hydrochloric acid are added to 100 parts of deionized water, stirred evenly, and added to the three-necked flask three times, each time with an interval of 35 minutes. After the addition is completed, the reaction is continued for 80 minutes, and finally the stirring is stopped to prepare the self-made silicone resin hydrogel.

[0036] Among them, in Example 4, the preparation method of the rapid road repair material is consistent with that of Example 1.

[0037] Comparative Example 1 A rapid road repair material comprises the following ingredients, measured by weight: 200 parts of homemade 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 ester.

[0038] The basalt fiber has a length of 6 mm and a diameter of 17 um; The polyvinyl acetate emulsion is commercially available, and in this embodiment, purchased from Shandong Poly Chemical Co., Ltd.; A method for preparing a rapid road repair material: first, add homemade functional emulsified asphalt into a 1L three-necked flask, start an 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 in a beaker, mix the two evenly with a glass rod, then divide them equally and add them into the three-necked flask twice, with an interval of 30 minutes in between, and finally add dodecyl ester and stir for 40-50 minutes, so as to prepare the rapid road repair material.

[0039] This comparative example 1 is based on example 4, except that the addition of the homemade silicone hydrogel is omitted.

[0040] Comparative Example 2 A road surface rapid repair material, comprising the following components by weight: 200 parts of homemade multifunctional emulsified asphalt, 18 parts of polystyrene-butadiene latex, 14 parts of polyvinyl acetate emulsion, 10 parts of basalt fiber, 0.9 parts of dodecyl trimethoxy silane, 1.3 parts of dodecyl alcohol ester, and 8 parts of 30% sodium methyl silicate solution; The basalt fiber has a length of 6 mm and a diameter of 17 um; The polyvinyl acetate emulsion is commercially available, and in this embodiment, purchased from Shandong Poly Chemical Co., Ltd.; A method for preparing a rapid road repair material: first, add a homemade multifunctional emulsified asphalt into a 1L three-necked flask, start an 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 into the three-necked flask twice with an interval of 30 minutes in between, finally add 30% sodium methyl silicate solution and dodecyl ester, stir for 40-50 minutes, and the rapid road repair material is prepared.

[0041] This comparative example 2 is based on example 4, except that the homemade silicone hydrogel is replaced with an equal amount of 30% sodium methyl silicate solution.

[0042] Comparative Example 3 The road surface rapid repair material used in the comparative example 3 is a commercially available cold patch material, with a specific brand name of YM-002.

[0043] Test example With reference to JTG E20-2011 “Test Procedures for Asphalt and Asphalt Mixtures for Highway Engineering”, the penetration at 25°C, elongation at 25°C and softening point tests were carried out. The test results are shown in Table 1.

[0044] Table 1 Performance analysis: From the test results in Table 1, it can be seen that the needle penetration and elongation of Examples 1-4 at 25°C are significantly better than those of the existing commercially available Comparative Example 3, especially the elongation. The elongation of the examples is 2.4-3.2 times higher than that of Comparative Example 3, indicating that the pavement repair materials prepared in Examples 1-4 have good resistance to low-temperature cracking. In addition, in Examples 1-4, the lowest softening point is 93°C, which is 12°C higher than the softening point of Comparative Example 3, indicating that the pavement 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 ratio was as shown in Table 2: Table 2 The concrete obtained by mixing Examples 1-4 and Comparative Examples 1-3 was tested for demulsification time, Marshall stability, 70°C rutting stability, water permeability coefficient, freeze-thaw tensile strength ratio, and 3-hour molding strength value with reference to JTG E20-2011 "Testing Procedures for Asphalt and Asphalt Mixtures for Highway Engineering". The performance test results are shown in Table 3. Table 3 Comprehensive performance analysis: The products of Examples 1-4 of the present invention are added to aggregates, and their rutting stability, Marshall stability, freeze-thaw tensile strength and water seepage resistance are all very excellent. The demulsification time is about 30 minutes, and the 3-hour molding strength can reach more than 5.4KN. Therefore, they can be used as rapid road repair materials.

[0046] In comparative example 1, the addition of the homemade silicone hydrogel was omitted, while in comparative example 2, the homemade silicone hydrogel was replaced with an equal amount of 30% sodium methyl silicate solution.

[0047] The performance of the above two comparative examples is significantly different from that of Examples 1-4 of the present application. The possible reason is that: in the present application, a self-made silicone resin hydrogel is introduced, and 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 water damage to the pavement material; and it and the self-made multifunctional emulsified asphalt of the present application work synergistically, wherein 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 and aging resistance of the asphalt material by coating the emulsified asphalt molecules.

[0048] The performance of commercially available cold patch materials lags behind that of Examples 1-4 of the present application in all aspects. The possible reason is that the present application introduces cationic composite emulsifiers and cationic polyacrylamide into the homemade multifunctional emulsified asphalt. These cationic components can, on the one hand, effectively isolate the asphalt molecules and enhance the stability of the emulsified asphalt. On the other hand, the aggregates in the asphalt concrete are mostly negatively charged. The cationic components can achieve rapid demulsification and rapid coagulation of the emulsified asphalt through the interaction between positive and negative charges, thereby enhancing the bonding effect between asphalt and aggregates.

[0049] The above test data show that the rapid road repair material of the present invention only needs to be mixed with aggregate at room temperature and then filled into the part of the road that needs to be repaired. It is pollution-free to the environment and does not require special machinery. It can be immediately opened to traffic after being rolled by a roller. It can be constructed on rainy days and wet roads and can quickly repair roads. It has good stability after opening to traffic and will not suffer from 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 repair.

[0050] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method 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 in the scope of protection of the present invention.

Claims

1. A rapid road repair material, characterized in that: The composition is as follows by weight: 180-200 parts of homemade multifunctional emulsified asphalt, 15-20 parts of polystyrene-butadiene latex, 10-15 parts of polyvinyl acetate emulsion, 8-12 parts of homemade silicone hydrogel, 8-12 parts of basalt fiber, 0.5-0.9 parts of dodecyltrimethoxysilane, and 0.5-1.5 parts of dodecyl ester.

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

3. A rapid road repair material according to claim 1, characterized in that: The basalt fiber has a length of 6 mm and a diameter of 17 um.

4. A rapid road repair material according to claim 1, characterized in that: The composition is as follows, in parts by weight, including the following ingredients: 200 parts of homemade multifunctional emulsified asphalt, 20 parts of polystyrene butadiene latex, 15 parts of polyvinyl acetate emulsion, 12 parts of homemade silicone hydrogel, 12 parts of basalt fiber, 0.9 parts of dodecyltrimethoxysilane, and 1.5 parts of dodecyl ester.

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

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

7. A rapid road repair material according to any one of claims 1 to 6, characterized in that: The method for preparing the self-made multifunctional emulsified asphalt comprises: putting 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 into an emulsification reaction kettle; heating the materials in the kettle until they are melted, starting high-speed stirring at a stirring speed of 800-850 r / min, heating to 110-125° C., weighing 12-15 parts of triethanolamine, and slowly adding the mixture into the emulsification reaction kettle; Stir for 20-30 minutes; then use a peristaltic pump to drip 40-50 parts of hot water with a temperature of 80-85°C into the reactor for 60-75 minutes. After continuing emulsification for 30-40 minutes, add 50-60 parts of hot water, add 0.1-0.3 parts of cationic polyacrylamide with a molecular weight of 8 million, add 1-3 parts of calcium chloride, stir for 30-45 minutes, cool to 55-60°C, and discharge the material to prepare the homemade multifunctional emulsified asphalt.

8. A rapid road repair material according to any one of claims 1 to 6, characterized in that: The preparation and synthesis method of the homemade silicone resin hydrogel is as follows: by weight, 80-95 parts of tetraethoxysilane and 40-50 parts of dimethyldiethoxysilane are added to a reaction container, a stirrer is turned on, and the water bath temperature is controlled at 25-35° C.; 0.3-0.5 parts of 37% hydrochloric acid are added to 100-110 parts of deionized water, the mixture is stirred evenly, and the mixture is added to a three-necked flask three times, each time with an interval of 30-35 minutes, and after the addition is completed, the reaction is continued for 75-90 minutes, and finally the stirring is stopped, so that the homemade silicone resin hydrogel is prepared.

9. A method for preparing a rapid road repair material according to any one of claims 1 to 6, characterized in that: The preparation method of the road surface rapid repair material is as follows: first, adding a homemade multifunctional emulsified asphalt into a reaction container, starting an electric mechanical stirring, adding polystyrene butadiene latex, stirring for 20-30 minutes, adding polyvinyl acetate emulsion, stirring for 25-35 minutes; weighing basalt fiber and dodecyl trimethoxy silane into a beaker, mixing the two evenly with a glass rod, then dividing them equally and adding them into a three-necked flask twice with an interval of 30 minutes in between, and finally adding homemade silicone resin hydrogel and dodecyl alcohol ester, stirring for 40-50 minutes, so as to prepare the road surface rapid repair material.

10. An asphalt concrete, characterized in that: The raw materials thereof include the rapid pavement repair material as described in any one of claims 1-6.

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