Reactive cold patch material for cold mixing and cold paving as well as preparation method and application of reactive cold patch material

Abstract

The invention provides a reaction type cold patch material for cold mixing and cold paving and a preparation method and application thereof.The reaction type asphalt cold patch liquid is composed of flexible modified asphalt, an alcohol acid diluent, an auxiliary and a curing agent, 70 # matrix asphalt is modified through CTFR-epoxy resin, low-molecular-weight polyamide is selected as the curing agent, and the reaction type asphalt cold patch liquid is prepared at the normal temperature; the method comprises the following steps: mixing an old milling material milled on site and a reaction type cold plate cold paving asphalt cold repairing material in situ according to a certain proportion to obtain a recycled asphalt mixture which is high in looseness, good in flowability, capable of quickly forming strength and meeting certain pavement performance, re-paving a pavement by using the recycled asphalt mixture, and finally rolling to form a new pavement. The in-situ mixed recycled cold plate cold paving asphalt mixture has the advantages that the early strength and durability are good, the service life of a road can be effectively prolonged, the implementation cost is low, and popularization and implementation are convenient.

Description

Technical Field

[0001] The present application belongs to the technical field of road construction related materials, and specifically relates to a reactive cold-mix cold-paving cold patch material and a preparation method and application thereof. Background Art

[0002] In the existing technology, with the rapid development of the scale of high-grade highway construction in my country, the status of pavement maintenance technology and pavement construction materials in national infrastructure construction has become increasingly prominent. Improving the construction quality of roads and extending the service life of roads can effectively reduce the maintenance costs of roads in the later stage and significantly improve the safety factor of roads during driving.

[0003] In the prior art, asphalt cold patch material is a material specially used for the rapid repair of potholes in roads, but the current cold patch material still has disadvantages such as high cost, low strength, poor water stability, and cumbersome preparation. Therefore, in order to better play the advantages of cold patch materials, research and development of cold patch materials needs to be carried out. Ordinary cold patch materials often have low initial strength, and the strength growth is slow in the later stage due to the slow volatilization of the diluent, resulting in poor performance in use, easy to loosen and fall off, and can only be used as a temporary treatment measure for diseases. Therefore, it is necessary to develop a reactive high-performance asphalt cold patch material. Summary of the invention

[0004] In order to solve the problems of low early strength, slow strength growth, poor performance, easy loosening and falling off of traditional asphalt cold patch materials in the prior art, this application proposes a reactive cold plate cold laying asphalt cold patch material;

[0005] In order to solve the technical problem raised by the present application, the present application also provides a method for preparing a reactive cold-mix cold-paving cold patch material;

[0006] In order to solve the technical problem raised in the present application, the present application also provides an application of a reactive cold-mix cold-paving cold patch material.

[0007] The present application adopts the following scheme: a reactive cold-mix cold-paving cold patch material, which is composed of the following components by weight: 58-72 parts of flexible modified asphalt, 24-31 parts of alkyd diluent, 1-3 parts of coupling agent, 2-5 parts of auxiliary agent, and 10-15 parts of curing agent;

[0008] The flexible modified asphalt is obtained by compounding SBS modified asphalt and epoxy modified asphalt in a mass ratio of 1:(1-5);

[0009] Among them, the epoxy modified asphalt is CTFR-epoxy resin modified asphalt;

[0010] Among them, CTFR is carboxyl-terminated liquid fluororubber;

[0011] The curing agent is low molecular weight polyamide, and the molecular weight range of the low molecular weight polyamide is: 875-4250.

[0012] In some possible embodiments, the preparation method of CTFR-epoxy resin modified asphalt comprises the following steps:

[0013] CTFR-epoxy resin, 70# asphalt matrix, tetrahydrofuran, acetone and alkyd diluent are sequentially put into a stirring kettle in a mass ratio of 3:(11.5-13.6):0.7:1.8:(8.2-9.5), and dispersed for 30min-50min at 155℃-167℃, 2200rpm-2600rpm with intermittent nitrogen introduction to obtain CTFR-epoxy resin modified asphalt.

[0014] In some possible embodiments, the preparation method of CTFR-epoxy resin comprises the following steps:

[0015] Step 101. Put bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether into a reaction kettle in sequence, and activate them in a water bath at 60° C. and 550-830 rpm for 10-30 min to obtain a liquid reaction system A;

[0016] Step 102. Add 0.5%-1% triphenylphosphine dropwise into the liquid reaction system A prepared in step 101, react for 4h-8h in a water bath at 100°C and 820rpm-1200rpm, and then cool the reaction system to room temperature to obtain CTFR-epoxy resin.

[0017] In some possible embodiments, in step 101, the mass ratio of bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether is 15: (2.25-4.62): (1.25-3.1): (1.45-1.55);

[0018] In step 102, the mass ratio of the liquid reaction system A to triphenylphosphine is 1:(12.2-13.5).

[0019] In some possible embodiments, the mass ratio of the coupling agent is 1-3 parts by weight. The coupling agent has dual functionality, enhances interfacial bonding, improves dispersibility, and enhances durability, and can effectively improve the bonding between asphalt and aggregate. The coupling agent is preferably a silane coupling agent, preferably glycidoxypropyltrimethoxysilane or aminopropyltriethoxysilane;

[0020] In some possible embodiments, the molecular weight of the low molecular weight polyamide is in the range of 1235-2525, and the amine value of the low molecular weight polyamide is in the range of 222 mgKOH / g-255 mgKOH / g.

[0021] The preparation method of low molecular weight polyamide comprises the following steps:

[0022] Step 301. Put the oleic acid dimer into a reaction kettle and activate it at 116° C. and 800 rpm for 30 min-40 min to obtain an activated system F;

[0023] Step 302. Add 2-ethoxyethyl ether dropwise into the activated system F prepared in step 301. After the addition is completed, react at 190°C and 1100rpm for 2h-3h. During the reaction, sample the reaction system regularly and measure the acid value of the sample. When the acid value decreases and remains constant, the reaction reaches the end point. The reaction system is cooled and distilled under reduced pressure to obtain a low molecular weight polyamide.

[0024] In order to solve the technical problem raised by the present application, the present application also provides a method for preparing a reactive cold-mix cold-paving cold patch material, comprising the following steps:

[0025] Step 401. Put the flexible modified asphalt into an asphalt stirring kettle, and stir it for 20 min-35 min at 145° C.-156° C. and 1200 rpm-1600 rpm to obtain activated flexible asphalt D;

[0026] Step 402. Add composite filler, alkyd diluent and additives to the activated flexible asphalt D prepared in step 401 in sequence, stir for 30 min-55 min at 60° C.-80° C. and 1100 rpm-1200 rpm, and obtain prefabricated asphalt cold patch material E;

[0027] Step 403. Before the road repair operation, the curing agent, the prefabricated asphalt cold patch material E prepared in step 402, and the road milling material are sequentially put into a mixer truck, and stirred at room temperature at 1800rpm-2200rpm for min-4min to obtain the finished asphalt cold patch material.

[0028] In order to solve the technical problem raised in the present application, the present application also provides an application of a reactive cold-mix cold-paving cold patch material, wherein the asphalt cold patch material is used for asphalt pavement repair.

[0029] Asphalt pavement repair operations include the following steps:

[0030] Pit cleaning: determine the position of the pit, mill the edge of the pit to create a 90° connection, and after milling, clean the pit to ensure there is no debris around or outside the pit;

[0031] Pothole repair: Apply diluted SBS modified asphalt or emulsified asphalt tack coat oil around the bottom of the pothole. After the coating is completed, spread the asphalt cold patch material into the pothole. The Matsuura coefficient is 1.4;

[0032] Compact and open to traffic: Use a steel wheel roller to compact the asphalt cold patch material. After 3 hours of maintenance, it can be opened to traffic, and the asphalt pavement repair is completed.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] The present application provides a reactive cold-mix cold-paving cold patch material, a preparation method thereof and an application thereof, wherein the reactive asphalt cold patch material is composed of flexible modified asphalt, a coupling agent, an alkyd diluent, an additive and a curing agent, and 70# base asphalt is modified by using CTFR-epoxy resin, and a low molecular weight polyamide is selected as a curing agent. At room temperature, old milling materials and reactive cold plate cold-paving asphalt cold patch liquid are mixed in situ in a certain proportion to obtain a recycled asphalt mixture with high looseness, good fluidity, the ability to quickly form strength, and meeting certain road performance requirements, and the recycled asphalt mixture is used for re-paving the road surface, and finally rolled to form a new road surface; the recycled cold plate cold-paving asphalt mixture mixed in situ has good early strength and durability, can effectively extend the service life of the road, and has the advantages of low implementation cost and easy promotion and implementation. DETAILED DESCRIPTION

[0035] The present technical solution is further illustrated with reference to Examples 1-3 and Comparative Examples 1-3.

[0036] Example 1

[0037] (1) The preparation method of CTFR-epoxy resin comprises the following steps:

[0038] Step 101. Put bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether into a reaction kettle in sequence, and activate them in a water bath at 60° C. and 680 rpm for 12 minutes to obtain a liquid reaction system A;

[0039] Step 102. Add 0.65% by mass of triphenylphosphine dropwise into the liquid reaction system A prepared in step 101, react for 8 hours in a water bath at 100° C. and 880 rpm, and then cool the reaction system to room temperature to obtain CTFR-epoxy resin.

[0040] Wherein, in step 101, the mass ratio of bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether is 15:2.35:1.25:1.45;

[0041] In step 102, the mass ratio of the liquid reaction system A to triphenylphosphine is 1:12.5.

[0042] (2) The preparation method of CTFR-epoxy resin modified asphalt comprises the following steps:

[0043] CTFR-epoxy resin, 70# asphalt matrix, tetrahydrofuran, acetone and alkyd diluent were placed in a stirring kettle in a mass ratio of 3:11.8:0.7:1.8:8.8. After dispersion for 30 minutes at 155°C, 2600rpm and intermittent nitrogen introduction, CTFR-epoxy resin modified asphalt was obtained.

[0044] (3) The coupling agent is selected from glycidoxypropyltrimethoxysilane, with a mass ratio of 1 part;

[0045] (4) The preparation method of low molecular weight polyamide comprises the following steps:

[0046] Step 301. Put the oleic acid dimer into a reaction kettle and activate it at 116° C. and 800 rpm for 30 min to obtain an activated system F;

[0047] Step 302. Add 2-ethoxyethyl ether dropwise into the activated system F prepared in step 301. After the addition is completed, react at 190° C. and 1100 rpm for 2 hours. During the reaction, sample the reaction system regularly and measure the acid value of the sample. When the acid value decreases and remains constant, the reaction reaches the end point. The reaction system is cooled and distilled under reduced pressure to obtain a low molecular weight polyamide.

[0048] The molar ratio of oleic acid dimer to 2-ethoxyethyl ether is 1:3.

[0049] (5) A method for preparing a reactive cold-mix cold-paving cold patch material, comprising the following steps:

[0050] Step 401. According to the component table shown in Table 1, the flexible modified asphalt is put into an asphalt stirring kettle, and stirred at 146° C. and 1600 rpm for 20 minutes to obtain activated flexible asphalt D;

[0051] Step 402. Add a coupling agent, an alkyd diluent and an auxiliary agent to the activated flexible asphalt D prepared in step 401 in sequence, and stir for 30 minutes at 60° C. and 1200 rpm to obtain a prefabricated asphalt cold replenishment liquid E;

[0052] Step 403. According to the component table shown in Table 1, before the road repair operation, the curing agent, the prefabricated asphalt cold patch liquid E prepared in step 402, and the road milling material are sequentially put into a mixer truck, and stirred at room temperature and 2200 rpm for 2 minutes to obtain the finished asphalt cold patch material.

[0053] Example 2

[0054] (1) The preparation method of CTFR-epoxy resin comprises the following steps:

[0055] Step 101. Put bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether into a reaction kettle in sequence, and activate them in a water bath at 60° C. and 780 rpm for 20 minutes to obtain a liquid reaction system A;

[0056] Step 102. Add 0.65% by mass of triphenylphosphine dropwise into the liquid reaction system A prepared in step 101, react for 6 hours in a water bath at 100° C. and 1000 rpm, and then cool the reaction system to room temperature to obtain CTFR-epoxy resin.

[0057] Wherein, in step 101, the mass ratio of bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether is 15:3.55:2.1:1.5;

[0058] In step 102, the mass ratio of the liquid reaction system A to triphenylphosphine is 1:13.1.

[0059] (2) The preparation method of CTFR-epoxy resin modified asphalt comprises the following steps:

[0060] CTFR-epoxy resin, 70# asphalt matrix, tetrahydrofuran, acetone and alkyd diluent were placed in a stirring kettle in a mass ratio of 3:12.4:0.7:1.8:9.1. After dispersion for 40 minutes at 160°C, 2400rpm and intermittent nitrogen introduction, CTFR-epoxy resin modified asphalt was obtained.

[0061] (3) The coupling agent is selected from glycidoxypropyltrimethoxysilane, with a mass ratio of 2 parts;

[0062] (4) The preparation method of low molecular weight polyamide comprises the following steps:

[0063] Step 301. Put the oleic acid dimer into a reaction kettle and activate it at 116° C. and 800 rpm for 35 min to obtain an activated system F;

[0064] Step 302. Add 2-ethoxyethyl ether dropwise into the activated system F prepared in step 301. After the addition is completed, react at 190° C. and 1100 rpm for 3 hours. During the reaction, sample the reaction system regularly and measure the acid value of the sample. When the acid value decreases and remains constant, the reaction reaches the end point. The reaction system is cooled and distilled under reduced pressure to obtain a low molecular weight polyamide.

[0065] The molar ratio of oleic acid dimer to 2-ethoxyethyl ether is 1:3.

[0066] (5) A method for preparing a reactive cold-mix cold-paving cold patch material, comprising the following steps:

[0067] Step 401. According to the component table shown in Table 1, the flexible modified asphalt is put into an asphalt stirring kettle, and stirred at 150° C. and 1400 rpm for 30 minutes to obtain activated flexible asphalt D;

[0068] Step 402. Add a coupling agent, an alkyd diluent and an auxiliary agent to the activated flexible asphalt D prepared in step 401 in sequence, and stir for 40 minutes at 70° C. and 1150 rpm to obtain a prefabricated asphalt cold replenishment liquid E;

[0069] Step 403. According to the component table shown in Table 1, before the road repair operation, the curing agent, the prefabricated asphalt cold patch liquid E prepared in step 402, and the road milling material are sequentially put into a mixer truck, and stirred at room temperature and 2000 rpm for 3 minutes to obtain the finished asphalt cold patch material.

[0070] Example 3

[0071] (1) The preparation method of CTFR-epoxy resin comprises the following steps:

[0072] Step 101. Put bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether into a reaction kettle in sequence, and activate them in a water bath at 60° C. and 830 rpm for 30 minutes to obtain a liquid reaction system A;

[0073] Step 102. Add 0.65% by mass of triphenylphosphine dropwise into the liquid reaction system A prepared in step 101, react for 4 hours in a water bath at 100° C. and 1200 rpm, and then cool the reaction system to room temperature to obtain CTFR-epoxy resin.

[0074] Wherein, in step 101, the mass ratio of bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether is 15:4.62:3.1:1.55;

[0075] In step 102, the mass ratio of the liquid reaction system A to triphenylphosphine is 1:13.5.

[0076] (2) The preparation method of CTFR-epoxy resin modified asphalt comprises the following steps:

[0077] CTFR-epoxy resin, 70# asphalt matrix, tetrahydrofuran, acetone and alkyd diluent were placed in a stirring kettle in a mass ratio of 3:13.6:0.7:1.8:9.5. After dispersion for 50 minutes at 167°C, 2200rpm and intermittent nitrogen introduction, CTFR-epoxy resin modified asphalt was obtained.

[0078] (3) The coupling agent is selected from glycidoxypropyltrimethoxysilane, with a mass ratio of 3:1;

[0079] (4) The preparation method of low molecular weight polyamide comprises the following steps:

[0080] Step 301. Put the oleic acid dimer into a reaction kettle and activate it at 116° C. and 800 rpm for 40 min to obtain an activated system F;

[0081] Step 302. Add 2-ethoxyethyl ether dropwise into the activated system F prepared in step 301. After the addition is completed, react at 190° C. and 1100 rpm for 3 hours. During the reaction, sample the reaction system regularly and measure the acid value of the sample. When the acid value decreases and remains constant, the reaction reaches the end point. The reaction system is cooled and distilled under reduced pressure to obtain a low molecular weight polyamide.

[0082] The molar ratio of oleic acid dimer to 2-ethoxyethyl ether is 1:3.

[0083] (5) A method for preparing a reactive cold-mix cold-paving cold patch material, comprising the following steps:

[0084] Step 401. According to the component table shown in Table 1, the flexible modified asphalt is put into an asphalt stirring kettle, and stirred at 156° C. and 1200 rpm for 35 minutes to obtain activated flexible asphalt D;

[0085] Step 402. Add a coupling agent, an alkyd diluent and an auxiliary agent to the activated flexible asphalt D prepared in step 401 in sequence, and stir for 55 minutes at 80° C. and 1100 rpm to obtain a prefabricated asphalt cold replenishment liquid E;

[0086] Step 403. According to the component table shown in Table 1, before the road repair operation, the curing agent, the prefabricated asphalt cold patch liquid E prepared in step 402, and the road milling material are sequentially put into a mixer truck, and stirred at room temperature and 1800 rpm for 4 minutes to obtain the finished asphalt cold patch material.

[0087] Comparative Example 1

[0088] The flexible modified asphalt in Example 3 was completely replaced with a single SBS modified asphalt, and the remaining components and processes remained unchanged.

[0089] Comparative Example 2

[0090] The coupling agent in Example 3 was replaced with an acid ester coupling agent, and the other components and processes remained unchanged.

[0091] Comparative Example 3

[0092] The low molecular weight polyamide in Example 3 was replaced by tetrahydrophthalic anhydride, and the other components and processes remained unchanged.

[0093] Table 1 Components of Examples 1-3 and Comparative Examples 1-3

[0094]

[0095] The asphalt cold patch materials prepared in Examples 1-3 and Comparative Examples 1-3 were subjected to the following tests:

[0096] According to the provisions of JTGE20-2011 "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering" and JTGF40-2004 "Technical Specifications for Highway Asphalt Pavement Construction", the test pieces corresponding to Examples 1-3 and Comparative Examples 1-3 were prepared, and the void ratio, elongation at break, initial Marshall stability (25°C water bath for 3h), Marshall stability (60°C water bath for 3d), and residual strength ratio of freeze-thaw splitting test of the corresponding test pieces were measured. The test results are shown in Table 2 below.

[0097] Table 2 Test results

[0098]

[0099] Table 2

[0100]

[0101] It can be seen from the test results in Table 2 that in Examples 1-3, 70# matrix asphalt is modified by CTFR-epoxy resin and SBS modified asphalt, and a large number of carboxyl groups are introduced into 70# matrix asphalt, which, on the one hand, offsets the stacking effect within the matrix asphalt itself, forms a dense void structure, and significantly improves the bonding effect of the flexible modified asphalt, that is, effectively improves the bonding ability of the flexible modified asphalt and the milling material. By selecting low molecular weight polyamide as a curing agent and controlling the amine value and molecular weight of the low molecular weight polyamide, a large number of flexible groups are introduced into the asphalt system during the curing process of the asphalt cold patch material, so that the early strength of the asphalt cold patch material is rapidly improved, and the Marshall stability, the residual strength ratio of the freeze-thaw splitting test, the dynamic stability, and the residual stability of the immersion Marshall test are significantly improved;

[0102] When the temperature difference between day and night is large and it needs to be used in alternating hot and cold scenarios, low molecular weight polyamide provides a large number of binding sites for flexible modified asphalt. After low molecular weight polyamide is compounded with flexible modified asphalt, a cross-linked network structure can be formed, and a large number of flexible groups are contained near the binding sites. The elongation at break is significantly improved, and the resistance to thermal expansion and contraction is significantly improved, which can improve the road performance of asphalt cold patch materials. The Marshall stability, residual strength ratio of freeze-thaw splitting experiments, residual stability of immersion Marshall tests, and dynamic stability are significantly improved, which can effectively reduce the number of road repairs. When the temperature difference between day and night is large in winter, vertical cracking is not easy to occur, which meets the road repair needs in high-altitude cold areas and effectively extends the service life of asphalt roads. It has the advantages of simple preparation method, strong applicability, low implementation cost, and easy promotion and implementation.

[0103] In Comparative Example 1, all the flexible modified asphalt is replaced with single SBS modified asphalt. The carboxyl content in the asphalt cold patch material is significantly reduced, and the bonding ability with the milling material is significantly reduced. Affected by the stacking effect of the SBS modified asphalt itself, the porosity and filling ratio in the asphalt cold patch material are significantly reduced, which leads to reduced compatibility between the SBS modified asphalt and the filler in the asphalt cold patch material, thereby reducing the road performance of the asphalt cold patch material itself.

[0104] In Comparative Example 2, glycidoxypropyltrimethoxysilane is replaced with an acid ester coupling agent, which significantly reduces the contact area adhesion between the flexible modified asphalt and the milling material. The adhesion between the asphalt cold patch materials is significantly reduced, and the porosity between the asphalt mixtures is increased. Therefore, the overall road performance of the asphalt cold patch material is reduced.

[0105] In Comparative Example 3, the low molecular weight polyamide is replaced with tetrahydrophthalic anhydride. Tetrahydrophthalic anhydride is a commonly used anhydride curing agent, and its bonding ability with CTFR-epoxy resin is low. During the curing process of the asphalt cold patch material, the flexible groups in the asphalt cold patch material are significantly reduced, the mechanical properties of the asphalt cold patch material itself are significantly reduced, and its resistance to thermal expansion and contraction are significantly reduced, making it difficult to meet the usage requirements in winter scenarios. The Marshall stability, freeze-thaw splitting test residual strength ratio, and dynamic stability are significantly reduced.

[0106] The above are only embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reactive cold-mix cold-paving cold-filling liquid, characterized in that: The composition is composed of the following components by weight: 58-72 parts of flexible modified asphalt, 24-31 parts of alkyd diluent, 1-3 parts of coupling agent, 2-5 parts of auxiliary agent and 10-15 parts of curing agent; The flexible modified asphalt is obtained by compounding SBS modified asphalt and epoxy modified asphalt in a mass ratio of 1:(1-5); Among them, the epoxy modified asphalt is CTFR-epoxy resin modified asphalt; The curing agent is low molecular weight polyamide, and the molecular weight range of the low molecular weight polyamide is: 875-4250.

2. A reactive cold-mix cold-paving cold-supplement liquid according to claim 1, characterized in that: The preparation method of CTFR-epoxy resin modified asphalt comprises the following steps: CTFR-epoxy resin, 70# asphalt matrix, tetrahydrofuran, acetone and alkyd diluent are sequentially put into a stirring kettle, and dispersed for 30min-50min at 155℃-167℃, 2200rpm-2600rpm with intermittent nitrogen introduction to obtain CTFR-epoxy resin modified asphalt.

3. A reactive cold-mix cold-paving cold-supplement liquid according to claim 2, characterized in that: The preparation method of CTFR-epoxy resin comprises the following steps: Step 101. Put bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether into a reaction kettle in sequence, and activate them in a water bath at 60° C. and 550-830 rpm for 10-30 min to obtain a liquid reaction system A; Step 102. Add 0.5%-1% triphenylphosphine dropwise into the liquid reaction system A prepared in step 101, react for 4h-8h in a water bath at 100°C and 820rpm-1200rpm, and then cool the reaction system to room temperature to obtain CTFR-epoxy resin.

4. A reactive cold-mix cold-paving cold-supplement liquid according to claim 3, characterized in that: In step 101, the mass ratio of bisphenol A epoxy resin, carboxyl-terminated liquid fluororubber, acetone, and cyclopentyl methyl ether is 15: (2.25-4.62): (1.25-3.1): (1.45-1.55); In step 102, the mass ratio of the liquid reaction system A to triphenylphosphine is 1:(12.2-13.5).

5. The reactive cold-mix cold-paving cold-supplement liquid according to claim 1, characterized in that: The coupling agent includes glycidoxypropyltrimethoxysilane or aminopropyltriethoxysilane.

6. The reactive cold-mix cold-paving cold patch material according to claim 1, characterized in that: The molecular weight range of the low molecular weight polyamide is 1235-2525, and the amine value of the low molecular weight polyamide is 222 mgKOH / g-255 mgKOH / g.

7. A method for preparing a reactive cold-mix cold-paving cold-supplement solution according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 401. Put the flexible modified asphalt into an asphalt stirring kettle, and stir it for 20 min-35 min at 145° C.-156° C. and 1200 rpm-1600 rpm to obtain activated flexible asphalt D; Step 402. Add a coupling agent, an alkyd diluent and an auxiliary agent to the activated flexible asphalt D prepared in step 401 in sequence, and stir for 30 min to 55 min at 60° C. to 80° C. and 1100 rpm to 1200 rpm to obtain a prefabricated asphalt cold replenishment liquid E; Step 403. Before the road repair operation, the curing agent, the prefabricated asphalt cold patch liquid E prepared in step 402, and the road milling material are sequentially put into a mixer truck, and stirred for 2 min-4 min at room temperature and 1800 rpm-2200 rpm to obtain the finished asphalt cold patch material.

8. The use of a reactive cold-mix cold-paving cold patch material according to any one of claims 1 to 6, characterized in that: The asphalt cold patch material is used for repairing asphalt pavement.

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