Active repairing agent for road net-shaped crack as well as preparation method and application of active repairing agent

Abstract

The invention provides an active repairing agent for road net-shaped cracks as well as a preparation method and application thereof, belongs to the technical field of road materials, and aims at solving the technical problems that after the road net-shaped cracks are repaired, the strength is slowly improved, and open traffic is limited after the road net-shaped cracks are repaired. The active repairing agent comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 20-40 parts of an active diluent, 20-30 parts of modified asphalt, 10-30 parts of a toughening agent, 4-8 parts of a silane coupling agent and 100 parts of filler; and the component B is a curing agent solution. The active diluent and the inorganic calcium salt curing agent are subjected to complexation reaction and interwoven to form a spatial net structure for rapid curing, the active repairing agent has the characteristics of high permeability and rapid strength formation, and traffic can be opened after net crack repairing is completed.

Description

Technical Field

[0001] The invention belongs to the technical field of road materials, and in particular relates to an active repair agent for road network cracks and a preparation method and application thereof. Background Art

[0002] Grid cracks are one of the common diseases of asphalt roads, with high incidence, great harm and high difficulty in repair. Its main manifestations are: cracks that are connected or partially connected appear on the road surface, with a width of less than 10mm and a size of about 20-50cm. They generally show tortoise shell patterns and extend quickly. If the grid crack road surface is not repaired and maintained in time, it will greatly affect the driving comfort of the road and reduce its service life.

[0003] At present, non-grooving repair methods are mainly used to repair micro cracks such as cracks. Patent CN106830767A discloses a regeneration seal material for treating cracks in asphalt pavement and its preparation method, which is characterized by being composed of an organic-inorganic composite emulsion and fine aggregates. The regeneration seal material has strong permeability and plays a good role in sealing and waterproofing cracks in the cracks, and has a significant effect on the regeneration and restoration of aged asphalt. Patent CN113956844A discloses a room temperature crack repair material, preparation method and application, which uses diesel in combination with a pan and warm mix agent to increase the water melting capacity of asphalt, and at the same time uses the dilution effect of diesel and water on asphalt to give asphalt good flowability. The material can be used at room temperature and can be used to directly repair cracks in asphalt pavement.

[0004] In the above method, the repair material has good fluidity and permeability, and can be used to fill, waterproof and repair the cracks in the network. However, due to the liquid characteristics of the repair material, the strength increases slowly, and there are certain restrictions on opening traffic after repair. Summary of the invention

[0005] In view of the technical problems that after the cracks in the road network are repaired, the strength is slowly improved and there are restrictions on opening traffic after the repair, the present invention proposes an active repair agent for road network cracks and a preparation method and application thereof, which uses an active diluent and an inorganic calcium salt curing agent to undergo a complex reaction to interweave and form a spatial network structure and quickly develop strength, thereby solving the problem of traffic restrictions after repair.

[0006] In order to achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] An active repair agent for road network cracks comprises component A and component B, wherein component A comprises the following raw materials in parts by mass: 20-40 parts of active diluent, 20-30 parts of modified asphalt, 10-30 parts of toughening agent, 4-8 parts of silane coupling agent and 100 parts of filler; and component B is a curing agent solution.

[0008] The active diluent comprises the following raw materials in parts by mass: 10-15 parts of polyhydroxy compounds, 5-8 parts of saturated fatty acids, 20-30 parts of organic anhydrides, 6-10 parts of phthalates and 0.5-1 parts of catalysts.

[0009] The polyhydroxy compound is one or more of sorbitol, xylitol or glucose; the saturated fatty acid is lauric acid and / or myristic acid; the organic acid anhydride is nadic anhydride and / or alkenyl succinic anhydride; and the catalyst is p-toluenesulfonic acid and / or trifluoromethanesulfonic acid.

[0010] The synthesis method of the active diluent comprises: mixing polyhydroxy compounds, organic anhydrides and phthalates to carry out a first reaction; then adding a mixture of a catalyst and saturated fatty acids to carry out a second reaction; and finally performing reduced pressure distillation to obtain the active diluent.

[0011] The first reaction temperature is 120-140°C, and the time is 0.5-1h; the second reaction temperature is 140-160°C, and the time is 2-4h; and the reduced pressure distillation pressure is 10-20kPa.

[0012] The modified asphalt is polyethylene modified asphalt or / and EVA modified asphalt; the toughening agent is deketoxime type silicone rubber or / and deamidation type silicone rubber.

[0013] The silane coupling agent is vinyl trimethoxy silane and / or amino silane; the filler is corundum and / or quartz sand.

[0014] The curing agent solution is a suspension of calcium hydroxide and calcium silicate, the concentration of the suspension is 10-30wt%, and the mass ratio of calcium hydroxide to calcium silicate is 1:(1-3).

[0015] A method for preparing an active repair agent for road cracks. The preparation of component A comprises the following steps: heating the modified asphalt to 110-130°C, adding a toughening agent and an active diluent in sequence, and shearing and mixing; then adding a silane coupling agent and a filler, and stirring and mixing.

[0016] An application method of an active repair agent for road cracks, comprising: blowing the cracked road surface until the surface and cracks are dust-free, spraying component B first, then spraying or scraping component A evenly until the cracks are full, and then spraying component B; the amount of component B is 0.2-0.3kg / m 2 ; The dosage of component A is 2-5kg / m 2 .

[0017] Beneficial effects of the present invention:

[0018] (1) The active diluent of the present invention has ester groups, long fatty chains, terminal hydroxyl groups, and terminal carboxyl functional groups distributed on the molecular chain, which has the dual effects of high-efficiency viscosity reduction and reaction curing; through the complex reaction between the terminal functional groups of the active diluent and the inorganic calcium salt curing agent, a spatial network structure is interwoven to form a rapid curing.

[0019] (2) The silicone adhesive toughening agent of the present invention can slowly react with water or moisture to form a cross-linked structure, and the silane coupling agent can form a bridging effect between the inorganic filler and the organic polymer, thereby improving the later strength and durability of the repair agent.

[0020] (3) The active repair agent of the present invention has the characteristics of strong permeability and rapid strength formation, and traffic can be opened after the crack repair is completed. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0024] 15 parts of xylitol, 30 parts of alkenyl succinic anhydride and 10 parts of phthalate are added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 140°C for 1 hour; then a mixture of 1 part of trifluoromethanesulfonic acid catalyst and 8 parts of myristic acid is added to carry out a second reaction at a temperature of 160°C for 4 hours; finally, low molecular weight products and unreacted monomers are removed by reduced pressure distillation at a pressure of 10 kPa to obtain an active diluent.

[0025] Heat 30 parts of EVA modified asphalt to 130°C, add 30 parts of deamidated silicone adhesive toughening agent and 20 parts of active diluent in sequence, and shear mix for 50 minutes at a shear rate of 4000 rpm; then add 8 parts of aminosilane and 100 parts of quartz sand, stir and mix for 60 minutes at a stirring rate of 1000 rpm to obtain an active repair agent for road network cracks.

[0026] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 10wt% and a mass ratio of 1:2 is then evenly applied with a scraper at 5kg / m 2 Active repair agent until the cracks are full, then spray 0.1kg / m 2The concentration of the suspension is 10wt%. After the network cracks are repaired, traffic can be opened.

[0027] Example 2

[0028] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0029] 13 parts of xylitol, 27 parts of alkenyl succinic anhydride and 8 parts of phthalate were added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 135°C for 50 minutes. Then, a mixture of 0.8 parts of trifluoromethanesulfonic acid catalyst and 7 parts of myristic acid was added to carry out a second reaction at a temperature of 155°C for 3.5 hours. Finally, low molecular weight products and unreacted monomers were removed by reduced pressure distillation at a pressure of 14 kPa to obtain an active diluent.

[0030] Heat 27 parts of EVA modified asphalt to 125°C, add 25 parts of deamidated silicone glue and 25 parts of active diluent in sequence, and shear mix for 40 minutes at a shear rate of 3500 rpm; then add 7 parts of aminosilane and 100 parts of quartz sand, stir and mix for 50 minutes at a stirring rate of 800 rpm to obtain an active repair agent for road network cracks.

[0031] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.2kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 20wt% and a mass ratio of 1:2 is then evenly applied at 4kg / m 2 Active repair agent until the cracks are full, then spray 0.1kg / m 2 The concentration of the suspension is 20wt%. After the network cracks are repaired, traffic can be opened.

[0032] Example 3

[0033] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0034] 12 parts of glucose, 23 parts of nadic anhydride and 7 parts of phthalate are added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 128°C for 40 minutes; then a mixture of 0.7 parts of p-toluenesulfonic acid catalyst and 6 parts of lauric acid is added to carry out a second reaction at a temperature of 148°C for 2.8 hours; finally, low molecular weight products and unreacted monomers are removed by reduced pressure distillation at a pressure of 18 kPa to obtain an active diluent.

[0035] Heat 25 parts of polyethylene modified asphalt to 120°C, add 17 parts of deketoxime type silicone rubber toughening agent and 35 parts of active diluent in sequence, and shear mix for 30 minutes at a shear rate of 3000 rpm; then add 6 parts of vinyl trimethoxy silane and 100 parts of corundum, stir and mix for 40 minutes at a stirring rate of 500 rpm to obtain an active repair agent for road network cracks.

[0036] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 30wt% and a mass ratio of 1:2 is then evenly sprayed at 3kg / m 2 Active repair agent until the cracks are full, then spray 0.2kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 30wt% can be used to open the network to traffic after the cracks are repaired.

[0037] Example 4

[0038] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0039] 10 parts of sorbitol, 20 parts of nadic anhydride and 6 parts of phthalate are added to a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 120°C for 0.5 h; then a mixture of 0.5 parts of p-toluenesulfonic acid and 5 parts of lauric acid is added to carry out a second reaction at a temperature of 140°C for 2 h; finally, low molecular weight products and unreacted monomers are removed by reduced pressure distillation at a pressure of 20 kPa to obtain an active diluent.

[0040] Heat 20 parts of polyethylene modified asphalt to 110°C, add 10 parts of deketoxime silicone glue and 40 parts of active diluent in sequence, and shear mix for 20 minutes at a shear rate of 2000rpm; then add 4 parts of vinyltrimethoxysilane silicon and 100 parts of corundum, stir and mix for 30 minutes at a stirring rate of 300rpm to obtain an active repair agent for road network cracks.

[0041] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 20wt% and a mass ratio of 1:2 is then evenly sprayed at 2kg / m 2 Active repair agent until the cracks are full, then spray 0.1kg / m 2 The concentration of the suspension is 20wt%. After the network cracks are repaired, traffic can be opened.

[0042] Comparative Example 1

[0043] The suspension of calcium hydroxide and calcium silicate was not sprayed in Example 1, and the other conditions remained unchanged.

[0044] Comparative Example 2

[0045] The active diluent in Example 1 was replaced with 180# solvent oil, and the suspension of calcium hydroxide and calcium silicate was not sprayed, while the other conditions remained unchanged.

[0046] Effect comparison

[0047] Table 1 Comparison of performance indicators of road network crack repair agents

[0048]

[0049] As shown in Table 1, the active repair agent prepared in Examples 1-4 has a shorter final setting time and higher tensile strength than Comparative Examples 1-2, and its water permeability and friction performance are also better than Comparative Examples 1-2. The active repair agent of the present invention has the characteristics of strong permeability and fast strength formation, and traffic can be opened after the crack repair is completed.

[0050] Example 5

[0051] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0052] 10 parts of glucose, 3 parts of xylitol, 20 parts of nadic anhydride and 6 parts of phthalate are added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 130°C for 30 minutes; then 0.5 parts of p-toluenesulfonic acid catalyst and a mixture of 2 parts of myristic acid and 6 parts of lauric acid are added to carry out a second reaction at a temperature of 150°C for 4 hours; finally, low molecular weight products and unreacted monomers are removed by reduced pressure distillation at a pressure of 20 kPa to obtain an active diluent.

[0053] Heat 25 parts of polyethylene modified asphalt to 120°C, add 15 parts of deketoxime type silicone rubber toughening agent and 35 parts of active diluent in sequence, and shear mix for 30 minutes at a shear rate of 3000 rpm; then add 5 parts of vinyl trimethoxy silane and 100 parts of corundum, stir and mix for 40 minutes at a stirring rate of 500 rpm to obtain an active repair agent for road network cracks.

[0054] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 15wt% and a mass ratio of 1:1 is evenly sprayed at 3.5kg / m 2 Active repair agent until the cracks are full, then spray 0.2kg / m 2 The concentration of the suspension is 15wt%. After the network cracks are repaired, traffic can be opened.

[0055] Example 6

[0056] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0057] 15 parts of sorbitol, 25 parts of alkenyl succinic anhydride and 10 parts of phthalate are added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 128°C for 40 minutes; then a mixture of 0.7 parts of p-toluenesulfonic acid catalyst and 6 parts of lauric acid is added to carry out a second reaction at a temperature of 148°C for 2.8 hours; finally, low molecular weight products and unreacted monomers are removed by reduced pressure distillation at a pressure of 18 kPa to obtain an active diluent.

[0058] 10 parts of polyethylene modified asphalt and 15 parts of EVA modified asphalt were mixed and heated to 120°C, and 17 parts of deketoxime type silicone rubber toughening agent and 35 parts of active diluent were added in sequence, and shear mixed for 30 minutes at a shear rate of 3000 rpm; then 6 parts of vinyl trimethoxy silane and 100 parts of corundum were added, and stirred and mixed for 40 minutes at a stirring rate of 500 rpm to obtain an active repair agent for road network cracks.

[0059] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 25wt% and a mass ratio of 1:2 is then evenly sprayed at 3kg / m 2 Active repair agent until the cracks are full, then spray 0.2kg / m 2 The concentration of the suspension is 25wt%. After the network cracks are repaired, traffic can be opened.

[0060] Example 7

[0061] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0062] 12 parts of glucose, 20 parts of nadic anhydride, 10 parts of alkenyl succinic anhydride and 7 parts of phthalate were added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 120°C for 40 minutes. Then, a mixture of 0.7 parts of p-toluenesulfonic acid catalyst and 6 parts of lauric acid was added to carry out a second reaction at a temperature of 155°C for 3 hours. Finally, low molecular weight products and unreacted monomers were removed by reduced pressure distillation at a pressure of 18 kPa to obtain an active diluent.

[0063] Heat 25 parts of polyethylene modified asphalt to 130°C, add 10 parts of deketoxime type silicone adhesive toughening agent, 10 parts of deamidation type silicone adhesive and 35 parts of active diluent in sequence, and shear mix for 30 minutes at a shear rate of 3000 rpm; then add 6 parts of vinyl trimethoxy silane and 100 parts of corundum, stir and mix for 40 minutes at a stirring rate of 500 rpm to obtain an active repair agent for road network cracks.

[0064] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 10wt% and a mass ratio of 1:3 is evenly sprayed at 3kg / m 2 Active repair agent until the cracks are full, then spray 0.2kg / m 2 The concentration of the suspension is 10wt%. After the network cracks are repaired, traffic can be opened.

[0065] Example 8

[0066] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0067] 10 parts of glucose, 30 parts of nadic anhydride and 10 parts of phthalate are added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 128°C for 40 minutes; then a mixture of 0.5 parts of p-toluenesulfonic acid catalyst and 5 parts of lauric acid is added to carry out a second reaction at a temperature of 148°C for 2.8 hours; finally, low molecular weight products and unreacted monomers are removed by reduced pressure distillation at a pressure of 18 kPa to obtain an active diluent.

[0068] Heat 22 parts of polyethylene modified asphalt to 120°C, add 17 parts of deketoxime type silicone adhesive toughening agent and 35 parts of active diluent in sequence, and shear mix for 30 minutes at a shear rate of 3000rpm; then add 6 parts of vinyltrimethoxysilane, 80 parts of corundum and 80 parts of 20 quartz sand, stir and mix for 40 minutes at a stirring rate of 500rpm to obtain an active repair agent for road network cracks.

[0069] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.2kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 20wt% and a mass ratio of 1:2 is then evenly sprayed at 2.5kg / m 2 Active repair agent until the cracks are full, then spray 0.05kg / m 2 The concentration of the suspension is 20wt%. After the network cracks are repaired, traffic can be opened.

[0070] Example 9

[0071] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0072] 10 parts of sorbitol, 3 parts of glucose, 20 parts of alkenyl succinic anhydride and 6 parts of phthalate were added into a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 135°C for 1 hour; then a mixture of 0.8 parts of p-toluenesulfonic acid and 0.2 parts of trifluoromethanesulfonic acid catalyst and 6 parts of lauric acid was added to carry out a second reaction at a temperature of 148°C for 2.8 hours; finally, low molecular weight products and unreacted monomers were removed by reduced pressure distillation at a pressure of 18 kPa to obtain an active diluent.

[0073] Heat 28 parts of polyethylene modified asphalt to 120°C, add 17 parts of deketoxime type silicone rubber toughening agent and 35 parts of active diluent in sequence, and shear mix for 30 minutes at a shear rate of 3000 rpm; then add 6 parts of vinyl trimethoxy silane and 100 parts of corundum, stir and mix for 40 minutes at a stirring rate of 500 rpm to obtain an active repair agent for road network cracks.

[0074] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 30wt% and a mass ratio of 1:2 is then evenly sprayed at 3kg / m 2 Active repair agent until the cracks are full, then spray 0.2kg / m 2 The concentration of the suspension is 30wt%. After the network cracks are repaired, traffic can be opened.

[0075] Example 10

[0076] An active repair agent for road network cracks, the preparation method of which comprises the following steps:

[0077] 15 parts of glucose, 20 parts of nadic anhydride and 10 parts of phthalate are added to a glass reactor equipped with a stirrer, a thermometer and a condenser to carry out a first reaction at a temperature of 120°C for 40 minutes; then a mixture of 0.7 parts of p-toluenesulfonic acid catalyst and 6 parts of lauric acid is added to carry out a second reaction at a temperature of 140°C for 3 hours; finally, low molecular weight products and unreacted monomers are removed by reduced pressure distillation at a pressure of 18 kPa to obtain an active diluent.

[0078] Heat 25 parts of polyethylene modified asphalt to 120°C, add 17 parts of deketoxime type silicone rubber toughening agent and 35 parts of active diluent in sequence, and shear mix for 30 minutes at a shear rate of 3000 rpm; then add 6 parts of vinyl trimethoxy silane and 100 parts of corundum, stir and mix for 40 minutes at a stirring rate of 500 rpm to obtain an active repair agent for road network cracks.

[0079] Blow the cracked road surface until there is no dust on the surface and in the cracks. First spray 0.1kg / m 2 A suspension of calcium hydroxide and calcium silicate with a concentration of 20wt% and a mass ratio of 1:2 is then evenly sprayed at 3kg / m 2 Active repair agent until the cracks are full, then spray 0.2kg / m 2 The concentration of the suspension is 20wt%. After the network cracks are repaired, traffic can be opened.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active repair agent for road network cracks, characterized in that: The invention comprises component A and component B, wherein the component A comprises the following raw materials in parts by weight: 20-40 parts of active diluent, 20-30 parts of modified asphalt, 10-30 parts of toughening agent, 4-8 parts of silane coupling agent and 100 parts of filler; and the component B is a curing agent solution.

2. The active repair agent for road network cracks according to claim 1, characterized in that: The active diluent comprises the following raw materials in parts by mass: 10-15 parts of polyhydroxy compounds, 5-8 parts of saturated fatty acids, 20-30 parts of organic anhydrides, 6-10 parts of phthalates and 0.5-1 parts of catalysts.

3. The active repair agent for road cracks according to claim 2, characterized in that: The polyhydroxy compound is one or more of sorbitol, xylitol or glucose; the saturated fatty acid is lauric acid and / or myristic acid; the organic acid anhydride is nadic anhydride and / or alkenyl succinic anhydride; and the catalyst is p-toluenesulfonic acid and / or trifluoromethanesulfonic acid.

4. The active repair agent for road cracks according to claim 3, characterized in that: The synthesis method of the active diluent comprises: mixing polyhydroxy compounds, organic anhydrides and phthalates to carry out a first reaction; then adding a mixture of a catalyst and saturated fatty acids to carry out a second reaction; and finally performing reduced pressure distillation to obtain the active diluent.

5. The active repair agent for road network cracks according to claim 4, characterized in that: The first reaction temperature is 120-140°C, and the time is 0.5-1h; the second reaction temperature is 140-160°C, and the time is 2-4h; and the reduced pressure distillation pressure is 10-20kPa.

6. The active repair agent for road network cracks according to any one of claims 1 to 5, characterized in that: The modified asphalt is polyethylene modified asphalt or / and EVA modified asphalt; the toughening agent is deketoxime type silicone rubber or / and deamidation type silicone rubber.

7. The active repair agent for road network cracks according to claim 6, characterized in that: The silane coupling agent is vinyl trimethoxy silane and / or amino silane; the filler is corundum and / or quartz sand.

8. The active repair agent for road cracks according to claim 7, characterized in that: The curing agent solution is a suspension of calcium hydroxide and calcium silicate, the concentration of the suspension is 10-30wt%, and the mass ratio of calcium hydroxide to calcium silicate is 1:(1-3).

9. The method for preparing the active repair agent for road network cracks according to any one of claims 1 to 8, characterized in that: The preparation of component A includes the following steps: heating the modified asphalt to 110-130° C., adding a toughening agent and an active diluent in sequence, and shearing and mixing; then adding a silane coupling agent and a filler, and stirring and mixing.

10. The method for applying the active repair agent for road network cracks according to any one of claims 1 to 8, characterized in that: Blow the cracked road surface until there is no dust on the surface and in the cracks, spray component B first, then evenly spray or scrape component A until the cracks are full, and then spray component B; the amount of component B is 0.2-0.3kg / m 2 ; The dosage of component A is 2-5kg / m 2 .

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