Asphalt mixture as well as construction process and application thereof

Abstract

The invention discloses an asphalt mixture and a construction process and application thereof, and belongs to the technical field of road engineering materials, and the asphalt mixture comprises aggregate, asphalt, fiber, cement, water, an ethanol water solution and an anti-stripping agent. The construction process mainly comprises the following steps: mixing the aggregate with the fiber to obtain a mineral aggregate; the method comprises the following steps: dissolving an anti-stripping agent in an ethanol aqueous solution to prepare a spraying solution, and carrying out atomized spraying, stirring and standing on the mineral aggregate to obtain a pretreated mineral aggregate; and then premixing the pretreated mineral aggregate with cement and water, then spraying asphalt, paving, standing, rolling and carrying out short-term maintenance, and then molding. Compared with the prior art, the adhesion of the asphalt and the aggregate is remarkably improved, and the mixture has excellent early water damage resistance and rapid forming strength, so that traffic can be opened in a short time, and the mixture is particularly suitable for night road maintenance engineering.

Description

Technical Field

[0001] This invention relates to the field of road engineering materials technology, and in particular to an asphalt mixture and its construction process and application. Background Technology

[0002] In road maintenance projects, minimizing the impact on daytime traffic and enabling rapid reopening has become an urgent need. This places extremely high performance requirements on the asphalt mixtures used in this scenario. The mixtures must possess rapid setting and early high strength characteristics to form sufficient load-bearing capacity within a short curing period; simultaneously, they must have excellent resistance to water damage to resist erosion from nighttime condensation or sudden rainfall, ensuring pavement durability. Micro-surfacing technology, as an effective preventative maintenance method, relies on a cold-mix, cold-laying process using modified emulsified asphalt. However, when applied to rapid nighttime reopening scenarios, the demulsification rate of the emulsified asphalt, the fiber reinforcement effect, and the early strength development of the mixture must be precisely optimized and coordinated to overcome the challenges posed by low temperatures and short curing times.

[0003] Existing technologies have explored this area extensively. For example, CN120518367A discloses an emulsified asphalt cold-mix asphalt pavement material, which enables room-temperature construction. However, its design focuses on replacing hot-mix asphalt and meeting conventional long-term performance indicators, without specifically optimizing for the extremely early strength and water damage resistance required for rapid nighttime traffic opening. CN113150566A provides a high melt index and high modulus asphalt mixture additive, aiming to improve the high and low temperature performance of asphalt mixtures. However, this technology relies on the hot-mix process and cannot meet the needs of cold nighttime construction and rapid traffic opening. In addition, CN118479795A discloses a fiber-free low-carbon SMA asphalt mixture, which reduces the mixing temperature and eliminates fibers through surfactant compounding. However, its technical approach differs significantly from micro-surfacing technology, and in order to achieve low carbon and fiber-free properties, it may sacrifice the early toughness and crack resistance of the mixture, especially the thin overlay required for crack resistance.

[0004] In summary, existing technologies are either limited to hot-mix processes, failing to meet the requirements of cold-mix construction at night; or, while employing cold-mix processes, their material design and performance objectives do not focus on addressing the core contradiction of slow strength gain and susceptibility to moisture erosion in low-temperature nighttime environments. Therefore, there is an urgent need to develop a new type of high-performance micro-surfacing asphalt mixture that can significantly improve the early cohesion and water damage resistance of the mixture without relying on heating, through innovative material proportioning and modification processes, thereby truly achieving the engineering goals of nighttime construction and rapid traffic reopening. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention aims to provide an asphalt mixture suitable for nighttime construction and rapid traffic opening, as well as its construction process and application.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: An asphalt mixture comprises the following components in parts by weight: 80-120 parts basalt aggregate, 0.1-0.3 parts basalt fiber, 5-10 parts cement, 10-15 parts SBS modified emulsified asphalt, 0.5-2 parts water, 0.1-0.5 parts anti-stripping agent and 2-3 parts ethanol aqueous solution.

[0007] The construction process of the asphalt mixture is as follows, in parts by weight: S1. Weigh basalt aggregate, basalt fiber, cement, SBS modified emulsified asphalt, water, anti-stripping agent and ethanol aqueous solution, and preliminarily mix basalt aggregate and basalt fiber to obtain mineral aggregate; S2. Mix the anti-stripping agent with an ethanol-water solution to obtain a spraying liquid; spread the aggregate into a 10-30cm thick layer, atomize and spray, stir and let stand to obtain sprayed aggregate; mix the sprayed aggregate, cement and water to obtain a pre-wetted mixture; spray SBS modified emulsified asphalt, and control the paving thickness to 5-10mm. S3. Under conditions of 20-27℃, after paving is completed, let it stand for 5-10 minutes before compaction. After compaction, cure at 20℃ or above for 20-30 minutes to obtain asphalt mixture.

[0008] The compaction is carried out by using a 20-28t rubber-tired roller for 1-3 passes at a speed of 5-8 km / h.

[0009] Preferably, step S2 can also be performed using the following method, measured in parts by weight: S2. First, add 0.04-0.08 parts of acetic acid to 2-3 parts of ethanol aqueous solution and stir for 20-40 seconds. Then add 0.1-0.5 parts of anti-stripping agent and mix to obtain the spraying liquid. Spread the aggregate into a 10-30cm thick layer, atomize and spray, stir and let stand to obtain the sprayed aggregate. Mix the sprayed aggregate, cement and water to obtain the pre-wetted mixture. Spray SBS modified emulsified asphalt and control the paving thickness to 5-10mm.

[0010] The mixing and settling process involves mixing once every 15-25 seconds after spraying, with a total mixing time of 40-80 seconds and a settling time of 500-800 seconds.

[0011] More preferably, step S2 can also be performed using the following method, in parts by weight: S2. First, add 0.04-0.08 parts of acetic acid to 2-3 parts of ethanol aqueous solution and stir for 20-40 seconds. Then add 0.1-0.5 parts of anti-stripping agent and mix to obtain the spraying liquid. Spread the aggregate into a 10-30cm thick layer and atomize it. Spread 0.1-0.3 parts of quicklime powder evenly on the aggregate mixed with the spraying liquid. Turn the aggregate over once every 15-25 seconds, for a total turning time of 40-80 seconds. Cover the aggregate pile tightly with plastic film and let it stand for 500-800 seconds to obtain the sprayed aggregate. Mix the sprayed aggregate, cement, and water to obtain the pre-wetted mixture. Spray SBS modified emulsified asphalt and control the paving thickness to be 5-10mm.

[0012] The atomized spraying is performed with the nozzle 20-40cm away from the material surface.

[0013] The anti-stripping agent is at least one of tallow-based primary amine, oleamide, 2-undecylimidazoline, dodecylamine polyoxyethylene (5) ether, tallow-based dihydroxyethylamine oxide, and hexadecyltrimethylammonium chloride.

[0014] Preferably, the anti-stripping agent is composed of 2-undecylimidazoline and dodecylamine polyoxyethylene (5) ether in a mass ratio of 0.5-2:0.5-2.

[0015] The asphalt mixture is used for nighttime maintenance of urban main roads, highways and expressways, and can be quickly reopened to traffic after a short period of maintenance.

[0016] To address the challenges of strong surface polarity and slow asphalt adhesion formation at low nighttime temperatures in basalt aggregates, this invention designs a two-component synergistic system with strong adsorption and high wetting. 2-Undecylimidazoline, with its highly polar cyclic structure, is selected as the primary anchoring agent to provide high-strength interfacial chemical bonding. Long-chain dodecylamine polyoxyethylene (5) ether is introduced as a wetting aid, utilizing its low surface tension to drive active molecules to penetrate deep into the micropores and textures of the aggregate. The two components complement each other, overcoming the defects of uneven coverage or weak bonding of single components, constructing a dense and continuous cationic oleophilic layer on the aggregate surface, laying a microscopic foundation for the firm adhesion of the asphalt film.

[0017] To address the bottleneck of long-chain organic amines' difficulty in dispersion and easy aggregation in aqueous systems, this invention further employs a pretreatment approach involving acidification, protonation, and an ethanol carrier. By introducing acetic acid, the anti-stripping agent is converted into more water-soluble amine salt micelles. Utilizing the high volatility and easy spreading properties of ethanol solvent, atomized spraying and mixing processes are implemented. This design allows the anti-stripping agent to preferentially occupy the active sites of the aggregate before asphalt, achieving molecular-level modification of the aggregate surface. This avoids interference with the stability of emulsified asphalt from direct additive addition and utilizes the solvent's volatility to prevent negative impacts on subsequent road performance, ensuring uniform and controllable modification effects.

[0018] To further address the pain points of slow moisture evaporation and sluggish strength development during nighttime construction, a strengthening pathway involving quicklime activation and curing was designed. The CaO hydration reaction rapidly consumes free water on the aggregate surface and releases heat, creating a microenvironment for rapid emulsion demulsification. Simultaneously, the strongly alkaline environment generated by hydration induces deprotonation of adsorbed amine salts at the aggregate interface, causing them to in situ invert into insoluble hydrophobic free amines that are firmly locked at the interface. Combined with the film curing process, this reduces external interference and accelerates molecular penetration, ultimately achieving a rapid increase in the early-stage cohesion of the mixture, meeting the engineering requirements for opening to traffic after short curing periods.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects: 1) This invention constructs a highly dense anti-stripping hydrophobic film on the surface of aggregates by compounding anti-stripping agents and acid pre-spraying process, which effectively blocks the intrusion of water molecules, reduces the early wet wheel wear value, and greatly improves the durability of the road surface in a wet environment.

[0020] 2) This invention utilizes the water absorption and heat release of quicklime and the interfacial locking effect of anti-stripping agent to significantly accelerate emulsion demulsification and strength establishment, improve the early cohesion of asphalt mixture, and solve the problem of traffic delay caused by slow evaporation of moisture at low temperatures at night.

[0021] 3) The process of this invention allows active molecules to penetrate deep into the micropores of the aggregate, and combined with the high-viscosity asphalt network, it greatly enhances the mechanical interlocking force between the asphalt and the aggregate, effectively solving the problem of particle loss caused by the smooth surface of basalt.

[0022] 4) This invention significantly improves the early strength and water damage resistance of the mixture by optimizing the synergistic ratio of emulsified asphalt and cement and using anti-stripping agent to pretreat the aggregate; combined with discontinuous gradation design and fiber reinforcement, it effectively reduces driving noise and enhances the anti-skid and durability of the road surface; the use of rubber-tired rolling technology during construction accelerates the drainage of moisture and the formation of strength, enabling traffic to be opened within 30 minutes after nighttime construction, significantly improving maintenance efficiency. Detailed Implementation

[0023] Some material parameters and their sources: The basalt aggregate contains 20% by mass of particles with a diameter of 0-3mm and 80% by mass of particles with a diameter of 3-5mm. Basalt fiber, 10mm in length, tensile strength >1050MPa, elongation at break <3.5%.

[0024] SBS modified emulsified asphalt, grade 90#, penetration: 70mm, elongation: 150cm, softening point: 45.5℃, flash point: 185.5℃, Hebei Henghaoda Highway Engineering Co., Ltd. SBS modified emulsified asphalt The cement used is PO 42.5 ordinary Portland cement.

[0025] In the embodiments and comparative examples of this invention, all raw materials are commercially available products. Example 1

[0026] The construction process for an asphalt mixture is as follows, in parts by weight: S1. Weigh 100 parts basalt aggregate, 0.2 parts basalt fiber, 7 parts cement, 12 parts SBS modified emulsified asphalt, 1 part water, 0.3 parts anti-stripping agent and 2.7 parts ethanol aqueous solution with a concentration of 60wt%; preliminarily mix the basalt aggregate and basalt fiber to obtain the mineral aggregate; S2. Mix the anti-stripping agent with an ethanol-water solution to obtain a spraying liquid; spread the aggregate into a 20cm thick layer, atomize and spray with the nozzle 30cm away from the surface, and repeat the cycle of mixing every 20 seconds for a total mixing time of 60 seconds. Let it stand for 600 seconds to obtain the sprayed aggregate; mix the sprayed aggregate, cement, and water to obtain a pre-wetted mixture; spray SBS modified emulsified asphalt, controlling the paving thickness to 8mm; S3. Under 25℃ conditions, after paving is completed and left to stand for 8 minutes, compaction is carried out. A 26t rubber-tired roller is used for one pass, with a compaction speed of 6km / h. After compaction, the mixture is cured at 25℃ for 30 minutes to obtain asphalt mixture.

[0027] The anti-stripping agent is tallow-based primary amine. Example 2

[0028] The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is oleic acid amide. Example 3

[0029] The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is 2-undecylimidazoline. Example 4

[0030] The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is dodecylamine polyoxyethylene (5) ether. Example 5

[0031] The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is tallow-based dihydroxyethylamine oxide. Example 6

[0032] The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is hexadecyltrimethylammonium chloride. Example 7

[0033] The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is composed of 2-undecylimidazoline and dodecylamine polyoxyethylene (5) ether in a mass ratio of 1:1. Example 8

[0034] The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is composed of oleic acid amide and 2-undecylimidazoline in a mass ratio of 1:1. Example 9

[0035] The construction process of an asphalt mixture is basically the same as that in Example 7, except that the method of step S2 is different.

[0036] S2. First, add 0.06 parts of acetic acid to 2.7 parts of 60wt% ethanol aqueous solution and stir for 30 seconds. Then add 0.3 parts of anti-stripping agent and mix to obtain the spraying liquid. Spread the aggregate into a 20cm thick layer, atomize and spray from a nozzle 30cm away from the surface, and repeat the cycle of spraying and stirring every 20 seconds for a total stirring time of 60 seconds. Let it stand for 600 seconds to obtain the sprayed aggregate. Mix the sprayed aggregate, cement, and water to obtain the pre-wetted mixture. Spray SBS modified emulsified asphalt and control the paving thickness to 8mm. The anti-stripping agent is the same as in Example 7. Example 10

[0037] The construction process of an asphalt mixture is basically the same as that in Example 9, except that the method of step S2 is different.

[0038] S2. First, add 0.06 parts of acetic acid to 2.7 parts of 60wt% ethanol aqueous solution and stir for 30 seconds. Then add 0.3 parts of anti-stripping agent and mix to obtain the spraying liquid. Spread the aggregate into a 20cm thick layer. Atomize and spray the spraying liquid from a nozzle 30cm away from the surface of the aggregate. Evenly sprinkle 0.2 parts of quicklime powder into the aggregate mixed with the spraying liquid. Repeat the cycle of spraying and stirring every 20 seconds, for a total stirring time of 60 seconds. Cover the aggregate pile tightly with plastic film and let it stand for 600 seconds to obtain the sprayed aggregate. Mix the sprayed aggregate, cement, and water to obtain the pre-wetted mixture. Spray SBS modified emulsified asphalt and control the paving thickness to 8mm.

[0039] The anti-stripping agent is the same as in Example 7.

[0040] Comparative Example 1 The construction process of an asphalt mixture is basically the same as that in Example 1, except that the anti-stripping agent is replaced with an equal amount of water.

[0041] Test Example 1 Early immersion wet wheel wear test: Early wet tire wear reflects the early resistance to water damage and the ability to quickly open to traffic. This index mainly examines the abrasion resistance of the mixture after it comes into contact with water in the early stages of its formation. The lower the value, the more tightly the asphalt and aggregate are bonded in a short time, the faster the anti-stripping agent takes effect, and the more suitable it is for nighttime construction and rapid opening.

[0042] Test standard: Refer to method T0752 in the "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011).

[0043] Test conditions: Asphalt mixtures prepared in the embodiments and comparative examples of this invention were sampled and immediately immersed in water at 25°C for 1 hour, then abraded using a wet wheel abrasion tester for 300 seconds. Unit: g / m³ 2 (Wearing loss).

[0044] Each group was tested three times, and the average value was taken. The test results are shown in Table 1.

[0045] Table 1 Experimental protocol <![CDATA[Wear loss (g / m 2 )]]> Example 1 355.4 Example 2 368.2 Example 3 312.5 Example 4 338.7 Example 5 342.1 Example 6 325.6 Example 7 236.4 Example 8 328.9 Example 9 182.3 Example 10 115.8 Comparative Example 1 442.6 Test Example 2 Early cohesion test: Test objective: To detect the setting rate and early strength of the asphalt mixture. Vehicles are permitted to pass only when the cohesion reaches a certain standard (usually >1.2 N·m). Standard followed: Refer to method T 0754 in the "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering" JTG E20-2011.

[0046] Samples of the asphalt mixtures prepared in the embodiments and comparative examples of this invention were taken and cured at 25°C for 30 minutes. The torque required to break the test specimen was measured using a cohesion tester. The unit of evaluation is N·m (Newton-meter). A higher value indicates faster molding and higher strength.

[0047] Each group was tested three times, and the average value was taken. The relevant test data are summarized in Table 2.

[0048] Table 2 Experimental protocol Cohesion (N•m) Example 1 1.3 Example 2 1.3 Example 3 1.4 Example 4 1.3 Example 5 1.3 Example 6 1.4 Example 7 1.7 Example 8 1.4 Example 9 1.9 Example 10 2.3 Comparative Example 1 1.0 Anti-stripping agents can establish a more stable interfacial affinity layer between aggregates and asphalt, reducing water's competitive occupation of the interface. Organic adhesive anti-stripping agents, represented by amines, imidazolines, amine polyoxyethylene ethers, and quaternary ammonium salts, typically possess a polar or positively charged mineralophilic group at one end, allowing preferential adsorption onto negatively charged or silicate-rich surfaces such as basalt; the other end is a long-chain hydrocarbon or hydrophobic segment, exhibiting better compatibility with asphalt and enabling a tighter bond between the asphalt cementitious structure and the aggregate. This reduces the chance of water film entering the interface and improves the early-stage cohesion and shear resistance, resulting in less loss during water immersion abrasion and maintaining higher cohesion even under short-term curing conditions, better meeting the needs of rapid nighttime traffic opening.

[0049] The synergistic mechanism of Example 7 lies in the compounding of strongly adsorbing 2-undecylimidazoline with dodecylamine polyoxyethylene (5) ether, which has good wetting and dispersing capabilities. Basalt surfaces are highly polar and easily form water films. While 2-undecylimidazoline alone adsorbs strongly, its spreadability in the aqueous phase is limited, easily leading to insufficient local coverage. Although dodecylamine polyoxyethylene (5) ether alone wets quickly, its anchoring strength at the interface is not as strong as that of 2-undecylimidazoline. After compounding, dodecylamine polyoxyethylene (5) first improves the dispersion in the aqueous phase and the wetting and penetration into rough surfaces, allowing active molecules to reach the aggregate micropores and edges more uniformly. 2-undecylimidazoline then forms a more stable directional adsorption layer at these locations, improving the adhesion of asphalt to the aggregate. Therefore, wet wheel wear is significantly reduced and early cohesion is improved.

[0050] In Example 9, the addition of acetic acid primarily improved the form of the anti-stripping agent in the ethanol-water system and its adsorption efficiency at the aggregate interface. Acetic acid protonated the imidazoline and amine groups to a certain extent, transforming the system from a state prone to oil spots and agglomeration to a more uniform dissolved or micromicelle dispersed state. This resulted in more continuous spreading on the mineral surface after spraying, reducing local over- or under-application. Simultaneously, the protonated cationic groups more readily electrostatically adsorbed onto the negative potential points on the basalt surface, leading to a faster adsorption rate and the formation of a more complete interfacial protective layer in the early stages. Therefore, under the same curing conditions, the interface was less likely to be reoccupied by water after early immersion, further reducing wet wheel wear and driving a continued increase in cohesion.

[0051] Example 10 introduces quicklime onto an acid-sprayed substrate and covers it with a thin film for static deposition, creating a combined effect of hydration water absorption and exothermic reaction, alkali reversal and locking, and material curing to promote penetration. CaO reacts with water to generate Ca(OH)2, releasing heat. On one hand, this rapidly consumes free water on the aggregate surface, shortens the water film's duration, and promotes emulsification and early strength development in the emulsified asphalt. On the other hand, the strongly alkaline environment causes the adsorbed amine salts to deprotonate, transforming them in situ into hydrophobic free amines that reside more firmly at the aggregate interface, achieving a phase change from easy dispersion and adsorption to difficult-to-dissolve and locked-in state. The film curing reduces solvent evaporation and moisture fluctuations, and under the influence of temperature rise and steam, promotes molecular penetration into micropores and interfacial rearrangement, ultimately resulting in a more water-resistant interfacial film layer, significantly reducing early water loss.

Claims

1. An asphalt mixture, characterized in that, It includes the following components by weight: 80-120 parts basalt aggregate, 0.1-0.3 parts basalt fiber, 5-10 parts cement, 10-15 parts SBS modified emulsified asphalt, 0.5-2 parts water, 0.1-0.5 parts anti-stripping agent and 2-3 parts ethanol aqueous solution.

2. A construction process for the asphalt mixture as described in claim 1, characterized in that, The method is as follows: S1. Weigh basalt aggregate, basalt fiber, cement, SBS modified emulsified asphalt, water, anti-stripping agent and ethanol aqueous solution, and preliminarily mix basalt aggregate and basalt fiber to obtain mineral aggregate; S2. Mix the anti-stripping agent with an ethanol-water solution to obtain a spraying liquid; spread the aggregate into a 10-30cm thick layer, atomize and spray, stir and let stand to obtain sprayed aggregate; mix the sprayed aggregate, cement and water to obtain a pre-wetted mixture; spray SBS modified emulsified asphalt, and control the paving thickness to 5-10mm. S3. Under conditions of 20-27℃, after paving is completed, let it stand for 5-10 minutes before compaction. After compaction, cure at 20℃ or above for 20-30 minutes to obtain asphalt mixture.

3. The construction process as described in claim 2, characterized in that, The compaction is carried out by using a 20-28t rubber-tired roller for 1-3 passes at a speed of 5-8 km / h.

4. The construction process as described in claim 2, characterized in that, Step S2 can also be performed using the following method, in parts by weight: S2. First, add 0.04-0.08 parts of acetic acid to 2-3 parts of ethanol aqueous solution and stir for 20-40 seconds. Then add 0.1-0.5 parts of anti-stripping agent and mix to obtain the spraying liquid. Spread the aggregate into a 10-30cm thick layer, atomize and spray, stir and let stand to obtain the sprayed aggregate. Mix the sprayed aggregate, cement and water to obtain the pre-wetted mixture. Spray SBS modified emulsified asphalt and control the paving thickness to 5-10mm.

5. The construction process as described in claim 2 or 4, characterized in that, The mixing and settling process involves mixing once every 15-25 seconds after spraying, with a total mixing time of 40-80 seconds and a settling time of 500-800 seconds.

6. The construction process as described in claim 2, characterized in that, Step S2 can also be performed using the following method, in parts by weight: S2. First, add 0.04-0.08 parts of acetic acid to 2-3 parts of ethanol aqueous solution and stir for 20-40 seconds. Then add 0.1-0.5 parts of anti-stripping agent and mix to obtain the spraying liquid. Spread the aggregate into a 10-30cm thick layer and atomize it. Spread 0.1-0.3 parts of quicklime powder evenly on the aggregate mixed with the spraying liquid. Turn the aggregate over once every 15-25 seconds, for a total turning time of 40-80 seconds. Cover the aggregate pile tightly with plastic film and let it stand for 500-800 seconds to obtain the sprayed aggregate. Mix the sprayed aggregate, cement, and water to obtain the pre-wetted mixture. Spray SBS modified emulsified asphalt and control the paving thickness to be 5-10mm.

7. The construction process as described in any one of claims 2, 4, or 6, characterized in that, The atomized spraying is performed with the nozzle 20-40cm away from the material surface.

8. The construction process as described in any one of claims 2, 4, or 6, characterized in that, The anti-stripping agent is at least one of tallow-based primary amine, oleamide, 2-undecylimidazoline, dodecylamine polyoxyethylene (5) ether, tallow-based dihydroxyethylamine oxide, and hexadecyltrimethylammonium chloride.

9. The construction process as described in any one of claims 2, 4, or 6, characterized in that, The anti-stripping agent is composed of 2-undecylimidazoline and dodecylamine polyoxyethylene (5) ether in a mass ratio of 0.5-2:0.5-2.

10. An application of the asphalt mixture as described in claim 1, characterized in that, Used for nighttime maintenance work on urban main roads, highways and expressways, it can quickly open to traffic after a short period of maintenance.