Ultraviolet curing asphalt slurry seal material

Abstract

The invention belongs to the technical field of pavement maintenance materials, and particularly relates to an ultraviolet curing asphalt slurry seal material. The paint is prepared from the following components in parts by weight: 20-33 parts of decolorized asphalt, 2-8 parts of an ultraviolet curing resin system, 4-8 parts of diesel oil and 58-72 parts of mineral powder, wherein the ultraviolet curing resin system is prepared from the following components in parts by weight: 50-65 parts of polyurethane acrylic resin, 30-45 parts of acryloylmorpholine, 0.8-3 parts of 1-hydroxycyclohexyl phenyl ketone and 0.6-2 parts of dimethylethanolamine. The ultraviolet curing asphalt slurry seal material can be rapidly cured under ultraviolet irradiation, a hard coating is generally formed within several minutes to ten minutes, and the construction time is remarkably shortened, so that the interference time of a construction site is greatly shortened, the traffic efficiency of a road is favorably improved, and the influence on traffic is reduced.

Description

A UV-curable asphalt slurry seal material Technical Field

[0001] This invention belongs to the technical field of road maintenance materials, and specifically relates to an ultraviolet light curing asphalt slurry seal material. Background Technology

[0002] With the acceleration of urbanization and the increase in motor vehicles, the frequency of use of transportation infrastructure has increased significantly, leading to cracks, potholes, and other defects in road surfaces. Effective road maintenance and repair technologies are receiving increasing attention to extend road lifespan and reduce reconstruction costs. Ultraviolet (UV) curing technology is a highly efficient curing method that rapidly induces a polymerization reaction through UV light irradiation. Compared to traditional curing methods, UV curing can quickly form a hard film within seconds, improving construction efficiency and reducing adverse effects caused by environmental factors. With advancements in materials science, the reliability and economy of UV curing technology have gradually improved, providing a new solution for road maintenance.

[0003] Applying UV curing technology to asphalt slurry seal materials can significantly improve their performance. By utilizing the characteristics of UV curing, the material hardens rapidly after application, reducing environmental impact and potential traffic disruptions during construction. Simultaneously, it improves the material's weather resistance and abrasion resistance, reducing maintenance frequency. In the context of increasingly stringent environmental regulations, the development of low-VOC (volatile organic compound) and solvent-free road seal materials has become a trend. UV-cured asphalt slurry seal materials, due to their low-pollution curing process, help reduce environmental impact and meet the needs of modern sustainable development. With the increasing demand for urban infrastructure construction and maintenance, UV-cured asphalt slurry seal materials have broad market prospects in road maintenance, bridge and other infrastructure repair. Their high efficiency, environmental friendliness, and durability give this material significant advantages in future applications. Summary of the Invention

[0004] The purpose of this invention is to provide a UV-curable asphalt slurry seal material that cures faster and has better weather resistance, wear resistance, and anti-skid properties compared to traditional slurry seal materials.

[0005] The technical solution adopted in this invention is:

[0006] A UV-curable asphalt slurry seal material, comprising the following components in parts by weight:

[0007] 20-33 parts of decolorized asphalt

[0008] 2-8 parts of UV-curable resin system

[0009] 4-8 parts diesel fuel

[0010] 58-72 parts of ore,

[0011] The UV-curable resin system is composed of the following components in parts by weight: 50-65 parts polyurethane acrylic resin, 30-45 parts acryloylmorpholine, 0.8-3 parts 1-hydroxycyclohexylphenyl ketone, and 0.6-2 parts dimethylethanolamine.

[0012] The ore is basalt with a particle size of 0.075-9.5 mm.

[0013] This invention also provides a method for preparing a UV-curable asphalt slurry seal material, comprising the following steps:

[0014] Step 1: Place polyurethane acrylate in a light-proof container, add acryloylmorpholine, 1-hydroxycyclohexylphenyl ketone, and dimethylethanolamine in sequence, and stir at room temperature for 10-20 minutes to obtain a UV-curable resin system.

[0015] Step 2: Add diesel fuel to a light-shielding container containing decolorized asphalt, shear at 140°C for 10 minutes, place the sheared mixture in an 80°C constant temperature chamber for 0.5 hours, then add the UV-cured resin system obtained in Step 1 to the light-shielding container, shear at 80°C for 10 minutes to obtain modified decolorized asphalt.

[0016] Step 3: Mix the mineral aggregate and modified decolorized asphalt in a light-proof container and stir for 2-4 minutes until a slurry state is reached, thus obtaining the UV-curable asphalt slurry seal material.

[0017] The basic principle of this invention is as follows: UV-curable asphalt slurry seal material contains a photoinitiator. When UV-curable asphalt slurry seal material is irradiated with ultraviolet light, it absorbs light energy and undergoes a chemical change. When the photoinitiator is activated, it releases free radicals, which initiate a polymerization reaction. Different polymer chains combine with each other to form a cross-linked network. This cross-linked network enhances the material's weather resistance, wear resistance, and skid resistance, achieving the purpose of rapid and high-strength road surface repair.

[0018] Compared with the prior art, the present invention has the following positive effects;

[0019] 1. UV-curable asphalt slurry seal material can be cured quickly under UV light, significantly reducing construction time.

[0020] 2. UV-cured asphalt slurry seal materials irradiated with ultraviolet light exhibit better weather resistance and can better resist the effects of external environmental factors such as ultraviolet radiation, humidity, and temperature changes. Compared with traditional slurry materials, they can maintain a longer service life and reduce maintenance frequency and repair costs.

[0021] 3. The UV-cured asphalt slurry seal material formed during the UV curing process has better wear resistance and anti-skid properties, providing a safer driving experience and reducing the risk of traffic accidents compared to traditional slurry materials. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0023] Example 1: A UV-curable asphalt slurry seal material, composed of the following components in parts by weight: 27 parts decolorized asphalt, 3 parts UV-curable resin system, 5.6 parts diesel oil, and 66 parts mineral aggregate. The UV-curable resin system is composed of the following components in parts by weight: 55 parts polyurethane acrylic resin, 45 parts acryloylmorpholine, 2 parts 1-hydroxycyclohexylphenyl ketone, and 1 part dimethylethanolamine.

[0024] A method for preparing a UV-curable asphalt slurry seal material includes the following steps:

[0025] Step 1: Place polyurethane acrylate in a light-shielding container, add acryloylmorpholine, 1-hydroxycyclohexylphenyl ketone, and dimethylethanolamine in sequence, and stir at room temperature for 15 minutes to obtain a UV-curable resin system.

[0026] Step 2: Add diesel fuel to a light-shielding container containing decolorized asphalt, shear at 140°C for 10 minutes, place the sheared mixture in an 80°C constant temperature chamber for 0.5 hours, then add the UV-cured resin system obtained in Step 1 to the light-shielding container, shear at 80°C for 10 minutes to obtain modified decolorized asphalt.

[0027] Step 3: Mix the aggregate and modified decolorized asphalt in a light-proof container and stir for 4 minutes until a slurry consistency is reached, obtaining the UV-curable asphalt slurry seal material. The aggregate particle size distribution is as follows: 9.5mm 100%, 4.75mm 78.3%, 2.36mm 61.5%, 1.18mm 41.3%, 0.6mm 28.3%, 0.3mm 20.5%, 0.15mm 15.6%, and 0.075mm 11.7%.

[0028] The UV-cured asphalt mixture prepared in Example 1 was subjected to a rutting deformation test according to the "Technical Guidelines for Micro-surfacing and Slurry Seal". The specific method was as follows: 500g of mixture was weighed and placed into a mold. The specimen was placed in an oven to constant weight. After drying, the width of the specimen (0.1mm) was recorded. The specimen was then placed on a 57.6kg load wheel tester and rolled 1000 times. The width was recorded again. The width deformation rate was calculated using the following formula.

[0029]

[0030] Where: PLD—mixture width deformation rate (%)

[0031] La — Width of the specimen before compaction (mm)

[0032] Lb — Width after time compression (mm)

[0033] Example 2: A UV-curable asphalt slurry seal material, composed of the following components in parts by weight: 31.5 parts decolorized asphalt, 3.5 parts UV-curable resin system, 5.6 parts diesel oil, and 77 parts mineral aggregate. The UV-curable resin system is composed of the following components in parts by weight: 55 parts polyurethane acrylic resin, 45 parts acrylamide, 2 parts 1-hydroxycyclohexylphenyl ketone, and 1 part dimethylethanolamine.

[0034] The preparation method of the UV-curable asphalt slurry seal material is the same as in Example 1.

[0035] A rutting deformation test was conducted on the slurry mixture of Example 2, and the test method was the same as that of Example 1. The test results are shown in Table 1.

[0036] Example 3: A UV-curable asphalt slurry seal material, composed of the following components in parts by weight: 36 parts decolorized asphalt, 4 parts UV-curable resin system, 5.6 parts diesel oil, and 88 parts mineral aggregate. The UV-curable resin system is composed of the following components in parts by weight: 55 parts polyurethane acrylic resin, 45 parts acryloylmorpholine, 2 parts 1-hydroxycyclohexylphenyl ketone, and 1 part dimethylethanolamine.

[0037] The preparation method of the UV-curable asphalt slurry seal material is the same as in Example 1.

[0038] A rutting deformation test was conducted on the slurry mixture of Example 3, and the test method was the same as that of Example 1. The test results are shown in Table 1.

[0039] Comparative example: Decolorized bitumen slurry seal material:

[0040] Add 5.6 parts of diesel fuel to a container containing 28 parts of decolorized asphalt. Heat the mixture at 140℃ and shear it in the container for 10 minutes using a magnetic stirrer. Place the sheared mixture in an 80℃ constant temperature oven for 0.5 hours to develop and cure, thus obtaining modified decolorized asphalt. Mix 66 parts of mineral aggregate and modified decolorized asphalt in a light-proof container. Place a paddle mixer in the light-proof container and stir for 4 minutes using the instrument's rotation method until a slurry state is reached, thus obtaining a slurry-state UV-cured asphalt mixture.

[0041] A rutting deformation test was conducted on the comparative example using the same method as in Example 1. The test results are shown in Table 1.

[0042] Table 1. Effects of UV-curable resin systems with different dosages on the rut width deformation rate of the mixture in the embodiments and comparative examples of the present invention.

[0043] Number | Wheel Track Width Deformation Rate (%) | Example 1 | 3.3 | Example 2 | 2.3 | Example 3 | 1.9 | Comparative Example 6.3 surface

[0044] As can be seen from the above experimental data, the rutting resistance of the material of the present invention can be changed by adjusting the mixing ratio of the UV-curable resin system. With the increase of polyurethane acrylate resin content in the UV-curable resin system, the number of active sites for photocuring reaction increases, and the rutting resistance of the UV-curable asphalt slurry seal material shows an upward trend. Under UV irradiation, more resin molecules can participate in the curing and cross-linking reaction, accelerating the formation of cross-linking network, so that it can reach a high strength within 10 minutes, providing a new option for the field of asphalt slurry seal materials.

[0045] The present invention has been described in detail above through embodiments, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of implementation of the embodiments of the present invention. The protection scope of the embodiments of the present invention is defined by the claims. Any technical solutions designed by those skilled in the art using the technical solutions described in the embodiments of the present invention, or designed by those skilled in the art under the inspiration of the technical solutions of the embodiments of the present invention, within the substance and protection scope of the embodiments of the present invention, to achieve the above-mentioned technical effects, or equivalent changes and improvements made to the scope of the application, should still fall within the patent protection scope of the embodiments of the present invention.

Claims

1. A UV-curable asphalt slurry seal material, characterized in that, It is composed of the following components in parts by weight: 20-40 parts of decolorized bitumen, 2-8 parts of UV-curable resin system, 4-8 parts of diesel oil, and 58-92 parts of mineral aggregate. The UV-curable resin system is composed of the following components in parts by weight: 50-65 parts of polyurethane acrylic resin, 30-45 parts of acryloylmorpholine, 0.8-3 parts of 1-hydroxycyclohexylphenyl ketone, and 0.6-2 parts of dimethylethanolamine.

2. The UV-curable asphalt slurry seal material according to claim 1, characterized in that, The ore is basalt with a particle size of 0.075-9.5 mm.

3. A method for preparing a UV-curable asphalt slurry seal material, characterized in that, Includes the following steps: Step 1: Place polyurethane acrylate in a light-shielded container, then add acrylamide morpholine, 1-hydroxycyclohexylphenyl ketone, and dimethylethanolamine sequentially. Stir at room temperature for 10-20 minutes to obtain a UV-curable resin system. Step 2: Add diesel fuel to a light-shielded container containing decolorized asphalt. Shear at 140°C for 10 minutes. Place the sheared mixture in an 80°C constant temperature chamber for 0.5 hours. Then add the UV-curable resin system obtained in Step 1 to the light-shielded container and shear at 80°C for 10 minutes to obtain modified decolorized asphalt. Step 3: Mix the aggregate and modified decolorized asphalt in a light-shielded container and stir for 2-4 minutes until a slurry consistency is reached, obtaining a UV-curable asphalt slurry seal material.

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