Asphalt repairing agent and preparation method thereof

Abstract

The invention discloses an asphalt repairing agent and a preparation method thereof. The asphalt repairing agent comprises the following raw materials in percentage by weight: 6% of machine-made sand, 80.38-80.48% of an asphalt mixture, 1.8% of an asphalt additive, 8% of-10 # diesel oil, 0.5% of an SBS asphalt stabilizer, 0.1% of a brightening agent, 0.1-0.2% of a curing agent, 0.02% of paraffin, 2% of heavy calcium powder and 1% of epoxy resin. Through cooperation of national standard 70a matrix asphalt and paraffin, cooperation of 90 # heavy rubber asphalt and heavy calcium powder, cooperation of an asphalt additive and an SBS asphalt stabilizer, and cooperation of a curing agent and-10 # diesel oil, the problems of poor sealing performance, poor wear resistance, poor pavement stability and long curing time are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of road pavement repair, in particular to an asphalt repair agent and a preparation method thereof. Background Art

[0002] Asphalt pavement refers to various types of pavement constructed by blending road asphalt with mineral materials. The asphalt binder enhances the paving aggregate's ability to withstand damage from traffic and natural factors, resulting in a smooth, dust-free, impermeable, and durable surface. Therefore, asphalt pavement is the most widely used high-quality pavement in road construction.

[0003] Asphalt pavements often develop potholes, cracks, and damage before reaching their service life. To maintain proper road accessibility, asphalt repair agents are often used to repair these areas. However, existing asphalt repair agents have high viscosity after repair and form a film on the surface, which lacks good permeability, excellent hydrophobicity, and good sealing properties. These products also have poor adhesion to the asphalt pavement and wear resistance. In humid environments, the bursting damage of pores or gaps caused by wheel movement leads to poor pavement stability and a long curing time. Summary of the Invention

[0004] The object of the present invention is to provide an asphalt repair agent and a preparation method thereof. By combining national standard 70a matrix asphalt and paraffin, 90# heavy rubber asphalt and heavy calcium powder, asphalt additives and SBS asphalt stabilizer, and a curing agent and -10# diesel, the problems of poor sealing, poor wear resistance, poor road surface stability and long curing time are solved.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an asphalt repair agent, comprising the following raw materials in weight percentage: 6% machine-made sand, 80.38%-80.48% asphalt mixture, 1.8% asphalt additive, 8% -10# diesel, 0.5% SBS asphalt stabilizer, 0.1% brightener, 0.1%-0.2% curing agent, 0.02% paraffin, 2% heavy calcium powder and 1% epoxy resin.

[0006] Preferably, the asphalt mixture comprises the following raw materials in weight percentage: 68.38%-68.48% of national standard 70a base asphalt, 8% of 90# heavy rubber asphalt, 2% of rubber asphalt, and 2% of 10# asphalt.

[0007] Preferably, the machine-made sand is 90-mesh fine sand.

[0008] A method for preparing an asphalt repair agent comprises the following steps:

[0009] S1. Put national standard 70a base asphalt and 90# heavy rubber asphalt into a heated mixing tank;

[0010] S2. While the heated stirring tank is rotating, the heated stirring tank is heated to 195° C., so that the national standard 70a base asphalt and 90# heavy rubber asphalt are heated and melted in the heated stirring tank;

[0011] S3. After the heating mixing tank is heated to 195°C, continue heating for 8 hours. Then, every two minutes, add the following: fine sand, asphalt additive, -10# diesel, SBS asphalt stabilizer, brightener, curing agent, paraffin, heavy calcium powder, rubber asphalt, epoxy resin and 10# asphalt into the heating mixing tank and stir together.

[0012] S4. After the last raw material 10# asphalt has been stirred in the heating mixing tank for two minutes, the rotation of the heating mixing tank and the heating of the heating mixing tank are stopped;

[0013] S5, cooling the repairing agent stirred in the heated stirring tank in the heated stirring tank;

[0014] S6. When the repair agent cools down to below 50℃, it can be barreled.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this invention, the combination of national standard 70a base asphalt and paraffin reduces the product's viscosity, allowing it to deeply penetrate pores and voids without forming a film on the surface. This provides excellent permeability and exceptional hydrophobicity, achieving superior sealing properties on existing pavement surfaces. Furthermore, silicone asphalt can permanently seal voids, pores, and cracks ≤2mm in asphalt pavement, thereby imparting an internal waterproof and moisture-resistant mechanism to the asphalt pavement.

[0017] 2. In the present invention, the reducing material is made by combining 90# heavy rubber asphalt and heavy calcium powder, which will not be worn, has strong bonding and adhesion to various asphalt pavements, is light in color fading, and has a sealing effect of at least 3 years, thereby fundamentally extending the service life of the asphalt pavement.

[0018] 3. The combination of asphalt additives and SBS asphalt stabilizers in this invention provides strong UV and thermal shock resistance, making it suitable for both cold and hot climates. This enhances the stability and deformation resistance of asphalt concrete, reduces damage caused by repeated freeze-thaw cycles, and mitigates the risk of cracking or rupture of pores or voids caused by wheel movement in humid environments.

[0019] 4. In the present invention, by combining the curing agent and -10# diesel, the construction is simple, and the road surface can be formed in one step without the need for milling, digging, patching, and grouting. The road surface function can be restored over a large area and fine cracks can be sealed in one step. DETAILED DESCRIPTION

[0020] The specific embodiments of the present invention are described in detail below:

[0021] Example 1:

[0022] An asphalt repair agent and a preparation method thereof.

[0023] The invention comprises the following raw materials in the following weight ratios: 6% of machine-made sand, 80.48% of asphalt mixture, 1.8% of asphalt additive, 8% of -10# diesel, 0.5% of SBS asphalt stabilizer, 0.1% of brightener, 0.1% of curing agent, 0.02% of paraffin wax, 2% of heavy calcium powder and 1% of epoxy resin.

[0024] Specifically, the asphalt mixture includes the following raw materials in weight percentage: 68.48% of national standard 70a base asphalt, 8% of 90# heavy rubber asphalt, 2% of rubber asphalt, and 2% of 10# asphalt. Preferably, the national standard 70a base asphalt is a road asphalt with good strength, stiffness and stability, less damage due to drying shrinkage, less damage due to temperature shrinkage, high density, good shrinkage and waterproof properties; the 90# heavy rubber asphalt is used to resist the corrosion of rainy and snowy weather; the 2% rubber asphalt increases the adhesion and toughness of the product; and the 10# asphalt enables the product to be quickly formed in the high temperature season in summer.

[0025] Specifically, the machine-made sand is 90-mesh fine sand, which has high strength and is easy to shape.

[0026] Specifically, the asphalt additive is used to change the properties of asphalt, increase the active ingredients of asphalt, prevent it from becoming soft in summer, cracking in winter, and increasing its toughness by not deforming when encountering large vibrations; the -10# diesel increases the low-temperature fluidity of the product, and the active ingredients in the diesel have corrosion resistance; the SBS asphalt stabilizer increases the viscosity and tensile strength of asphalt, and lasts for 36 months, excluding special force majeure disasters; the brightener increases the brightness of the product; the curing agent is used to increase the curing time of the product according to the temperature in different seasons; paraffin is used to increase the lubricity so that the product can flow into small gaps; heavy calcium powder makes the product not easy to loosen in hot weather; epoxy resin increases the friction between the product and the ground and its antioxidant level.

[0027] Furthermore, when used in winter when the temperature is low, 0.1% of curing agent raw material will be added.

[0028] Specifically, the combination of national standard 70a base asphalt and paraffin reduces the product's viscosity, allowing it to deeply penetrate pores and voids without forming a film on the surface. This results in excellent permeability and exceptional hydrophobicity, resulting in a superior sealing performance for existing pavement. Furthermore, silicone asphalt can permanently seal voids, pores, and cracks ≤2mm in asphalt pavement, imparting an internal waterproof and moisture-resistant mechanism to the asphalt pavement.

[0029] Specifically, the reducing material made by combining 90# heavy rubber asphalt and heavy calcium powder will not be worn, has strong bonding and adhesion to various types of asphalt pavements, has little color fading, and can achieve a sealing effect of at least 3 years, thus fundamentally extending the service life of the asphalt pavement.

[0030] Specifically, the combination of asphalt additives and SBS asphalt stabilizers provides the product with strong resistance to UV rays and thermal shock, making it suitable for both cold and hot climates. This enhances the stability and deformation and distortion resistance of asphalt concrete, reduces damage caused by repeated freeze-thaw cycles, and mitigates the potential for cracking and rupture of pores or voids caused by wheel movement in humid environments.

[0031] Specifically, through the combination of curing agent and -10# diesel, the construction is simple, and the road surface can be formed in one step without the need for milling, digging, patching and grouting. It can be formed in one step, and can restore the road surface function over a large area and seal fine cracks.

[0032] A method for preparing an asphalt repair agent comprises the following steps:

[0033] S1. Put national standard 70a base asphalt and 90# heavy rubber asphalt into a heated mixing tank;

[0034] S2. While the heated stirring tank is rotating, the heated stirring tank is heated to 195° C., so that the national standard 70a base asphalt and 90# heavy rubber asphalt are heated and melted in the heated stirring tank;

[0035] S3. After the heating mixing tank is heated to 195°C, continue heating for 8 hours. Then, every two minutes, add the following: fine sand, asphalt additive, -10# diesel, SBS asphalt stabilizer, brightener, curing agent, paraffin, heavy calcium powder, rubber asphalt, epoxy resin and 10# asphalt into the heating mixing tank and stir together.

[0036] S4. After the last raw material 10# asphalt has been stirred in the heating mixing tank for two minutes, the rotation of the heating mixing tank and the heating of the heating mixing tank are stopped;

[0037] S5, cooling the repairing agent stirred in the heated stirring tank in the heated stirring tank;

[0038] S6. When the repair agent cools down to below 50℃, it can be barreled.

[0039] Example 2:

[0040] 6% machine-made sand, 80.38% asphalt mixture, 1.8% asphalt additive, 8% -10# diesel, 0.5% SBS asphalt stabilizer, 0.1% brightener, 0.2% curing agent, 0.02% paraffin wax, 2% heavy calcium powder, and 1% epoxy resin. Furthermore, the asphalt mixture includes the following raw materials in percentage by weight: 68.38% national standard 70a base asphalt, 8% 90# heavy rubber asphalt, 2% rubber asphalt, and 2% 10# asphalt. The preparation method is the same as in Example 1.

[0041] Preferably, when used in summer when the temperature is high, 0.2% of the curing agent raw material will be added.

[0042] Example 3:

[0043] 6% machine-made sand, 80.43% asphalt mixture, 1.8% asphalt additive, 8% -10# diesel, 0.5% SBS asphalt stabilizer, 0.1% brightener, 0.15% curing agent, 0.02% paraffin wax, 2% heavy calcium powder, and 1% epoxy resin. Furthermore, the asphalt mixture includes the following raw materials in percentage by weight: 68.43% national standard 70a base asphalt, 8% 90# heavy rubber asphalt, 2% rubber asphalt, and 2% 10# asphalt. The preparation method is the same as in Example 1.

[0044] Preferably, 0.15% of the curing agent raw material will be added when used in spring or autumn when the temperature is moderate.

Claims

1. An asphalt repair agent, characterized in that: The invention comprises the following raw materials in weight percentage: 6% machine-made sand, 80.38%-80.48% asphalt mixture, 1.8% asphalt additive, 8% -10# diesel, 0.5% SBS asphalt stabilizer, 0.1% brightener, 0.1%-0.2% curing agent, 0.02% paraffin wax, 2% heavy calcium powder and 1% epoxy resin.

2. The asphalt repair agent according to claim 1, characterized in that: The asphalt mixture includes the following raw materials in weight percentage: 68.38%-68.48% of national standard 70a base asphalt, 8% of 90# heavy rubber asphalt, 2% of rubber asphalt, and 2% of 10# asphalt.

3. The asphalt repair agent according to claim 1, characterized in that: The machine-made sand is 90-mesh fine sand.

4. A method for preparing an asphalt repair agent, characterized in that: The following steps are involved: S1. Put national standard 70a base asphalt and 90# heavy rubber asphalt into a heated mixing tank; S2. While the heated stirring tank is rotating, the heated stirring tank is heated to 195° C., so that the national standard 70a base asphalt and 90# heavy rubber asphalt are heated and melted in the heated stirring tank; S3. After the heating mixing tank is heated to 195°C, continue heating for 8 hours. Then, every two minutes, add the following: fine sand, asphalt additive, -10# diesel, SBS asphalt stabilizer, brightener, curing agent, paraffin, heavy calcium powder, rubber asphalt, epoxy resin and 10# asphalt into the heating mixing tank and stir together. S4. After the last raw material 10# asphalt has been stirred in the heating mixing tank for two minutes, the rotation of the heating mixing tank and the heating of the heating mixing tank are stopped; S5, cooling the repairing agent stirred in the heated stirring tank in the heated stirring tank; S6. When the repair agent cools down to below 50℃, it can be barreled.