Chemical SBS modified asphalt regenerant and formula design method

Abstract

The invention belongs to the technical field of asphalt pavement material regeneration, and particularly relates to a chemical SBS modified asphalt regenerant and a formula design method.The chemical SBS modified asphalt regenerant comprises, by mass, 1.5-2.5 parts of a polymer modifier component, 6-7 parts of a regeneration component, 1-3 parts of an additive component and 0.01-0.1 part of an auxiliary material component, sBS is a main modified material, the asphalt is endowed with good elasticity and temperature resistance, the SBS structure enables the asphalt to maintain fluidity at high temperature and to maintain toughness at low temperature, and the regenerated component mainly comprises regenerated asphalt and a basic component of waste edible vegetable oil and a regenerant, generally recycled old asphalt, and has the advantages of low cost and low energy consumption. And various oil and solid components are contained. The additive comprises the antioxidant for prolonging the service life of the asphalt and preventing oxidation, the plasticizer for improving the flowability and low-temperature performance of the asphalt, and the filler for enhancing the mechanical property and durability of the asphalt.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a chemical SBS modified asphalt regeneration agent and a formula design method. Background Art

[0002] SBS modified asphalt is a material that improves the performance of asphalt by adding SBS polymer to it. SBS is a thermoplastic elastomer with good elasticity and strength, which can significantly improve the physical and chemical properties of asphalt. Due to its excellent performance, SBS modified asphalt is widely used in road paving, especially under high traffic and severe weather conditions. In construction and civil engineering, SBS modified asphalt can also be used to make waterproof membranes, providing excellent waterproofing effects. SBS modified asphalt can also be used to make roofing materials, sealants, etc. The production of SBS modified asphalt usually involves mixing SBS polymer with asphalt at high temperature to ensure that the polymer is fully dissolved and evenly dispersed in the asphalt. The specific production process and ratio may vary according to different application requirements.

[0003] Regeneration agent is an additive used to restore and improve the performance of recycled asphalt mixture. It is mainly used in road engineering, especially in the maintenance and repair of asphalt pavements. Regeneration agent can effectively improve the working performance of recycled asphalt, making it closer to the performance of new asphalt. The use of regeneration agent can improve the performance of recycled asphalt, allowing recycled materials to replace new asphalt in more applications, thereby reducing material costs. Summary of the invention

[0004] Based on the technical problems that the ultrasonic diagnostic reporting device has a simple design structure, a single function and is inconvenient to use, the present invention proposes a chemical SBS modified asphalt regeneration agent and a formulation design method.

[0005] The chemical SBS modified asphalt regeneration agent proposed in the present invention includes 1.5-2.5 parts of polymer modifier components, 6-7 parts of regeneration components, 1-3 parts of additive components, and 0.01-0.1 parts of auxiliary material components in parts by mass. The polymer modifier component is polystyrene-butadiene-styrene, which is the main modified material and gives asphalt good elasticity and temperature resistance. The structure of SBS enables it to maintain fluidity at high temperatures and toughness at low temperatures. The regeneration components are mainly regenerated asphalt and waste edible vegetable oil. The basic components of the regeneration agent are usually recycled old asphalt, containing various oils and solid components. The additive components include antioxidants to extend the service life of asphalt and prevent oxidation, plasticizers to improve the fluidity and low-temperature performance of asphalt, and fillers to enhance the mechanical properties and durability of asphalt.

[0006] Preferably, the method comprises the following steps: S1: Prepare polymer components, regeneration components, solvents, additives, and auxiliary materials according to the mass fractions of claim 1 for use; S2: crush the regenerated asphalt in the required regenerated components into usable particles of different sizes, with a particle diameter of 9.5mm to 26.5mm, providing a higher load-bearing capacity and suitable for high-grade roads; S3: filtering the waste edible vegetable oil in the required regeneration agent component and removing impurities in the waste edible vegetable oil to make it purer; S4: the antioxidant comprises phosphite and phenolic compounds, the plasticizer comprises petroleum resin and light oil, and the filler comprises carbon black and talc; Further: S1: 1-3 parts of the additive component phosphite, 2-4 parts of petroleum resin, and 3-5 parts of carbon black are mixed, and stirred at a speed of 200-500 rpm for 3-5 minutes to obtain agent A; S2: 1-3 parts of the additive component phenolic compound, 2-4 parts of light oil, and 3-5 parts of talc are mixed, and stirred at a speed of 200-500 rpm for 3-5 minutes to obtain agent B; Further: S1: mixing the waste edible vegetable oil in the regeneration agent component and the polystyrene-butadiene-styrene in the polymer modifier component, and stirring at a speed of 100 to 200 rpm for 5 to 8 minutes; S2: stirring the crushed regenerated asphalt at a speed of 60 to 120 rpm for 8 to 10 minutes; S3: adding the edible vegetable oil and the polystyrene-butadiene-styrene mixture into the regenerated asphalt and stirring continuously at a rotation speed of 60 to 120 rpm for 8 to 10 minutes.

[0007] Preferably: the stirred regenerated asphalt is divided into two parts and stirred continuously, and during the stirring process, agent A and agent B are added to the two parts of the regenerated asphalt respectively and stirred at a speed of 60 to 120 rpm for 8 to 10 minutes.

[0008] Furthermore, Agent A and Agent B were added to two portions of recycled asphalt for performance testing, including physical property testing: including viscosity, softening point, ductility, etc.; mechanical property testing: such as tensile strength, compressive strength, fatigue life, etc.; durability testing: such as aging test, low-temperature flexibility test, etc.

[0009] The beneficial effects of the present invention are: 1. By crushing the recycled asphalt, the recycled asphalt is crushed into usable particles of different sizes, which can better simulate the actual application effect, so that the recycled material can replace the new asphalt in more applications, thereby reducing the material cost. 2. The recycled components mainly include waste edible vegetable oil. The waste edible vegetable oil in the regeneration agent component is filtered and added to the recycled asphalt. This can improve the performance of the recycled asphalt, save materials, and improve the recycling effect.

[0010] 3. By adding agent A and agent B to the recycled asphalt and conducting performance tests on the recycled asphalt, the final formula design method is obtained through physical property tests, mechanical property tests and durability tests.

[0011] 4. By adding additive ingredients, the additive ingredients include antioxidants to extend the service life of asphalt and prevent oxidation, plasticizers to improve the fluidity and low temperature performance of asphalt, and fillers to enhance the mechanical properties and durability of asphalt. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0013] The chemical SBS modified asphalt regeneration agent includes 1.5-2.5 parts of polymer modifier components, 6-7 parts of recycled components, 1-3 parts of additive components, and 0.01-0.1 parts of auxiliary material components by mass. The polymer modifier component is polystyrene-butadiene-styrene, which is the main modified material and gives asphalt good elasticity and temperature resistance. The structure of SBS enables it to maintain fluidity at high temperatures and toughness at low temperatures. The recycled components are mainly recycled asphalt and waste edible vegetable oil. The basic components of the regeneration agent are usually recycled old asphalt, containing various oils and solid components. The additive components include antioxidants to extend the service life of asphalt and prevent oxidation, plasticizers to improve the fluidity and low-temperature performance of asphalt, and fillers to enhance the mechanical properties and durability of asphalt.

[0014] The method comprises the following steps: preparing polymer components, regeneration components, solvents, additives and auxiliary components according to the mass fractions as described in claim 1 for standby use; crushing the regenerated asphalt in the required regeneration components to make the regenerated asphalt into usable particles of different sizes, with a particle diameter of 9.5 mm to 26.5 mm, providing a higher load-bearing capacity and being suitable for high-grade roads; filtering the waste edible vegetable oil in the required regeneration agent component and removing impurities in the waste edible vegetable oil to make it purer; the antioxidant comprises phosphite and phenolic compounds, the plasticizer comprises petroleum resin and light oil, and the filler comprises carbon black and talcum powder; Mix 1-3 parts of the additive component phosphite, 2-4 parts of petroleum resin, and 3-5 parts of carbon black, and stir at a speed of 200-500 rpm for 3-5 minutes to obtain agent A; S2: Mix 1-3 parts of the additive component phenolic compound, 2-4 parts of light oil, and 3-5 parts of talc, and stir at a speed of 200-500 rpm for 3-5 minutes to obtain agent B; Mixing the waste edible vegetable oil in the regeneration agent component and the polystyrene-butadiene-styrene in the polymer modifier component, and stirring at a speed of 100 to 200 rpm for 5 to 8 minutes; The crushed regenerated asphalt is stirred at a speed of 60 to 120 rpm for 8 to 10 minutes; The edible vegetable oil and the polystyrene-butadiene-styrene mixture are added to the regenerated asphalt and stirred continuously at a rotation speed of 60 to 120 rpm for 8 to 10 minutes.

[0015] The regenerated asphalt is divided into two parts after stirring and stirred continuously. During the stirring process, agent A and agent B are added into the two parts of the regenerated asphalt respectively and stirred at a speed of 60 to 120 rpm for 8 to 10 minutes.

[0016] The performance tests were carried out on the two parts of recycled asphalt added to Agent A and Agent B respectively, including physical property tests: including viscosity, softening point, ductility, etc.; mechanical property tests: such as tensile strength, compressive strength, fatigue life, etc.; durability tests: such as aging tests, low-temperature flexibility tests, etc.

[0017] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Chemical SBS modified asphalt regeneration agent, characterized in that: The components include 1.5-2.5 parts of polymer modifier, 6-7 parts of recycled components, 1-3 parts of additive components, and 0.01-0.1 parts of auxiliary materials by weight; The polymer modifier component is polystyrene-butadiene-styrene, the recycled component is mainly recycled asphalt and waste edible vegetable oil, and the additive component includes antioxidant, plasticizer and filler.

2. The method for formula design of chemical SBS modified asphalt regeneration agent according to claim 1, characterized in that: The following steps are involved: S1: Prepare polymer components, regeneration components, solvents, additives, and auxiliary materials according to the mass fractions of claim 1 for use; S2: crush the regenerated asphalt in the required regenerated components into usable particles of different sizes, with a particle diameter of 9.5 mm to 26.5 mm; S3: filtering the waste edible vegetable oil in the required regeneration agent component and removing impurities in the waste edible vegetable oil; S4: The antioxidant includes phosphite and phenolic compounds, the plasticizer includes petroleum resin and light oil, and the filler includes carbon black and talc.

3. The method for formula design of the chemical SBS modified asphalt regeneration agent according to claim 2, characterized in that: S1: Mix 1 to 3 parts of the additive component phosphite, 2 to 4 parts of petroleum resin, and 3 to 5 parts of carbon black, and stir at a speed of 200 to 500 rpm for 3 to 5 minutes to obtain agent A; S2: Mix 1 to 3 parts of the additive ingredients phenolic compound, 2 to 4 parts of light oil, and 3 to 5 parts of talc, and stir at a speed of 200 to 500 rpm for 3 to 5 minutes to obtain Agent B.

4. The method for formula design of the chemical SBS modified asphalt regeneration agent according to claim 3, characterized in that: S1: mixing the waste edible vegetable oil in the regeneration agent component and the polystyrene-butadiene-styrene in the polymer modifier component, and stirring at a speed of 100 to 200 rpm for 5 to 8 minutes; S2: stirring the crushed regenerated asphalt at a speed of 60 to 120 rpm for 8 to 10 minutes; S3: Add the edible vegetable oil and the polystyrene-butadiene-styrene mixture into the regenerated asphalt and continue stirring at a speed of 60 to 120 rpm for 8 to 10 minutes.

5. The method for formula design of chemical SBS modified asphalt regeneration agent according to claim 4, characterized in that: The regenerated asphalt is divided into two parts after stirring and stirred continuously. During the stirring process, agent A and agent B are added into the two parts of the regenerated asphalt respectively and stirred at a speed of 60 to 120 rpm for 8 to 10 minutes.

6. The method for formula design of the chemical SBS modified asphalt regeneration agent according to claim 5, characterized in that: The regenerated asphalt added separately was allowed to stand for 30 to 40 minutes, and the performance of Agent A and Agent B were tested by adding them to two portions of regenerated asphalt respectively.