Recycled asphalt mixture and preparation method thereof

Abstract

The invention relates to the field of asphalt mixture preparation, and particularly discloses a recycled asphalt mixture and a preparation method thereof. The recycled asphalt mixture comprises the following components in parts by weight: 450-500 parts of aggregate, 60-75 parts of asphalt and 20-25 parts of a recycling agent, wherein the aggregate comprises natural aggregate and recycled aggregate, and the weight ratio of the natural aggregate to the recycled aggregate is (3-4):1. The preparation method comprises the following steps: milling an asphalt pavement of a target pavement, and crushing into particles with the average particle size of 5 mm; mixing recycled aggregate and a recycling agent, and stirring for 1 minute at an ambient temperature of 160 DEG C; and adding natural aggregate and the asphalt in proportion, and stirring for 1 minute; The method has the effect of improving the utilization efficiency of the waste asphalt mixture.

Description

technical field

[0001] This application relates to the field of asphalt mixture preparation, more specifically, it relates to a kind of recycled asphalt mixture and its preparation method Background technique

[0002] Asphalt is a common building material, which is mainly used for road construction. With the continuous increase of road mileage in our country, the amount of asphalt is also increasing year by year. After a long period of use, the condition of the road surface will deteriorate, and cracks and defects will occur. In such cases, the road surface needs to be repaired again.

[0003] The asphalt pavement repair project in the related field often needs to excavate the original asphalt pavement, and lay new asphalt mixture after levelling again.

[0004] However, the asphalt mixture excavated from the original road surface is discarded as construction waste. On the one hand, this construction method will generate a large amount of construction waste, which will incr...

Examples

preparation example 1-3

Comparative example 1 10kg 20kg 30kg 1.5kg 6kg 1.5kg 1.5kg Comparative example 2 10kg 20kg 40kg 1.4kg 8kg 2kg 2kg Comparative example 3 10kg 30kg 40kg 1.34kg 8kg 4kg 4kg

[0041] A preparation method of a regeneration agent for regenerated asphalt mixture, comprising the following steps

[0042] S1: Mix heavy oil and ethanol in proportion to obtain stable heavy oil components;

[0043] S2: Adding Al to the stable heavy oil component 2 o 3 Powder, AlCl 3 Powder, mixed evenly to obtain oil phase and solid phase mixture;

[0044] S3: Finally, add glycerin and palm oil to the oil phase and solid phase mixture, and mix evenly in an 80°C ambient water bath;

[0045] S4: Add plasticizer and stir at 80°C for 20 minutes.

[0046] AlCl used 3 、Al 2 o 3 The average particle size is 2mm.

preparation example 4

[0048] The difference with Preparation Example 1 is that no ethanol, Al 2 o 3 Particles, AlCl 3 particles.

[0049] The preparation method of this preparation example regeneration agent, comprises the following steps:

[0050] S1 Mix heavy oil, glycerin and palm oil in proportion in a water bath at 80°C;

[0051] Add plasticizer to S2 and stir at 80°C for 20 minutes.

preparation example 5

[0053] The difference with Preparation Example 1 is that Al is not added in this preparation example 2 o3 , AlCl 3 .

[0054] The preparation method of this preparation example regeneration agent, comprises the following steps:

[0055] S1, mixing heavy oil and ethanol in proportion to obtain a stable heavy oil component;

[0056] S2, adding glycerin and palm oil to the stable heavy oil component, and mixing evenly under a water bath at 80°C;

[0057] S3, add plasticizer, and stir at 80°C for 10 minutes.

technical field

[0001] This application relates to the field of asphalt mixture preparation, more specifically, it relates to a kind of recycled asphalt mixture and its preparation method Background technique

[0002] Asphalt is a common building material, which is mainly used for road construction. With the continuous increase of road mileage in our country, the amount of asphalt is also increasing year by year. After a long period of use, the condition of the road surface will deteriorate, and cracks and defects will occur. In such cases, the road surface needs to be repaired again.

[0003] The asphalt pavement repair project in the related field often needs to excavate the original asphalt pavement, and lay new asphalt mixture after levelling again.

[0004] However, the asphalt mixture excavated from the original road surface is discarded as construction waste. On the one hand, this construction method will generate a large amount of construction waste, which will incr...

Examples

preparation example 1-3

Comparative example 1 10kg 20kg 30kg 1.5kg 6kg 1.5kg 1.5kg Comparative example 2 10kg 20kg 40kg 1.4kg 8kg 2kg 2kg Comparative example 3 10kg 30kg 40kg 1.34kg 8kg 4kg 4kg

[0041] A preparation method of a regeneration agent for regenerated asphalt mixture, comprising the following steps

[0042] S1: Mix heavy oil and ethanol in proportion to obtain stable heavy oil components;

[0043] S2: Adding Al to the stable heavy oil component 2 o 3 Powder, AlCl 3 Powder, mixed evenly to obtain oil phase and solid phase mixture;

[0044] S3: Finally, add glycerin and palm oil to the oil phase and solid phase mixture, and mix evenly in an 80°C ambient water bath;

[0045] S4: Add plasticizer and stir at 80°C for 20 minutes.

[0046] AlCl used 3 、Al 2 o 3 The average particle size is 2mm.

preparation example 4

[0048] The difference with Preparation Example 1 is that no ethanol, Al 2 o 3 Particles, AlCl 3 particles.

[0049] The preparation method of this preparation example regeneration agent, comprises the following steps:

[0050] S1 Mix heavy oil, glycerin and palm oil in proportion in a water bath at 80°C;

[0051] Add plasticizer to S2 and stir at 80°C for 20 minutes.

preparation example 5

[0053] The difference with Preparation Example 1 is that Al is not added in this preparation example 2 o3 , AlCl 3 .

[0054] The preparation method of this preparation example regeneration agent, comprises the following steps:

[0055] S1, mixing heavy oil and ethanol in proportion to obtain a stable heavy oil component;

[0056] S2, adding glycerin and palm oil to the stable heavy oil component, and mixing evenly under a water bath at 80°C;

[0057] S3, add plasticizer, and stir at 80°C for 10 minutes.

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