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A kind of enhanced asphalt regenerant and preparation method thereof

An asphalt rejuvenating agent and enhanced technology, applied in construction, building components, building insulation materials, etc., can solve the problems of high volatility of light oil, easy volatilization of light oil, accelerated asphalt aging, etc., to achieve green environmental protection and sustainable Development, reduction of agglomeration, high compatibility effect

Active Publication Date: 2021-06-29
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, light oil is highly volatile and has poor compatibility with old asphalt, so it is easy to lose
In the process of hot mixing and the process of paving the recycled mixture, the light oil is easy to volatilize and lose its effect due to the influence of high temperature environment
In addition, according to the reaction formula aromatics → colloids → asphaltenes, the excessive addition of oil will accelerate the process of this irreversible reaction and accelerate the aging of asphalt

Method used

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  • A kind of enhanced asphalt regenerant and preparation method thereof
  • A kind of enhanced asphalt regenerant and preparation method thereof
  • A kind of enhanced asphalt regenerant and preparation method thereof

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preparation example Construction

[0046] In another embodiment, a preparation method for preparing the enhanced asphalt regenerant comprises the following steps:

[0047] S1. Performing low-temperature plasma jet spraying treatment on the ultrafine powder to obtain the modified porous structure ultrafine powder;

[0048] S2. Mix the porous structure ultrafine powder with the regeneration component to obtain the enhanced asphalt regeneration agent.

[0049] In a preferred embodiment, in step S1, gas is passed into the atmospheric pressure low-temperature plasma equipment according to the gas flow rate of 10cc / min-150cc / min, and the dried ultrafine powder is sent into the plasma equipment , make the powder at the outlet of the low-temperature plasma jet 5-10 cm, control the moving speed of the jet outlet of the plasma equipment at 0-30 mm / s, and treat for 0.5-30 minutes to obtain the modified super porous structure fine powder.

[0050] In a preferred embodiment, in step S2, the porous structure ultrafine powd...

Embodiment 1

[0053] An enhanced asphalt rejuvenator, mainly prepared from the following components in parts by mass:

[0054] 33 parts of mixed oil, which is mainly formed by mixing engine oil additives, environmentally friendly aromatic oil and epoxy soybean oil in a mass ratio of 1:5:5; 1 part of carbon nanotubes.

[0055] The preparation method of the asphalt regenerant of the above-mentioned present embodiment specifically comprises the following steps:

[0056] S1. In the atmospheric pressure low-temperature plasma equipment, air is introduced according to an air flow rate of 20cc / min, and the dried carbon nanotubes are sent into the plasma equipment, so that the carbon nanotubes are at the outlet of the low-temperature plasma jet at 5cm, After being treated for 25 minutes, modified carbon nanotubes were obtained.

[0057] S2. Add the regeneration component into the beaker according to the mass fraction, and stir for 10 minutes; after the stirring is completed, the asphalt regenerati...

Embodiment 2

[0062] An enhanced asphalt rejuvenator, mainly prepared from the following components in parts by mass:

[0063] 33 parts of mixed oil; the mixed oil is mainly formed by mixing engine oil additives, environmentally friendly aromatic oil and epoxy soybean oil in a mass ratio of 1:5:5; 1 part of attapulgite.

[0064] The preparation method of the asphalt regenerant of the above-mentioned present embodiment specifically comprises the following steps:

[0065] S1. In the atmospheric pressure low-temperature plasma equipment, nitrogen gas is introduced according to the air flow rate of 20cc / min, and the dried attapulgite is sent into the plasma equipment, so that the powder is at the outlet of the low-temperature plasma jet at 10cm, and processed After 25 minutes, the modified attapulgite was obtained.

[0066] S2. Add the regeneration component into the beaker according to the mass fraction, and stir for 10 minutes; after the stirring is completed, the asphalt regeneration agent ...

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Abstract

An enhanced asphalt rejuvenator and its preparation method, the asphalt rejuvenator includes the following components in parts by mass: 10-60 parts of regeneration components, the regeneration components include mixing light oil and heavy oil in an appropriate proportion 1-30 parts of ultra-fine powder, the ultra-fine powder is a porous structure ultra-fine powder obtained through low-temperature plasma modification, and the average particle size of the powder is less than 100 μm. The invention can obtain the superfine powder reinforced asphalt rejuvenator with good dispersing effect and high compatibility. The improvement is relatively large, especially its anti-secondary aging performance has been greatly improved, thereby prolonging the service life of the pavement paved with recycled asphalt mixture, and it is expected to reduce the post-maintenance cost of the paved road in engineering.

Description

technical field [0001] The invention relates to an enhanced asphalt regenerant and a preparation method thereof. Background technique [0002] With the increase of the service life of asphalt pavement in our country, a large number of roads have reached the design life in recent years. Therefore, the new technology of waste asphalt regeneration, which can avoid the waste of a large amount of waste asphalt mixture, has become the focus of a new round of research, and asphalt regeneration agent as the core of this technology has received extensive attention. [0003] Although existing asphalt rejuvenators can restore the basic properties of aged asphalt to a certain extent, their comprehensive mechanical properties cannot fully meet the construction requirements in actual engineering applications. [0004] Although ultrafine powder can be introduced into the asphalt rejuvenator system to strengthen and modify the recycled mixture, however, the superfine powder has a high surf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K9/00C08K7/26C08K3/04
Inventor 唐国翌宋国林谢俊伟张泽范鑫沈成柱
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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