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Asphalt reclaiming agent as well as preparation method and application thereof

A technology of asphalt regenerant and asphalt mixture, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of poor thermal stability, poor regeneration effect, and complicated varieties, and achieve good heat resistance and light stability Effect

Inactive Publication Date: 2018-03-23
GANSU CHANGLONG HIGHWAY MAINTENANCE TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of asphalt rejuvenators on the market. Most of the asphalt rejuvenators are composed of low-viscosity light oil, or are blended by adding tackifiers, modifiers, anti-aging agents and other ingredients on the basis of them. However, these asphalt rejuvenators There are problems of poor thermal stability and poor regeneration effect

Method used

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  • Asphalt reclaiming agent as well as preparation method and application thereof
  • Asphalt reclaiming agent as well as preparation method and application thereof
  • Asphalt reclaiming agent as well as preparation method and application thereof

Examples

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preparation example Construction

[0027] The present invention also provides the preparation method of the asphalt regenerant described in the above technical scheme, comprising the following steps:

[0028] The asphalt rejuvenator is obtained by mixing light base oil, plasticizer, stabilizing balance group and penetrating agent.

[0029] In the present invention, the mixing temperature is preferably 140-150°C, more preferably 145-148°C. In the present invention, there is no special limitation on the specific mixing method, and a mixing method well known to those skilled in the art is adopted, such as mechanical stirring. In the present invention, the rotational speed of the mechanical stirring is preferably 1000-2000 r / min, and the time of the mechanical stirring is preferably 30 min. In the present invention, the mechanical stirring is preferably carried out under heat preservation conditions, and the heat preservation temperature is preferably a mixing temperature, which will not be repeated here. In the ...

Embodiment 1

[0036] The dosage of each raw material in this embodiment is as follows (parts by weight, the total mass is 100 g): 30 g of light base oil, 30 g of plasticizer, 30 g of stabilizing and balancing agent, and 10 g of penetrating agent. Wherein the light base oil is the minus four-line extraction oil (the mass loss of the light base oil is 0.8% after the rotating film aging test; the viscosity ratio before and after aging is 1.8), the additive component is epoxy soybean oil, and the stabilizing balancer is It is rich in colloidal heavy oil (the mass content of colloid is 90%), and the penetrating agent is petroleum ether.

[0037] The preparation method comprises the following steps: firstly weigh the light base oil component, plasticizer, stabilizing balancer and penetrating agent respectively according to the proportion; then place all the weighed four components in an open stainless steel container, heat up Maintain a constant temperature at 140°C, use a high-speed stirring dis...

Embodiment 2

[0039]The dosage of each raw material in this embodiment is as follows (parts by weight, the total mass is 100 g): 40 g of light base oil, 30 g of plasticizer, 25 g of stabilizing and balancing agent, and 5 g of penetrating agent. Wherein the light base oil is furfural extract oil (the mass loss of light base oil is 0.6% after the rotating film aging test; the viscosity ratio before and after aging is 1.4), the additive component is epoxy soybean oil, and the stabilizing balancer is rich in Colloid heavy oil (mass content of colloid is 95%), penetrating agent is xylene.

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Abstract

The invention provides an asphalt reclaiming agent, and belongs to the technical field of road engineering. The asphalt reclaiming agent, provided by the invention, is prepared from the following components in parts by weight: 30 to 50 parts of light base oil, 20 to 30 parts of a plasticizer, 20 to 30 parts of a stable balance agent and 5 to 10 parts of a penetrant. In the asphalt reclaiming agentprovided by the invention, the light base oil is rich in aromatic hydrocarbon, and is strong in asphaltene dissolution ability; the plasticizer can be inserted between polymer molecular chains, an interaction force between the asphalt molecular chains is weakened, and the movement ability of the asphalt molecular chains is increased, so that the low-temperature ductility of aged asphalt is increased; the balance of a reclaimed asphalt colloid system is ensured by the stable balance agent; an osmotic effect of the reclaiming agent is increased by the penetrant, the reclaiming agent is enabledto be fused with the aged asphalt on the surface of aggregated rock in a blending process, and the reclaiming performance of the asphalt reclaiming agent can be increased.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to an asphalt regenerant and its preparation method and application. Background technique [0002] Asphalt concrete pavement is favored by road users and builders due to its advantages of comfortable driving, convenient maintenance and low noise. At present, the application of asphalt concrete pavement accounts for more than 95% of all pavement materials. With the increase of road service life, the maintenance and repair projects of asphalt concrete pavement increase, and the waste materials generated are easy to pollute the environment and occupy land. Asphalt concrete regeneration technology can not only effectively utilize waste pavement materials, but also save engineering cost, and has broad application prospects. [0003] In the existing technology, the utilization rate of waste and old materials in the hot-in-place recycling technology reaches 70-100%, and it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08K5/01
CPCC08L91/00C08L95/00C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08K5/01
Inventor 张富奎曹青霞魏定邦赵静卓张军林任国斌王晖张青丁民
Owner GANSU CHANGLONG HIGHWAY MAINTENANCE TECH RES INST CO LTD
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