Preparation method of environmental-friendly rubber asphalt

An environmentally friendly rubber and rubber asphalt technology, used in building thermal insulation materials, building components, buildings, etc., can solve problems such as environmental protection, achieve excellent cost performance, good durability, and improve rutting resistance and construction stability.

Inactive Publication Date: 2019-06-18
梁兵
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the processing temperature of rubber asphalt is 185°C. During this process, there will be more than 80 kinds of gases in the base asphalt, including hydrogen sulfide, mercaptans, alkanes and other toxic gases, and rubber powder will not release gases at this temperature. , so the unpleasant smell in the production process is mainly produced by the base petroleum asphalt, which is not environmentally friendly for production and use.

Method used

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  • Preparation method of environmental-friendly rubber asphalt
  • Preparation method of environmental-friendly rubber asphalt
  • Preparation method of environmental-friendly rubber asphalt

Examples

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preparation example Construction

[0020] The invention discloses a preparation method for producing environmentally friendly rubber asphalt, comprising: 70-100 parts of 90# petroleum asphalt, 20-40 parts of rubber powder, and 0.2-5 parts of deodorant. First, heat and melt the petroleum asphalt at 180°C, add deodorant, and stir for 0.5h through high-speed shearing (shear rate: 2000-4500r / min). After shearing for 40 minutes, the volatilized alkanes, mercaptans, olefins and other gases are recovered through condensation treatment to obtain environmentally friendly rubber asphalt.

[0021] Further, the petroleum asphalt is a conventional product, which can be purchased from the market.

[0022] Further, the rubber powder is any one or two in any ratio of ground automobile tires, rubber products, etc.

[0023] Further, the deodorant is a mixture of one or more of zinc ricinoleate, ricinoleate, long-chain acids containing -C=C groups, and organic acid soap compounds in any proportion;

[0024] Further, the specifi...

Embodiment 1

[0026] 1#: Take 100 parts of road 90# petroleum asphalt and 40 parts of rubber powder. First, heat and melt the petroleum asphalt at 180°C, then add rubber powder, shear at a high speed of 4500r / min, stir for 0.5h, and then mix it with 5000r / min speed shearing at high speed for 40min, volatilized alkanes, mercaptans, olefins and other gases are recovered through condensation treatment to obtain environmentally friendly rubber asphalt. Invert the sample and test various indicators of environmentally friendly rubber asphalt;

Embodiment 2

[0028] 2#: Take 100 parts of road 90# petroleum asphalt, 40 parts of rubber powder, and 0.2 parts of deodorant, heat and melt the petroleum asphalt at 185°C, add deodorant, and shear at 4500r / min at high speed, stir for 0.5h, and mix well Finally, add rubber powder and shear at a high speed of 5000r / min for 40 minutes. The volatilized alkanes, mercaptans, olefins and other gases are recovered through condensation treatment to obtain environmentally friendly rubber asphalt. Invert the sample and test various indicators of environmentally friendly rubber asphalt;

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Abstract

The invention relates to an asphalt preparation method, and discloses a preparation method of an environmental-friendly rubber asphalt. The environmental-friendly rubber asphalt comprises 70 to 100 parts of No.90 petroleum asphalt, 20 to 40 parts of a rubber powder, and 0.2 to 5 parts of a deodorant. The preparation method comprises following steps: at a certain temperature, petroleum asphalt is heated for melting, a hydrogen sulfide removing agent is added, high speed shearing (shearing speed is controlled to be 2000 to 4500r/min) is adopted, stirring is carried out for 0.5h, the rubber powder is added, high speed shearing is carried out at a rotating speed of 5000r/min for 40min, volatilized gas including alkanes, mercaptan, and alkenes is subjected to concentration recycling, reinjection is carried out in cooling process, so that the environmental-friendly rubber asphalt is prepared. Adding of the hydrogen sulfide removing agent is capable of removing hydrogen sulfide gas volatilized from asphalt, concentration treatment is capable of recycling asphalt effective components with boiling points ranging from room temperature to processing temperature. The preparation method is capable of reducing volatilization of harmful substances, improving pavement performance, improving production process, and providing a feasible approach for ecological environment protection.

Description

technical field [0001] The invention relates to a method for preparing asphalt, in particular to a method for preparing environment-friendly rubber asphalt. Background technique [0002] Rubber asphalt is processed from waste tires into rubber powder. Under high temperature, rubber powder and asphalt are mixed and reacted through a specific process to make rubber asphalt. It has good adhesion, strong aging resistance, low brittle point, high temperature viscosity, etc. Advantages, when applied in road paving, it plays a role in improving road performance and promoting resource reuse. The application technology of rubber asphalt in my country started relatively late. Due to various reasons, the research and development and application of rubber asphalt are intermittent. Until 2003, after introducing technology and equipment from the United States and South Africa, some test roads were paved all over the country and achieved good results. [0003] However, the processing tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L91/00C08K5/098C08K5/09
Inventor 梁兵龙佳朋
Owner 梁兵
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