Method of producing high-performance modified asphalt by utilizing mineral powder recovered by asphalt mixing station as well as pyrolytic oil and rubber powder of waste tyre and product of method

A technology of asphalt mixing and modified asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve problems such as low calorific value and serious emissions, and achieve the effects of improving use conditions, protecting the environment, and simplifying the process.

Active Publication Date: 2017-02-15
北京中天路业科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A large amount of furfural oil is added in the production process of tires. After furfural oil reacts with rubber, it has good performance. By high-temperature cracking of waste tires, the original furfural oil reacts with rubber. use, the calorific value is not high, but the emission is very serious, so its use is restricted in China

Method used

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  • Method of producing high-performance modified asphalt by utilizing mineral powder recovered by asphalt mixing station as well as pyrolytic oil and rubber powder of waste tyre and product of method
  • Method of producing high-performance modified asphalt by utilizing mineral powder recovered by asphalt mixing station as well as pyrolytic oil and rubber powder of waste tyre and product of method
  • Method of producing high-performance modified asphalt by utilizing mineral powder recovered by asphalt mixing station as well as pyrolytic oil and rubber powder of waste tyre and product of method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: A method for producing high-performance modified asphalt by using asphalt mixing plant to recover mineral powder and waste tire pyrolysis oil and rubber powder provided in this embodiment includes the following steps:

[0024] (1) Preparing raw materials: the components and weight percentages of the raw materials are as follows: 40% of petroleum asphalt, 15% of waste mineral powder, 30% of waste tire pyrolysis oil, 5% of petroleum resin, styrene-butadiene-styrene embedded Segment copolymer (SBS) 5%, styrene-butadiene rubber 5%;

[0025] (2) Heating and mixing: heat the waste tire pyrolysis oil to above 140-160°C, then gradually add styrene-butadiene rubber into the waste tire pyrolysis oil, and then add styrene-butadiene-styrene block copolymer , and constantly heating and stirring; preferably, in the step (2), the styrene-butadiene-styrene block copolymer is added after the styrene-butadiene rubber is completely dissolved.

[0026] (3) When the heating t...

Embodiment 2

[0031] Example 2, this example provides a method for producing high-performance modified asphalt and its products by using asphalt mixing plant to recover mineral powder, waste tire pyrolysis oil and rubber powder, and its components and production steps are basically the same as those in Example 1. The same, the difference is that the components of the raw materials and their weight percentages are as follows: petroleum asphalt 50%, waste mineral powder 15%, waste tire pyrolysis oil 25%, petroleum resin 2%, styrene-butadiene- Styrene block copolymer (SBS) 4%, styrene-butadiene rubber 4%.

[0032] The indicators of the high-performance modified asphalt products produced by the above-mentioned method of producing high-performance modified asphalt by using the asphalt mixing plant to recover mineral powder, waste tire pyrolysis oil and rubber powder are as follows:

[0033] project unit test results experiment method Penetration 25℃ 0.1mm 99.6 T0604 ...

Embodiment 3

[0034] Example 3, this example provides a method for producing high-performance modified asphalt and its products by using asphalt mixing plant to recover mineral powder, waste tire pyrolysis oil and rubber powder, and its components and production steps are basically the same as those in Example 1. The same, but the difference is that the components of the raw materials and their weight percentages are as follows: 45% of petroleum asphalt, 16% of waste mineral powder, 26% of waste tire pyrolysis oil, 4% of petroleum resin, styrene-butadiene- Styrene block copolymer (SBS) 7%, styrene-butadiene rubber 2%.

[0035] The indicators of the high-performance modified asphalt products produced by the above-mentioned method of producing high-performance modified asphalt by using the asphalt mixing plant to recover mineral powder, waste tire pyrolysis oil and rubber powder are as follows:

[0036] project unit test results experiment method Penetration 25℃ 0.1mm 8...

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Abstract

The invention discloses a method of producing high-performance modified asphalt by utilizing mineral powder recovered by an asphalt mixing station as well as pyrolytic oil and rubber powder of a waste tyre and a product of the method. The high-performance modified asphalt is prepared from the following components in percentage by weight: 40-50 percent of petroleum asphalt, 15-20 percent of the waste mineral powder, 25-30 percent of the waste tyre pyrolytic oil, 2-5 percent of petroleum resin, 4-10 percent of a styrene-butadiene-styrene block copolymer and 2-5 percent of styrene-butadiene rubber. The method is simple and easy in process and liable to realize; as for the prepared high-performance modified asphalt product, compared with the traditional conventional modified asphalt material, the softening point greatly raises, the low-temperature performance is good, the viscosity ratio is also lowered compared with rubber asphalt, the high-performance modified asphalt can be widely used for pavements in various grades by replacing other asphalt materials, and a great quantity of solid wastes are used when the using performance of the pavements is remarkably improved, so that petroleum resources are saved, the environment is protected, the cost is also lowered, and the high-performance modified asphalt is beneficial to being widely popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of asphalt preparation, and in particular relates to a method for producing high-performance modified asphalt by recycling mineral powder, waste tire pyrolysis oil and rubber powder in an asphalt mixing station and a product obtained by implementing the method. Background technique [0002] Since the stones used in the production of asphalt concrete will generate dust during the production process of the crushing plant, the dust adhered to the stones will be transported to the asphalt mixing plant. During the process of asphalt concrete in the asphalt mixing station, stone materials need to be shoveled, conveyed, heated and mixed, and the dust will be discharged to pollute the environment. The mixing station needs to recover the dust through the bag dust removal device. A small part of the recycled dust can be added to the asphalt mixture, and most of it cannot be used and can only be discarded. Improper dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L57/02C08L53/02C08L9/06C08K11/00C08K3/00
CPCC08L95/00C08L2205/035C08L91/00C08L57/02C08L53/02C08L9/06C08K11/005C08K3/00
Inventor 李廷刚张方方李峰杜滨赵晓涛毛彪
Owner 北京中天路业科技有限公司
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