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High-temperature-stable type modified asphalt and preparation method thereof

A modified asphalt, high-temperature stable technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of modified asphalt stability, elastic recovery can not better meet people's requirements, and achieve low cost, preparation The method is simple and the effect of improving flexibility

Inactive Publication Date: 2018-07-20
SHANDONG XINGHUO SCI TECH INSTITYTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are many designs aimed at improving the high stability of asphalt, and most of them improve the characteristics of asphalt by modifying the asphalt. To better meet people's requirements, therefore, how to improve these characteristics of modified asphalt becomes particularly important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-temperature stable modified asphalt, comprising the following components in parts by weight: 58 parts of base asphalt, 18 parts of rubber powder, 10 parts of natural rubber, 5 parts of aromatic light oil, 3 parts of polyester fiber, polyethylene 6 parts, 1 part sulfur.

[0022] The base asphalt is No. 90 heavy traffic asphalt.

[0023] The rubber powder is bias tire rubber powder, the rubber powder is passed through a 60-mesh sieve, and the rubber powder under the sieve is used.

[0024] The preparation method of above-mentioned high-temperature stable type modified asphalt, the steps are as follows:

[0025] (1) Heat the base asphalt to 205°C, then put it into the mixing tank, and put the rubber powder and natural rubber into the mixing tank at the same time, and keep stirring for 35 minutes to obtain the mixture I, which is set aside;

[0026] (2) Put aromatic light oil, polyester fiber and polyethylene into the stirring tank respectively, and carry out one s...

Embodiment 2

[0029] A high-temperature stable modified asphalt, comprising the following components in parts by weight: 50 parts of base asphalt, 15 parts of rubber powder, 7 parts of natural rubber, 4 parts of aromatic light oil, 2 parts of polyester fiber, polyethylene 5 parts, 0.5 parts of sulfur.

[0030] The base asphalt is No. 90 heavy traffic asphalt.

[0031] The rubber powder is radial tire rubber powder, the rubber powder is passed through a 60-mesh sieve, and the rubber powder under the sieve is used.

[0032] The preparation method of above-mentioned high-temperature stable type modified asphalt, the steps are as follows:

[0033] (1) Heat the base asphalt to 200°C, then put it into the mixing tank, and put the rubber powder and natural rubber into the mixing tank at the same time, and keep stirring for 30 minutes to obtain the mixture I, which is set aside;

[0034] (2) Put the aromatic light oil, polyester fiber and polyethylene into the stirring tank respectively, and carr...

Embodiment 3

[0037] A high-temperature stable modified asphalt, comprising the following components in parts by weight: 65 parts of base asphalt, 20 parts of rubber powder, 13 parts of natural rubber, 6 parts of aromatic light oil, 4 parts of polyester fiber, polyethylene 7 parts, sulfur 1.5 parts.

[0038] The base asphalt is No. 90 heavy traffic asphalt.

[0039] The rubber powder is bias tire rubber powder, the rubber powder is passed through a 60-mesh sieve, and the rubber powder under the sieve is used.

[0040] The preparation method of above-mentioned high-temperature stable type modified asphalt, the steps are as follows:

[0041] (1) Heat the base asphalt to 210°C, then put it into the mixing tank, and put the rubber powder and natural rubber into the mixing tank at the same time, and keep stirring for 40 minutes to obtain the mixture I, which is set aside;

[0042] (2) Put the aromatic light oil, polyester fiber and polyethylene into the stirring tank respectively, and carry ou...

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Abstract

The invention provides high-temperature-stable type modified asphalt. The high-temperature-stable type modified asphalt is prepared from the following components: matrix asphalt, rubber powder, natural rubber, aromatic lightweight oil, polyester fibers, polyethylene and sulfur; a preparation method comprises the following steps: (1) heating the matrix asphalt to 200 to 210 DEG C; then adding the matrix asphalt into a stirring tank; adding the rubber powder and the natural rubber into the stirring tank, and continually stirring for 30 to 40min to obtain a mixture I; (2) adding the aromatic lightweight oil, the polyester fibers and the polyethylene into the stirring tank respectively and carrying out primary stirring; when the temperature in the stirring tank is 150 to 160 DEG C, adding thesulfur and carrying out secondary stirring to obtain a mixture II; (3) pumping the mixture II into a development tank, wherein the fermentation time is 45 to 55min; cooling to obtain the high-temperature stable type modified asphalt. The high-temperature stable type modified asphalt provided by the invention has the advantages of high stability and good elastic recovery; the preparation method issimple, has an easy-to-control process and is applicable to popularization and application.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to a high-temperature stable modified asphalt and a preparation method thereof. Background technique [0002] With the rapid development of our country's economy, the number of vehicles in our country continues to increase, resulting in a rapid increase in traffic volume. Therefore, the performance requirements for asphalt pavement are also getting higher and higher. In the prior art, there are many designs aimed at improving the high stability of asphalt, and most of them improve the characteristics of asphalt by modifying the asphalt. To better meet people's requirements, therefore, how to improve these characteristics of modified asphalt becomes particularly important. Contents of the invention [0003] In view of this, the present invention provides a high-temperature stable modified asphalt and a preparation method thereof. The high-temperature stable modified aspha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L7/00C08L67/00C08L23/06C08K3/06
CPCC08L95/00C08L2201/08C08L2205/035C08L2205/16C08L21/00C08L7/00C08L67/00C08L23/06C08K3/06
Inventor 张成如
Owner SHANDONG XINGHUO SCI TECH INSTITYTE
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