Modified asphalt mixture and preparation method thereof

A modified asphalt and mixture technology, which is applied in the field of modified asphalt mixture and its preparation, can solve problems such as resource scarcity and ecological damage, and achieve the effects of reducing early damage, prolonging service life, and enhancing the performance of asphalt

Active Publication Date: 2021-11-05
湖南立新硅材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single type of stone mining is likely to lead to a series of problems such as resource scarcity and ecological damage

Method used

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  • Modified asphalt mixture and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of modified asphalt mixture comprises the following steps:

[0041] Step 1, adding 88 parts of aggregate and 10 parts of filler into the stirring device for dry mixing;

[0042] Step 2: Transport 2 parts of epoxy-modified asphalt (a kind of thermosetting resin-modified asphalt) from the asphalt insulation tank 1 to the mixing device, and fully mix it so that the surface of the aggregate and filler forms a first layer of heat-fixing modification Asphalt film to obtain a thermosetting modified asphalt premix;

[0043] Step 3: Transport 4 parts of SBS modified asphalt (one of the SBS polymers) from the asphalt insulation tank 2 to the mixing device for full mixing, so that a second layer of thermoplastic modified asphalt film is formed on the surface of the aggregate and filler.

Embodiment 2

[0045] Step 1. Add 94 parts of aggregate and 5 parts of filler into the stirring device for dry mixing;

[0046] Step 2: Transport 1 part of epoxy-modified asphalt from the asphalt insulation tank 1 to the mixing device, and fully mix it so that the first layer of thermally fixed modified asphalt film is formed on the surface of the aggregate and filler to obtain a thermosetting modified asphalt premix ;

[0047] Step 3: Transport 8 parts of SBS modified asphalt from the asphalt insulation tank 2 to the mixing device for full mixing, so that a second layer of thermoplastic modified asphalt film is formed on the surface of the aggregate and filler.

Embodiment 3

[0049] Step 1. Add 98.5 parts of aggregate and 1 part of filler into the mixing device for dry mixing;

[0050] Step 2: Transport 0.5 parts of epoxy-modified asphalt from the asphalt insulation tank 1 to the mixing device, and fully mix it so that the first layer of thermally fixed modified asphalt film is formed on the surface of the aggregate and filler to obtain a thermosetting modified asphalt premix ;

[0051] Step 3: Transport 10 parts of SBS modified asphalt from the asphalt insulation tank 2 to the mixing device for full mixing, so that a second layer of thermoplastic modified asphalt film is formed on the surface of the aggregate and filler.

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Abstract

The invention discloses a modified asphalt mixture and a preparation method thereof. The preparation method comprises the following steps: step 1, adding aggregate and filler into an asphalt mixing device for dry mixing; step 2, adding thermosetting modified asphalt into the asphalt mixing device, and fully mixing to form a first layer of thermosetting modified asphalt film on the surfaces of the aggregate and the filler, so as to obtain a thermosetting modified asphalt premix; and step 3, uniformly mixing the thermoplastic modified asphalt with the thermosetting modified asphalt premix obtained in the step 2, so as to form a second layer of thermoplastic modified asphalt film on the surfaces of the aggregate and the filler. The pavement performance of the asphalt mixture is improved, the service life is prolonged, ecological damage caused by the fact that only single basalt stone can be adopted at present is avoided, and the transportation cost is reduced.

Description

technical field [0001] The application relates to the technical field of preparation of road asphalt pavement materials, in particular to a modified asphalt mixture and a preparation method thereof. Background technique [0002] The highway construction in our country is changing with each passing day. Asphalt pavement, as the main pavement form of high-grade highways, has shown superior functionality. However, with the continuous appearance of early diseases such as water damage, rutting and cracks on the pavement, it is often difficult for the asphalt pavement to reach its design life. In order to prolong the service life of the asphalt pavement, improve the service quality of the pavement, and reduce the maintenance cost, it is imperative to adopt effective modification and enhancement methods and means to improve the quality of the asphalt mixture to meet the requirements of the pavement. [0003] Asphalt mixture is a composite material mainly composed of asphalt, aggre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B18/26C04B14/02
Inventor 刘立新钟勇
Owner 湖南立新硅材料科技有限公司
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