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A heat-resisting and odor-free warm-mix multifunctional asphalt modifier and its preparation method and application

An asphalt modifier and a multi-functional technology are applied in the field of heat-resistant, pure-flavored, warm-mixed multi-functional asphalt modifier and its preparation field, which can solve the problem of reducing the emission of asphalt smoke, resisting heat and cooling, complex asphalt pavement construction process and cost. problems such as high

Active Publication Date: 2020-09-04
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the mixing and paving temperature of asphalt mixture, reduce the emission of asphalt fume and heat resistance and temperature reduction at the same time, it is necessary to use a variety of technical means at the same time, which makes the construction process of asphalt pavement more complicated and more expensive

Method used

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  • A heat-resisting and odor-free warm-mix multifunctional asphalt modifier and its preparation method and application
  • A heat-resisting and odor-free warm-mix multifunctional asphalt modifier and its preparation method and application
  • A heat-resisting and odor-free warm-mix multifunctional asphalt modifier and its preparation method and application

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preparation example Construction

[0035] The present invention provides a preparation method of the heat-resistant, odor-free and warm-mix multifunctional asphalt modifier described in the above technology, comprising the following steps:

[0036] (1) mixing a titanate coupling agent with a silica sol to obtain a mixed sol;

[0037] (2) Mix radium stone powder, mica powder and the mixed sol obtained in the step (1) to obtain a heat-resistant, clean-tasting warm-mix multifunctional asphalt modifier.

[0038] The invention mixes the titanate coupling agent and the silica sol to obtain the mixed sol.

[0039] In the present invention, there is no special requirement on the mixing method of the titanate coupling agent and the silica sol, and a mixing method well known to those skilled in the art can be used.

[0040] In the present invention, the titanate coupling agent has very good hydrolysis stability, and the titanate coupling agent is hydrolyzed in the mixed sol.

[0041] After the mixed sol is obtained, th...

Embodiment 1

[0062] Mix the radium stone powder of 22 mass parts, the 1340 mesh muscovite powder of 21 mass parts, the chelating type titanate coupling agent 311 of 1.8 mass parts and the neutral silica sol of 55.2 mass parts, wherein the mass of silicon dioxide in the silica sol The fraction is 30%, and the heat-resisting and clean-tasting warm-mix multifunctional asphalt modifier is obtained.

Embodiment 2

[0064] Mix the radium stone powder of 21 mass parts, the 1340 mesh muscovite powder of 20 mass parts, the chelating type titanate coupling agent 311 of 1.8 mass parts and the neutral silica sol of 57.2 mass parts, wherein the mass of silicon dioxide in the silica sol The fraction is 30%, and the heat-resisting and clean-tasting warm-mix multifunctional asphalt modifier is obtained.

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Abstract

The invention provides a heat-resisting smell-cleaning and warm-mixing multifunctional asphalt modifier. The modifier comprises, by mass, 20-28 parts of thunderstone power, 19-26 parts of mica powder,1.7-2.1 parts of coupling agent of organic titanate and 44-60 parts of silica sol. The modifier has an obvious smell purification function, the releasing amount of asphalt fume during the mixing process of an asphalt mixing material can be effectively reduced, the temperature of an asphalt road surface can be effectively reduced to reduced the generation high-temperature diseases, the mixing temperature of the asphalt mixing material can be greatly reduced, and energy is saved.

Description

technical field [0001] The invention belongs to the technical field of highway pavement construction, and in particular relates to a heat-resistant, clean-odour, warm-mix multifunctional asphalt modifier and a preparation method thereof. Background technique [0002] Because asphalt pavement has the advantages of short construction period, easy maintenance and comfortable driving, most of the highways in my country are paved with asphalt. In the construction of asphalt pavement, hot mix asphalt mixture road construction technology is widely used because of its excellent performance. However, in order to ensure that the asphalt mixture has good construction workability during the construction process, it needs to be heated to a higher temperature during hot mixing and paving, which not only causes a large amount of energy consumption, but also reduces the quality of the asphalt. Accelerated aging will also produce a lot of asphalt smoke. Asphalt smoke not only pollutes the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/40
CPCC04B40/0039C04B2103/0097C04B14/20C04B24/40C04B14/064C04B14/36Y02A30/30
Inventor 纪小平李向航许新权吴传海吕大伟吕明敏李善强李浩范倩
Owner CHANGAN UNIV
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