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Electric heat conduction type asphalt concrete and preparation method thereof

An asphalt concrete, conductive technology, applied in the field of asphalt concrete, can solve the problems of limited improvement of electrical and thermal conductivity, uncontrollable fiber state, and difficult dispersion of fibrous substances

Active Publication Date: 2018-06-15
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is only limited to the addition of conductive fibers and other substances in a single state. Fibrous substances are difficult to disperse during the preparation of asphalt concrete, and the final asphalt concrete products also have the problems of uncontrollable fiber state and limited improvement of electrical and thermal conductivity.

Method used

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  • Electric heat conduction type asphalt concrete and preparation method thereof
  • Electric heat conduction type asphalt concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Configure raw materials with the following mass composition:

[0029] 90 parts of aggregate, 5 parts of asphalt, 2 parts of mineral powder, 1 part of aluminum fiber, 3 parts of graphene, 2 parts of rubber powder, and 0.5 part of acrylic resin.

[0030] The specific preparation method of asphalt concrete is as follows:

[0031] 1) Preparation of aluminum fiber-graphene composite conductive material: add graphene raw material in ethanol solvent, stir and disperse to obtain a uniformly dispersed graphene dispersion; disperse aluminum fiber to graphene dispersion, assist ultrasonic dispersion, use Adjust the pH value with ammonia water to be weakly alkaline, put it in a water bath, and keep it warm at 100°C for 60 minutes to obtain a uniformly mixed suspension, dry it, and obtain a precursor; place the precursor in a vacuum furnace and heat it to 800 °C in an inert atmosphere. ℃, heat preservation for 30min, to obtain aluminum fiber-graphene composite conductive material; ...

Embodiment 2

[0035] Configure raw materials with the following mass composition:

[0036] 85 parts of aggregate, 8 parts of asphalt, 2 parts of mineral powder, 2 parts of copper fiber, 3 parts of graphene, 2.5 parts of rubber powder, and 0.6 part of acrylic resin.

[0037] The specific preparation method of asphalt concrete is as follows:

[0038] 1) Preparation of copper fiber-graphene composite conductive substance: add graphene raw material in ethanol solvent, stir and disperse to obtain a uniformly dispersed graphene dispersion; disperse copper fiber to graphene dispersion, assist ultrasonic dispersion, use Ammonia water is used to adjust the pH value to be weakly alkaline, put it in a water bath, and keep it warm at 80°C for 100 minutes to obtain a uniformly mixed suspension, dry it, and obtain a precursor; place the precursor in a vacuum furnace, and heat it to 1000°C in an inert atmosphere. ℃, heat preservation for 60min, to obtain copper fiber-graphene composite conductive materia...

Embodiment 3

[0042] Configure raw materials with the following mass composition:

[0043]95 parts of aggregate, 5 parts of asphalt, 2 parts of mineral powder, 1 part of copper fiber, 1 part of graphene, 2 parts of rubber powder, and 0.5 part of acrylic resin.

[0044] The specific preparation method of asphalt concrete is as follows:

[0045] 1) Preparation of copper fiber-graphene composite conductive substance: add graphene raw material in ethanol solvent, stir and disperse to obtain a uniformly dispersed graphene dispersion; disperse copper fiber to graphene dispersion, assist ultrasonic dispersion, use Ammonia water is used to adjust the pH value to be weakly alkaline, put it in a water bath, and keep it warm at 90°C for 120 minutes to obtain a uniformly mixed suspension, dry it, and obtain a precursor; place the precursor in a vacuum furnace, and heat it to 900°C in an inert atmosphere. ℃, heat preservation for 50min, to obtain copper fiber-graphene composite conductive material;

...

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Abstract

The invention discloses electric heat conduction type asphalt concrete which is characterized by being prepared from the following raw materials in parts by weight: 85-95 parts of aggregate, 4-8 partsof asphalt, 2-6 parts of ore powder, 1-3 parts of a metal fiber, 1-3 parts of graphene, 2-3 parts of rubber powder and 0.5-1 part of an acrylic resin. Through water bath constant-temperature heatingand self-assembling of metal fibers with graphene, chemical bond connection of active groups of the metal fibers and the graphene is achieved, and a conductive network in inter-connection is formed inthe asphalt concrete. By adopting the electric heat conduction type asphalt concrete, the resistance can be reduced to 100omega*m or lower.

Description

technical field [0001] The invention relates to the field of asphalt concrete, in particular to a conductive asphalt concrete. Background technique [0002] Asphalt concrete is artificially selected mineral materials with a certain gradation composition, crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., mixed with a certain proportion of road asphalt materials under strictly controlled conditions of the mixture. Ordinary asphalt concrete is generally a poor conductor of heat and electricity. According to the theoretical basis of conductive polymers, it is expected to obtain electric and heat conductive asphalt concrete by mixing appropriate conductive materials. [0003] Conductive and heat-conducting asphalt concrete has the ability to sense and convert heat and electricity, which makes it have special functions. On the one hand, the relationship between the change in road performance and the change in electrical resistance can be used to judge ...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B111/94
CPCC04B26/26C04B2111/94C04B14/48C04B14/024C04B24/24C04B24/2641C04B14/28C04B14/06C04B18/12
Inventor 谢晶邵腊庚黄拓黄梅芳金娇
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY