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Conducting asphalt concrete and its prepn process

A technology of asphalt concrete and conductive asphalt, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve problems such as increased resistivity, and achieve the effect of improving road performance and electrical performance

Inactive Publication Date: 2003-03-19
葛洲坝武汉道路材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a material fails, it causes an increase in its electrical resistivity

Method used

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  • Conducting asphalt concrete and its prepn process
  • Conducting asphalt concrete and its prepn process
  • Conducting asphalt concrete and its prepn process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] AC-10I conductive asphalt concrete

[0039] Table 1 Synthetic gradation design pore size of AC-10I asphalt mixture (mm) 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 Synthetic gradation 100.0 98.8 68.9 48.8 37.9 23.0 14.6 7.6 (%)

[0040] Microcrystalline graphite conductive asphalt concrete: asphalt content 7%, microcrystalline graphite content 12%, resistivity 75.4Ω m; crystalline graphite conductive asphalt concrete: bitumen content 6.5%, crystalline graphite content 4%, resistivity 25.3 Ω m .

Embodiment 2

[0042] Superpave12.5 conductive asphalt concrete

[0043] Table 2 Synthetic gradation design pore size (mm) of Superpave12.5 asphalt mixture 19 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 Synthetic gradation (%) 100 96.9 76.7 49.5 32.7 23.3 18.3 13.6 10.8 7.4

[0044] Microcrystalline graphite conductive asphalt concrete: the amount of asphalt is 6.5%, the amount of microcrystalline graphite is 10%, and the resistivity is 63.2Ω·m; the amount of crystalline graphite conductive asphalt concrete: the amount of asphalt is 6.2%, the amount of crystalline graphite is 5%, and the resistivity is 10.5Ω·m .

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Abstract

The conducting asphalt concrete consists of coarse aggregate, fine aggregate, slag powder filler, asphalt, and graphite powder, carbon fiber or steel fiber as conducting material. The preparation process includes heating aggregate and asphalt to 170 deg.c and mixing, mixing with other material, compacting via Marshall process or rolling to form. The present invention improves the electrical performance and other performance of asphalt road.

Description

technical field [0001] The invention relates to a material for significantly improving the electrical conductivity of asphalt concrete and a preparation method thereof, in particular to conductive asphalt concrete and a preparation method thereof. Background technique [0002] At present, asphalt concrete is a mineral mixture composed of coarse aggregate, fine aggregate and filler, which are artificially selected and graded reasonably, and mixed with an appropriate amount of asphalt material to make a uniform mixture, which is obtained after compaction at a suitable temperature. Strength and porosity of road composites. [0003] Asphalt is a complex organic mixture, its resistivity is generally 10 11 ~10 13 Ω·m, while the resistivity of asphalt concrete is about 10 7 ~10 9 Ω·m, both belong to insulator materials. By adding conductive phases to asphalt concrete, such as graphite powder, carbon fiber, steel fiber, etc., the conductivity of asphalt concrete can be improved...

Claims

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Application Information

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IPC IPC(8): C04B26/26
CPCC04B2111/94C04B26/26C04B2111/00612
Inventor 吴少鹏磨炼同水中和林振华
Owner 葛洲坝武汉道路材料有限公司
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