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Layer-distributed steel fiber conductive asphalt concrete

A technology of asphalt concrete and conductive asphalt, which is applied to the coagulation pavement, roads, pavement details and other directions of on-site paving, can solve the problems of high cost and restrict the development of steel fiber reinforced concrete pavement, etc., to improve driving safety and reduce road maintenance. Cost, Effects of Increased Stability and Durability

Active Publication Date: 2011-12-14
武汉理工大产业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high cost, the development of steel fiber concrete pavement is restricted to a certain extent.

Method used

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  • Layer-distributed steel fiber conductive asphalt concrete
  • Layer-distributed steel fiber conductive asphalt concrete
  • Layer-distributed steel fiber conductive asphalt concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the layer-distributed steel fiber conductive asphalt concrete includes asphalt concrete surface layer 1, steel fiber layer 4, and lower bearing layer 2, asphalt concrete surface layer 1, steel fiber layer 4, and lower bearing layer 2 from top to bottom. Arrangement (bottom bearing layer 2, steel fiber layer 4, asphalt concrete surface layer 1 are arranged sequentially from bottom to top), and electrodes 3 are embedded in the steel fiber layer (stainless steel electrodes with a length of 300mm and a width of 10mm are arranged in parallel; electrodes and external power supply After connection, the electrothermal effect is used to remove ice and snow in cold seasons); the steel fiber layer is composed of steel fibers and conductive emulsified asphalt, the steel fibers are evenly laid on the surface of the lower bearing layer by spreading, and the conductive emulsified asphalt (sprayed) is sprayed on the steel fibers After the steel fibers, spray...

Embodiment 2

[0036] Such as figure 1 As shown, the layer-distributed steel fiber conductive asphalt concrete includes asphalt concrete surface layer 1, steel fiber layer 4, and lower bearing layer 2, asphalt concrete surface layer 1, steel fiber layer 4, and lower bearing layer 2 from top to bottom. Arrangement, electrodes 3 are buried in the steel fiber layer (after the electrodes are connected to the external power supply, the electrothermal effect is used to deice and melt snow in cold seasons); the steel fiber layer is composed of steel fiber and conductive emulsified asphalt, and the steel fiber is laid evenly by spreading On the surface of the lower bearing layer, conductive emulsified asphalt is sprayed on the steel fibers (after the steel fibers are spread, conductive emulsified asphalt is sprayed to form an interpenetrating network structure), and the amount of steel fibers spread is 170g / m 2 , the spreading amount of conductive emulsified asphalt is 0.6L / m 2 .

[0037] The ste...

Embodiment 3

[0047] Such as figure 1 As shown, the layer-distributed steel fiber conductive asphalt concrete includes asphalt concrete surface layer 1, steel fiber layer 4, and lower bearing layer 2, asphalt concrete surface layer 1, steel fiber layer 4, and lower bearing layer 2 from top to bottom. Arrangement, electrodes 3 are buried in the steel fiber layer (after the electrodes are connected to the external power supply, the electrothermal effect is used to deice and melt snow in cold seasons); the steel fiber layer is composed of steel fiber and conductive emulsified asphalt, and the steel fiber is laid evenly by spreading On the surface of the lower bearing layer, conductive emulsified asphalt is sprayed on the steel fibers (after the steel fibers are spread, the conductive emulsified asphalt is sprayed immediately to form an interpenetrating network structure), and the amount of steel fibers spread is 330g / m 2 , the spreading amount of conductive emulsified asphalt is 0.8L / m 2 . ...

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Abstract

The invention relates to a steel fiber asphalt concrete. The layer-distributed steel fiber conductive asphalt concrete is characterized in that it includes an asphalt concrete surface layer, a steel fiber layer, and a lower bearing layer, and the asphalt concrete surface layer, steel fiber layer, and lower bearing layer are arranged in sequence from top to bottom, and the steel fiber layer Electrodes are buried in the middle; the steel fiber layer is composed of steel fiber and conductive emulsified asphalt, the steel fiber is evenly laid on the surface of the lower bearing layer by spreading, the steel fiber is sprayed with conductive emulsified asphalt, and the spreading amount of the steel fiber is 170 ~ 330g / m2 , The spreading amount of conductive emulsified asphalt is 0.6~0.8L / m2. The invention has the characteristics of low cost, simple construction, easy quality control, and good electrical conductivity. At the same time, the high-temperature stability and low-temperature crack resistance are improved, and can be used for self-healing or thermal repair of asphalt pavement deicing and snowing and asphalt pavement diseases. .

Description

technical field [0001] The invention relates to a steel fiber asphalt concrete, in particular to a layer-distributed steel fiber conductive asphalt concrete. Background technique [0002] The road performance and safety of asphalt concrete pavement have been paid close attention to by people. Asphalt concrete pavement has the advantages of low fuel consumption, low noise, good skid resistance, and low vehicle wear for driving. It has been widely used in major roads such as airport runways, bridge deck pavements, expressways, and urban pavements. Asphalt pavement has accounted for more than 80% of the roads built in the world; more than 90% of my country's expressways are asphalt pavement. But asphalt is a typical viscoelastic material, which tends to become brittle at low temperature and sticky and flow at high temperature. Therefore, when the temperature is high in summer, the temperature of the asphalt pavement can reach 70°C, and rutting, wave movement and other phenome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C11/26E01C7/18
Inventor 吴少鹏陈明宇王虹韩君张园张吉哲束冬林
Owner 武汉理工大产业集团有限公司
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