Asphalt concrete pavement utilizing self-generation of direct piezoelectric effect

A technology of asphalt concrete and piezoelectric effect, which is applied in the field of intelligent transportation systems, can solve the problems of small road lighting, etc., and achieve the effects of reducing harmful gas, alleviating energy shortage, good road performance and anti-fatigue performance

Active Publication Date: 2010-08-04
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

Although lighting power consumption only accounts for 15% to 20% of the country's total power consumption, and the proportion of road lighting

Method used

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  • Asphalt concrete pavement utilizing self-generation of direct piezoelectric effect
  • Asphalt concrete pavement utilizing self-generation of direct piezoelectric effect
  • Asphalt concrete pavement utilizing self-generation of direct piezoelectric effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and Embodiment 2

[0051] The weight ratio of ordinary asphalt concrete in embodiment 1: coarse aggregate 54%, fine aggregate 42%, slag powder 4%, asphalt 4.8%; The weight ratio of ordinary asphalt concrete in embodiment 2: coarse aggregate 54%, fine aggregate Aggregate 42%, mineral powder 4%, asphalt 4.8%, but the piezoelectric self-generating unit of length L=4cm, width W=4cm, thickness T=2cm is embedded in it. Examples 1 and 2 were formed according to the wheel rolling method of T0703-1993 in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering", and the piezoelectric self-generating unit was embedded during forming. The size of the rutting plate specimen is 300mm long x 300mm wide x 50mm high, and the piezoelectric self-generating unit is buried 20mm below the surface. Its electrical properties and road performance indicators are shown in Table 1. It can be seen from Table 1 that after the piezoelectric self-generating unit is embedded in Example 2, its road performa...

Embodiment 3、 Embodiment 4

[0052] Embodiment 3, embodiment 4 and embodiment 5:

[0053] The weight ratio of ordinary asphalt concrete in Examples 3, 4, and 5: 54% of coarse aggregate, 42% of fine aggregate, 4% of mineral powder, and 4.8% of asphalt. The rutting slab specimens were molded according to the wheel rolling method in T0703-1993 in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering", and the piezoelectric self-generating units in the above examples were embedded in the molding. The size of the rut plate specimen is 300mm long x 300mm wide x 150mm high. Example 3 was buried 20 mm below the surface, Example 4 was buried 70 mm below the surface, and Example 5 was buried 130 mm below the surface. Its electrical performance and road performance indicators are shown in Table 2. It can be seen from Table 2 that the power generation of the piezoelectric self-generating unit is related to the depth of burial. The depth increases, the power generation decreases, but the dynam...

Embodiment 6、 Embodiment 7

[0054] Embodiment 6, embodiment 7 and embodiment 8:

[0055] The weight ratio of ordinary asphalt concrete in Examples 6, 7, and 8: 54% of coarse aggregate, 42% of fine aggregate, 4% of mineral powder, and 4.8% of asphalt. The rutting slab specimens were molded according to the wheel rolling method in T0703-1993 in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering", and the piezoelectric self-generating units in the above examples were embedded in the molding. The size of the rutting plate specimen is 300mm long x 300mm wide x 50mm high, and the piezoelectric self-generating unit is buried 20mm below the surface. In embodiment 6, only 80% of the piezoelectric self-generating unit is under pressure; in embodiment 7, only 60% of the piezoelectric self-generating unit is under pressure; in embodiment 8, only 40% of the piezoelectric self-generating unit is under pressure. Its electrical performance indicators are shown in Table 3. It can be seen from ...

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Abstract

The invention discloses an asphalt concrete pavement utilizing self-generation of direct piezoelectric effect. The invention provides asphalt concrete capable of burying and laying a piezoelectric self-generation unit by selection of the raw materials and the design of the mix proportion, and ensures that the road use performance of the asphalt concrete can meet the technical requirements of asphalt, and works out the thickness of a structural layer of the asphalt concrete pavement through simulation. The method comprises the following steps: burying and laying at least one piezoelectric self-generation unit in the structural layer of the asphalt concrete pavement, transforming the mechanical energy generated under the vibration or the extrusion of outside vehicles into electric energy through the piezoelectric self-generation unit and providing the electric energy for an energy collection and illumination device. The invention makes full use of the mechanical energy generated when the automobiles run on the pavement, transforms the mechanical energy into clean electric energy without pollution for roadway illumination, thereby greatly relieving the energy scarcity situation in our country and reducing the emission of harmful gas, even can be a breach for whole energy conservation work in our country, is a novel clean and environment-friendly energy saving mode and has obvious economic and society benefits.

Description

technical field [0001] The invention relates to an intelligent traffic system, in particular to an asphalt concrete pavement that utilizes the positive piezoelectric effect to self-generate electricity. Background technique [0002] The global energy shortage and climate change have become a major concern of the international community, and energy conservation and emission reduction have become the common responsibility of the international community. As the largest developing country in the world, my country is increasingly becoming the object of global attention. By the end of 2008, the installed capacity of power generation equipment in my country had reached 792.53 million kilowatts. Among them, thermal power is 601.32 million kilowatts, accounting for about 75.87% of the total capacity. It can be seen that thermal power occupies a considerable proportion in my country's electric power structure. Such a power structure has led to relatively large energy consumption and...

Claims

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Application Information

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IPC IPC(8): E01C7/18E01C15/00E01C9/00E01D19/12H02N2/18
Inventor 吴少鹏唐宁孙华君陈文林伟周静陈军朱继青
Owner 武汉理工大产业集团有限公司
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