Ferrite asphalt mixture with microwave snow melting function and preparation method and application thereof

A technology of asphalt mixture and ferrite, which is applied in the field of transportation engineering, can solve the problems of complex production process of non-traditional deicing agent, increase of soil pH value, decrease of soil enzyme activity, etc., and achieve low technical investment and simple production process , Increase the effect of bonding

Inactive Publication Date: 2020-10-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chloride salt deicing agent has certain damage to transportation infrastructure; the production process of non-traditional deicing agent is complicated and expensive, and flowing into the soil will increase the pH value of the soil and reduce the activity of soil enzymes
The above two snow removal methods have more or less adverse effects on transportation infrastructure, and the cost of snow removal is relatively high. Therefore, it is imminent to develop a new snow removal method

Method used

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  • Ferrite asphalt mixture with microwave snow melting function and preparation method and application thereof
  • Ferrite asphalt mixture with microwave snow melting function and preparation method and application thereof
  • Ferrite asphalt mixture with microwave snow melting function and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Using OGFC-13 gradation, the mass percentages of each raw material are: coarse and fine aggregates account for 87.1% (according to the gradation composition in Table 1), mineral powder accounts for 2.3%, high-viscosity asphalt accounts for 5.0%, zinc-manganese ferrite powder It accounts for 5.3% and fiber accounts for 0.3%. Heat the coarse and fine aggregates to 185°C and asphalt to 180°C, turn on the stirring pot, add coarse and fine aggregates, fibers, and high-viscosity asphalt successively, stir at 185°C for 90s, then add ore powder and zinc-manganese ferrite powder, stirred for 180s, formed the rut plate at 170-175°C, put it into the freezer to reduce the temperature of the rut plate to -20°C, and put it on the rut plate Cover the surface with a layer of snow, put it into a microwave oven and heat it for 5 minutes. The surface temperature of the test rut plate has risen to 5°C, and the surface snow has basically melted, which shows that it can realize the rapid heat...

Embodiment 2

[0050] Using OGFC-13 gradation, the mass percentages of each raw material are: coarse and fine aggregates account for 87.1% (according to the gradation composition in Table 1), mineral powder accounts for 2.3%, high-viscosity asphalt accounts for 5.0%, zinc-manganese ferrite powder It accounts for 5.3% and fiber accounts for 0.2%. Heat the coarse and fine aggregates to 185°C and asphalt to 180°C, turn on the stirring pot, add coarse and fine aggregates, fibers, and high-viscosity asphalt successively, stir at 185°C for 90s, then add ore powder and zinc-manganese ferrite powder, stirred for 180s, at 170-175°C, formed rutting boards, and stood for 24 hours for curing. Using the steady state method to test the thermal conductivity of two rutting plates at normal temperature, it was found that the thermal conductivity of the rutting plates mixed with ferrite increased by 0.46W / (m K) compared with the control group without adding, showing that the present invention can effectively i...

Embodiment 3

[0052] Using OGFC-13 gradation, the mass percentages of each raw material are: coarse and fine aggregates account for 89.5% (according to the gradation composition in Table 1), mineral powder accounts for 2.1%, high-viscosity asphalt accounts for 4.8%, zinc-manganese ferrite powder The fiber accounts for 3.4%, and the fiber accounts for 0.2%. Heat the coarse and fine aggregate to 185°C, heat the asphalt to 180°C, turn on the stirring pot, add coarse and fine aggregate, fiber, and high-viscosity asphalt successively, stir at 185°C for 90s, then add ore powder and zinc manganese ferrite powder, stirring for 180s. The test temperature is -10°C, and the size of the formed specimen is a small beam of 30mm×35mm×250mm. The low-temperature bending test is carried out on the mixed material specimen to test its bending tensile strength and bending stiffness modulus at failure. It is found that adding 3.4% Compared with the blank control group, the bending stiffness modulus of the ferrit...

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Abstract

The invention relates to a ferrite asphalt mixture with a microwave snow melting function and a preparation method and application thereof. The ferrite asphalt mixture comprises the following components in percentage by mass: 85.5-89.5% of coarse and fine aggregates, 2.1%-7.9% of mineral powder; 4.8%-5.3% of asphalt; 3.4%-6.8% of zinc manganese ferrite powder; and 0.01-0.3% of fiber. Asphalt and other mixtures are mixed so that the zinc-manganese ferrite powder is uniformly dispersed in the asphalt mortar and is laid on a roadbed. Compared with the prior art, after the ferrite powder is subjected to microwave heating, microwave electromagnetic energy can be converted into heat energy so that the surface temperature of the asphalt mixture is rapidly and uniformly increased to 5 DEG C from-20 DEG C, and an effective snow melting function can be achieved for an accumulated snow pavement; the asphalt mixture doped with the ferrite powder has the advantages that the heat conductivity coefficient is increased by 0.4-0.8 W / (m.K) compared with the original heat conductivity coefficient, the heat conduction capability of the pavement is effectively improved, and the snow melting function isenhanced.

Description

technical field [0001] The invention relates to the field of traffic and transportation engineering, in particular to a ferrite asphalt mixture with microwave snow-melting function and its preparation method and application. Background technique [0002] The temperature in winter is low, and the road surface is easy to freeze in rainy and snowy weather, which reduces the friction between the road surface and vehicles, which leads to many traffic accidents and brings great economic losses and casualties to the society. [0003] The traditional snow melting methods mainly include mechanical snow removal method and snow melting agent method. For the mechanical snow removal method, large-scale equipment needs to be prepared in advance, and the equipment can only be used for snow removal. For areas with little snowfall, the machines are idle for most of the year, and the storage cost is high. Moreover, the speed of mechanical snow removal is low, and the ability of snow removal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B14/14C04B18/12C04B14/308C04B14/30C04B18/26
Inventor 朱兴一周旭东李峰杜豫川
Owner TONGJI UNIV
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