KR950014587B1 - Heating device & repair, re-pavement method of asphalt concrete road - Google Patents

Abstract

The method of repair and repavement of asphalt concrete comprises a 1st step of heating the asphalt concrete into the required depth by penetrating the electronic wave generated from a magnetron, a 2nd step of applying a milling work or a remixing work to the heated asphalt concrete and a 3rd step of pressing it with a roller.

Description

Heating device, repair and repaving method of asphalt large concrete pavement

1 is a schematic view showing a heating apparatus provided by the present invention.

2 is a diagram showing an electromagnetic wave generating unit.

3 is a cross-sectional view taken along the line A-A 'of FIG.

* Explanation of symbols for the main parts of the drawings

1: Electromagnetic wave generator 2: Boom

3: power unit 4: wheels

5: milling and remixing unit 7: magnetron

8: flat plate 9: cover

10: link

The present invention relates to a heating apparatus for asphalt concrete pavement, and a repair and repaving method. The asphalt contained in the asphalt concrete is uniformly heated when the sofa is repaired, road calibration, excavation or repaving of the asphalt concrete pavement. In addition, the present invention relates to an apparatus for heating paved asphalt concrete using electromagnetic waves generated from magnetrons and a repair and repaving method so as not to degrade the quality of asphalt.

Roads paved with a mixture of asphalt and aggregates are called asphalt concrete pavements and can be easily seen from around.

Asphalt concrete pavements are subjected to repeated heavy loads, causing cracks or irregularities in the asphalt concrete pavements.

In general, when cracks or unevenness occurs on asphalt concrete pavement, a certain thickness of asphalt concrete pavement is dug, and then a new heated asphalt mixture is laid and compacted into rollers.

However, it is not easy to dig asphalt concrete in cracked or uneven areas (hereinafter referred to as "repair area") and break down the pavement area by mechanical shock, When removing asphalt concrete, unnecessary parts are removed. Therefore, the work speed is slow and a lot of new asphalt and aggregates are required, resulting in many economic losses.

Therefore, in order to solve the above problems, the passion thickness of the asphalt concrete is melted and removed by applying heat generated by a gas or oil heater to the surface of the asphalt concrete in the maintenance area. Rather than crushing asphalt concrete, the process is faster and can significantly reduce damage to the machine.

However, it takes a lot of time to heat the asphalt concrete in the area to be repaired to a certain depth by the heating device, and the asphalt of the coated surface is applied with too much heat, which causes the asphalt to burn out. It becomes a factor. Thereby removed asphalt concrete. The debris becomes difficult to reuse and is eventually thrown away as waste, which is a factor that greatly pollutes soil and water as well as waste of resources.

Therefore, in order to solve the above problems, the present invention utilizes electromagnetic waves generated from the magnetron to heat the paved asphalt concrete without heating at the surface and to uniformly heat only asphalt at a certain depth with the road surface. Its purpose is to provide asphalt concrete heaters and repair and repaving methods.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a view showing an apparatus for heating asphalt concrete paved by the present invention, the electromagnetic wave generator 1 having a predetermined area connected to the front of the power unit 3 by the boom 2, asphalt pavement road It is configured to correspond to the (20) surface, the power unit 3 is configured with a drive unit for moving the wheels 4 and an inverter that can generate the required power, milling the rear of the power unit 3 Alternatively, the remix device unit 5 is configured to mill or remix the asphalt concrete of the heated pavement.

The electromagnetic wave generator 1 is movable up and down by the boom 2, and the power generated by the power generator of the power unit 3 is supplied to a plurality of magnetron electrodes mounted to the electromagnetic wave generator 1; When electromagnetic waves generated from the magnetron are applied to the asphalt concrete pavement, the asphalt is heated, while the electromagnetic waves are reflected from the aggregate surface to reach the predetermined depth of the asphalt, thereby simultaneously reaching the predetermined depth of the asphalt concrete at the aggregate surface. Only the attached asphalt can be selectively heated to melt hard asphalt concrete.

For reference, the asphalt is easy to work because the fluidity is improved when it is 70 ~ 90 ℃.

In the following milling or remixing device unit 5, if the asphalt concrete having good fluidity is milled or remixed while adding an additive (asphalt, etc.) from the outside and compacted using a roller, the asphalt concrete pavement can be repaired and reworked at high speed. Packaging can be completed.

FIG. 2 is a view showing the electromagnetic wave generator 1 of FIG. 1, wherein the edge of the flat plate 8 is bent downward, and a plurality of magnetrons 7 are mounted on a predetermined portion of the flat plate 8, but the electromagnetic wave is downward. Mounted to be scanned, the cover 9 is provided on the upper surface of the plate 8, the cover 9 is provided with a connecting ring 10 connected to the boom 2, the plate 8 and the cover 9 Is bound at the edge.

Although not shown in the drawing, wires through which power is transferred from the inverting device of the power unit are respectively connected to the electrodes of the magnetron 7.

3 is a cross-sectional view taken along line A-A 'of FIG. 2, in which the magnetron 7 is mounted on the plate 8, and the edge of the plate 8 is bent downward, which is generated in the magnetron 7; This prevents the electromagnetic waves from going out.

According to the present invention described above has the following effects.

First, compared to the conventional heating method by uniformly heating a certain thickness of the asphalt concrete pavement road can maintain the cracking properties of asphalt concrete quality.

Second, it is possible to heat the asphalt concrete to the required temperature without fear of deterioration of the asphalt caused in the conventional heating process.

Third, when the asphalt concrete is heated to a constant temperature, it can be heated at a much faster time (conventionally about 1/5 to 1/10) than the conventional heating method by external heat.

Fourth, since only asphalt particles are selectively heated, waste of energy can be reduced, and asphalt concrete can be quickly heated with little energy.

Fifth, it is possible to reduce environmental pollution by not discarding waste asphalt concrete.

Sixth, it is possible to save foreign currency by preventing waste of resources and recycling of crude oil by recycling waste asphalt concrete.

Claims (3)

A method of repairing and repaving asphalt concrete on a road paved with asphalt concrete, the method comprising: injecting electromagnetic waves generated from a magnetron on an aging asphalt concrete pavement to heat the asphalt concrete to a required depth of the pavement; Milling or remixing the heated asphalt concrete, and the asphalt concrete pavement repair and repaving method comprising the step of compacting the asphalt concrete with a roller. A power unit having a power generating device for generating electric power and a driving device for moving a wheel located at a lower portion thereof, and connected to the front of the power unit so as to be able to move up and down through a boom and correspond to a predetermined area of an asphalt concrete pavement. A plate member provided, a plurality of magnetrons on the plate member, an electromagnetic wave generation unit for heating asphalt by electromagnetic waves generated from the magnetron by applying electric power from the power generation device to the magnetron, and behind the power unit. An asphalt concrete pavement repair and resurfacing device comprising a milling or remixing device unit for milling or remixing asphalt concrete that is connected and heated to pave the asphalt concrete. 4. The asphalt concrete pavement of claim 3, wherein a peripheral edge of the plate member on which the magnetron is mounted is bent downward, and a cover having a connecting means connected to the boom is formed on the upper surface of the plate member. Repair and repackaging unit.