JP4500519B2 - Asphalt sheet and pavement / repair method using asphalt sheet - Google Patents

Description

The present invention relates to an asphalt sheet and a pavement / repair method using the asphalt sheet , and more particularly to a technique for improving work efficiency in a pavement / repair work such as a road or a roof of a building and extending the life of a pavement / repair part.

When a crack enters an asphalt pavement or a concrete paved road, the crack grows and grows in many cases. For this reason, generally, before a crack grows, asphalt material is applied to a cracked road or the like, and repair work for the purpose of crack waterproofing is performed.
Further, if a step occurs at the joint of the pavement and the like, it causes noise and vibration. Therefore, repair work is performed to apply the asphalt material to the step and remove the step.
In addition, paving work is also carried out by paving roads using asphalt material.
Conventionally, asphalt materials used in pavement / repair work (paving work and / or repair work) have been as follows.

For example, Patent Document 1 discloses a road pavement manufacturing method in which bron asphalt is used as a base material, and lubricating oil or lubricating oil waste oil liquid, semi-bron asphalt, slaked lime, and fine particles of steel slag are added thereto and heated and kneaded. It is disclosed.
According to this technology, it was possible to provide a road pavement material that has excellent cold resistance and wear resistance and can prevent a decrease in slip resistance over a long period of time.

By the way, the road pavement material is manufactured as a block-shaped lump, melted in advance in a kettle, and sprayed on the road surface in a liquid state.
That is, in the method of using this block-shaped road pavement material, first, a dedicated melting pot is mounted on the truck, and the road pavement material is melted using propane gas, kerosene or the like as fuel. Then, the vehicle is moved to a construction site where pavement and repair are performed, and a liquid road pavement material is drawn into a container and sprayed on a repaired portion where a pavement surface or a crack is generated, thereby performing rubbed pavement.

Japanese Patent No. 2115662 (Claim 1)

As an asphalt sheet formed in a sheet shape, asphalt sheet 100 with a nonwoven fabric has been put to practical use as shown in FIG.
This asphalt sheet 100 is a multilayer sheet in which a silica sand layer 101, a special rubberized asphalt compound layer 102, an asphalt impregnated polyester nonwoven fabric 103, and a special rubberized asphalt compound layer 104 are laminated, and a special rubberized asphalt compound as an adhesive layer. This is a pressure-bonding type sheet having the layer 104.

As shown in FIG. 2B, the asphalt sheet 100 is used by cutting the pavement surface to expose the existing pavement road 120 and filling the cracks 121 on the existing pavement road 120 with the joint material 122 to the back. .
Next, if necessary, a primer (not shown) is applied to the crack 121, the asphalt sheet 100 is stuck on the crack 121, and the pressure is pressed by a tire roller or the like (not shown).
Subsequently, after completion of the rolling, an overlay layer 123 made of asphalt or concrete is laminated.

However, since the road pavement disclosed in Patent Document 1 is maintained in a molten state by a dedicated melting kettle while moving between a plurality of work sites, fuel costs such as propane gas and kerosene cannot be reduced. There was a problem.
In addition, road pavement has a low heat transfer coefficient and has a block-like shape. Therefore, even if an attempt is made to melt the road pavement in an empty dedicated melting kettle, a large amount of fuel is required until it accumulates. . For this reason, there is a problem in that maintenance is usually performed so that the accumulation does not disappear, and the fuel cost cannot be reduced accordingly.
Furthermore, the operation of transporting the melted road pavement material to the pavement place is a dangerous operation and needs to be improved.

In particular, in road repairs, there are many repair sites, and the amount of road pavement material used at one repair site is extremely small compared to the amount used at normal road pavement sites. Therefore, the method of repairing while melting the road pavement material with the above-mentioned dedicated melting pot is to waste propane gas etc. with the dedicated melting pot, and also to run with the heavy-duty dedicated melting pot mounted on the truck Was wasting gasoline.
Further, in the above repair, there is a problem that the melted road pavement gas is always generated from the dedicated melting kettle while the truck moves in a large number of repair sites, which causes a bad odor to the external environment.
Furthermore, since road repairs are performed by a small number of workers compared to road pavement, it is necessary to secure skilled workers who can apply melted road pavement materials safely and well, and workers who manage dedicated melting pots. There is a problem that it is necessary and work efficiency cannot be improved.

The asphalt sheet 100 is one of a plurality of repair materials used for crack repair, and the asphalt sheet 100 alone cannot perform crack repair. That is, the crack repairing method using the asphalt sheet 100 includes the operation of filling the crack 121 with the joint material 122 to the back, the operation of applying a primer (not shown), the operation of attaching the asphalt sheet 100, the rolling operation, and the overlay layer. There is a problem in that it is necessary to perform the operation of stacking 123, a plurality of repair materials are required, and the number of work steps is large, so that the cost cannot be reduced.
Furthermore, if the crack 121 is not filled with the joint material 122 for the purpose of reducing the work process, a gap remains in the crack 121 even if the asphalt sheet 100 is rolled, and the road structure is damaged by the influence of the gap. I was worried.

  In addition, a refurbishment work in which a surface portion of a road is scraped off by a dedicated cutting machine and a new surface portion is laid is performed as a general construction method. At this time, the asphalt-impregnated polyester nonwoven fabric 103 contained in the asphalt sheet 100 is entangled with the cutter portion of the dedicated cutting machine, and there is a problem that the cutting efficiency is lowered or the dedicated cutting machine breaks down.

  In response to the above problems, the present inventor is not an idea on the extension of processing technology or combination technology in the history of the development of road pavement materials, but grasps the characteristics of pavement and repair, and from the viewpoint of improving energy saving and work efficiency. Although it is a simple structure and method lacking in the prior art through creative ideas, it has led to the invention of an extremely useful asphalt sheet and the like.

In order to solve the above problems, the present invention uses an asphalt sheet and an asphalt sheet that are excellent in energy saving, environmental hygiene and workability, and can perform pavement / repair excellent in durability and vibration absorption . The purpose is to provide pavement and repair methods .

In order to achieve this object, the asphalt sheet of the present invention uses Bron asphalt having a penetration of 10 to 20 as a base material, and a stone powder material having a diameter of about 0.074 mm to 1.0 mm as an additive. The Bron asphalt, the stone powder material and the lubricating oil material are contained in a weight content of 60% to 75%, 20% to 25%, 5% to 15%, and formed into a sheet shape .

Moreover, the asphalt sheet | seat of this invention is set as the structure using the used diesel engine oil as said lubricating oil material .

Further, the pavement / repair method using the asphalt sheet of the present invention is a pavement / repair method using the asphalt sheet, and the step of placing and / or inserting the asphalt sheet in a concave pavement / repair location. And the step of directly heating and melting the asphalt sheet and filling the melted asphalt sheet into the concave pavement / repair site .

Further, pavement repair method using asphalt sheet of the present invention is a pavement repair method using the asphalt sheet, heating the emulsion to a coating emulsion the pavement repair surface, the asphalt sheet Is placed on the pavement / repair surface, the step of directly heating and melting the asphalt sheet, and after spraying and / or spraying aggregate on the asphalt sheet, further heating the asphalt sheet , Submerging at least an upper part of the molten asphalt sheet .

In addition, when manufacturing the asphalt sheet of the present invention, the step of adding a stone powder material and a lubricating oil material to Bron asphalt as a base material, heating and kneading, and the heat-kneaded asphalt material on the release sheet It is manufactured by a method having a step of applying and forming into a sheet and a step of cooling the asphalt material formed in the sheet.

According to the asphalt sheet according to the present invention, the asphalt can be laid by a simple operation of placing and heating the asphalt sheet on the pavement, and the workability of the pavement work can be greatly improved. . Furthermore, since the asphalt sheet can be cut and used according to the repair location, for example, repair work on a road surface with a step or a crack can be performed efficiently.
In addition, since a core material such as non-woven fabric is not used, the asphalt sheet placed on the pavement / repair site can be heated to penetrate the asphalt sheet to the back of the gap and the like, and the waterproofness can be improved. . Furthermore, it is possible to prevent such a problem that the cutter part of the dedicated cutting machine is damaged.
In addition, asphalt sheets do not require mixing work or curing time compared to two-component mixed repair materials, so that construction time can be shortened and no remaining use occurs. Furthermore, it is superior in adhesion and sound deadening compared to a hard and brittle two-component mixed repair material.

Further, according to the method of manufacturing the asphalt sheet as described above, it is possible to easily manufacture the asphalt sheet.
Furthermore, by using a release sheet, it is possible to prevent the asphalt sheets from being joined to each other, and to improve the handleability of the asphalt sheet.

Further, according to the pavement / repair method using the asphalt sheet according to the present invention, a gas burner or the like can be used instead of the dedicated melting pot, and the level difference and cracks on the road surface can be repaired. Therefore, the fuel for melting the asphalt sheet and the fuel for transporting the dedicated melting pot by truck can be reduced, and energy saving can be achieved.
Further, only the necessary asphalt sheet can be used by cutting, and the cut end asphalt sheet can be recovered and regenerated, so that the asphalt sheet is not wasted and resources can be effectively used. Moreover, since only the asphalt sheet to be used is heated, the fuel required for heating can be reduced.
In addition, the use of aggregates can improve the durability of the laid asphalt, and by preventing the aggregate from entering the lower part of the asphalt, adhesion to the laying surface and vibration absorption It is possible to prevent problems such as deterioration of the performance.

[Asphalt sheet]
The asphalt sheet according to the present invention is an asphalt sheet formed into a sheet shape containing bron asphalt as a base material and a stone powder material and a lubricating oil material as additives.
Bron asphalt is an asphalt that has been oxidized, polymerized and condensed according to specifications and is the main component of the asphalt sheet. In addition, bron asphalt has a weight content of about 45% to 85%, and is included in a ratio that the sum of the weight content of the stone powder and the lubricating oil material is 100%.
Generally, it is preferable to use a bronze asphalt having a penetration of 10 to 20.

As the stone powder material, fine stones having a substantially spherical diameter of about 0.074 mm to 1.0 mm are used, and the weight content is about 10% to 30%.
This stone powder (calcium carbonate) material is alkaline, and when mixed with acidic bron asphalt, the asphalt sheet becomes neutral, embrittlement is reduced, durability can be improved, and strength can be improved. It also has the effect of preventing wear.
Further, the material is not limited to the above stone powder material as long as it is alkaline and has an effect of preventing wear, and other materials such as glass powder can also be used. When glass powder is used, light light is reflected on the glass powder, so when used in places such as a center line or a stop line on the road, the line is conspicuous. In addition, what crushed the glass product which improved can be used as glass powder, and it is useful also for the process of waste glass.

The lubricating oil material is diesel engine oil, and has a weight content of 5% to 25%. Generally, used diesel engine oil is used. This lubricating oil material has the property that the viscosity change is small with respect to the temperature change, and can improve the temperature-sensitive characteristics of the asphalt sheet.
Note that the lubricating oil material is not limited to diesel engine oil, and may be any material that does not significantly affect the viscosity change due to a temperature difference. In particular, it is preferable to use a material having a viscosity index of about 100 to 150.

The bronze asphalt, stone powder material, and lubricating oil material are kneaded and formed into a sheet shape in a uniformly mixed state.
Here, in the asphalt sheet, the weight content of bron asphalt, stone powder material and lubricating oil material may be about 60% to 75%, 20% to 25%, and 5% to 15%, respectively. By having an appropriate mechanical strength and elasticity, it can be easily formed into a sheet shape without using a core material such as a nonwoven fabric or a woven fabric.

The shape, size and thickness of the asphalt sheet is a square sheet having a side of about 20 to 50 cm and a thickness of about 2 to 4 mm. In this way, the asphalt sheet can be easily carried and can be easily cut to a desired size. The asphalt sheet is not limited to the above shape, size, and thickness, and various shapes, sizes, and thicknesses can be selected depending on the pavement / repair location.
For example, the shape of the asphalt sheet can be any shape and thickness depending on the shape of the pavement / repair site. Moreover, even if it is a rectangular shape, it can also be set as a wide shape or an elongate shape.

Thus, according to the asphalt sheet of the present embodiment, the asphalt can be laid by a simple operation of simply placing the asphalt sheet on the pavement and heating it. In addition, since the asphalt sheet can be cut and used in accordance with the repair location, for example, repair work on a road surface with a step or a crack can be performed efficiently.
Moreover, since the core material is not used when the asphalt sheet is melted, the melted asphalt sheet can be infiltrated to the back such as the gap, and the waterproofness can be improved. Furthermore, it is possible to prevent such a problem that the cutter part of the dedicated cutting machine is damaged.

[Method of manufacturing asphalt sheet]
The asphalt sheet of the present invention is manufactured as follows.
In this asphalt sheet manufacturing method, first, a stone powder material and a lubricating oil material are added to the bronze asphalt as a base material, followed by heating and kneading (step S1).
Here, when the stone powder material and the lubricating oil material as the additive are sufficiently kneaded and uniformly mixed, it is possible to prevent a problem of being partially brittle when formed into a sheet shape.

Next, the heat-kneaded asphalt material is formed into a sheet (step S2). Usually, a rectangular asphalt sheet is formed by pouring molten asphalt material into a rectangular annular mold.
Subsequently, the asphalt material formed in a sheet shape is cooled (step S3).
For this cooling, an air cooling method is generally adopted, but the method is not limited to the air cooling method, and for example, a method of forcibly cooling in a short time such as pressing a cooling plate against an asphalt material may be used. Thus, productivity can be improved by employ | adopting a forced cooling system.

Thus, according to the asphalt sheet manufacturing method of the present embodiment, the asphalt sheet can be easily manufactured.
Preferably, when the asphalt material is formed into a sheet, before the asphalt material is poured into a mold, release paper is spread as a release sheet, and the asphalt material is applied onto the release paper. If it does in this way, the malfunction that asphalt sheets will join can be prevented.
Furthermore, it is not limited to the structure using a shaping | molding die, For example, a continuous asphalt sheet sheet | seat can also be shape | molded by extruding an asphalt material continuously with a molding machine and rolling with a roller. In addition, although this asphalt sheet sheet may be cut into an arbitrary length, it can be wound up into a roll.

[Pavement and repair method using asphalt sheet]
<First embodiment>
In this embodiment, an embodiment of a repair method using an asphalt sheet for repairing a crack generated on a paved road surface will be described with reference to the drawings.
FIG. 1 is a schematic diagram for explaining a first embodiment of a pavement / repair method using an asphalt sheet according to the present invention, wherein (a) is a cross-sectional view of the state before repair, and (b) is an asphalt sheet. (C) is a cross-sectional view in a heated state, (d) is a cross-sectional view in a heated state with an asphalt sheet added, and (e) is a state at the time of completion of repair. Sectional drawing (f) shows a sectional view of a state in which the asphalt sheet is plastically deformed after the repair is completed.

In FIG. 2A, cracks 21 (concave repair points) are generated in the asphalt 2 paved on the ground 3. The crack 21 is clogged with foreign matter 22 such as sand and dust.
Therefore, first, blow air (not shown) is blown onto the crack 21 to remove the foreign matter 22 inside the crack 21.

  Next, as shown in FIG. 4B, the asphalt sheet 1 is cut to a size that covers the crack 21, and the cut asphalt sheet 1 is placed on the crack 21 (step S11).

Next, as shown in FIG. 3C, the asphalt sheet 1 is directly heated by the flame 41 of the gas burner 4 and the melted asphalt sheet 1 is filled in the crack 21 (step S12). Here, since the melted asphalt sheet 1 penetrates to the back of the crack 21, high waterproofness can be obtained.
Further, depending on the size and depth of the crack 21, the crack 21 may not be completely closed only by the asphalt sheet 1 placed first, and the recess 23 may remain. In such a case, as shown in FIG. 4 (d), the asphalt sheet 11 is cut according to the size of the recess 23, placed on the recess 23, and again asphalt sheet with the flame 41 of the gas burner 4. 11 is heated directly.

When heated as described above, the asphalt sheet 11 is melted and flows into the recess 23, and as shown in FIG. 5E, the crack 21 can be filled with the asphalt sheets 1 and 11 without a gap. Here, when the amount of the added asphalt sheet 11 is large, the convex portion 24 of the asphalt sheet 11 is formed on the top of the crack 21.
However, as shown in FIG. 4E, the convex portion 24 is pushed by the tire and plastically deforms when the vehicle passes, and the amount of protrusion of the convex portion 24 is reduced. Therefore, depending on the size of the convex portion 24, there is a case where an operation such as cutting the convex portion 24 may not be performed.

  Thus, in this embodiment, since the melted asphalt sheets 1 and 11 are filled in the crack 21, for example, even when the gap is narrow, the asphalt sheet 1 can be permeated deeply, and extremely high waterproofing is achieved. It is possible to carry out repairs that have sex. Furthermore, since no gap is generated inside the crack 21, the crack 21 can be fixed more firmly, and vibration and noise can be reduced more effectively.

<Second embodiment>
In the present embodiment, a repair method for repairing a step or a crack generated at a joint or the like of a paved road surface will be described with reference to the drawings.
FIG. 2 is a schematic diagram for explaining a second embodiment of the pavement / repair method using the asphalt sheet according to the present invention, wherein (a) is a sectional view before repair, and (b) is an asphalt sheet. The cross-sectional view after the placement is shown, (c) is the cross-sectional view after the aggregate is dispersed, and (d) is the cross-sectional view when the aggregate is acclimated.

In FIG. 2A, a step 25 and a crack 21 are generated in the asphalt 2 paved on the ground 3. The step 25 causes noise and vibration, and if the crack 21 is left unattended, deterioration and destruction are expanded due to infiltration of rainwater.
First, although not shown, blow air (not shown) is blown onto the crack 21 to remove foreign matter inside the crack 21.
Next, although not shown in the figure, the emulsion is applied to the range where the asphalt sheet 1 is laid, and the applied emulsion is heated by the flame 41 of the gas burner 4 (step S21).
As the emulsion, an emulsion for patching is usually used. This heating is performed until water contained in the emulsion is evaporated and the tackiness of the surface of the emulsion is lost.

Next, as shown in FIG. 2B, the asphalt sheet 1 is placed on the crack 21 and the asphalt sheet 1 is directly heated by the flame 41 of the gas burner 4 (step S22).
By this heating, the asphalt sheet 1 is melted, and the melted asphalt sheet 1 penetrates into the crack 21 and adheres to the road surface in a state of covering the step 25.

Next, as shown in FIG. 3C, the aggregate 51 is sprayed on the melted asphalt sheet 1 (step S23).
In this embodiment, coarse sand is sprayed as the aggregate 51. The aggregate 51 functions as an anti-slip of the asphalt sheet 1 by increasing the frictional resistance, and can improve the wear resistance of the asphalt sheet 1 itself in a place with a lot of traffic.

Next, the spread aggregate 51 is heated by the flame 41 of the gas burner 4 and is adjusted to the asphalt sheet 1 as shown in FIG.
The expression that the aggregate 51 is adapted to the asphalt sheet 1 means that the aggregate 51 sinks at least partially into the asphalt sheet 1 and is bonded to the asphalt sheet 1.
Note that after assembling the aggregate 51 to the asphalt sheet 1, the asphalt sheet 1 may be rolled by a tire roller or a push rod to be formed into a flatter shape.

Thus, in this embodiment, the step 25 and the crack 21 can be repaired easily and in a short time by melting the asphalt sheet 1 on the road surface. At this time, the asphalt sheet 1 required for repairing is heated and melted, so that the fuel in the dedicated melting tank and truck can be greatly reduced and melted compared to the conventional repair method using the dedicated melting pot. This is suitable for environmental hygiene because the gas is not generated during movement.
Further, the above work does not require skill requiring skill, and is a safe and easy work, so that the work efficiency can be improved and the repair can be performed by a small number of workers.
Moreover, by spreading the aggregate 51 on the surface of the asphalt sheet 1, it functions as an anti-slip and can improve the wear resistance of the asphalt sheet 1.

<Third embodiment>
In this embodiment, a pavement method using an asphalt sheet for a road surface with a stepped depression will be described with reference to the drawings.
FIG. 3 is a schematic diagram for explaining a third embodiment of the pavement / repair method using the asphalt sheet according to the present invention, wherein (a) is a cross-sectional view of the state before paving, and (b) is an asphalt sheet. (C) is a cross-sectional view of the state after placing and heating the asphalt sheet, (d) is a cross-sectional view of the state immediately after spraying the aggregate , (E) shows a cross-sectional view of the state after the aggregate is adjusted and the pavement is completed.

In FIG. 2A, a step 25 and a large depression 26 are generated on the asphalt 2 paved on the ground (not shown). Here, since the recess 26 is large, it is necessary to lay a plurality of asphalt sheets 1.
The surface of the asphalt 2 on which the asphalt sheet 1 is laid is previously cleaned with a brush, blow air or the like, further coated with an emulsion, and dried with a gas burner 4.

In FIG. 2B, the asphalt sheet 1 is placed on the step 25 of the asphalt 2 and heated by the gas burner 4 to melt the asphalt sheet 1.
Next, a plurality of asphalt sheets 1 are placed on the melted asphalt sheet 1 and the exposed recesses 26 so as to be spread. Subsequently, the asphalt sheet 1 is melted by heating with a gas burner 4 as shown in FIG. At this time, although not shown, if the asphalt sheet 1 is insufficient and dented so that the surface of the molten asphalt sheet 1 forms the same surface as the surface of the asphalt 2, an appropriate amount of asphalt sheet 1 is added. And melt.

  Next, as shown in FIG. 4D, the aggregate 51 is dispersed on the surface of the melted asphalt sheet 1. As described above, the dispersed aggregate 51 becomes familiar with the asphalt sheet 1, and the aggregate 51 sinks at least partially into the asphalt sheet 1 and is bonded to the asphalt sheet 1.

In the present embodiment, the asphalt sheet 1 in the region of the step 25 is thicker than the other regions.
In such a case, the asphalt sheet 1 in the region of the step 25 is heated by the gas burner 4 and the aggregate 51 is completely buried in the asphalt sheet 1 (that is, the asphalt sheet 1 is raised). Subsequently, the aggregate 51 is sprayed on this region to be familiar with the asphalt sheet 1. By repeating this operation, the layer including the aggregate 51 in the region of the arbitrary asphalt sheet 1 can be formed in an arbitrary thickness downward.

In addition, it is preferable that a layer made only of the asphalt sheet 1 not including the aggregate 51 is formed below the asphalt sheet 1. If it does in this way, the malfunction that the adhesive force of the asphalt sheet | seat 1 falls can be prevented, and also the elasticity which the asphalt sheet | seat 1 has does not fall, Therefore The outstanding vibration absorption performance can be exhibited.
Furthermore, it is preferable that a layer made of only the asphalt sheet 1 that does not include the aggregate 51 is formed to have substantially the same thickness with respect to the asphalt sheet 1 having different depths (see FIG. 5E). If it does in this way, since the substantially same elastic force acts with respect to the whole surface of the asphalt sheet 1, the malfunction that it becomes easy to generate | occur | produce a crack resulting from the difference of an elastic strain can be prevented.

  Next, in the state shown in FIG. 5 (e), the asphalt sheet 1 is rolled before being cooled, the surface of the asphalt sheet 1 is accurately formed, and then the asphalt sheet 1 is cooled. The pavement used is complete.

Thus, in this embodiment, although the aggregate 51 sinks into the upper part of the asphalt sheet 1, since the aggregate 51 does not enter into the lower part, it is possible to prevent the problem that the adhesion force of the asphalt sheet 1 is reduced. it can. Moreover, while the durability of the asphalt sheet 1 is improved by the aggregate 51, since the aggregate 51 is not included in the lower part of the asphalt sheet 1, elasticity can be maintained and vibration and noise can be suppressed. it can.
In addition, when there is a possibility that the asphalt sheet 1 may flow when the asphalt sheet 1 is melted, heating may be started after forming a bank around the asphalt sheet 1 using the aggregate 51 in advance. . In this way, even if the aggregate 51 functions as a bank and many asphalt sheets 1 are melted, it is possible to prevent problems such as the melted asphalt sheet 1 flowing out and to work efficiently.

The asphalt sheet and the pavement / repair method using the asphalt sheet according to the present invention have been described with reference to preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. Needless to say, it is possible to implement this change.
For example, an asphalt sheet is also effective as a simple herbicidal treatment member. When grass grows from a slight gap such as a cobblestone gap, the asphalt sheet is pulled out and filled with the asphalt sheet in the gap. Can also be used. Moreover, it can utilize also as a waterproofing processing member of buildings, such as a building.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic explaining 1st embodiment of the pavement and repair method using the asphalt sheet concerning this invention, (a) is sectional drawing of the state before repair, (b) is the state which mounted the asphalt sheet (C) is a sectional view in the heating state, (d) is a sectional view in the heating state with the addition of the asphalt sheet, (e) is a sectional view in the state when the repair is completed, (F) has shown sectional drawing of the state which the asphalt sheet | seat deformed plastically after completion of repair. It is the schematic explaining 2nd embodiment of the pavement and repair method using the asphalt sheet concerning this invention, (a) is sectional drawing of the state before repair, (b) is after mounting an asphalt sheet (C) is a cross-sectional view of the state after the aggregate is dispersed, and (d) is a cross-sectional view of the state in which the aggregate is acclimated. It is the schematic explaining 3rd embodiment of the pavement and repair method using the asphalt sheet concerning this invention, (a) is sectional drawing of the state before pavement, (b) is asphalt sheet mounted and heated. (C) is a cross-sectional view of the state after further placing and heating the asphalt sheet, (d) is a cross-sectional view of the state immediately after spraying the aggregate, (e) Shows a cross-sectional view of the state after the pavement is completed after the aggregate has been adjusted. It is the schematic explaining the asphalt sheet concerning a prior art example, (a) is sectional drawing explaining the structure of an asphalt sheet, (b) has shown sectional drawing explaining the usage method of an asphalt sheet.

1,11 Asphalt sheet 2 Asphalt 3 Ground 4 Gas burner 21 Crack 22 Foreign matter 23, 26 Indentation 24 Convex part 25 Step 41 Flame 51 Aggregate 100 Asphalt sheet 101 Silica sand layer 102 Special rubberized asphalt compound layer 103 Asphalt impregnated polyester nonwoven fabric 104 Special rubber Asphalt compound layer 120 Existing pavement 121 Crack 122 Joint material 123 Overlay layer

Claims (4)

Bron asphalt with a penetration of 10 to 20 is used as a base material, and a stone powder material having a diameter of about 0.074 mm to 1.0 mm is used as an additive, and the bron asphalt, the stone powder material, and the lubricating oil material are 60 An asphalt sheet characterized in that it is formed into a sheet shape with a weight content of% to 75%, 20% to 25%, 5% to 15% .   2. The asphalt sheet according to claim 1, wherein a used diesel engine oil is used as the lubricating oil material. A pavement / repair method using the asphalt sheet according to claim 1 or 2,
Placing and / or inserting the asphalt sheet in a concave pavement / repair site;
Directly heating and melting the asphalt sheet, and filling the melted asphalt sheet into the concave pavement / repair site ;
Paving and repairing method using asphalt sheet characterized by including A pavement / repair method using the asphalt sheet according to claim 1 or 2,
Coating the emulsion on the pavement / repair surface and heating the emulsion;
Placing the asphalt sheet on the pavement / repair surface, directly heating and melting the asphalt sheet; and
After and / or after spreading the aggregate on the asphalt sheet, further heating the asphalt sheet and sinking at least a part of the aggregate on the asphalt sheet;
Paving and repairing method using asphalt sheet characterized by including

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