Filler supply device and pavement processing method

Abstract

Provided is a filler supplying device and a method for processing a pavement that are capable of permeating a filler into an asphalt mixture layer after paving using a low-noise, simple method. [Solution] A filler supplying device 10 that causes filler M to permeate a road surface RS having an open-graded asphalt mixture layer comprises a tank 31 that stores filler M, a pump 32 that draws out the filler M from the tank 31 and pumps it out, a transport pipe 141 connected to the pump 32, and a tip plate material 6 that is placed on the road surface RS, and the tip of the transport pipe 141 is joined to a through hole 61 provided in the tip plate material 6, and the filler M supplied from the pump 32 through the transport pipe 141 is permeated into the road surface RS through the through hole 61 of the tip plate material 6.

Description

[Technical field]

[0001] The present invention relates to a filler supplying device and a method for processing a pavement. [Background technology]

[0002] Conventionally, a method of paving road surfaces has been known in which a filler such as cement milk is allowed to permeate the voids in an open-graded asphalt mixture (see, for example, Patent Document 1). By allowing a filler to permeate an open-graded asphalt mixture layer, it is possible to form a semi-flexible pavement that combines the flexibility of an asphalt pavement with the rigidity of a concrete pavement, and to color the asphalt pavement. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-19544 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the process of permeating the filler into the asphalt pavement after construction, a method is considered in which the filler is spread on the asphalt pavement and then vibration is applied to the asphalt pavement surface using machines such as plate compactors and rammers. However, this method is concerned about the noise generated by the vibration applied to the road surface after paving. In addition, the filler adheres to the machines, making it necessary to clean up after the work. Therefore, an object of the present invention is to provide a filler supplying device and a method for processing a pavement that can solve the above-mentioned problems and is capable of penetrating a filler into an asphalt mixture layer after paving in a quiet and simple manner. [Means for solving the problem]

[0005] One aspect of the present invention is a filler supplying device that infiltrates a filler into a road surface having an open-graded asphalt mixture layer, the device comprising a tank for storing the filler, a pump for pumping the filler from the tank and pumping it, a transport pipe connected to the pump, and a tip plate material placed on the road surface, the tip of the transport pipe being joined to a through hole provided in the tip plate material, and the filler supplied from the pump through the transport pipe is allowed to infiltrate into the road surface through the through hole of the tip plate material.

[0006] One aspect of the present invention is a pavement processing method for infiltrating a filler into a pavement of a road surface having an open-graded asphalt mixture layer, the method comprising: a placing step of placing a tip plate material having a through hole in one construction area; a pressure feeding step of pressure feeding the filler material from the through hole into the open-graded asphalt mixture layer; and an overflowing step of causing the filler material to overflow from the outer edge of the tip plate material; after the overflowing step, the pressure feeding of the filler material is stopped and the construction area is moved to another construction area, and the placing step, the pressure feeding step, and the overflowing step are repeated again. Effect of the Invention

[0007] According to the present invention, the filler is supplied toward the road surface from a plate material placed on the road surface, which allows the filler to penetrate into the asphalt mixture layer after paving in a quiet and simple manner. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of a filler supply system according to a first embodiment. [Diagram 2] FIG. 2 is a diagram showing the configuration of a pressure variation imparting device, where (A) is a plan view and (B) is a side view. [Diagram 3] FIG. [Figure 4] FIG. 11 is a schematic diagram of a filler supply system according to a second embodiment. [Diagram 5] 1A and 1B are diagrams showing the configuration of a vibration imparting device, in which (A) is a plan view and (B) is a side view. [Figure 6]FIG. 11 is a schematic diagram of a filler supply system according to a third embodiment. [Figure 7] FIG. 13 is a flowchart according to a fourth embodiment. [Figure 8] FIG. 1 is a diagram showing a marking process on a road surface. [Figure 9] FIG. [Figure 10] FIG. 13 is a flowchart according to a fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0010] [1. First embodiment] Fig. 1 is a schematic diagram of a filler supply system 1 according to a first embodiment of the present invention, showing the side of each device constituting the filler supply system 1. Fig. 2 is a configuration diagram of a pressure fluctuation imparting device 4, Fig. 2(A) is a plan view, and Fig. 2(B) is a side view. Fig. 3 is a perspective view of a tip plate material 6.

[0011] 1 to 3 show an X-axis, a Y-axis, and a Z-axis. The X-axis, Y-axis, and Z-axis are mutually perpendicular, and the Z-axis indicates a vertical direction perpendicular to the road surface RS. In the truck 2, the pressure fluctuation applying device 4, and the plate compactor 5, the X-axis corresponds to the front-rear direction, the Y-axis corresponds to the width direction, and the Z-axis corresponds to the up-down direction. The positive direction of the X-axis is the forward direction, and the positive direction of the Z-axis is the upward direction.

[0012] The filler supplying system 1 is a system that includes a filler supplying device 10 that supplies a filler M to a road surface RS that is a construction target, and causes the filler M to permeate the road surface RS.

[0013] The road surface RS is a road or the like that has already been paved with asphalt before construction. For example, a pavement made of an open-graded asphalt mixture is laid on the road surface RS. A pavement made of an open-graded asphalt mixture contains large voids and has water permeability. For this reason, by scattering the filler M on the open-graded asphalt mixture layer, the filler M can be allowed to penetrate into the pavement. However, depending on the fluidity and viscosity of the filler M, the rate at which the filler M penetrates into the voids of the open-graded asphalt mixture layer may decrease. For this reason, in order to allow the filler M to penetrate to a sufficient depth into the open-graded asphalt mixture layer, as described above, a method such as hitting the road surface RS with a plate compactor 5 or a tamping rammer has been used.

[0014] The filler M is a fluid having hardening properties, for example, a slurry, liquid, or emulsion. For example, the filler M may be a mixture of cement and water. Specifically, the filler M may be cement milk, cement grout, cement bentonite, or the like. The filler M may contain admixtures and additives. The admixtures and additives may be, for example, synthetic resins or inorganic compounds, specifically, hardening accelerators, water reducers, stabilizers, adhesives, enhancers, colorants, or the like. By scattering the filler M on the open-graded asphalt mixture layer constituting the road surface RS, the filler M penetrates into the open-graded asphalt mixture layer. As the cement in the filler M hardens, the road surface RS can be a semi-flexible pavement that has both the flexibility of asphalt pavement and the rigidity due to hardening of cement. In addition, when the filler M contains a coloring agent such as a pigment, the road surface RS can be a colored pavement.

[0015] In the filler supply system 1, the filler M is stored in a tank 31 mounted on the bed 21 of the truck 2. The tank 31 may be an agitation tank that mixes and agitates cement and water, which are materials for the filler M. Alternatively, the truck 2 may be configured to carry an agitation tank (not shown), and the filler M mixed in the agitation tank may be stored in the tank 31.

[0016] A pump 32 is connected to the tank 31. The suction side of the pump 32 is connected to the tank 31 via a supply pipe 33, and the discharge side of the pump 32 is connected to a first transport pipe 41. The pump 32 pressure-feeds the filler M supplied from the tank 31 through the supply pipe 33 to the first transport pipe 41.

[0017] The first transport pipe 41 is connected to the pressure variation imparting device 4. The pressure variation imparting device 4 sends the filler M, which is pressure-fed through the first transport pipe 41, to a second transport pipe 42. A tip plate material 6 is connected to the tip of the second transport pipe 42.

[0018] The filler supplying device 10 includes a pressure variation imparting device 4, a tip plate material 6, a first transport pipe 41, and a second transport pipe 42, and may include a pump 32. In addition, it may include a plate compactor 5 described later.

[0019] 2(B), when the pressure fluctuation imparting device 4 is used, the pressure fluctuation imparting device 4 is placed on the road surface RS. The pressure fluctuation imparting device 4 has an upper plate 43, a bottom plate 44 that contacts the road surface RS, and a flexible tube 45, and the flexible tube 45 is sandwiched between the upper plate 43 and the bottom plate 44.

[0020] 2(A), the upper plate 43 and the bottom plate 44 are rectangular plates. The shapes and sizes of the upper plate 43 and the bottom plate 44 may be the same or different.

[0021] The flexible tube 45 is a tube having flexibility that allows it to be bent in its cross-sectional direction. The flexible tube 45 may be, for example, a tube made of rubber, silicone, or other elastomer, and reinforced with metal or synthetic resin wires. The flexible tube 45 is arranged in a serpentine manner in the pressure variation imparting device 4, and an upper plate 43 and a bottom plate 44 are located in the cross-sectional direction of the flexible tube 45. One end of the flexible tube 45 is connected to the first transport tube 41, and the other end is connected to the second transport tube 42. The filler M pumped by the pump 32 flows from the first transport tube 41 into the flexible tube 45, and flows out from the flexible tube 45 into the second transport tube 42.

[0022] A check valve 47 is provided in the first transport pipe 41. The check valve 47 is a valve that stops the flow of the filler M in the direction from the pressure fluctuation imparting device 4 toward the pump 32.

[0023] In this embodiment, the upper plate 43 is maintained in a state separated from the bottom plate 44 by a predetermined distance by the flexible tube 45. In addition to the flexible tube 45, a support member fixed to the bottom plate 44 and supporting the upper plate 43 may be provided between the upper plate 43 and the bottom plate 44. For example, a pillar made of an elastic material or a coil spring may be disposed between the upper plate 43 and the bottom plate 44.

[0024] As shown in Fig. 3, the tip plate material 6 is a plate-like member placed on the road surface RS. The tip plate material 6 may be a rigid plate material made of metal, wood, synthetic resin, or the like. Alternatively, the tip plate material 6 may be a flexible plate or sheet made of rubber, silicone, or other elastomer. The shape of the tip plate material 6 is arbitrary, and may be circular, elliptical, rectangular, or another shape.

[0025] A through hole 61 is provided in the tip plate material 6. The tip of the second transport pipe 42 is joined to the through hole 61. The tip of the second transport pipe 42 and the through hole 61 are joined without any gap, and the filler M discharged from the second transport pipe 42 flows out from the lower surface of the tip plate material 6 through the through hole 61.

[0026] The pressure variation imparting device 4 is used together with a pressurizing machine that presses the pressure variation imparting device 4, and desirably, is used together with a pressurizing machine that periodically presses the pressure variation imparting device 4. In this embodiment, a plate compactor 5 is exemplified as the pressurizing machine.

[0027] When the processing method using the filler supply device 10 is carried out, as shown in FIG. 1, the pressure fluctuation imparting device 4 is pressed from above by the plate compactor 5. The plate compactor 5 is generally used in road paving work and is a device for compacting a paved surface. The plate compactor 5 has a frame 51 on which a driving source such as an engine is mounted, a rolling plate 52, and a handle 53 that is held when an operator moves the plate compactor 5. The plate compactor 5 periodically moves the rolling plate 52 up and down by rotating an eccentric rotor (not shown) by the power of the driving source. As a result, the rolling plate 52 periodically applies pressure downward by the weight of the frame 51 and the rolling plate 52.

[0028] When carrying out the processing method using the filler supply device 10, the filler M is stored in the tank 31, the supply pipe 33, the first transport pipe 41, and the second transport pipe 42 are connected, and the tip plate material 6 is placed on the road surface RS to be processed. When the pump 32 starts to operate in this state, the filler M flows out from the lower surface of the tip plate material 6 through the first transport pipe 41, the flexible pipe 45, and the second transport pipe 42. Since the lower surface of the tip plate material 6 is the contact surface that contacts the road surface RS, the filler M flows out between the surface of the road surface RS and the tip plate material 6. Therefore, the filler M spreads along the lower surface of the tip plate material 6 and permeates the road surface RS.

[0029] When the plate compactor 5 is placed on the pressure fluctuation applying device 4 and operated, the upper plate 43 is pressed downward as shown by the arrow B in Fig. 2(B). When the upper plate 43 is pressed, the flexible tube 45 is elastically deformed and the inside of the flexible tube 45 becomes high pressure. The flow of the filler M from the flexible tube 45 toward the first transport pipe 41 is blocked by the check valve 47. Therefore, when the upper plate 43 is pressed, the filler M in the flexible tube 45 is pushed out into the second transport pipe 42, and the filler M flows out forcefully between the tip plate material 6 and the road surface RS.

[0030] The plate compactor 5 periodically presses the upper plate 43. Therefore, the flow of the filler M from the pressure fluctuation imparting device 4 toward the second transport pipe 42 is accompanied by a periodic pressure change. In this way, the pressure fluctuation imparting device 4 generates a periodic fluctuation, i.e., a pulsation, in the pressure that transports the filler M to the tip plate material 6. The pressure of the filler M flowing out from the tip plate material 6 is determined by the amount of deformation of the flexible tube 45 when the plate compactor 5 is operated, the inner diameter of the flexible tube 45, and the opening area of ​​the through hole 61, and can be appropriately set by adjusting these.

[0031] In this way, by pumping the filler M from the tip plate 6 toward the road surface RS, the filler M quickly penetrates into the road surface RS at the bottom surface of the tip plate 6. Furthermore, the filler supply device 10 generates pulsation in the transport pressure of the filler M by the plate compactor 5, so that turbulence occurs in the pressure and flow of the filler M flowing out from the bottom surface of the tip plate 6. The pressure fluctuation of the filler M and the turbulence of the flow of the filler M have the effect of eliminating clogging and bias of the filler M in the open-graded asphalt mixture layer that constitutes the road surface RS. As a result, it is expected that the filler M will flow in various directions in the open-graded asphalt mixture layer. Therefore, according to the processing method using the filler supply device 10, the filler M can be efficiently penetrated into a wider range of the road surface RS compared to the case where the filler M is sprayed or injected into the road surface RS with a uniform pressure. The processing method using the filler supply device 10 can suppress noise because the road surface RS is not directly struck by the plate compactor 5, tamping rammer, etc. After construction, the filler M adheres to the contact surface of the tip plate 6, but the filler M does not adhere to the rolling plate 52, etc. Therefore, there is no need to clean the filler M that has adhered to the rolling plate 52, etc.

[0032] When carrying out the processing method using the filler supplying device 10, the worker only needs to hold the second transport pipe 42 in his / her hand. In this case, the second transport pipe 42 can be easily moved together with the tip plate material 6. Therefore, while moving the tip plate material 6, a wide range of road surface RS can be continuously constructed.

[0033] In the above configuration, the pressure fluctuation imparting device 4 is an example of a fluctuation imparting section, and the upper plate 43 is an example of a pressure plate. The open-graded asphalt mixture layer of the road surface RS corresponds to an example of a pavement.

[0034] As described above, the filler supplying device 10 according to the first embodiment of the present invention is a device for infiltrating the filler M into the road surface RS having an open-graded asphalt mixture layer. The filler supplying device 10 includes a first transport pipe 41 connected to the pump 32, and a pressure fluctuation imparting device 4 connected to the first transport pipe 41 and for delivering the filler M supplied through the first transport pipe 41 to the second transport pipe 42. The filler supplying device 10 includes a tip plate material 6 placed on the road surface RS. In the filler supplying device 10, the tip of the second transport pipe 42 is joined to the through hole 61 provided in the tip plate material 6. The filler supplying device 10 imparts at least one of a fluctuation in the delivery pressure of the filler M delivered from the second transport pipe 42 and a vibration of the filler M by the pressure fluctuation imparting device 4. In the first embodiment, the filler supplying device 10 imparts fluctuation to the delivery pressure of the filler M delivered from the second transport pipe 42 by the pressure fluctuation imparting device 4.

[0035] According to this configuration, the filler M is pumped from the tip plate 6 to the road surface RS, and the transport pressure of the filler M can be periodically changed. This makes it possible to generate disturbances in the pressure and flow of the filler M flowing into the road surface RS, allowing the filler M to efficiently permeate into a wider range of the open-graded asphalt mixture layer of the road surface RS. Therefore, the filler can be permeated into the voids in the asphalt mixture layer after paving using a low-noise, simple method.

[0036] In the first embodiment, the filler M is a liquid or a liquid containing a solid.

[0037] According to this configuration, the filler M becomes a fluid and permeates into the open-graded asphalt mixture layer of the road surface RS from the tip plate 6. Therefore, by varying the transport pressure of the filler M sent to the road surface RS, the filler M can be more effectively and efficiently permeated into the open-graded asphalt mixture layer.

[0038] The pressure fluctuation imparting device 4 includes a flexible tube 45 connected between the first transport pipe 41 and the second transport pipe 42, a bottom plate 44 placed on the road surface RS, and an upper plate 43 arranged to sandwich the flexible tube 45 between the bottom plate 44. The pressure fluctuation imparting device 4 includes a check valve 47 that stops the flow of filler M from the flexible tube 45 to the first transport pipe 41. In the pressure fluctuation imparting device 4, the flexible tube 45 is elastically deformed by pressing the upper plate 43.

[0039] According to this configuration, by applying a pressing force to the upper plate 43, the flexible tube 45 is elastically deformed to increase the pressure of the filler M inside the flexible tube 45, and the pressure of the filler M sent from the pressure fluctuation applying device 4 to the second transport pipe 42 can be varied. Therefore, for example, by utilizing the plate compactor 5, a configuration can be easily realized in which the transport pressure of the filler M sent from the tip plate material 6 to the road surface RS is varied.

[0040] The processing method for processing the open-graded asphalt mixture layer of the road surface RS by the filler supply device 10 is a processing method for a pavement body in which the filler M is permeated into the pavement body of the road surface RS having an open-graded asphalt mixture layer. In this processing method, the filler M is supplied to the pressure fluctuation imparting device 4 through the first transport pipe 41 connected to the pump 32, the pressure fluctuation imparting device 4 sends the filler M to the second transport pipe 42, and the tip plate material 6 joined to the tip of the second transport pipe 42 is placed on the road surface RS. Then, the pressure fluctuation imparting device 4 imparts at least one of the fluctuation of the delivery pressure of the filler M sent out from the second transport pipe 42 and the vibration of the filler M, so that the filler M is permeated into the road surface RS on which the tip plate material 6 is placed. In the processing method for the pavement body of the first embodiment, the pressure fluctuation imparting device 4 imparts the fluctuation of the delivery pressure of the filler M sent out from the second transport pipe 42.

[0041] According to this method, the filler M is pumped from the tip plate 6 to the road surface RS, and the transport pressure of the filler M can be periodically changed. This makes it possible to generate disturbances in the pressure and flow of the filler M flowing into the road surface RS, allowing the filler M to efficiently permeate into a wider range of the open-graded asphalt mixture layer of the road surface RS. Therefore, the filler can be permeated into the voids in the asphalt mixture layer after paving using a low-noise, simple method.

[0042] [2. Second embodiment] Fig. 4 is a schematic diagram of a filler supplying system 1A according to a second embodiment to which this embodiment is applied, showing the side of each device constituting the filler supplying system 1A. Fig. 5 is a configuration diagram of a vibration imparting device 7, Fig. 5(A) is a plan view, and Fig. 5(B) is a side view.

[0043] 4 and 5 show an X-axis, a Y-axis, and a Z-axis. The X-axis, Y-axis, and Z-axis are mutually perpendicular, and the Z-axis indicates a vertical direction perpendicular to the road surface RS. In the truck 2, the vibration imparting device 7, and the concrete vibrator 8, the X-axis corresponds to the front-to-rear direction, the Y-axis corresponds to the width direction, and the Z-axis corresponds to the up-to-down direction. The positive direction of the X-axis is the forward direction, and the positive direction of the Z-axis is the upward direction.

[0044] The filler supply system 1A is a system that includes a filler supplying device 10A that supplies a filler M to a road surface RS that is a construction target, and causes the filler M to permeate the road surface RS. In the filler supply system 1A, the same reference numerals are used for the components that are common to the configuration described in the first embodiment, and the description thereof will be omitted.

[0045] The filler supplying device 10A includes a vibration imparting device 7 instead of the pressure fluctuation imparting device 4 in the configuration of the filler supplying device 10 described in the first embodiment. The vibration imparting device 7 is used together with a vibration generating device including a vibrator. In this embodiment, a concrete vibrator 8 is exemplified as the vibration generating device. The concrete vibrator 8 is generally used in a concrete pouring method, and is a device that imparts vibration to concrete poured into a formwork. The concrete vibrator 8 includes a concrete vibrator body 81 equipped with a battery or the like, a motor 82 driven by the power of the battery, and a flexible hose 83 that vibrates by the driving force of the motor 82. The flexible hose 83 is a hollow tube, and a flexible wire (not shown) is housed inside the flexible hose 83. When the motor 82 rotates the flexible wire, the flexible wire and the flexible hose 83 collide with each other, and the entire flexible hose 83 vibrates periodically.

[0046] 5(A) and 5(B), the vibration imparting device 7 includes an upper plate 71, a bottom plate 72, a third transport pipe 73, and a hose housing 74. The vibration imparting device 7 is placed on a road surface RS when the vibration imparting device 7 is in use. In this state of use, the bottom plate 72 is in contact with the road surface RS, and the upper plate 71 is located above the bottom plate 72. The upper plate 71 and the bottom plate 72 are disposed so as to sandwich the third transport pipe 73 therebetween.

[0047] The upper plate 71 and the bottom plate 72 are rectangular plates. The shapes and sizes of the upper plate 71 and the bottom plate 72 may be the same or different.

[0048] The third transport pipe 73 is a hollow pipe capable of transporting the filler M. The third transport pipe 73 may be made of a flexible material or may be a rigid body. Preferably, the third transport pipe 73 is made of a material capable of elastically deforming and vibrating when vibration is applied. Specifically, the material of the third transport pipe 73 may be a metal or a synthetic resin.

[0049] One end of the third transport pipe 73 is connected to the first transport pipe 41, and the other end is connected to the second transport pipe 42. The third transport pipe 73 is a pipe that guides the filler M sent by the pump 32 to the first transport pipe 41 to the second transport pipe 42. The third transport pipe 73 is arranged in the vibration imparting device 7, for example, in a serpentine manner having multiple bends as shown in Fig. 5(A).

[0050] The vibration imparting device 7 has a hose housing 74 located close to or adjacent to the third transport pipe 73. The hose housing 74 is a space or sleeve capable of housing a flexible hose 83 of the concrete vibrator 8. The hose housing 74 connects or fixes the flexible hose 83 to any one of the upper plate 71, the bottom plate 72, and the third transport pipe 73.

[0051] When the concrete vibrator 8 operates with the flexible hose 83 attached to the hose housing 74, vibrations are imparted to at least a part of the vibration imparting device 7 by the flexible hose 83. As a result, vibrations are imparted to the filler M flowing through the third transport pipe 73, and the filler M sent from the third transport pipe 73 to the second transport pipe 42 is in a vibrated state. The vibration of the filler M causes, for example, fluctuations in the pressure of the filler M passing through the second transport pipe 42 and flowing out of the tip plate material 6.

[0052] In the filler supplying device 10A, a check valve 47 may be provided in the first transport pipe 41. In this case, when a fluctuation occurs in the pressure of the filler M in the third transport pipe 73, the check valve 47 can suppress high pressure from being applied to the pump 32 through the first transport pipe 41. This not only prevents interference with the operation of the pump 32, but also makes it possible to efficiently use the vibration of the flexible hose 83 to vibrate the filler M flowing out from the tip plate material 6.

[0053] In this way, in the filler supplying device 10A of the second embodiment, the filler M transported from the vibration imparting device 7 through the second transport pipe 42 can be vibrated by imparting vibration to the vibration imparting device 7 by the concrete vibrator 8. The vibration of the filler M results in vibration or pressure fluctuation of the filler M flowing from the tip plate 6 into the open-graded asphalt mixture layer of the road surface RS. Therefore, similar to the processing method using the filler supplying device 10 described in the first embodiment, the filler M can be efficiently penetrated into the open-graded asphalt mixture layer of the road surface RS.

[0054] The noise and vibration generated when the vibration imparting device 7 is vibrated by the operation of the concrete vibrator 8 is clearly smaller than when the road surface RS is struck by the plate compactor 5 or tamping rammer. Therefore, the filler M can be infiltrated into the open-graded asphalt mixture layer of the road surface RS by a method that produces less noise.

[0055] In the above configuration, the vibration imparting device 7 is an example of a fluctuation imparting section, and the flexible hose 83 is an example of a vibrating body.

[0056] As described above, the filler supplying device 10A according to the second embodiment of the present invention is a device for infiltrating the filler M into the road surface RS having an open-graded asphalt mixture layer. The filler supplying device 10A includes a first transport pipe 41 connected to the pump 32, and a vibration imparting device 7 connected to the first transport pipe 41 and for sending the filler M supplied through the first transport pipe 41 to the second transport pipe 42. The filler supplying device 10A includes a tip plate material 6 placed on the road surface RS. In the filler supplying device 10A, the tip of the second transport pipe 42 is joined to the through hole 61 provided in the tip plate material 6. The filler supplying device 10A imparts at least one of fluctuation in the delivery pressure of the filler M delivered from the second transport pipe 42 and vibration of the filler M by the vibration imparting device 7. In the second embodiment, the filler supplying device 10A imparts vibration to the filler M delivered from the second transport pipe 42 by the vibration imparting device 7.

[0057] According to this configuration, when the filler M is pressure-fed from the tip plate 6 to the road surface RS, periodic pressure fluctuations or vibrations can be applied to the filler M. This generates turbulence in the flow of the filler M flowing into the road surface RS, allowing the filler M to efficiently penetrate into a wider range of the open-graded asphalt mixture layer of the road surface RS. Therefore, the filler can be penetrated into the voids in the asphalt mixture layer after paving using a low-noise, simple method.

[0058] And, since the filler M is a liquid or a liquid containing a solid, the filler M becomes a fluid and permeates into the open-graded asphalt mixture layer of the road surface RS from the tip plate 6. Therefore, by varying the transport pressure of the filler M sent to the road surface RS, the filler M can be more effectively and efficiently permeated into the open-graded asphalt mixture layer.

[0059] The vibration imparting device 7 includes a third transport pipe 73 connected between the first transport pipe 41 and the second transport pipe 42, a bottom plate 72 placed on the road surface RS, and an upper plate 71 disposed so as to sandwich the third transport pipe 73 between the bottom plate 72. The vibration imparting device 7 can accommodate a flexible hose 83 as a vibrator between the upper plate 71 and the bottom plate 72.

[0060] According to this configuration, it is possible to easily apply vibration to the filler M using a vibration generating device such as the concrete vibrator 8. Therefore, it is possible to make the filler penetrate into the voids in the asphalt mixture layer after paving in a simple manner with little noise.

[0061] The above-described embodiments show specific examples to which the present invention is applied, and do not limit the form to which the invention can be applied.

[0062] For example, in each of the above embodiments, the tank 31 for storing the filler M and the pump 32 are mounted on the bed 21 of the truck 2, which is a self-propelled vehicle, but this is just one example. In a configuration in which the truck 2 carries the tank 31 and the pump 32, it is convenient to transport the filler M, the tank 31, and the pump 32, but they may be installed on the road surface RS in advance. For example, the tank 31 and the pump 32 may be fixedly installed at a position adjacent to the construction area.

[0063] In the above first embodiment, the flexible tube 45 is arranged to form one layer between the upper plate 43 and the bottom plate 44 of the pressure variation applying device 4, but this is just one example. The flexible tube 45 may be arranged to bend in the vertical direction between the upper plate 43 and the bottom plate 44, or may be arranged to form multiple layers.

[0064] In the above first embodiment, the pressure fluctuation imparting device 4 may be provided with a damping member such as a damper between the upper plate 43 and the bottom plate 44 as a support member against the striking force of the plate compactor 5. In addition, the device for pressing the pressure fluctuation imparting device 4 is not limited to the plate compactor 5, and a tamping rammer or various types of compaction machines may be used. These devices and the plate compactor 5 may be provided with a fuel-operated engine as a drive unit, or may be configured to have an electric motor as a drive unit.

[0065] In the first embodiment, a member having a function of absorbing shock or suppressing vibration may be disposed on the contact surface where the bottom plate 44 comes into contact with the road surface RS. For example, a plate-shaped, columnar, or spherical member may be disposed on the contact surface of the bottom plate 44, and this member may be made of anti-vibration rubber or other elastic member. In this case, an even greater noise suppression effect can be expected.

[0066] In the second embodiment, a member having a function of absorbing shock or suppressing vibration may be disposed on the contact surface where the bottom plate 72 comes into contact with the road surface RS. For example, a plate-shaped, columnar, or spherical member may be disposed on the contact surface of the bottom plate 72, and this member may be made of anti-vibration rubber or other elastic member. In this case, an even greater noise suppression effect can be expected.

[0067] In the second embodiment, the check valve 47 may be omitted. In the second embodiment, a block-shaped holding member made of foamed resin such as urethane or elastomer may be disposed between the upper plate 71 and the bottom plate 72 of the vibration imparting device 7. The third transport pipe 73 may be embedded in the holding member, and a sleeve-shaped recess may be provided in the holding member to form the hose housing 74. In this case, vibration can be transmitted more efficiently from the vibrator housed in the hose housing 74 to the third transport pipe 73. In the second embodiment, the third transport pipe 73 may be configured not to meander inside the vibration imparting device 7. In addition, the detailed configurations of the filler supplying systems 1, 1A and the filler supplying devices 10, 10A can also be changed arbitrarily.

[0068] [3. Third embodiment] FIG. 6 is a schematic diagram of a filler supplying system 1B according to a third embodiment to which this embodiment is applied, showing side views of each device constituting the filler supplying system 1B.

[0069] The filler supply system 1B is a system that includes a filler supplying device 10B that supplies a filler M to a road surface RS that is a construction target, and causes the filler M to permeate the road surface RS. In the filler supply system 1B, the same reference numerals are used for the components that are common to the configuration described in the first embodiment, and the description thereof will be omitted.

[0070] In the filler supplying device 10B, the pressure variation imparting device 4 of the first embodiment or the vibration imparting device 7 of the second embodiment is omitted. However, the discharge pressure of the pump 32 of the third embodiment is set higher than the discharge pressure of the pump 32 of the first embodiment or the discharge pressure of the pump 32 of the second embodiment.

[0071] A pump 32 is connected to the tank 31. The suction side of the pump 32 is connected to the tank 31 via a supply pipe 33, and the discharge side of the pump 32 is connected to a transport pipe 141. The pump 32 pressure-feeds the filler M supplied from the tank 31 through the supply pipe 33 to the transport pipe 141.

[0072] The tip plate material 6 is a plate-like member placed on the road surface RS, as shown in Fig. 3. The tip plate material 6 may be a rigid plate material made of metal, wood, synthetic resin, or the like. Alternatively, the tip plate material 6 may be a flexible plate or sheet made of rubber, silicone, or other elastomer. The shape of the tip plate material 6 is arbitrary, and may be circular, elliptical, rectangular, or another shape.

[0073] The tip plate material 6 is provided with a through hole 61. The tip of the transport pipe 141 is joined to the through hole 61 of the tip plate material 6. The tip of the transport pipe 141 and the through hole 61 are joined without any gap, and the filler M discharged from the transport pipe 141 flows out from the lower surface of the tip plate material 6 through the through hole 61.

[0074] As described above, the filler supplying device 10B according to the third embodiment is a device for permeating the filler M into a road surface RS having an open-graded asphalt mixture layer. The filler supplying device 10B includes a transport pipe 141 connected to a pump 32, and a tip plate material 6 placed on the road surface RS. The tip of the transport pipe 141 is joined to a through hole 61 provided in the tip plate material 6. The filler M supplied from the pump 32 through the transport pipe 141 is permeated into the road surface RS through the through hole 61 of the tip plate material 6.

[0075] According to this configuration, by pumping the filler M from the tip plate 6 to the road surface RS, the filler M can be efficiently permeated into the open-graded asphalt mixture layer located between the tip plate 6 and the road surface RS. Therefore, the filler can be permeated into the gaps in the asphalt mixture layer after paving by a low-noise and simple method. Since the filler M is a liquid or a liquid containing solids, the filler M becomes a fluid and can be efficiently permeated into the open-graded asphalt mixture layer.

[0076] [4. Fourth embodiment] The fourth embodiment is a method for processing a pavement, which is applied to the filler supplying device 10B according to the third embodiment. 7 is a flow chart of a method for processing a pavement. An example of a pavement is an open-graded asphalt mixture layer. The pavement is processed by permeating cement milk M, which is an example of a filler M, into the voids of the asphalt mixture layer.

[0077] As a preparation stage for processing, a marking process of a predetermined construction area E is performed on the road surface RS (step 1). The marking process is a process of marking lines L that divide the road surface RS into a plurality of construction areas E, as shown in Fig. 8. The road surface RS is, for example, a parking lot. The multiple construction areas E are rectangular, and although not shown in the fourth embodiment, it is desirable that the shape of the tip plate material 6 be a rectangle with the same dimensions as the construction areas E. In other words, when the shape of the tip plate material 6 is a square with one side measuring 1 m, each construction area E is partitioned into a square with one side measuring 1 m.

[0078] The tip plate material 6 is placed in one of the construction areas E1 (Step 2). Step 2 corresponds to an example of a placement process in which the tip plate material 6 having a through hole 61 is placed in one of the construction areas E on the road surface RS. The tip plate material 6 is preferably a flexible plate material made of rubber, silicone, or other elastomers. The tip of the transport pipe 141 is connected to the through hole 61 of the tip plate material 6 without any gaps. Next, the pump 32 is driven to pump the cement milk M through the transport pipe 141 (step 3). Step 3 corresponds to an example of a pumping step of pumping the filler from the through hole 61 to the open-graded asphalt mixture layer 173. Here, it is desirable to set the discharge pressure of the pump 32 higher than the discharge pressure of the pump 32 in the first and second embodiments.

[0079] Fig. 9 is a cross-sectional view of the road surface RS on which the tip plate 6 is placed. Fig. 9 is a schematic diagram of the cross-section of the road surface RS, and the shape, thickness, etc. are not limited. The road surface RS is composed of a coarse-grained asphalt mixture layer 171 and an open-grained asphalt mixture layer 173 formed on the coarse-grained asphalt mixture layer 171. The open-grained asphalt mixture layer 173 is a mixture layer that has numerous voids.

[0080] The tip plate 6 is placed on the open-graded asphalt mixture layer 173, and the pump 32 is driven to pump cement milk M through the transport pipe 141, which permeates from the underside of the tip plate 6 into the open-graded asphalt mixture layer 173 through the through-hole 61. The road surface RS and the tip plate 6 are in close contact with each other, and the pumped cement milk M permeates the gaps in the open-graded asphalt mixture layer 173 and spreads throughout the entire area below the tip plate 6.

[0081] In this state, when the cement milk M is further pumped, the cement milk M that has spread throughout the entire area below the tip plate 6 overflows from the outer periphery of the tip plate 6 as shown by the arrow SM (Step 4). Step 4 corresponds to an example of an overflowing process in which the filler is made to overflow from the outer periphery of the tip plate 6.

[0082] It is possible to visually confirm that the cement milk M is spilling out from the outer peripheral edge of the leading end plate material 6. Once it is confirmed that the cement milk M is spilling out, the operation of the pump 32 is stopped, and the pumping of the cement milk M is stopped (Step 5). In this Step 5, the infiltration work of the cement milk M in one construction area E1 is completed. If a switching valve (not shown) for opening and closing the flow path is provided in the transport pipe 141, the pumping of the cement milk M can be stopped by closing the on-off switching valve (not shown) without stopping the operation of the pump 32.

[0083] When the infiltration work of the cement milk M in one construction area E1 is completed, it is determined whether to move to another construction area E2 and repeat steps 2 to 5 (step 6). If it is not to move to another construction area E2, the process ends.

[0084] If another construction area E2 exists among the areas partitioned by the marking process in step 1, the process returns to step 2. When returning to step 2, the other construction area E2 corresponds to one construction area E1 according to the present invention, and steps 2 to 5 are repeated. To explain the repetition of steps 2 to 5 again, the tip plate material 6 is removed from one construction area E1 and moved to another construction area E2. When moving the tip plate material 6 to the other construction area E2, if the worker moves it by holding the transport pipe 141 in his / her hand, the tip plate material 6 can be easily moved together with the transport pipe 141.

[0085] Next, the pump 32 is driven to pump the cement milk M to another construction area E2 through the transport pipe 141 (step 3). If an on-off switching valve (not shown) is provided in the transport pipe 141, the pump 32 can be driven in advance and the on-off switching valve (not shown) can be opened to pump the cement milk M. As a result, the cement milk M permeates into the open-graded asphalt mixture layer 173 from the lower surface of the tip plate 6 through the through-holes 61 as shown in FIG.

[0086] The road surface RS and the tip plate material 6 are in close contact with each other, and in step 3, the cement milk M permeates into the voids in the open-graded asphalt mixture layer 173.

[0087] The cement milk M permeates the road surface RS while spreading along the underside of the leading plate 6. The cement milk M that has spread throughout the entire lower region spills out from the outer periphery of the leading plate 6 as shown by the arrow SM (Step 4). After it is confirmed that the cement milk M has spilled out from the outer periphery of the leading plate 6, the operation of the pump 32 is stopped, and the pumping of the cement milk M is stopped (Step 5).

[0088] When the infiltration work of the cement milk M in one construction area E1 is completed, the process proceeds to step 6 to determine whether or not to repeat steps 2 to 5 again. If there is no movement to another construction area E2, the process ends. If there is movement to another construction area E2, steps 2 to 5 are repeated again. In this manner, the infiltration operation is repeated in all construction areas E, and when infiltration into all construction areas E is completed, the processing of the open-graded asphalt mixture layer (pavement) 173 is completed.

[0089] This processing method can suppress noise because it does not directly strike the road surface RS with a plate compactor or the like as in the past. In addition, although cement milk M adheres to the contact surface of the tip plate material 6 after construction, it does not adhere to the plate compactor or the like as in the past, so there is no need to clean the cement milk M from machines such as the plate compactor.

[0090] Considering the work of moving the tip plate 6 from one construction area E1 to another construction area E2, it is preferable that the tip plate 6 is small and lightweight. On the other hand, it is undesirable that the tip plate 6 is lifted up by the pressure when the cement milk M is pumped.

[0091] It is desirable that the tip plate material 6 has an appropriate size and weight. The tip plate material 6 is formed to be lightweight, and a weight such as a steel plate may be placed on the tip plate material 6 when it is in use. The weight such as a steel plate may be, for example, a pair of weight plates split in half (not shown) having a notch to accommodate the tip of the first transport pipe 41 connected to the tip plate material 6.

[0092] In the first embodiment, the filler M is a liquid or a liquid containing a solid.

[0093] According to this configuration, the filler M becomes a fluid and permeates into the open-graded asphalt mixture layer of the road surface RS from the tip plate 6. Therefore, by varying the transport pressure of the filler M sent to the road surface RS, the filler M can be more effectively and efficiently permeated into the open-graded asphalt mixture layer.

[0094] This is a pavement processing method for infiltrating cement milk M into an open-graded asphalt mixture layer 173 of a road surface RS, and includes a placing step of placing a tip plate material 6 having a through hole 61 in one construction area E1 of the road surface RS, a pressure-feeding step of pressure-feeding cement milk M from the through hole 61 into the open-graded asphalt mixture layer 173, and an overflowing step of causing the cement milk M to overflow from the outer edge of the tip plate material 6, and after the overflowing step, the method moves to another construction area, and the placing step, pressure-feeding step, and overflowing step are repeated in order again. According to this configuration, the cement milk M can be infiltrated into the open-graded asphalt mixture layer 173 after paving in a simple manner with little noise.

[0095] [5. Fifth Embodiment] The fifth embodiment is a method for processing a pavement, which is applied to the filler supplying devices 10A and 10B according to the first and second embodiments. 10 is a flowchart of the pavement processing method. The fifth embodiment is different from the fourth embodiment in the pumping process (step 31) of pumping the filler from the through hole 61 to the open-graded asphalt mixture layer 173. The other steps are the same as those of the fourth embodiment, so the description will be omitted. 8, the multiple treatment areas E are square, and in the fifth embodiment, although not shown, it is preferable that the tip plate material 6 has a square shape with the same dimensions as the treatment areas E. In addition, it is preferable that the tip plate material 6 is a flexible plate material made of rubber, silicone, or other elastomer.

[0096] In the pumping process of step 31, at least one of fluctuation in the pumping pressure of the cement milk M and vibration of the cement milk M is applied to the cement milk M. The fluctuation in the discharge pressure of the cement milk M is imparted, for example, by the pressure fluctuation imparting device 4 of the first embodiment, and the vibration of the cement milk M is imparted, for example, by the vibration imparting device 7 of the second embodiment. Note that the fluctuation in the discharge pressure of the cement milk M and the vibration of the cement milk M are not limited to those imparted by the pressure fluctuation imparting device 4 and the vibration imparting device 7 described above. They can be imparted by any method.

[0097] This processing method can suppress noise because it does not directly strike the road surface RS with a plate compactor or the like as in the past. In addition, although cement milk M adheres to the contact surface of the tip plate material 6 after construction, it does not adhere to the plate compactor or the like as in the past, so there is no need to clean the cement milk M from machines such as the plate compactor.

[0098] In addition, during the pumping process, at least one of the fluctuation in the delivery pressure of the cement milk M and the vibration of the cement milk M is applied to the cement milk M, causing pulsation in the transport pressure of the cement milk M and disturbances in the pressure and flow of the cement milk M flowing out from the underside of the leading plate 6. According to this configuration, the cement milk M can be efficiently permeated into the open-graded asphalt mixture layer 173 after paving, and the pumping time can be shortened in step 31.

[0099] The pressure fluctuation of the cement milk M and the turbulence of the flow of the cement milk M can eliminate clogging and uneven distribution of the cement milk M in the open-graded asphalt mixture layer 173 that constitutes the road surface RS. As a result, it is expected that the cement milk M will flow in various directions in the open-graded asphalt mixture layer 173.

[0100] Therefore, according to this processing method, the cement milk M can be efficiently permeated over a wider area of ​​the road surface RS compared to the conventional method in which the cement milk M is spread or injected onto the road surface RS with uniform pressure.

[0101] According to this processing method, the transport pressure of the cement milk M can be periodically changed. This makes it possible to generate disturbances in the pressure and flow of the cement milk M flowing into the road surface RS, and allows the cement milk M to efficiently permeate into a wider range of the open-graded asphalt mixture layer 173 of the road surface RS.

[0102] Although the present invention has been described based on the above embodiments, it goes without saying that the present invention is not limited to these embodiments and various modifications are possible. [Explanation of symbols]

[0103] 1, 1A, 1B Filler Supply System 4. Pressure fluctuation applying device (fluctuation applying section) 5 Plate Compactor 6 Tip plate material 7 Vibration imparting device (variation imparting part) 8. Concrete Vibrator 10, 10A, 10B Filler supply device 31 Tank 32 Pump 33 Supply pipe 41 1st transport pipe 42 2nd transport pipe 43 Upper plate (pressure plate) 44 Bottom plate 45 Flexible tube 47 Check valve 51 Frame 52 Rolling plate 53 Handle 61 Through hole 71 Upper Board 72 Bottom plate 73 3rd transport pipe 74 Hose housing 81 Concrete vibrator body 82 Motor 83 Flexible hose (vibrator) 141 Transport pipe 171 Coarse-grained asphalt mixture layer 173 Open-graded asphalt mixture layer M Filler (cement milk) RS road surface

Claims

1. A filler supplying device for infiltrating a filler into a road surface having an open-graded asphalt mixture layer, A tank for storing the filler; A pump that pumps the filler from the tank and pumps it out; A transport pipe connected to the pump; A tip plate material placed on the road surface, The tip of the transport pipe is joined to a through hole provided in the tip plate material, The filler material supplied from the pump through the transport pipe is allowed to permeate into the road surface through the through hole of the tip plate material. Filling material supply device.

2. The transport pipe includes a first transport pipe and a second transport pipe, The first transport pipe is connected to the pump, and a tip of the second transport pipe is joined to a through hole provided in the tip plate material, a fluctuation imparting unit connected to the first transport pipe and configured to deliver the filler supplied through the first transport pipe to a second transport pipe; The fluctuation imparting unit imparts at least one of a fluctuation in a delivery pressure of the filler and a vibration of the filler to the filler to be pumped into the second transport pipe. The filler supplying device according to claim 1 .

3. The variation applying unit is a flexible tube connected between the first transport tube and the second transport tube; A bottom plate placed on the road surface; a pressing plate disposed between the flexible tube and the bottom plate; and a check valve that stops the flow of the filler from the flexible tube to the first transport tube, The flexible tube is elastically deformed by pressing the pressing plate. The filler supplying device according to claim 2.

4. The variation applying unit is a third transport pipe connected between the first transport pipe and the second transport pipe; A bottom plate placed on the road surface; an upper plate disposed so as to sandwich the third transport pipe between the upper plate and the bottom plate, A vibrator can be accommodated between the bottom plate and the top plate. The filler supplying device according to claim 2.

5. The filler is a liquid or a liquid containing a solid. A filler supplying device according to any one of claims 1 to 4.

6. A method for processing a pavement comprising permeating a filler into a pavement having an open-graded asphalt mixture layer, the method comprising the steps of: The method includes a step of placing a tip plate having a through hole in one construction area, a step of pumping the filler from the through hole into the open-graded asphalt mixture layer, and a step of overflowing the filler from the outer edge of the tip plate. After the overflowing step, the pumping of the filler is stopped and the work is moved to another construction area, and the placing step, the pumping step, and the overflowing step are repeated again. A method for processing pavement.

7. The pressure-feeding step applies at least one of a fluctuation in a delivery pressure of the filler and a vibration of the filler to the filler. A method for processing a pavement according to claim 6.

8. A marking step is provided for marking a predetermined number of the construction areas on the open-graded asphalt mixture layer, The movement from the one construction area to the other construction area is along the marked construction area. A method for processing a pavement according to claim 6 or 7.

9. The tip plate is a flexible plate made of rubber, silicone, or other elastomer. A method for processing a pavement according to claim 6 or 7.

10. The filler is a liquid or a liquid containing a solid. A method for processing a pavement according to claim 6 or 7.

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