Filling material feeding device and processing method for pavement material

Abstract

To provide a filling material feeding device capable of permeating a filling material into an asphalt mixture layer after paving by a low-noise and simple method, and a processing method for a pavement material.SOLUTION: A filling material feeding device 10 that permeates a filling material M into a road surface RS with an open-graded asphalt mixture layer comprises a tank 31 that stores the filling material M, a pump 32 that pumps out the filling material M from the tank 31 and feeds the same under pressure, a transport pipe 141 connected to the pump 32, and a tip plate material 6 placed on the road surface RS, wherein the tip of the transport pipe 141 is joined to a through hole 61 provided in the tip plate material 6, and the filling material M fed through the transport pipe 141 from the pump 32 is caused to permeate into the road surface RS through the through hole 61 of the tip plate material 6.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a filler supply device and a method for processing a pavement body.

Background Art

[0002] Conventionally, as a method for paving a road surface, a method of infiltrating a filler such as cement milk into the voids of an open-graded asphalt mixture has been known (see, for example, Patent Document 1). By infiltrating a filler into the open-graded asphalt mixture layer, it is possible to form a semi-flexible pavement having both the flexibility of an asphalt pavement and the rigidity of a concrete pavement, or to color the asphalt pavement.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the step of infiltrating a filler into the asphalt pavement after construction, a method of vibrating the asphalt pavement surface with a machine such as a plate compactor or a rammer after spraying the filler onto the asphalt pavement can be considered. However, in this method, there is a concern that the noise is large because the pavement after paving is vibrated. In addition, since the filler adheres to the machine, cleaning after work is required. Therefore, an object of the present invention is to solve the above-described problems and provide a filler supply device capable of infiltrating a filler into an asphalt mixture layer after paving by a low-noise and simple method, and a method for processing a pavement body.

Means for Solving the Problems

[0005] Aspects of the present invention relate to a filler supply device for infiltrating a filler into a road surface having an open-graded asphalt mixture layer, comprising a tank for storing the filler, a pump for pumping out and pressure-feeding the filler from the tank, a transport pipe connected to the pump, and a tip plate member placed on the road surface. The tip of the transport pipe is joined to a through-hole provided in the tip plate member, and the filler supplied from the pump through the transport pipe is infiltrated into the road surface through the through-hole of the tip plate member.

[0006] Aspects of the present invention relate to a method for processing a pavement for infiltrating a filler into a pavement having an open-graded asphalt mixture layer, comprising a placement step of placing a tip plate member having a through-hole in one construction area, a pressure-feeding step of pressure-feeding the filler from the through-hole into the open-graded asphalt mixture layer, and an overflow step of causing the filler to overflow from the outer edge portion of the tip plate member. After the overflow step, the pressure-feeding of the filler is stopped, the process moves to another construction area, and the placement step, the pressure-feeding step, and the overflow step are repeated again.

Advantages of the Invention

[0007] According to the present invention, the filler is supplied from a plate member placed on the road surface toward the road surface. Thereby, the filler can be infiltrated into the asphalt mixture layer after paving by a low-noise and simple method.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the attached drawings.

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

[0011] In FIGS. 1 to 3, the X-axis, Y-axis, and Z-axis are shown. The X-axis, Y-axis, and Z-axis are orthogonal to each other, and the Z-axis indicates the 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 front, and the positive direction of the Z-axis is the up.

[0012] The filler supply system 1 includes a filler supply device 10 that supplies a filler M to a road surface RS to be constructed, and is a system that penetrates the filler M into the road surface RS.

[0013] The road surface RS is a road or the like that has already been asphalt-paved before construction. For example, the road surface RS is paved with an open-graded asphalt mixture. The pavement formed of the open-graded asphalt mixture contains large voids and has water permeability. Therefore, by spraying the filler M on the open-graded asphalt mixture layer, the filler M can 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 of the open-graded asphalt mixture layer, as described above, methods such as hitting the road surface RS with a plate compactor 5 or a tamping rammer may be used.

[0014] The filler M is a curable fluid, for example, a slurry, a liquid, or an emulsion. For example, as the filler M, a mixture of cement and water can be mentioned. Specifically, it is cement milk, cement grout, cement bentonite, etc. The filler M may contain admixtures and additives. The admixtures and additives are composed of, for example, synthetic resins and inorganic compounds, and specifically include curing accelerators, water reducers, stabilizers, adhesives, reinforcing agents, coloring agents, etc. By spraying 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. When the cement of the filler M hardens, the road surface RS can be made into a semi-flexible pavement having both the flexibility of the asphalt pavement and the rigidity due to the hardening of the cement. Also, when the filler M contains a coloring agent such as a pigment, the road surface RS can be made into a colored pavement.

[0015] In the filler supply system 1, the filler M is stored in a tank 31 mounted on the loading platform 21 of the truck 2. The tank 31 may be a stirring tank that mixes and stirs cement and water, which are the materials of the filler M. Also, a configuration may be adopted in which the truck 2 is equipped with a stirring tank (not shown), and the filler M mixed in the stirring tank is stored in the tank 31.

[0016] A pump 32 is connected to the tank 31. The tank 31 is connected to the suction side of the pump 32 via a supply pipe 33, and a first transport pipe 41 is connected to the discharge side of the pump 32. The pump 32 pumps the filling material 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 fluctuation applying device 4. The pressure fluctuation applying device 4 sends the filling material M pumped through the first transport pipe 41 to the second transport pipe 42. A tip plate material 6 is connected to the tip of the second transport pipe 42.

[0018] The filling material supply device 10 includes the pressure fluctuation applying device 4, the tip plate material 6, the first transport pipe 41, and the second transport pipe 42, and may include the pump 32. Further, it may include a plate compactor 5 described later.

[0019] As shown in FIG. 2(B), when the pressure fluctuation applying device 4 is in use, the pressure fluctuation applying device 4 is placed on the road surface RS. The pressure fluctuation applying device 4 has an upper plate 43, a bottom plate 44 in contact with the road surface RS, and a flexible pipe 45, and the flexible pipe 45 is sandwiched between the upper plate 43 and the bottom plate 44.

[0020] As shown in FIG. 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 pipe 45 is a pipe having flexibility that can be bent in its cross-sectional direction. The flexible pipe 45 is made of, for example, rubber, silicone, or other elastomers, and may be a pipe reinforced with metal or synthetic resin wires. The flexible pipe 45 is arranged in a meandering manner in the pressure fluctuation applying device 4, and the upper plate 43 and the bottom plate 44 are located in the cross-sectional direction of the flexible pipe 45. One end of the flexible pipe 45 is connected to the first transport pipe 41, and the other end is connected to the second transport pipe 42. The filling material M pumped by the pump 32 flows into the flexible pipe 45 from the first transport pipe 41 and flows out of the flexible pipe 45 to the second transport pipe 42.

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

[0023] In the present embodiment, the upper plate 43 is held at a predetermined distance from the bottom plate 44 by the flexible pipe 45. Between the upper plate 43 and the bottom plate 44, in addition to the flexible pipe 45, a support member fixed to the bottom plate 44 and supporting the upper plate 43 may be provided. For example, a column made of an elastic material or a coil spring may be arranged 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, etc. Alternatively, the tip plate material 6 may be a flexible plate or sheet made of rubber, silicone, or other elastomers. The shape of the tip plate material 6 is arbitrary and may be circular, elliptical, rectangular, or other shapes.

[0025] A through hole 61 is provided in the tip plate material 6. The tip of the second delivery pipe 42 is joined to the through hole 61. There is no gap between the tip of the second delivery pipe 42 and the through hole 61, and the filling material M discharged from the second delivery pipe 42 flows out from the lower surface of the tip plate material 6 through the through hole 61.

[0026] The pressure fluctuation applying device 4 is used together with a pressurizing machine that presses the pressure fluctuation applying device 4, and preferably, is used together with a pressurizing machine that periodically presses the pressure fluctuation applying device 4. In the present embodiment, a plate compactor 5 is exemplified as the pressurizing machine.

[0027] When implementing the processing method using the filler supply device 10, as shown in FIG. 1, the pressure fluctuation applying 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 rolling the paving surface. The plate compactor 5 has a frame body 51 equipped with a drive source such as an engine, a rolling disk 52, and a handle 53 that is held when an operator moves the plate compactor 5. The plate compactor 5 rotates an eccentric rotor (not shown) by the power of the drive source, thereby causing the rolling disk 52 to move up and down periodically. As a result, the rolling disk 52 performs periodic pressurization downward due to the weights of the frame body 51 and the rolling disk 52.

[0028] When implementing 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 installed on the road surface RS to be constructed. In this state, when the pump 32 starts operating, 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 a grounding surface in contact with 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 penetrates into the road surface RS while spreading along the lower surface of the tip plate material 6.

[0029] When the plate compactor 5 is placed on the pressure fluctuation applying device 4 and the plate compactor 5 is operated, the upper plate 43 is pressed downward as indicated by the arrow B in FIG. 2(B). When the upper plate 43 is pressed, the flexible pipe 45 elastically deforms and the inside of the flexible pipe 45 becomes high pressure. The flow of the filler M from the flexible pipe 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 pipe 45 is pushed out into the second transport pipe 42, and the filler M flows out vigorously 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 filling material M from the pressure fluctuation imparting device 4 toward the second transport pipe 42 involves periodic pressure changes. Thus, the pressure fluctuation imparting device 4 causes periodic fluctuations, i.e., pulsations, in the pressure for transporting the filling material M to the tip plate material 6. The pressure of the filling material M flowing out from the tip plate material 6 is determined by the amount of deformation of the flexible pipe 45 when operating the plate compactor 5, the inner diameter of the flexible pipe 45, the opening area of the through-hole 61, etc., and can be appropriately set by adjusting these parameters.

[0031] In this way, by pumping the filling material M from the tip plate material 6 toward the road surface RS, the filling material M rapidly penetrates into the road surface RS on the lower surface of the tip plate material 6. Further, since the filling material supply device 10 generates pulsations in the transport pressure of the filling material M by the plate compactor 5, disturbances occur in the pressure and flow of the filling material M flowing out from the lower surface of the tip plate material 6. The pressure fluctuations of the filling material M and the disturbances in the flow of the filling material M have the effect of eliminating clogging and uneven distribution of the filling material M in the open-graded asphalt mixture layer constituting the road surface RS. As a result, it can be expected that the filling material M flows dispersedly in various directions in the open-graded asphalt mixture layer. Therefore, according to the processing method using the filling material supply device 10, compared with the case of spraying or injecting the filling material M onto the road surface RS at a uniform pressure, the filling material M can be efficiently penetrated into a wider range of the road surface RS. The processing method by the filling material supply device 10 does not directly strike the road surface RS with a plate compactor 5, a tamping rammer, etc., so noise can be suppressed. Also, although the filling material M adheres to the grounding surface of the tip plate material 6 after construction, the filling material M does not adhere to the roller 52, etc. Therefore, the operation of cleaning the filling material M adhering to the roller 52, etc. is unnecessary.

[0032] When executing the processing method by the filling material supply device 10, the operator only needs to hold and support the second transport pipe 42 by 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 the 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 unit, and the upper plate 43 is an example of a pressing plate. The open-graded asphalt mixture layer of the road surface RS corresponds to an example of a pavement body.

[0034] As described above, the filler supply device 10 according to the first embodiment to which the present invention is applied is a device that infiltrates the filler M into the road surface RS having an open-graded asphalt mixture layer. The filler supply 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 sending out the filler M supplied through the first transport pipe 41 to the second transport pipe 42. The filler supply device 10 includes a tip plate member 6 placed on the road surface RS. In the filler supply device 10, the tip of the second transport pipe 42 is joined to the through hole 61 provided in the tip plate member 6. The filler supply device 10 imparts at least either a fluctuation in the delivery pressure of the filler M sent out from the second transport pipe 42 or vibration of the filler M by the pressure fluctuation imparting device 4. In the first embodiment, the filler supply device 10 imparts a fluctuation in the delivery pressure of the filler M sent out from the second transport pipe 42 by the pressure fluctuation imparting device 4.

[0035] According to this configuration, the filler M can be pressure-fed from the tip plate member 6 to the road surface RS, and the transport pressure of the filler M can be periodically fluctuated. Thereby, it is possible to generate disturbances in the pressure and flow of the filler M flowing into the road surface RS, and the filler M can be efficiently infiltrated into the open-graded asphalt mixture layer of a wider range of the road surface RS. Therefore, the filler can be infiltrated into the voids of the asphalt mixture layer after paving by a low-noise and simple method.

[0036] In the above 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 infiltrates from the tip plate member 6 into the open-graded asphalt mixture layer of the road surface RS. 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 infiltrated into the open-graded asphalt mixture layer.

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

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

[0040] The processing method for processing the open-graded asphalt mixture layer of the road surface RS by the filling material supply device 10 is a processing method for the pavement having an open-graded asphalt mixture layer, which infiltrates the filling material M into the pavement. This processing method supplies the filling material M to the pressure fluctuation applying device 4 through the first transport pipe 41 connected to the pump 32, sends the filling material M to the second transport pipe 42 by the pressure fluctuation applying device 4, and places the tip plate material 6 joined to the tip of the second transport pipe 42 on the road surface RS. Then, by the pressure fluctuation applying device 4, at least one of the fluctuation of the delivery pressure of the filling material M delivered from the second transport pipe 42 and the vibration of the filling material M is applied to infiltrate the filling material M into the road surface RS on which the tip plate material 6 is placed. The processing method for the pavement of the first embodiment applies the fluctuation of the delivery pressure of the filling material M delivered from the second transport pipe 42 by the pressure fluctuation applying device 4.

[0041] According to this method, the filler M can be pumped from the tip plate material 6 to the road surface RS, and the transport pressure of the filler M can be periodically varied. Thereby, it is possible to generate disturbances in the pressure and flow of the filler M flowing into the road surface RS, and the filler M can be efficiently infiltrated into the open-graded asphalt mixture layer of a wider range of the road surface RS. Therefore, the filler can be infiltrated into the voids of the asphalt mixture layer after paving by a method with low noise and simplicity.

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

[0043] In FIGS. 4 and 5, the X-axis, Y-axis, and Z-axis are shown. The X-axis, Y-axis, and Z-axis are orthogonal to each other, and the Z-axis indicates the vertical direction perpendicular to the road surface RS. In the truck 2, the vibration applying device 7, and the concrete vibrator 8, 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 front, and the positive direction of the Z-axis is the up.

[0044] The filler supply system 1A includes a filler supply device 10A that supplies the filler M to the road surface RS to be constructed, and is a system that infiltrates the filler M into the road surface RS. In the filler supply system 1A, the same reference numerals are given to the parts common to the configuration described in the first embodiment, and the description thereof is omitted.

[0045] The filler supply device 10A includes a vibration applying device 7 in place of the pressure fluctuation applying device 4 in the configuration of the filler supply device 10 described in the first embodiment. The vibration applying device 7 is used together with a vibration generating device including a vibrating body. In the present embodiment, a concrete vibrator 8 is exemplified as the vibration generating device. The concrete vibrator 8 is generally used in a construction method for placing concrete and is a device that applies vibration to the concrete poured into a formwork. The concrete vibrator 8 includes a concrete vibrator main 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 accommodated inside thereof. When the motor 82 rotates the flexible wire, the flexible wire collides with the flexible hose 83, causing the entire flexible hose 83 to vibrate periodically.

[0046] As shown in FIGS. 5(A) and 5(B), the vibration applying device 7 includes an upper plate 71, a bottom plate 72, a third transport pipe 73, and a hose accommodating portion 74. The vibration applying device 7 is placed on the road surface RS when the vibration applying device 7 is in use. In this use state, 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 arranged so as to sandwich the third transport pipe 73.

[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 a rigid body. Preferably, the third transport pipe 73 is made of a material that elastically deforms and vibrates when vibration is applied. Specifically, metals or synthetic resins can be used as the material of the third transport pipe 73.

[0049] One end of the third transfer pipe 73 is connected to the first transfer pipe 41, and the other end is connected to the second transfer pipe 42. The third transfer pipe 73 is a pipe that guides the filler M sent by the pump 32 to the first transfer pipe 41 to the second transfer pipe 42. The third transfer pipe 73 has, for example, a plurality of bent portions and is arranged in a meandering shape as shown in FIG. 5(A) in the vibration applying device 7.

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

[0051] When the concrete vibrator 8 operates with the flexible hose 83 mounted in the hose accommodating portion 74, vibration is applied to at least a part of the vibration applying device 7 by the flexible hose 83. As a result, vibration is applied to the filler M flowing through the third transfer pipe 73, and the filler M sent from the third transfer pipe 73 to the second transfer pipe 42 is in a vibrating state. The vibration of the filler M becomes, for example, a pressure fluctuation of the filler M flowing out from the tip plate member 6 through the second transfer pipe 42.

[0052] In the filler supply device 10A, a check valve 47 may be provided in the first transfer pipe 41. In this case, when a pressure fluctuation occurs in the filler M in the third transfer pipe 73, the check valve 47 can suppress a high pressure from being applied to the pump 32 through the first transfer pipe 41. Thereby, the operation of the pump 32 is not hindered, and the vibration of the flexible hose 83 can be efficiently used for vibrating the filler M flowing out from the tip plate member 6.

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

[0054] The noise and vibration when applying vibration to the vibration applying device 7 by the operation of the concrete vibrator 8 are significantly smaller than those when hitting the road surface RS with the plate compactor 5 or the tamping rammer. Therefore, the filler M can be infiltrated into the open-graded asphalt mixture layer of the road surface RS by a method with less noise.

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

[0056] As described above, the filler supply device 10A according to the second embodiment to which the present invention is applied is a device for infiltrating the filler M into the road surface RS having an open-graded asphalt mixture layer. The filler supply device 10A includes a first transport pipe 41 connected to the pump 32, and a vibration applying device 7 connected to the first transport pipe 41 and sending out the filler M supplied through the first transport pipe 41 to the second transport pipe 42. The filler supply device 10A includes a tip plate material 6 placed on the road surface RS. In the filler supply 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 supply device 10A applies at least one of the fluctuation of the sending pressure of the filler M sent out from the second transport pipe 42 and the vibration of the filler M by the vibration applying device 7. In the second embodiment, the filler supply device 10A applies vibration to the filler M sent out from the second transport pipe 42 by the vibration applying device 7.

[0057] According to this configuration, when pumping the filling material M from the tip plate material 6 to the road surface RS, periodic fluctuations or vibrations of pressure can be applied to the filling material M. As a result, turbulence is generated in the flow of the filling material M flowing into the road surface RS, and the filling material M can be efficiently infiltrated into the open-graded asphalt mixture layer of a wider range of the road surface RS. Therefore, the filling material can be infiltrated into the voids of the asphalt mixture layer after paving by a low-noise and simple method.

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

[0059] The vibration applying 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 applying device 7 can accommodate a flexible hose 83 as a vibrating body between the upper plate 71 and the bottom plate 72.

[0060] According to this configuration, vibration can be easily applied to the filling material M by using a vibration generating device such as the concrete vibrator 8. For this reason, the filling material can be infiltrated into the voids of the asphalt mixture layer after paving by a low-noise and simple method.

[0061] Each of the above embodiments shows a specific example to which the present invention is applied, and does not limit the form to which the invention is applied.

[0062] For example, in each of the above embodiments, the configuration in which the tank 31 for storing the filling material M and the pump 32 are mounted on the loading platform 21 of the truck 2, which is a self-propelled vehicle, was described, but this is just an example. In the configuration where the truck 2 is equipped with the tank 31 and the pump 32, it is convenient to transport the filling material M, the tank 31, and the pump 32, but these 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 first embodiment described above, the flexible pipe 45 was described as being arranged to form one layer between the upper plate 43 and the bottom plate 44 of the pressure fluctuation applying device 4, but this is just an example. The flexible pipe 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 a plurality of layers.

[0064] In the first embodiment described above, the pressure fluctuation applying 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 that resists the impact force by the plate compactor 5. Also, the device that presses the pressure fluctuation applying device 4 is not limited to the plate compactor 5, and a tamping rammer or various compacting machines may be used. These devices and the plate compactor 5 may be provided with an engine that uses fuel as a drive unit, or may be configured to include an electric motor as a drive unit.

[0065] In the first embodiment described above, a member having a function of shock absorption or vibration suppression may be arranged on the ground contact surface where the bottom plate 44 contacts the road surface RS. For example, members such as plate-shaped, column-shaped, or spherical members may be arranged on the ground contact surface of the bottom plate 44, and this member may be composed of anti-vibration rubber or other elastic members. 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 tank 31 is connected to the suction side of the pump 32 via a supply pipe 33, and a transport pipe 141 is connected to the discharge side of the pump 32. The pump 32 pumps the filling material M supplied from the tank 31 through the supply pipe 33 to the transport pipe 141.

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

[0073] A through hole 61 is provided in the tip plate member 6. The tip of the transport pipe 141 is joined to the through hole 61 of the tip plate member 6. There is no gap between the tip of the transport pipe 141 and the through hole 61, and the filling material M discharged from the transport pipe 141 flows out from the lower surface of the tip plate member 6 through the through hole 61.

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

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

[0076] [4. Fourth Embodiment] The fourth embodiment is a method for processing a pavement. This processing method is applied to the filler supply device 10B according to the third embodiment. FIG. 7 is a flowchart of a method for processing a pavement. An example of the pavement is an open-graded asphalt mixture layer. The pavement is processed by infiltrating cement milk M as an example of the filler M into the voids of this asphalt mixture layer.

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

[0078] Place the tip plate material 6 on one construction area E1 (step 2). Step 2 corresponds to an example of a placement process of placing the tip plate material 6 having the through hole 61 on one construction area E on the road surface RS. Note that 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 a gap. Next, drive the pump 32 to pump the cement milk M through the transport pipe 141 (step 3). Step 3 corresponds to an example of a pumping process of pumping a filler from the through-hole 61 into 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 embodiment and the second embodiment.

[0079] FIG. 9 is a cross-sectional view of a road surface RS on which the tip plate member 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-graded asphalt mixture layer 171 and an open-graded asphalt mixture layer 173 formed on the coarse-graded asphalt mixture layer 171. The open-graded asphalt mixture layer 173 is a mixture layer having innumerable voids.

[0080] Place the tip plate member 6 on the open-graded asphalt mixture layer 173, and drive the pump 32 so that the cement milk M pumped through the transport pipe 141 penetrates into the open-graded asphalt mixture layer 173 from the lower surface of the tip plate member 6 through the through-hole 61. The road surface RS and the tip plate member 6 are in close contact with each other, and the pumped cement milk M penetrates into the voids of the open-graded asphalt mixture layer 173 and spreads over the entire lower region of the tip plate member 6.

[0081] In this state, when the cement milk M is further pumped, the cement milk M that has spread over the entire lower region of the tip plate member 6 overflows outward from the outer peripheral edge of the tip plate member 6 as indicated by the arrow SM (step 4). Step 4 corresponds to an example of an overflow process of causing the filler to overflow from the outer edge portion of the tip plate member 6.

[0082] The state where the cement milk M overflows outward from the outer peripheral edge of the tip plate member 6 can be visually confirmed. After confirming that the cement milk M has overflowed outward, stop driving the pump 32 and stop pumping the cement milk M (step 5). In this step 5, the penetration 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 delivery pipe 141, the pumping of the cement milk M can be stopped by closing the opening / closing switching valve (not shown) without stopping the drive of the pump 32.

[0083] When the penetration 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 does not move to another construction area E2, the process ends.

[0084] If there is another construction area E2 among the areas partitioned by the marking process in step 1, return 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 repeat, steps 2 to 5 are, once again, to remove the tip plate 6 from one construction area E1 and move the tip plate 6 to another construction area E2. When moving the tip plate 6 to another construction area E2, if the operator holds the delivery pipe 141 and moves it, the tip plate 6 can be easily moved together with the delivery pipe 141.

[0085] Next, drive the pump 32 and pump the cement milk M to another construction area E2 through the delivery pipe 141 (step 3). Here, if a switching valve (not shown) for opening and closing is provided in the delivery pipe 141, the pump 32 can be driven in advance, and the cement milk M can be pumped by opening the opening / closing switching valve (not shown). Thereby, as shown in FIG. 9, the cement milk M penetrates into the open-graded asphalt mixture layer 173 from the lower surface of the tip plate 6 through the through-hole 61.

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

[0087] Cement milk M penetrates into the road surface RS while spreading along the lower surface of the tip plate 6. The cement milk M that has spread throughout the lower region overflows outward from the outer peripheral edge of the tip plate 6 as indicated by the arrow SM (step 4). When it is confirmed that the cement milk M has overflowed outward from the outer peripheral edge of the tip plate 6, the drive of the pump 32 is stopped and the pumping of the cement milk M is stopped (step 5).

[0088] When the penetration operation of the cement milk M in one construction area E1 is completed, it proceeds to step 6 to determine whether to repeat steps 2 to 5 again. If it does not move to another construction area E2, the process ends. If it moves to another construction area E2, steps 2 to 5 are repeated again. In this way, the penetration operation to all the construction areas E is repeated, and when the penetration to all the construction areas E is completed, the processing of the open-graded asphalt mixture layer (pavement) 173 is completed.

[0089] In this processing method, since the road surface RS is not directly struck by a plate compactor or the like as in the conventional method, noise can be suppressed. Also, after construction, although the cement milk M adheres to the grounding surface of the tip plate 6, there is no situation where the cement milk M adheres to a plate compactor or the like as in the conventional method, so operations such as cleaning the cement milk M from machines such as the plate compactor become unnecessary.

[0090] When considering the operation of moving the tip plate 6 from one construction area E1 to another construction area E2, it is preferably small and lightweight. On the other hand, when pumping the cement milk M, it is not desirable for the tip plate 6 to float due to the pressure.

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

[0092] In the above-described 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 penetrates from the tip plate member 6 into the open-graded asphalt mixture layer of the road surface RS. 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 penetrated into the open-graded asphalt mixture layer.

[0094] A method for processing a pavement for infiltrating cement milk M into the open-graded asphalt mixture layer 173 of the road surface RS, including a placing step of placing a tip plate member 6 having a through-hole 61 on a single construction area E1 on the road surface RS, a pumping step of pumping cement milk M from the through-hole 61 into the open-graded asphalt mixture layer 173, and an overflow step of causing the cement milk M to overflow from the outer edge portion of the tip plate member 6. After the overflow step, move to another construction area and repeat the placing step, the pumping step, and the overflow step in order again. According to this configuration, the cement milk M can be infiltrated into the open-graded asphalt mixture layer 173 after paving by a low-noise and simple method.

[0095] [5. Fifth Embodiment] The fifth embodiment is a method for processing a pavement. This processing method is applied to the filler supply devices 10A and 10B according to the first and second embodiments. FIG. 10 is a flowchart of a method for processing a pavement. The fifth embodiment is different from the fourth embodiment in the pumping step (step 31) of pumping the filler from the through-hole 61 into the open-graded asphalt mixture layer 173. Since the other steps are the same as those in the fourth embodiment, the description is omitted. As shown in FIG. 8, the plurality of construction areas E are square. Also in the fifth embodiment, although not shown, it is desirable that the shape of the tip plate member 6 be a square having the same dimensions as the construction area E. Further, the tip plate member 6 is preferably a flexible plate member made of rubber, silicone, or other elastomers.

[0096] In the pumping process of step 31, at least one of the fluctuations in the delivery pressure of the cement milk M and the vibration of the cement milk M is imparted to the cement milk M. The fluctuations in the delivery pressure of the cement milk M are 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 fluctuations in the delivery pressure of the cement milk M and the vibration of the cement milk M are not limited to those imparted by the above-described pressure fluctuation imparting device 4 and vibration imparting device 7. They can be imparted by any method.

[0097] In this processing method, since the road surface RS is not directly struck by a plate compactor or the like as in the prior art, noise can be suppressed. Also, although the cement milk M adheres to the grounding surface of the tip plate material 6 after construction, there is no situation where the cement milk M adheres to a plate compactor or the like as in the prior art, so the operation of cleaning the cement milk M from a machine such as a plate compactor becomes unnecessary.

[0098] Also, in the pumping process, at least one of the fluctuations in the delivery pressure of the cement milk M and the vibration of the cement milk M is imparted to the cement milk M, so pulsation occurs in the transport pressure of the cement milk M, and turbulence occurs in the pressure and flow of the cement milk M flowing out from the lower surface of the tip plate material 6. According to this configuration, the cement milk M can be efficiently infiltrated into the open-graded asphalt mixture layer 173 after paving, and in step 31, the pumping time can be shortened.

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

[0100] Therefore, according to this processing method, compared with the case where the cement milk M is sprayed or injected onto the road surface RS under a uniform pressure as in the prior art, the cement milk M can be efficiently infiltrated into a wider range of the road surface RS.

[0101] According to this processing method, the transport pressure of the cement milk M can be periodically varied. Thereby, turbulence can be generated in the pressure and flow of the cement milk M flowing into the road surface RS, and the cement milk M can be efficiently infiltrated into the open-graded asphalt mixture layer 173 of a wider range 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 can be made.

Explanation of Reference Numerals

[0103] 1, 1A, 1B Filler supply system 4 Pressure fluctuation applying device (fluctuation applying portion) 5 Plate compactor 6 Tip plate material 7 Vibration applying device (fluctuation applying portion) 8 Concrete vibrator 10, 10A, 10B Filler supply device 31 Tank 32 Pump 33 Supply pipe 41 First transport pipe 42 Second transport pipe 43 Upper plate (pressing plate) 44 Bottom plate 45 Flexible pipe 47 Check valve 51 Frame body 52 Rolling pressure plate 53 Handle 61 Through hole 71 Upper plate 72 Bottom plate 73 Third transport pipe 74 Hose storage portion 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 Filling Material (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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