Pavement surface treatment method

Abstract

To provide a pavement surface treatment method for easily grinding and cleaning the surface of pavement.SOLUTION: A pavement surface treatment method in which a cement-milk is filled and solidified in a void of pavement made of an open-grained asphalt mixture, a construction range is surrounded by an iron ball scattering prevention tool, iron balls are scattered in the construction range, the iron balls are hit by a rammer from above, and the pavement surface is hit via the iron balls to grind and clean the pavement surface.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a pavement surface treatment method. [Background technology]

[0002] Conventionally, there has been a pavement surface treatment technology in which cement milk is filled into voids inside a pavement made of an open-graded asphalt mixture, the cement milk is solidified, and then the surface of the pavement is ground to expose the aggregate contained in the pavement. Patent Document 1 discloses a pavement surface treatment technology in which a shot blasting machine is used on the surface of the pavement filled with cement milk within the application area to scrape off the asphalt on the surface of the aggregate, the surface of the aggregate, and the surface of the cement milk, thereby exposing the aggregate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-92096 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology of Patent Document 1 requires the use of a shot blasting machine regardless of the size of the area of ​​the construction work, and because the shot blasting machine is large, there is a problem that when the area of ​​the construction work is small, pavement surface treatment cannot be carried out easily. The present invention has been made in view of the above circumstances, and has an object to provide a pavement surface treatment method for easily abrasively cleaning the surface of a pavement. [Means for solving the problem]

[0005] In the pavement surface treatment method of the present invention, cement milk is filled into voids in a pavement consisting of an open-graded asphalt mixture and solidified, the treatment area is enclosed with an iron ball scattering prevention device, iron balls are scattered within the treatment area, and the iron balls are struck from above with a rammer, and the pavement surface is struck by the iron balls to abrasively clean the pavement surface. Effect of the Invention

[0006] According to the present invention, by using a rammer, the machine required for abrasive cleaning of the pavement surface can be made compact, and the pavement surface can be abrasive cleaned easily. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a surface layer remover on a deck slab. [Diagram 2] FIG. 2 is a view taken along the line II in FIG. [Diagram 3] Overview of construction area P. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] [1. Configuration of the embodiment] Fig. 1 is a perspective view of the rammer 1. Fig. 2 is a view taken along the line II in Fig. 1. For ease of explanation, a support shaft 9, which will be described later, is not shown in Fig. 2.

[0009] As shown in Fig. 1, the rammer 1 comprises an engine prime mover 2, a vibrator 5 connected to the prime mover 2, and an impact unit 3. A support shaft 9 is attached to the impact unit 3 located at the bottom of the vibrator 5 via a bellows 7. A rolling plate 10 is attached to the bottom of the support shaft 9, and an attachment 11 is attached to the rolling plate 10 with a plate-shaped rubber sheet 34 shown in Fig. 2 sandwiched between them. The prime mover 2 is not limited to an internal combustion engine, and may be an electric motor. The rolling plate 10 is made of wood.

[0010] The warped portion 10U of the rolling plate 10, which is the front portion of the rolling plate 10, is bent upward. The warped portion 12U of the iron plate, which is the front portion of the attachment 11, is bent upward so as to fit along the surface of the bent rolling plate 10. The warped portion 12U of the iron plate is located in front of the striking unit 3 in the traveling direction.

[0011] 1 and 2, the attachment 11 has a front wall 16 at the front, a rear wall 18 at the rear, and two side walls 20, one on each side. In other words, the attachment 11 is a box-shaped member without a lid, and the rolling plate 10 is disposed so as to be surrounded by the front wall 16, the rear wall 18, and the side walls 20.

[0012] The attachment 11 has a box-shaped member 13 having an opening 15 at its upper portion. The sides of the rolling plate 10 are surrounded by four walls, namely, a front wall 16, a rear wall 18, and a side wall 20. The sides of the rolling plate 10 are in contact with or located near the front wall 16, the rear wall 18, and the side wall 20.

[0013] The front wall 16 is provided with a front pressure plate 22 at its upper portion, and a front height adjusting plate 26 is provided between the upper surface of the front wall 16 and the front pressure plate 22. The rear wall 18 is provided with a rear pressure plate 24 at its upper portion, and a rear height adjusting plate 28 is provided between the upper surface of the rear wall 18 and the rear pressure plate 24.

[0014] The front pressure plate 22 and the rear pressure plate 24 are each provided with three through holes 30, and the front wall 16 and the rear wall 18 are formed with screw holes 32 in a number corresponding to each of the through holes 30. In addition, the front height adjustment plate 26 and the rear height adjustment plate 28 are provided with through holes at positions corresponding to each of the through holes 30.

[0015] The front pressure plate 22 and the rear pressure plate 24 are fixed to the front wall 16 and the rear wall 18 by three fasteners 40 via three through holes 30. The width of the front pressure plate 22 and the rear pressure plate 24 in the short side direction is large enough not to interfere with the lower part of the support shaft 9.

[0016] The rolling plate 10 is fixed by being pressed against the inside of the box-shaped member 13 by the front pressing plate 22 and the rear pressing plate 24. A rubber sheet 34 is disposed on the inside of the box-shaped member 13, and the rolling plate 10 is disposed on the rubber sheet 34.

[0017] The height including the front wall 16 and the front height adjusting plate 26 and the height including the rear wall 18 and the rear height adjusting plate 28 are formed to be slightly lower than the upper surface of the rolling plate 10 arranged on the rubber sheet 34. The front height adjusting plate 26 and the rear height adjusting plate 28 may be changed to adjusting plates of different thicknesses depending on the thickness of the rubber sheet 34 and the rolling plate 10. The thicknesses of the front height adjusting plate 26 and the rear height adjusting plate 28 may be adjusted by the thickness of the rubber sheet 34 without changing them.

[0018] By fastening the front pressure plate 22 and the rear pressure plate 24 with a plurality of fasteners 40, the rubber sheet 34 is compressed and the rolling plate 10 is fixed to the inside of the box-shaped member 13. With this configuration, there is no need to process projections or bolt holes in the rolling plate 10 when attaching the attachment 11, and a general rammer can be used as is, improving versatility. Also, because the rubber sheet 34 is compressed and positioned inside the attachment 11, the impact on the worker is mitigated and noise generation can be reduced.

[0019] 2, the rubber sheet 34 is disposed so as to be in contact with the upper surface 12A of the iron plate 12. The front portion of the rubber sheet 34 is bent so as to be aligned with the rolling plate warped portion 10U and the iron plate warped portion 12U, forming a rubber sheet warped portion 34U.

[0020] The thickness of the rubber sheet 34 is about one-fifth the thickness of the rolling plate 10. For example, when the thickness of the rolling plate 10 is 50 mm, the thickness of the rubber sheet 34 is 10 mm. The material of the rubber sheet 34 is preferably hard rubber, for example. In a plan view, the size of the rubber sheet 34 is smaller than the size of the rolling plate 10.

[0021] 1, the rolling plate 10 has two presser plates 14, one on each side, on its upper surface. The presser plates 14 increase the rigidity of the rolling plate 10 and are substantially rectangular in plan view. The presser plates 14 are fixed to the upper surface of the rolling plate 10 by three fasteners 42. The attachment 11 includes a front wall 16, a rear wall 18, and two side walls 20, and a front holding plate 22, a front height adjusting plate 26, a rear holding plate 24, and a rear height adjusting plate 28 are arranged on the front wall 16 and the rear wall 18. According to this configuration, the section modulus of the attachment 11 is increased, and the rigidity of the attachment 11 against bending stress is increased.

[0022] [2. Effect] FIG. 3 is a diagram showing an outline of the construction area P. As shown in FIG. An operator uses a rammer 1 to grind and clean a working area P on the surface of a pavement G made of an open-graded asphalt mixture in which cement milk filled in voids has solidified. In the pavement surface treatment method according to the present invention, as shown in FIG. 3, a working area formation step is first performed in which a formwork 50 is installed to determine the working area P. For example, the area of ​​the working area P is a maximum of approximately 10 square meters. The working area P is the surface of the pavement G surrounded by the formwork 50. The formwork 50 is formed in a plate shape, and is formed of a wooden formwork that surrounds the working area P. The formwork 50 is supported by supports 50A so as to stand vertically on the pavement G. The formwork 50 may also be directly fixed to the pavement G by concrete nails or the like.

[0023] After the processing area P is formed in the processing area forming process, a scattering process is performed in which an abrasive material 52 is scattered in the processing area P, as shown in Fig. 3. The abrasive material 52 is an abrasive material used in a shot blasting machine, and is an iron ball. The abrasive material has a diameter of 1 mm, for example. The material and size of the abrasive material 52 can be changed as appropriate.

[0024] It is preferable that the abrasive is dispersed uniformly over the entire treatment area P, but as shown in FIG. 3, gaps 54 may be present.

[0025] After the abrasive cleaning material 52 is sprayed in the spraying process, the abrasive cleaning process is performed. As shown in FIG. 1, the rammer 1 operates a vibrator 5 by a prime mover 2, and vibrates a rolling plate 10 in the direction of a support shaft 9 via a bellows 7.

[0026] As the rolling plate 10 vibrates, the iron plate 12, shown diagrammatically in Fig. 3, strikes the surface of the pavement G in the construction area P. The worker drives the rammer 1 and moves the iron plate 12 as shown by the imaginary line in Fig. 3, thereby striking the entire construction area P. The time for striking the construction area P is, for example, 10 minutes.

[0027] In the grinding and cleaning process, when hitting gaps 54 where the abrasive material 52 has not been uniformly spread, the worker may use a broom or the like to level the abrasive material 52. Also, if the amount of abrasive material 52 is insufficient, the spreading process may be performed again during the grinding and cleaning process. The grinding and cleaning process exposes the aggregate in the construction area P, improving the appearance of the pavement G.

[0028] After the grinding and cleaning step, a cleaning step is performed in which the abrasive material 52 remaining in the processing area P is removed by using a cleaning tool. When the abrasive material 52 is an iron ball, the abrasive material 52 can also be removed by using a magnet.

[0029] In addition, in the blasting process, a rammer 1 not including the attachment 11 and the iron plate 12 may be used. In that case, the iron plate member is placed stationary in the processing area P, and the stationary iron plate member is struck with the rolling plate 10. In this case, the worker performs the blasting process by repeatedly moving the iron plate member within the processing area P and striking it with the rolling plate 10. That is, an iron plate member is placed on top of the abrasive material 52 scattered within the construction area P, and the abrasive material 52 is struck from above the iron plate member with the rolling plate 10 of the rammer 1, and the surface of the pavement G is struck via the abrasive material 52 to abrade and clean the surface of the pavement G.

[0030] A rubber sheet 34 is sandwiched between the rolling plate 10 and the iron plate 12, and the rubber sheet 34 absorbs vibrations. In addition, the attachment 11 includes a front wall 16, a rear wall 18, and a side wall 20, so that the side surface of the rolling plate 10 and the rubber sheet 34 are covered. Therefore, the rolling plate 10 and the rubber sheet 34 can be prevented from wearing out.

[0031] [3. Effects] As described above, in this embodiment, the gaps in the pavement G made of an open-graded asphalt mixture are filled with cement milk and solidified, and then the construction area P is enclosed with a formwork 50 (iron ball scattering prevention device), abrasive material 52 (iron balls) are scattered within the construction area P, and the abrasive material 52 is struck from above with a rammer 1, so that the surface of the pavement G is struck via the abrasive material 52 to abrade and clean the surface of the pavement G. This is a pavement surface treatment method. According to this configuration, by using the rammer, the machine required for abrading the pavement surface can be made smaller, and the pavement surface can be abraded and cleaned easily.

[0032] In this embodiment, an iron plate 12 may be attached to the rolling plate 10 of the rammer 1, and the iron plate 12 may strike the surface of the pavement G via the abrasive material 52 to abrasively clean the surface of the pavement G. According to this configuration, damage to the rolling plate 10 caused by the abrasive material 52 can be prevented.

[0033] In addition, in this embodiment, an iron plate member may be placed on top of the abrasive material 52 scattered within the construction area P, and the abrasive material 52 may be struck from above the iron plate member with the rolling plate 10 of the rammer 1, and the surface of the pavement G may be struck via the abrasive material 52 to abrade and clean the surface of the pavement G. According to this configuration, damage to the rolling plate 10 caused by the abrasive material 52 can be prevented.

[0034] In this embodiment, the formwork 50 is formed of a wooden formwork surrounding the construction area P. According to this configuration, the abrasive material can be prevented from scattering outside the processing area P.

[0035] In addition, in this embodiment, after striking the surface of the pavement G to abrade the surface of the pavement G, the remaining abrasive material 52 within the construction area P surrounded by the formwork 50 is removed using a cleaning tool or a magnet. According to this configuration, the abrasive can be easily removed.

[0036] [4. Other embodiments] The present invention is not limited to the above-described embodiments, and various modifications are possible. Embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0037] 1 Rammer 3. Striking section 10 Rolling plate 11 Attachment 12 Iron Plate 50 Formwork (Iron ball scattering prevention equipment) 52 Abrasives (iron balls)

Claims

1. Cement milk is filled into the voids of the pavement consisting of an open-graded asphalt mixture and allowed to harden. The construction area is enclosed with equipment to prevent the iron ball from scattering. Scatter iron balls within the construction area, The iron ball is struck from above with a rammer, The pavement surface is struck by the iron ball to abrasively clean the pavement surface. Pavement surface treatment methods.

2. An iron plate is attached to the rolling plate of the rammer, and the iron plate strikes the pavement surface via the iron ball to abrasively clean the pavement surface. A method for treating a pavement surface according to claim 1.

3. An iron plate member is placed on the iron balls scattered within the construction area, The iron ball is struck from above the iron plate member by the rolling plate of the rammer, and the pavement surface is struck by the iron ball to abrasively clean the pavement surface. A method for treating a pavement surface according to claim 1.

4. The iron ball scattering prevention device is formed of a wooden formwork surrounding the construction area. A method for treating a pavement surface according to claim 1.

5. After striking the pavement surface to abrade and clean the pavement surface, the iron balls remaining within the working area surrounded by the iron ball scattering prevention device are removed using a cleaning tool or a magnet. A method for treating a pavement surface according to claim 1.

Images