JP2006192674A - Manufacturing method of concrete block with recessed groove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that while it is necessary to use a formwork, wherein a protruded part for forming a recessed part is provided to the inner surface of a frame plate, heretofore in order to form the recessed groove, which guides water, to the back or reverse surface of a concrete block but the structure of the formwork becomes complicated and, at the time of the disassembling of the formwork, the concrete block is hard to release and the mouth edge part of the recessed groove is easily broken to fall at the time of mold release. <P>SOLUTION: The formwork 1 of which the upper surface is opened, a set frame 2, to which a plurality of rod-shaped bodies 21 for forming the recessed groove are integrally attached, and a vibrator 3 for vibrating the formwork 1 are used in order to form the water guiding recessed groove 13 (or 13A) to the back 12 (or 12A) of a block main body and, in a state that the formwork 1 is filled with ready-mixed concrete 6 up to a predetermined height and the set frame 2 is placed on the upper surface of the reading-mixed concrete 6, the formwork 1 is vibrated by a vibrator 3 to allow the rod-shaped bodies 21 of the set frame 2 to sink in the upper surface part of the ready-mixed concrete 6 by the depth of the recessed groove 13. After the ready-mixed concrete 6 is cured, the set frame 2 is detached and the formwork 1 is disassembled to manufacture the concrete block with the recessed groove. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method of manufacturing a concrete block such as a retaining wall block or a paving board, for example, and more specifically, a concave for water guidance on the back surface (in the case of a retaining wall block) or the back surface (in the case of a paving board) of the block body. The present invention relates to a method for producing a concrete block with concave grooves in which grooves are formed.

  Traditionally, concrete retaining wall blocks have been used to prevent the collapse of earth and sand on the side of the road, the side of the built-up land, or the mountain surface, while the sidewalks (including sites such as parks and parking lots) Concrete paving boards are used. As the retaining wall block, for example, a cognitive block or a rectangular parallelepiped block has been conventionally used, and as a pavement board, a thick concrete block called a concrete flat plate or interlocking has been conventionally used. .

  As a conventional retaining wall structure using the knowledge block, there is a leaning retaining wall shown in FIG. In the retaining wall structure shown in FIG. 13, a large number of knowledge blocks 60, 60,... Are assembled vertically and horizontally, and a back-filled concrete layer 61 is placed on the back side of each knowledge block 60, 60,. Further, the back side of the backfilled concrete layer 61 is filled with crushed stone (the crushed stone layer 62 is formed), and then the soil S is backfilled and completed on the back side of the crushed stone layer 62. As a leaning type retaining wall using a cognitive block, for example, there is one shown in Patent Document 1 (Japanese Patent Laid-Open No. 2000-355949).

  In this type of retaining wall, there is embedded a drain pipe 63 that discharges water (permeated water) accumulated on the back side of the retaining wall to the outside of the retaining wall. The crushed stone layer 62 is a permeable layer for preventing water in the soil S from collecting on the back surface of the retaining wall. When the water in the soil S reaches the permeable layer (the crushed stone layer 62), The fluidity is improved, and the inflow of water into the drain pipe 63 (drainage outside the retaining wall) is promoted.

  By the way, the crushed stone layer 62 allows the osmotic water in the soil S on the back side of the retaining wall to flow down quickly. A partition formwork is assembled on the back side, and crushed stones are put into the partition formwork by 20-30 cm in height, compacted with a vibrator, and backfill soil S is put into the back of the partition formwork by 20-30 cm in height. After compacting, the partition form is removed, and the same operation is sequentially performed to form the entire retaining wall. Therefore, there is a problem that it takes a lot of time and cost to form the crushed stone layer 62.

  Therefore, the present applicant has already filed a patent application for a retaining wall block that can eliminate the crushed stone layer 62 on the back side of the retaining wall as described above (Japanese Patent Application No. 2004-244675). As shown in FIG. 14, the already-retained retaining wall block has a plurality of (5 in the illustrated example) longitudinal concave grooves 13, 13,... One continuous groove 14 is formed. Each of the concave grooves (vertical concave grooves 13 and lateral concave grooves 14) is for guiding water (permeated water) on the back side of the retaining wall downward as will be described later.

  The back surface 12 of the retaining wall block 10 with the recessed groove is covered with a water-permeable mat 9 (see reference numeral 9 'in FIG. 14). The water permeable mat 9 is formed by tying synthetic resin wires into a three-dimensional mesh shape and forming a mat shape having a thickness of 3 to 5 cm. In the illustrated example, the water permeable mat 9 has an area that can cover almost the entire back surface 12 of the block body. ing.

  The retaining wall block 10 with a recessed groove in FIG. 14 is constructed with a water permeable mat 9 as shown in FIG. That is, the rear surface of the retaining wall block 10 is covered with the water permeable mat 9 and the retaining wall blocks 10, 10... With the water permeable mat 9 are assembled vertically and horizontally with the groove 13 forming surface facing the back side. In addition, a retaining wall is constructed, and the soil S is filled directly (without the crushed stone layer) on the back surface (the back surface of each permeable mat 9) of the retaining wall. The retaining wall blocks 10 and 10 stacked one above the other are assembled in a state in which the vertical concave grooves 13 and 13 are continuous in the vertical direction.

  In the retaining wall structure of FIG. 15, the water-permeable mats 9, 9,... Are interposed between the back surfaces of the retaining wall blocks 10, 10,. When water penetrates to the water permeable mat 9 portion, the water smoothly flows into the water permeable mat 9. A part of the water flowing into the water-permeable mat 9 enters the concave grooves (vertical concave grooves 13 and lateral concave grooves 14) on the back surface of the retaining wall block 10, and the vertical concave grooves continuing vertically. 13 and 13 quickly flow down. The water flowing down through the concave grooves 13, 13,... Is discharged to the outside of the retaining wall through the drain pipe 16 penetrating the retaining wall, the water conduit 17 installed near the lower part of the rear surface of the retaining wall, and the like. .

  Thus, in the retaining wall using the retaining wall block 10 with the recessed groove and the water permeable mat 9, a crushed stone layer (reference numeral 62 in FIG. 13) for water guidance is not required on the rear surface side of the retaining wall, so the construction period is shortened. And cost reduction can be achieved.

  By the way, in order to concrete-mold the retaining wall block 10 with the recessed groove shown in FIG. 14, conventionally, a convex for forming the recessed grooves (vertical recessed grooves 13 and lateral recessed grooves 14) on the inner surface of the rear molded frame plate. Assembling the formwork in which the shape portion is formed and filling the formwork with the ready-mixed concrete, after the ready-mixed concrete is solidified, the formwork is disassembled to form the retaining wall block 10 with the recessed groove. .

  On the other hand, for example, a concrete pavement plate has been widely used as a pavement material for sidewalks. As a pavement structure using this type of concrete pavement plate, there is one shown in FIG. In the pavement structure shown in FIG. 16, a roadbed layer Q made of sand, crushed stone or the like is laid on a roadbed P made of soil, and a large number of concrete pavement plates 10B, 10B,. It is configured to spread vertically and horizontally. Therefore, in the pavement structure of FIG. 16, when raining, the rainwater penetrates through the joint M between the pavement boards 10B and 10B to the roadbed layer Q and the roadbed P, and the water is compared on the pavement surface. It has a structure that is difficult to collect.

  However, in the pavement structure of FIG. 16, when there is rainfall for a long time (or a large amount), the amount of rainwater that permeates the lower surface side of the pavement board 10B is the water retention capacity and drainage capacity on the roadbed layer Q and the roadbed P. There is a problem that rainwater accumulates on the road surface (on the paving board 10B).

  Therefore, the applicant has already filed a patent application for a pavement plate and its pavement structure that can efficiently drain rainwater that permeates the lower surface side of the pavement plate even when there is rainfall for a long time as described above. (Japanese Patent Application No. 2004-280874). The pavement board and pavement structure of this application are shown in FIGS. A pavement plate 10A shown in FIG. 17 has a plurality of (three in each) water guiding concave grooves 13A and 14A formed in a vertical and horizontal direction on a back surface 12A of a block main body 11A made of a concrete flat plate. . In the following description, the groove 13A is referred to as a longitudinal groove, and the groove 14A is referred to as a lateral groove.

  The pavement board 10A with concave grooves in FIG. 17 is used, for example, for pavement on sidewalks. In the pavement structure in FIGS. 18 and 19, a sheet 9A is laid on the roadbed layer Q on the roadbed P, and the sheet 9A A large number of pavement boards 10A with concave grooves are laid down vertically and horizontally. The sheet 9A is for preventing the clogs (vertical grooves 13A, lateral grooves 14A) on the back surface 12A of the pavement board from being clogged with soil. By covering the groove, the vertical and horizontal concave grooves 13A and 14A can be maintained as water guiding hollow passages (water flow resistance is small).

  And in the pavement structure of FIG.18 and FIG.19, each ditch | groove (vertical ditch | groove 13A, 13A, horizontal ditch | groove 14A, 14A) of each pavement board 10A, 10A adjacent vertically and horizontally is mutually connected. Therefore, rain water that has penetrated into the lower surface side of the pavement board 10A through the joint M or the like at the time of rain is received by the sheet 9A and enters the vertical and horizontal concave grooves 13A and 14A, and the rain water passes through the concave grooves 13A and 14A. It smoothly flows to the descending slope side (the side where the walking road boundary block R is installed), flows from the water guide T into the water collecting pipe U, and is collected in the water collecting rod V. Therefore, in the pavement structure using the grooved pavement plate 10A for water guidance in this way, rainwater does not accumulate on the pavement surface (pavement plate 10A) even if there is a long (large amount) rainfall.

  By the way, in order to concrete-mold pavement board 10A with a ditch shown in FIG. 17, conventionally, the convex part for forming a ditch | groove (vertical ditch | groove 13A, horizontal ditch | groove 14A) in the inner surface of a back surface molding frame board. Is assembled, and the concrete is filled with the ready-mixed concrete. After the ready-mixed concrete is solidified, the mold is disassembled to form a pavement plate 10A with a concave groove.

  As a method for molding a concrete product using a mold with a convex portion, for example, those disclosed in Japanese Patent Application Laid-Open No. 11-28710 (Patent Document 2) or Japanese Patent Application Laid-Open No. 2000-117719 (Patent Document 3) are shown. is there.

JP 2000-355949 A JP-A-11-28710 No. 2000-117719

  By the way, when forming the concave grooves (vertical concave grooves 13 and horizontal concave grooves 14) on the back surface 12 of the retaining wall block 10 as shown in FIG. 14, and on the back surface 12A of the pavement board 10A as shown in FIG. When forming the grooves (vertical concave grooves 13A, lateral concave grooves 14A), conventionally, a groove formed with a convex portion for forming a concave groove on the inner surface of the mold is used. The structure of the frame becomes complicated, and the cost for producing the mold becomes expensive. Also, in the case where the convex part for forming the concave groove is formed on the inner surface of the mold, the convex part of the frame plate is not fixed when the raw concrete filled in the mold is solidified and then the mold is disassembled. Since it bites into the wall surface, there is a problem that the frame plate with the convex portion is difficult to peel off from the outer surface of the block. In particular, as shown in FIG. 14 or FIG. 17, in the case where the longitudinal concave groove 13 (or 13A) and the lateral concave groove 14 (or 14A) are formed on the block rear surface 12 or the block rear surface 12A, the frame plate with convex portions Becomes more difficult to peel off. Also, if you try to forcibly peel off the frame plate with convex parts, there is a risk that the opening edge of the groove formed on the outer surface (back or back) of the block may fall off, resulting in a poor quality product. Furthermore, if the missing part is large, it becomes a defective product.

  Accordingly, the present invention provides a grooved concrete which is simple and can be formed into a grooved state easily in order to produce a concrete block with a grooved groove (a retaining wall block or a concrete pavement board) as described above. It aims at providing the manufacturing method of a block.

  The present invention has the following configuration as means for solving the above problems. The present invention is directed to a method of manufacturing a concrete block with a concave groove in which a concave groove for water guidance is formed on the back surface or the back surface of a block body made of a concrete molded product such as a retaining wall block or a paving board. .

The invention of claim 1 of the present application In the manufacturing method of the invention of claim 1 of the present invention, a mold frame for concrete molding whose upper surface is opened, a frame frame in which a plurality of rod-shaped bodies for forming concave grooves are assembled, and a mold This is performed using a vibration device that vibrates the frame.

  The upper surface of the mold frame is open, and the front, rear, left and right (four sheets) frame plates can be assembled and disassembled. The front, rear, left and right frame plates form the upper and lower surfaces and the left and right sides of the concrete block to be molded in the retaining wall block. The molded concrete block has four sides on the side of the pavement plate. Is formed. The front surface of the retaining wall block or the upper surface of the pavement plate is formed on the lower surface side (bottom plate) of the mold, and the rear surface of the retaining wall block or the rear surface of the pavement plate is formed on the upper surface of the mold frame.

  As the assembled frame, one in which the rod-like bodies for forming the concave grooves are integrally connected with a connecting material in a state where the rod-like bodies are juxtaposed at a predetermined interval is used. The juxtaposed state of the rod-like bodies is preferably parallel juxtaposition, but may be a non-parallel state (for example, a state in which the adjacent rod-like bodies cross each other). In addition, the ditch | groove formed in the back surface of the block for retaining walls is formed in the attitude | position which faces to an up-down direction in the construction state of this block for retaining walls. Moreover, it is good to form the ditch | groove formed in the back surface of a pavement board vertically and horizontally (for example, grid | lattice form). And this assembly frame is comprised by assembling | attaching each rod-shaped body according to the form of the ditch | groove which should be formed in a concrete block.

  The frame is preferably made of a material having a large specific gravity such as iron. In particular, since the framework used in the manufacturing method of claim 1 is submerged in the ready-mixed concrete only by vibration, a material having a specific gravity considerably larger than the specific gravity of the ready-mixed concrete (for example, iron is preferable in terms of cost). It is good to use the thing. In addition, although what was shape | molded with the synthetic resin material can be used as this assembly frame, in this case, it can respond by attaching the weight material of an appropriate weight to the upper surface of a synthetic resin assembly frame.

  The length and width, thickness (projection height of fresh concrete embedded part), number of use, etc. are determined by the size of the concrete block to be manufactured (retaining wall block or pavement board). . For example, in the case of a retaining wall block whose back view size is, for example, 50 cm in height and about 100 cm in width on the left and right sides, as a rod-like body, the length is 50 cm and the width is 3 to 6 cm. A protrusion having a protrusion height of about 3 to 5 cm may be used, and about 2 to 8 rods may be used as a set. In the case of a pavement made of concrete flat plate, a square with a side length of about 30 cm and a thickness of about 3 cm, each of the vertical and horizontal rod-like bodies is 30 cm in length and 5 to 10 mm in width. It is preferable to use a concrete-embedded part having a protruding height of about 5 to 10 mm, and use about 1 to 4 bars each as a set. The assembled frame is sized such that each rod-like body is accommodated between the opposed inner surfaces of the mold frame with almost no excess while being accommodated in the upper opening of the mold frame.

  The connecting material connecting each rod-shaped body may be assembled without connecting the upper surface of each rod-shaped body and contacting the ready-mixed concrete filled in the formwork, or up to the same protruding height as each rod-shaped body You may make it protrude and utilize for a horizontal concave groove formation. In addition, as for the part (each rod-shaped body) to be submerged in the ready-mixed concrete in the frame, if the cross section has an inverted trapezoidal shape or a semicircular shape, the frame can be easily removed after the concrete is solidified.

  This assembly frame has a settling prevention means for preventing each rod-like body from sinking further from the upper surface of a predetermined amount of ready-mixed concrete filled in the formwork at a position where it has sinked by the depth of the groove. It is good to provide (for example, the thing like a latching protrusion rod latched on the upper surface of a formwork).

  As the vibration device, a vibration motor can be used. For example, a vibration plate that can vibrate a base plate on which a mold is placed can be used. In addition, this type of mold vibration device has been generally used in the past when filling ready-mixed concrete in a mold with high density, and a manufacturer of a molded concrete product often has a normal facility. (In that case, there is no need to purchase a new vibration device).

  And the manufacturing method of the concrete block with a recessed groove of this-application Claim 1 is performed as follows. First, the mold is installed in such a posture that the upper surface side is opened, and the ready-mixed concrete is filled up to a predetermined height in the mold. In addition, the upper surface of the ready-mixed concrete filled in the mold is leveled.

  Next, with the frame placed on the upper surface of the ready-mixed concrete filled in the formwork, the formwork is vibrated with a vibration device, and the rod-shaped body of the formwork is formed into the depth of the groove in the upper surface portion of the ready-mixed concrete. Only sink. That is, when the formwork is vibrated, the ready-mixed concrete in the form also vibrates, and the frame placed on the ready-mixed concrete upper surface sinks under the upper surface of the ready-mixed concrete by its own weight. At this time, since the ready-mixed concrete is settled while pushing away on the lower surface side of each bar-shaped body, no air pool is generated in the bar-shaped body contact portion on the upper surface of the ready-mixed concrete. And when each rod-like body sinks into the upper surface of the ready-mixed concrete by a predetermined depth (concave groove formation depth), the sedimentation stops. At this point, if there is an excess or deficiency in the ready-mixed concrete in the formwork, the excess ready-mixed concrete is deleted or replenished. .

  And after the ready-mixed concrete in a formwork solidifies, a concrete block with a groove can be manufactured by removing a frame and dismantling a formwork.

  At the time of removal of the frame, the lower surface side of the rod-shaped body of the frame is sinking by a predetermined depth from the concrete upper surface solidified in the mold, but this frame has its opposite ends and remains as it is. It can be removed (peeled) from the top surface of the concrete by lifting upward. In addition, each frame plate of the mold can have a smooth inner surface and can be disassembled without any trouble.

Invention of Claim 2 In the manufacturing method of a concrete block with a recessed groove of the invention of Claim 2 of the present application, a vibration device that vibrates the mold and a pressing device that presses the assembled frame from above are used in combination. A hydraulic cylinder can be used as the pressing device.

  In the second aspect of the invention, the rod-shaped body of the frame is submerged from the upper surface of the ready-mixed concrete by a predetermined depth by pressing the frame from above with a pressing device during operation of the vibration device. I have to.

Thus, when the vibration of the formwork (including the internal ready-mixed concrete) by the vibration device and the pressing of the assembled frame by the pressing device are used in combination, each rod-like body of the assembled frame is surely submerged in the upper surface of the ready-mixed concrete. Moreover, even if it is hard-mixed ready-mixed concrete, each rod-shaped body of the frame can be sunk into the upper surface of the ready-mixed concrete.

Invention of Claim 3 of the Present Invention In the method of manufacturing a concrete block with a recessed groove according to the invention of claim 3 of the present application, a concrete molding mold having an open upper surface and a plurality of rod-shaped bodies for forming the recessed groove are assembled together. And a vibration device that vibrates the frame. As the mold frame and the assembly frame, those described in claim 1 can be used. In addition, a vibration motor can be adopted as a vibration device that vibrates the assembly frame. In the manufacturing method according to claim 3, the vibration device for formwork vibration according to claim 1 is unnecessary.

  And in this invention of Claim 3, in the state which filled the ready-mixed concrete to the predetermined height in a formwork and put the assembled frame on the upper surface of this ready-mixed concrete, the assembled frame is vibrated with a vibration device, and the rod shape of the assembled frame The body is sunk by the depth of the groove to be formed on the upper surface of the ready-mixed concrete, and after the ready-mixed concrete is solidified, the frame is removed and the formwork is dismantled.

  In the method of manufacturing a concrete block with a concave groove according to claim 3, the rod-shaped body of the frame is submerged into the upper surface of the ready-mixed concrete by directly vibrating the frame with a vibration device. Although the manufacturing method is different from this manufacturing method, the manufacturing method according to claim 3 can effectively sink the rod-shaped body.

  In the invention of each claim of the present application (Claims 1 to 3), a frame formed by integrating a plurality of rod-shaped bodies is placed on the upper surface of ready-mixed concrete filled in the mold, and the mold is vibrated (Claim 1). 2 and 2) or the frame is vibrated (in the case of claim 3), the rod-shaped body of the frame is submerged from the upper surface of the ready-mixed concrete to a predetermined depth, and the surface becomes the back or back surface of the concrete block. A concave groove is formed. Therefore, a mold with a convex portion is not necessary, and a simple one (which is inexpensive) can be used as the mold, so that there is an effect that the mold cost can be reduced.

  In the invention of each claim of the present application (Claims 1 to 3), the ready-mixed concrete in the mold is removed after solidification, but at that time, the ready-made concrete can be removed from the top surface of the concrete by lifting it upward. As a result, it is easy to remove the frame, and it is possible to manufacture a concrete block with a concave groove with good quality without losing near the opening edge of the concave groove formed in the retaining concrete block during the removal operation. can do.

  Further, in the invention of claim 2 of the present application, in order to sink the rod-shaped body of the frame from the upper surface of the ready-mixed concrete, the mold is vibrated by the vibration device and the frame is pushed downward by the pressing device. There is an effect that each rod-like body of the assembled frame can be pushed into the predetermined depth of the upper surface of the ready-mixed concrete in a short time. Further, in the case where the frame is forcibly pushed down by the pressing device in this way, the frame can be settled on the upper surface of the ready-mixed concrete without any trouble even if a hardened concrete is used as the ready-mixed concrete.

  Hereinafter, some embodiments of the present application will be described with reference to FIGS. 1 to 12. FIGS. 1 to 3 show the manufacture of a retaining wall block with a recessed groove according to the first embodiment (corresponding to claim 1). FIG. 4 shows the grooved retaining wall block manufactured in the embodiment of the present application, FIG. 5 to FIG. 6 show usage patterns of the recessed grooved retaining block of FIG. 7 shows a method of manufacturing a retaining wall block with a groove according to the second embodiment (corresponding to claim 2), and FIGS. 8 to 9 show a groove with a groove according to the third embodiment (corresponding to claim 3). FIG. 10 shows a method of manufacturing a retaining wall block, FIG. 10 shows a frame used in another embodiment, and FIG. 11 shows a modification of the first embodiment (corresponding to claim 1) (fourth embodiment). ) Shows a concrete pavement plate manufacturing method, and FIG. 12 shows the concrete pavement plate manufactured in the fourth embodiment.

  The manufacturing method of the first embodiment shown in FIGS. 1 to 3 manufactures the retaining wall block 10 with the recessed groove shown in FIG. 4, and the configuration of the retaining wall block 1 with the recessed groove is described first. To do.

  The retaining wall block 10 shown in FIG. 4 has five longitudinal grooves (hereinafter simply referred to as longitudinal grooves) 13, 13... Formed on the rear surface 12 of a rectangular parallelepiped block body 11. In addition, one lateral groove (hereinafter, simply referred to as a lateral groove) 14 and 14 is formed at each of the upper and lower positions of the back surface 12. Each vertical groove 13, 13... And each horizontal groove 14, 14 communicate with each other. For example, when a specific vertical groove 13 is clogged with soil, it flows down through the groove 13. The water to be supplied can flow into the adjacent vertical groove 13 through the horizontal groove 14. In another embodiment, the retaining wall block 10 with a recessed groove having only the longitudinal recessed grooves 13, 13,... (Without the lateral recessed grooves 14) can also be employed.

  This type of retaining wall block has an appropriate size and shape depending on the application and use place. In the retaining wall block 10 of FIG. 4, for example, the lateral width is 100 cm, the height is 50 cm, and the depth width. Is about 35cm in size and filled with the contents. Each of the vertical grooves 13, 13,... And each of the horizontal grooves 14, 14 has a trapezoidal cross section, an opening width of 5 cm, a bottom width of 4 cm, and a depth of about 3 cm. . Each numerical value of the retaining wall block 10 is not particularly limited, and can be appropriately changed in design.

  In the manufacturing method of the first embodiment shown in FIG. 1 to FIG. 3, a concrete molding mold 1 having an open top surface, five rod-shaped bodies 21, 21,. This is performed by using the frame 2 in which the two rod-shaped bodies 22 and 22 are integrally assembled and the vibration device 3 that vibrates the mold 1.

  The mold 1 is composed of front, rear, left and right (four) frame plates (1a to 1d) whose upper and lower surfaces are opened in use. The bottom plate of the mold 1 is shared by a base plate 32 of the vibration device 3 described later.

  The frame plates (1a to 1d) of the mold 1 constitute vertical side peripheral walls (four surfaces) during concrete molding. The height of each frame plate (1a to 1d) is the same as the longitudinal thickness of the retaining wall block 10 to be molded in this embodiment. Each of the frame plates (1a to 1d) can be assembled and disassembled. The front and rear frame plates 1a and 1b form the upper and lower surfaces of the molded retaining wall block 10 (FIG. 4), and the left and right frame plates 1c and 1d are molded retaining wall blocks. 10 left and right side surfaces are formed. Further, the front surface of the retaining wall block 10 is formed on the lower surface side of the mold 1 (the base plate 32 of the vibration device 3), and the rear surface of the retaining wall block 10 is formed on the upper surface of the mold 1.

  The frame 2 has two connecting members (in this embodiment, a rod-shaped body for forming a horizontal concave groove in a state in which five rod-shaped bodies 21, 21,. ) 22 and 22 are integrally connected. As shown in FIG. 4, the retaining wall block 10 manufactured in this embodiment has five vertical concave grooves 13, 13... And two upper and lower horizontal concave grooves 14, 14. Two connecting members (rod-like bodies) 22 and 22 are also used for forming a horizontal groove. In the following description, for the sake of convenience, the rod-shaped body 21 for forming the vertical groove is sometimes simply referred to as a vertical rod-shaped body, and the rod-shaped body 22 for forming the horizontal groove is simply referred to as a horizontal rod-shaped body.

  The frame 2 is formed of a material having a large specific gravity such as iron. In particular, in the manufacturing method of the first embodiment shown in FIGS. 1 to 3, as will be described later, the vertical bar 21 and the horizontal bar 22 of the frame 2 are submerged in the ready-mixed concrete 6 only by vibration. Therefore, a material having a specific gravity much larger than the specific gravity of the ready-mixed concrete 6 is used as the frame 2. Note that iron is the most suitable material with a large specific gravity and is inexpensive.

  Each of the vertical bar-like bodies 21, 21... And each of the horizontal bar-like bodies 22 and 22 has the same cross section as each of the cross-sectional shapes of the vertical groove 13 and the horizontal groove 14 to be formed on the back surface 12 of the retaining wall block 10. It has a shape (inverted trapezoidal shape). The vertical bar-like bodies 21, 21... And the horizontal bar-like bodies 22 and 22 are integrally continuous with the upper and lower surfaces being in the same plane.

  Each of the vertical bars 21, 21... Of the frame 2 has the same length as the distance between the inner surfaces of the front and rear frame plates 1 a and 1 b of the mold 1, while each horizontal bar of the frame 2 22 and 22 have the same length as the distance between the inner surfaces of the left and right frame plates 1c and 1d of the mold 1. The frame 2 in which the vertical bars 21, 21... And the horizontal bars 22, 22 are assembled is accommodated in the upper opening of the mold 1. The size is such that it can be accommodated between the opposing inner surfaces of 1 with almost no excess or deficiency.

  In the frame 2, the rods 21 and 22 are prevented from sinking further from the upper surface of a predetermined amount of the ready-mixed concrete 6 filled in the mold 1 at a position where the bar-like bodies 21 and 22 sink by the depth of the groove. A means for preventing settlement is provided. In this embodiment, as a means for preventing the settlement, a total of four pieces are provided on the upper surfaces of the end portions of the two horizontal bar-like bodies 22 and 22 so as to protrude outward from the left and right frame plates 1c and 1d of the mold 1, respectively. . Are fixed. The lower surface of each of the latching protrusions 23, 23,... Is at the same height as the upper surface of the frame 2, and when the frame 2 is accommodated in the upper opening of the mold 1, each of the latching protrusions .. Are placed on the upper surfaces of the left and right frame plates 1c and 1d, so that the assembled frame 2 does not sink any more (the state shown in FIGS. 2 and 3). Each of the latching protrusions 23, 23... Can be used as a handle for the frame 2.

  The vibration device 3 elastically supports the base plate 32 at the upper separation position of the base 31 with four telescopic support legs (with coil springs) 34, 34... And a vibration motor 33 on the lower surface of the base plate 32. Installed and configured.

  The formwork 1 is placed on the base plate 32, and the formwork 1 is fixed on the base plate 32 by an appropriate means. The base plate 32 shares the bottom plate of the mold 1 in the first embodiment.

  In the vibration device 3, when the vibration motor 33 is operated, the base plate 32 elastically supported on the base 31 vibrates at a high speed, and the mold placed on the base plate 32. 1 (and ready-mixed concrete 6 filled in the mold) can be vibrated. In addition, this type of mold vibration device has been generally used in the past when filling ready-mixed concrete in a mold with high density, and a manufacturer of a molded concrete product often has a normal facility. . Therefore, in order to carry out the manufacturing method of the first embodiment, there is little need to purchase a new form vibration device 3.

  The manufacturing method of the retaining wall block with a groove according to the first embodiment shown in FIGS. 1 to 3 is performed as follows using the above-described mold frame 1, the frame 2, and the vibration device 3.

  First, the mold 1 is assembled on the base plate 32 in such a posture that the upper surface side is opened. At this time, the mold 1 is fixed on the base plate 32 so as not to move. And the ready-mixed concrete 6 is filled to the upper end height (full position) in the mold 1 (state of FIG. 1). At this time, the upper surface of the ready-mixed concrete 6 filled in the mold 1 is roughened.

  Next, the frame 2 is placed on the upper surface of the ready-mixed concrete 6 filled in the mold 1. At this time, the frame 2 is aligned at a position where it can sink into the upper opening of the mold 1. Note that the frame 2 hardly sinks into the ready-mixed concrete 6 simply by placing the set-up 2 on the upper surface of the ready-mixed concrete 6.

  Then, when the vibration device 3 (vibration motor 33) is operated, the base plate 32 is vibrated at high speed by the vibration motor 33, and the upper mold frame 1 and the ready-mixed concrete 6 in the mold frame are vibrated at high speed. Then, the frame 2 placed on the upper surface of the ready-mixed concrete sinks into the upper surface portion of the ready-mixed concrete 6 by its own weight due to the vibration action of the ready-mixed concrete 6. At this time, since the ready-mixed concrete 6 is settled while being pushed away on the lower surface side of the vertical bar-shaped body 21 and the horizontal bar-shaped body 22, no air pool is generated in the bar-shaped body contact portion on the upper surface of the ready-mixed concrete. Can not be scratched). And when each rod-shaped body 21 and 22 sinks into the upper surface of the ready-mixed concrete 6 by predetermined depth (concave-groove formation depth), each latching protrusion rod 23,23 ... is the frame 1 (each left and right each The frame plates 1c and 1d) come into contact with the upper surface, and the settling of the frame 2 stops (state shown in FIGS. 2 and 3). Thereafter, the vibration motor 33 is stopped. At this time, if there is an excess or deficiency in the ready-mixed concrete 6 in the formwork 1, the excess ready-mixed concrete is deleted or replenished, while the portions of the ready-mixed concrete 6 other than the rod-shaped bodies 21 and 22 are removed. Keep the top surface clean.

  Then, the ready-mixed concrete 6 in the mold 1 is solidified, and after the concrete 6 is solidified, the assembled frame 2 is removed and the mold 1 is disassembled, so that the retaining wall block 10 with concave grooves shown in FIG. Can be manufactured. The frame 2 can be easily removed by grasping the left and right latching protrusions 23, 23,. Further, each of the frame plates 1a to 1d of the mold 1 may have a smooth inner surface and can be disassembled without any trouble.

  The grooved retaining wall block 10 (FIG. 4) manufactured in this way is constructed with a water permeable mat 9 that covers the back surface 12 as shown in FIGS. 5 and 6. That is, the rear surface 12 of the retaining wall block 10 is covered with the water permeable mat 9, and the retaining wall blocks 10, 10,... With the water permeable mat 9 are moved up and down with the concave groove forming surface (rear surface 12) facing the back side. -A retaining wall is constructed by assembling to the left and right, and the soil S is directly filled in the back surface of the retaining wall (the back surface of each permeable mat 9). The retaining wall blocks 10 and 10 stacked one above the other are assembled in a state in which the vertical concave grooves 13 and 13 are continuous in the vertical direction.

  In the retaining wall structure of FIGS. 5 and 6, the back surface of each retaining wall block 10, 10... The water permeable mats 9, 9... Are interposed therebetween, and when the water (penetrated water) in the soil S penetrates to the water permeable mat 9 portion, the water smoothly flows into the water permeable mat 9. A part of the water that has flowed into the water-permeable mat 9 enters the concave grooves (vertical concave grooves 13 and lateral concave grooves 14) on the back surface 12 of the retaining wall block 10, and each vertical concave and convex portion continues vertically. It quickly flows down through the grooves 13 and 13 and is discharged to the outside of the retaining wall through a drain pipe (not shown) penetrating the retaining wall, a water conduit 17 provided on the inner surface side lower portion of the retaining wall, and the like. Accordingly, in the retaining wall using the retaining wall block 10 with concave grooves and the water permeable mat 9, a crushed stone layer for water guidance (reference numeral 62 in FIG. 13) is not required on the rear surface side of the retaining wall.

  In the manufacturing method of the retaining wall block with a recessed groove of the second embodiment shown in FIG. 7, in addition to the mold 1, the assembly 2 and the vibration device 3 used in the first embodiment, the upper surface of the assembly 2. The pressing device 4 that pushes down the lower side is used. In addition, since the formwork 1, the assembly frame 2, and the vibration apparatus 3 are the same as the thing of 1st Example, those description uses the thing of 1st Example.

  The pressing device 4 is configured by interposing hydraulic cylinders (two in the illustrated example) 43, 43 between a mounting base 41 placed on the frame 2 and a fixed base 42 fixed above it. And this press apparatus 4 can push down the mounting base 41 by extending | stretching the hydraulic cylinders 43 and 43 below.

  In the manufacturing method shown in FIG. 7, as in the first embodiment, the mold 1 is assembled on the base plate 32 of the vibration device 3, and the ready-mixed concrete 6 is filled in the mold 1 until it is full. The frame 2 is placed on the ready-mixed concrete, the platform 41 of the pressing device 4 is mounted on the framework 2, and the hydraulic cylinders 43, 43 are positioned on the upper surface of the platform 41 and set. Then, the vibration motor 33 of the vibration device 3 is operated to vibrate the base plate 32, the mold 1 and the ready-mixed concrete 6 at high speed, and the hydraulic cylinders 43 and 43 of the pressing device 4 are extended to generate the assembled frame 2. Press down on the inside of the upper surface of the concrete 6. The settling of the frame 2 stops when the respective latching protrusions 23 and 23 come into contact with the upper surface of the mold 1, and then the operations of the vibration motor 33 and the hydraulic cylinders 43 and 43 are stopped.

  As described above, when the vibration by the vibration device 3 and the pressing by the pressing device 4 are simultaneously performed, the frame can be surely submerged in the upper surface of the ready-mixed concrete 6 in a short time. In addition, in the case where the frame 2 is forcibly pushed down by the pressing device 4 as described above, even if a solid kneaded material is used as the ready-mixed concrete 6, the set-up frame 2 is allowed to settle in the upper surface of the ready-mixed concrete without any trouble. be able to.

  In the case of this second embodiment, if the ready-mixed concrete 6 in the mold 1 is then solidified, the pressing device 4 is removed, the frame 2 is removed upward, and the mold 1 is disassembled, The manufacturing of the retaining wall block 10 (FIG. 4) is completed.

  In the manufacturing method of the third embodiment shown in FIGS. 8 and 9, the vibrating frame 5 applies vibration to the frame 2 so that the frame 2 sinks from the upper surface of the ready-mixed concrete 6. In the third embodiment, the mold 1 is assembled on the base 7 that does not move. Note that the mold 1 and the frame 2 are the same as those in the first embodiment.

  The vibration device 5 used in the third embodiment shown in FIGS. 8 and 9 includes a platform 51 placed on the upper surface of the frame 2 and a vibration motor 52 attached to the upper surface of the platform 51. Has been.

  In the manufacturing method of the third embodiment, the mold 1 is assembled on the base 7, the ready-mixed concrete 6 is filled in the mold 1 to a full state, the frame 2 is placed on the upper surface of the ready-mixed concrete 6, Furthermore, the vibration device 5 (the platform 51 with the vibration motor 52) is set on the assembly frame 2. Then, when the vibration motor 52 of the vibration device 5 is operated, the vibration is transmitted to the frame 2 via the mounting base 51 to vibrate the frame 2. At this time, the weights of the platform 51 and the vibration motor 52 are added to the frame 2, and the frame 2 (each vertical bar 21 and each horizontal bar 22) is moved to the upper surface of the ready-mixed concrete 6 by the load and vibration. Sink into the club. In this case as well, the settling of the frame 2 stops when the latching protrusions 23, 23 of the frame 2 come into contact with the upper surface of the mold 1, and then the vibration motor 52 is stopped.

  Also in the case of the third embodiment, after that, the ready-mixed concrete 6 in the mold 1 is solidified, the vibration device 5 is removed, the frame 2 is removed upward, and the mold 1 is disassembled. The manufacturing of the retaining wall block 10 (FIG. 4) is completed.

  FIG. 10 shows a modification of the frame 2 used in the first to third embodiments. The assembly frame 2 in FIG. 10 has five vertical bar bodies 21, 21,... And two horizontal bar bodies 22, 22 assembled on the same plane as in the first to third embodiments. However, in the frame 2 of the third embodiment, the lower bar sides of the vertical bar bodies 21, 21... And the horizontal bar bodies 22 and 22 are formed in a semicircular cross section. Thus, when the lower surface side of each rod-like body 21, 22 is semicircular in cross section, when removing the frame 2 after the ready-mixed concrete is solidified, it becomes easier to peel from the cross-section inverted trapezoidal shape of each of the above embodiments, Chipping near the opening of each of the formed concave grooves 13 and 14 is further less likely to occur.

  The manufacturing method of the fourth embodiment shown in FIG. 11 is for manufacturing the flat concrete pavement board 10A shown in FIG. 12, and is basically the same as the first embodiment shown in FIGS. In addition, the frame 2 is submerged into the upper surface of the ready-mixed concrete 6 only by the vibration of the vibration device 3.

  The concrete paving board 10A shown in FIG. 12 is the same as the concrete paving board 10A of FIG. 17 described in the section of the prior art, and the block body 11A has a square shape with a side of about 30 cm and a thickness of 3 cm. Is formed. On the back surface 12A of the block main body 11A, three concave grooves 13A and 14A are formed at equal intervals in the vertical and horizontal directions. Each of the vertical and horizontal concave grooves 13A and 14A has a trapezoidal cross section with a width of 5 to 10 mm and a depth of about 5 to 10 mm. The vertical and horizontal concave grooves 13A and 14A are the same as the vertical concave grooves 13A and 13A of the adjacent pavement boards 10A and 10A or the horizontal concave grooves 14A and 14A in the pavement board construction state (for example, FIG. 18). Each is continuous.

  The mold 1 has a size corresponding to the pavement plate 10A to be molded, a square having a side of about 30 cm and a depth of 3 cm.

  The frame 2 has three vertical and horizontal rod-shaped bodies (vertical bar-shaped bodies 21, 21, 21, and horizontal bar-shaped bodies 22, 22, and 22) equally spaced so that the vertical and horizontal concave grooves 13A and 14A can be formed. Are assembled in a lattice shape, and further, latching projections 23, 23,... That are also used as handles are attached to the upper surfaces of the end portions of the horizontal bar-like bodies 22, 22 located outside.

  In the manufacturing method of the fourth embodiment shown in FIG. 11, the mold 1 is assembled on the base plate 32 of the vibration device 3, the ready-mixed concrete 6 is filled in the mold 1, and the ready-mixed concrete 6 is assembled on the ready-made concrete 6. 2 is operated, the vibration motor 33 of the vibration device 3 is operated, so that the vertical and horizontal rod-like bodies 21 and 22 of the frame 2 are submerged into the upper surface of the ready-mixed concrete 6 by a predetermined depth. After solidifying, the frame 2 is removed and the mold 1 is disassembled, whereby the concrete pavement plate 10A shown in FIG. 12 is manufactured.

  The concrete pavement board 10A shown in FIG. 12 is used for sidewalk pavement as shown in FIGS. 18 and 19 described in the section of the prior art, and has a good drainage function due to the concave grooves 13A and 14A on the lower surface of the pavement board. Can provide structure.

  In addition to the fourth embodiment of FIG. 11, as a method of manufacturing the concrete pavement board 10A, the method of the second embodiment shown in FIG. 7 (using the vibration device 3 and the pressing device 4), FIG. The method of the third embodiment shown in FIG. 9 (where the frame 2 is directly vibrated by the vibration device 5) can also be employed. Also, the concrete paving board 10A to be manufactured can be manufactured in various sizes, thicknesses and shapes depending on the application, and the size and number of the concave grooves 13A and 14A on the back surface 12A of the block body are appropriately changed. it can.

It is a perspective view of the apparatus which performs the manufacturing method of this-application 1st Example in the case of manufacturing the block for retaining walls. It is a state change figure from FIG. 1 (sinking state figure of a framework). It is II-II sectional drawing of FIG. It is a perspective view of the block for retaining walls manufactured with the manufacturing method of FIGS. 1-3, and the water-permeable mat used for it. It is a longitudinal cross-sectional view of the retaining wall structure using the block for retaining walls with a concave groove of FIG. 4, and a water-permeable mat. It is VI-VI arrow line view of FIG. It is a longitudinal cross-sectional view of the apparatuses which perform the manufacturing method of this-application 2nd Example in the case of manufacturing the block for retaining walls. It is a perspective view of the apparatus which performs the manufacturing method of this-application 3rd Example in the case of manufacturing the block for retaining walls. It is the IX-IX cross section equivalent figure of FIG. It is a perspective view of the frame used in the other Example of this application in the case of manufacturing the block for retaining walls. It is a perspective view of the apparatus which performs the manufacturing method of this-application 4th Example in the case of manufacturing a concrete pavement board. It is an upper perspective view of the concrete pavement board manufactured with the manufacturing method of FIG. It is the schematic of the retaining wall structure using the conventional knowledge block. FIG. 3 is a perspective view of a retaining wall block and a water permeable mat according to an application already filed by the present applicant. It is the schematic of the retaining wall structure using the block for retaining walls and the water-permeable mat of FIG. It is a perspective view of the pavement structure using the conventional concrete pavement board. It is a downward perspective view of the concrete pavement board concerning the existing application of the present applicant. It is a top view of the pavement structure using the concrete pavement board of FIG. It is XIX-XIX expanded sectional drawing of the pavement structure of FIG.

Explanation of symbols

  1 is a formwork, 2 is an assembly frame, 3 is a vibration device, 4 is a pressing device, 5 is a vibration device, 6 is ready-mixed concrete, 9 is a permeable mat, 10 is a retaining wall block, 10A is a concrete paving plate, 12 is The back surface, 12A is the back surface, 13 and 13A are vertical concave grooves, 14 and 14A are horizontal concave grooves, 21 is a vertical bar-shaped body, 22 is a horizontal bar-shaped body, and 23 is a latching protrusion.

Claims (3)

Recessed concrete block (10, 10A) in which water guide grooves (13, 14, 13A, 14A) are formed on the back surface (12) or back surface (12A) of a block body (11, 11A) made of a concrete molded product. ) Manufacturing method,
A formwork for concrete molding (1) having an open top surface, a formwork (2) in which a plurality of rod-like bodies (21, 22) for forming concave grooves are integrally assembled at intervals, and a formwork (1) Using a vibration device (3) that vibrates
Fill the ready-mixed concrete (6) to a predetermined height in the formwork (1) installed with the upper surface open, and place the formwork (2) on the upper surface of the ready-mixed concrete (6) ( 1) is vibrated by the vibration device (3), and the rod-like bodies (21, 22) of the frame (2) are submerged into the upper surface portion of the ready-mixed concrete (6) by the depth of the groove (13), After (6) solidifies, remove the frame (2) and dismantle the mold (1).
A method for producing a concrete block with a concave groove.   In Claim 1, the pressing device (4) that presses the frame (2) from above is used, and the frame (2) is pressed from above by the pressing device (4) during operation of the vibration device (3). A method for producing a concrete block with a concave groove, characterized in that: A concrete block with concave grooves in which concave grooves (13, 14, 13A, 14A) for water guides directed in the vertical direction are formed on the back surface (12) or back surface (12A) of the block main body (11, 11A) made of a concrete molded product. (10, 10A) manufacturing method,
Formwork for concrete molding (1) having an open upper surface, a frame (2) in which a plurality of rod-shaped bodies (21, 22) for forming concave grooves are integrally assembled at intervals, and a frame (2) Using a vibration device (4) that vibrates
Fill the ready-mixed concrete (6) up to a predetermined height in the formwork (1) installed with the upper surface open, and place the assembled frame (2) on the upper surface of the ready-mixed concrete (6) ( 2) is vibrated by the vibration device (5), and the rod-like body (21, 22) of the frame (2) is submerged into the upper surface portion of the ready-mixed concrete (6) by the depth of the concave groove (13). After (6) solidifies, remove the frame (2) and dismantle the mold (1).
A method for producing a concave-concrete concrete block.

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