JPH10315217A - Production of concrete block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely and easily produce concrete blocks each having a number of holes. SOLUTION: A number of pillar-like bodies 33 are disposed erectably in a form 28 which each has an external shape that is formed into a pillar-like shape in correspondence with the shape of a through hole 12 and which can be deformed thinly when each body is released from the form, ready-mixed concrete 40 is filled into the form 28 and cured therein, the pillar-like bodies 33 are deformed in such a manner that their external shape becomes thin, and the cured concrete 40 is then released from the form.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a concrete block having a large number of holes by molding.

[0002]

2. Description of the Related Art Conventionally, concrete blocks in which only holes are formed have been widely manufactured and generally used as constituents of various buildings. The holes formed in the concrete block are usually used as insertion holes for inserting reinforcing steel bars when stacking, or as decorative through-holes, and only one or several holes are formed in one block. there were.

[0003]

However, a concrete block having a large number of holes has not been manufactured conventionally. The cause is considered to be that it was difficult to release the hardened concrete from the mold without destroying the hardened concrete, and the manufacturing was difficult in the conventional manufacturing method that involves simply removing the upper and lower molds. On the other hand, it is possible to taper the mold to make it easier to pull out, but in the case of concrete molding, it is difficult to sufficiently improve the releasability even with a considerably large taper due to its characteristics. there were. Particularly, it was difficult to form a deep hole.
Furthermore, it was more difficult to reduce the thickness of the partition wall between the holes to form a large number of holes at a high density. By the way, if a large number of holes can be suitably formed in a concrete block, it is possible to reduce the weight while maintaining the strength, and it is considered that the use thereof is very wide, for example, the space of the holes can be suitably used as a fluid passage. Can be

Accordingly, an object of the present invention is to provide a method for manufacturing a concrete block capable of reliably and easily manufacturing a concrete block having a large number of holes.

[0005]

The present inventor has the following arrangement to achieve the above object. That is, the present invention provides a concrete block manufacturing method for manufacturing a concrete block having a large number of holes by molding, wherein the outer shape is formed in a columnar shape corresponding to the shape of the holes,
When releasing the mold, a large number of deformable columnar bodies are thinned out in a form, arranged in a mold, filled with ready-mixed concrete in the form, and hardened. The method is characterized in that the concrete is deformed so as to be thinner and the hardened concrete is released from the columnar body.

If the height of the columnar body is set higher than the thickness of the concrete block to be manufactured,
The plurality of holes can be suitably formed in the through holes.
Further, if the columnar body is formed so that the horizontal cross-sectional shape is the same in a predetermined vertical section corresponding to the depth of the hole, the plurality of holes can be formed in parallel with each other. it can.

Further, the columnar body is composed of a hollow member constituting an outer shell portion and a filling material filled inside the hollow member, and a predetermined columnar shape is formed in a state where the hollow member is filled with the filling material. When the hardened concrete is released from the column, the filler is removed from the interior of the hollow member, whereby the column including the hollow member as a component is suitably released and released. Can type. In addition, since the filler is a granular material such as sand, the columnar body can be suitably formed with simple manufacturing equipment, and the manufacturing cost can be reduced.

Further, the hollow member has one end opened and the other end closed, and a flange for mounting to the mold is formed at the one end, so that the columnar body can be manufactured at low cost. And a suitable concrete block manufacturing mold can be efficiently formed. Therefore,
As a result, the productivity of the concrete block according to the present application can be improved. Further, the hollow member is contracted and deformed by suctioning the inside of the hollow member by a vacuum device, and the hardened concrete is released from the hollow member. Production efficiency can be improved.

In addition, before the hollow member is filled with the filler, a cylindrical shape retaining member having higher rigidity than the hollow member is fitted to the hollow member, and the filler is filled inside the hollow member. When filled, the outer shape of the columnar body is held in a predetermined shape along the inner wall of the cylindrical shape retaining member under the pressure of the filler, and is filled at least in the mold. Before the hardened concrete is hardened, the cylindrical shape retaining member is pulled out and removed from the inside of the formwork, whereby a hole having a cross section other than a circle, such as a hole having a square cross section, can be suitably manufactured.

The hollow member has one end opened and the other end closed, and the inside of the hollow member filled with the filler is prevented by a vacuum device while preventing the filler from leaking. By holding the outer shape of the columnar body in a predetermined shape by suction, the tubular shape retaining member can be easily and suitably pulled out.

Further, the concrete blocks are connected to each other or to another connecting member through the through holes of the concrete block formed by the method for manufacturing a concrete block according to claim 2 to form a three-dimensional structure. By forming a concrete block, a desired structural form can be easily obtained.

Further, an adhesive is applied to the inner wall surface of the through hole of the concrete block formed by the method for manufacturing a concrete block according to the above-mentioned claim 2, and the granular material is applied to the through hole to which the adhesive is applied. By filling, by holding the particulate matter in the through-hole, concrete blocks having various desired functions can be easily and suitably manufactured.

The above-mentioned claims 1, 2, 3, 4,
The concrete block having a large number of holes formed by the method for producing a concrete block according to 5, 6, 7, 8 or 9 is placed on a layered ready-mixed concrete having a predetermined thickness in a formwork, By curing the ready-mixed concrete and removing the mold, a lid that closes at least one of the plurality of holes is formed in the concrete block, so that a very strong and light concrete block can be easily and appropriately formed. Can be manufactured.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will be described below in detail with reference to the drawings. First, the form of a concrete block according to the present invention will be described with reference to FIGS. FIG. 1 shows a cylindrical through hole 12.
It is a perspective view of the concrete block 10 in which many were formed. The through holes 12 are formed so as to penetrate in the thickness direction of the concrete block 10, and are provided in large numbers at regular intervals. FIG. 2 shows a concrete block 20 having a honeycomb structure in which a large number of hexagonal column-shaped through holes 22 are formed.
It is a perspective view of. The partition wall forming the honeycomb structure is formed so as to have a constant and thin thickness, and the through holes 22 are arranged in a staggered manner, so that the arrangement density can be suitably increased.

(First Embodiment) Next, a concrete block 10 having a large number of holes (through holes 12) according to the present invention.
A first embodiment of a method for manufacturing a concrete block for manufacturing a concrete block will be described with reference to FIG. FIG. 3 is a cross-sectional view schematically showing the manufacturing steps in the order of steps. First, FIG.
As shown in (a), a base material 32 having a large number of through-holes 32a is placed on an inverted side mold 30 and the two are connected (clamp 31) to each other. The hollow member 34 is inserted and arranged. Hollow member 3
In No. 4, a rear end side 34a which is one end is opened, and a front end side 34b which is the other end is closed. A flange 34c is formed on the rear end side 34a so as to prevent the base form member 32 constituting the formwork 28 from dropping into the formwork 28 and to be able to be suitably inserted to a predetermined depth. That is,
By simply inserting the hollow member 34 into the through hole 32a from the distal end side, the hollow member 34 can be easily arranged at a predetermined position.

The hollow member 34 is provided in the formwork 28 in the form of a column corresponding to the shape of the through-hole 12, and has a columnar body having elasticity that can be deformed so as to be thin when the mold is released. 33 of the outer shell. The hollow member 34 may be made of an elastic soft resin material or the like. For example, soft PVC can be used. In addition,
It may be formed using a rubber material. Further, the hollow member 34
Is very small compared to the entire size of the mold frame 28 and can be easily molded by a resin molding machine, so that it can be obtained at low cost.

Then, as shown in FIG. 3B, the interior 35 of the hollow member 34 is filled with sand 36 as a filler. In such a state that the sand 36 is filled in the hollow member 34, the pillar 33 has a predetermined column shape. That is, in the present embodiment, the columnar body 33 is composed of the hollow member 34 and the sand 36 filling the inside 35. Sand 3
6 is filled with a cover base plate 38 as shown in FIG.
1 to prevent the sand 36 from coming out. The hollow member 34 has a flange 34 c formed of the base member 32.
It is in a state of being sandwiched and fixed between the cover base plate 38 and the cover.

Next, the formwork 28 formed as described above and having a large number of columnar bodies 33 arranged in a standing state is prepared.
Turn over as shown in FIG. Then, as shown in the figure, the raw concrete 40 is filled in the formwork 28 to a predetermined depth. If necessary, apply natural vibrations to the raw concrete 4
0 is preferably distributed within the formwork 28 to satisfy the desired specifications, such as density. Further, steam curing or the like is appropriately performed to harden the ready-mixed concrete filled in the formwork 28. The ready-mixed concrete according to the present invention is a mixture of cement, water, sand and / or gravel, and does not limit the size of the grains of sand and gravel. It is a concept that includes things. In addition, it is needless to say that a reinforcing bar can be inserted in order to improve the structural strength of the concrete block.

Next, as shown in FIG. 3D, the cover base plate 38 is removed, and the sand 36 is removed. Then, the hardened concrete 40 is released from the hollow member 34 forming the columnar body 33. At this time, as shown in FIG. 3 (e), the concrete 40 hardened from the hollow member 34 can be suitably released by deforming the hollow member 34 so that the outer shape becomes thin. Since the sand in the interior 35 of the hollow member 34 has been removed, the hollow member 34 can be easily deformed, and the hollow member 34 can be suitably peeled off from the hardened concrete 40 by the deformation. Thus, the hardened concrete 40 can be suitably released (removed) from the hollow member 34. The hollow member 3
By sucking the inside 35 of 4 by the vacuum device 42,
It is also possible to shrink and deform the hollow member 34 and release the hardened concrete 40 from the hollow member 34.
According to this, demolding can be performed reliably and quickly,
Production efficiency can be improved.

As described above, the mold is released from the hollow member 34, and the side frame 30 and the base mold 32 are removed as shown by arrows in FIG. 3 (e), and through holes are formed as shown in FIG. 3 (f). 12
Is completed, and the concrete block 10 in which many are formed is completed. In the present embodiment, the height of the columnar body 33 is set to be higher than the thickness of the concrete block 10 to be manufactured, whereby the large number of holes are suitably formed in the through holes 12. In addition, as shown in the figure, the height of the columnar body 33 (hollow member 34) is set to be longer than the thickness of the concrete block 10 by a predetermined amount or more, that is, the tip side 34b that is not in contact with the hardened concrete 40 is By being long, the hollow member 34 can be easily contracted and deformed. Therefore, the releasability can be improved.

In this embodiment, the pillar 33 is
It is formed so as to have the same horizontal cross-sectional shape in a predetermined vertical section corresponding to the depth of the through hole 12 and at least the depth. Specifically, when the columnar through hole 12 as shown in FIG. 1 is formed, the columnar body 33 is also formed in a columnar shape. By using such a columnar body 33, a large number of columnar through holes 12 can be formed in parallel with each other. Further, each columnar body 33 is not formed with a taper for normal die cutting, but the hollow member 3 as described above is used.
By the operation of 4, the die can be suitably removed. Further, since no taper for forming a die is formed, a large number of through holes 1 are formed.
2 can increase the arrangement density.

In this embodiment, the case where sand is used as the filling material has been described. However, the present invention is not limited to this, and a granular material such as a metal having the same effect may be used. As described above, if the granular material is used as the filler, it is possible to suitably cope with various sizes, and it is possible to appropriately reuse the filler. Further, the filler is not limited to a granular material, and a material that can be handled as a fluid, such as a fluid such as water or air, can be used. In the case of a fluid such as water, air, or the like, the columnar body 33 can be suitably formed by airtightly or watertightly sealing the container at a predetermined pressure. Also, the hollow member 34 can be reused any number of times until it is worn out. In particular, since the hollow member 34 is formed for each piece, it can be replaced for each required piece. For this reason, the columnar body 33 can be suitably formed with simple manufacturing equipment, and as a result, the manufacturing cost of the concrete block can be reduced. Further, in the embodiment, the case where a large number of through holes 12 are formed has been described. However, the present invention is not limited to this, and can be suitably applied to the case where a large number of bottom holes are formed.

(Second Embodiment) FIG. 4 is a sectional view schematically illustrating a second embodiment of the method for manufacturing a concrete block according to the present invention. The difference from the first embodiment is that first, the columnar body 50 is formed in a tapered shape, and the hollow member 52 constituting the outer shell is formed in a tapered shape. Further, the filling material to be filled in the hollow member 52 is not a granular material, but a metal mold or the like, in which the protrusion 54 a is formed.
4. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Thus, the columnar body 50
Although the configuration is different, a concrete block 58 having a large number of tapered through holes 56 can be suitably manufactured by substantially the same manufacturing process as in the first embodiment. Hollow member 52
Is formed of a flexible resin material.
Since it is possible to suitably perform the mold release as in the embodiment, and since the release property is further improved by the action of the taper,
It is possible to further improve productivity. Further, since the filling is not a granular material, but a projection 54 in which a large number of projections 54a are provided integrally, it is easy to handle and the productivity can be improved.

(Third Embodiment) FIG. 5 is a cross-sectional view schematically illustrating a third embodiment of the method for manufacturing a concrete block according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. The first and second embodiments are different from the first and second embodiments in that the hollow member 62 forming the columnar body 60 is
The difference is that the resin pipe is formed by cutting a predetermined length. The hollow member 62 has a shape in which both ends are opened, and the above-described flange is not formed on the rear end side. For this reason, the rear end side 62a is sandwiched between the inner surface of the through hole 64a of the base mold member 64 and the press-fitted ring member 66, so that the hollow member 62 is fixed to stand in the mold. The inside of each hollow member 62 is filled with sand 36, which is an example of a filling material, so that the sand 36 does not spill.
The opening on the distal end side 62 b of the is closed by a lid 68. The ready-mixed concrete is supplied from the gap between the lids 68 into the formwork as indicated by the arrow in the figure. Even if the mold is formed in this way, if the hollow member 62 is formed of a flexible resin member, as in the first and second embodiments,
Since the releasability can be improved, the concrete block 10 having the through holes 12 can be suitably manufactured.

(Fourth Embodiment) Next, another embodiment will be described with reference to FIGS. FIG. 6 is an explanatory view showing an operation process, and FIG. 7 is a cross-sectional view showing a state where the columnar body 33 externally fitted by the cylindrical shape retaining member 43 is horizontally cut. The fourth embodiment is different from the above-described embodiment in that a cylindrical shape-preserving member 43 is interposed in particular, and a cross-section is formed as a square hole. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. The tubular shape retaining member 43 is formed of a member having higher rigidity than the hollow member 34. For example, it is formed of a metal and is formed in a thin cylindrical shape as shown in FIG. 7, but is made of a material that is much harder than the hollow member 34 formed of a resin material. As the metal, a normal steel material is sufficient, and a lightweight steel material (corner pipe) having a square cross section can be cut into a predetermined length for use. Further, they may be separated as shown in the figure, but if they are connected to each other at intervals so as to correspond to the positions of the plurality of pillars 33 in the forest, it is possible to handle them appropriately. Can be improved.

The cylindrical shape retaining member 43 is fitted to the hollow member 34 before the filling (for example, sand 36) is filled in the interior 35 of the hollow member 34. The hollow member 34 is a flexible member for improving the releasability as described above, and the cylindrical shape retaining member 43 can be easily fitted outside. Then, when the sand 36 is filled in the interior 35 of the hollow member 34, the cylindrical shape retaining member 43 receives the filling pressure of the sand 36 via the thin film of the hollow member 34, as shown in FIG. Then, the outer shape of the columnar body 33 (that is, the outer shape of the hollow member 34) is held in a predetermined shape along the inner wall 43a of the cylindrical shape retaining member 43.

Next, as shown on the right side of FIG. 6, at least before the raw concrete 40 filled in the mold 28 is hardened, the tubular shape retaining member 43 is pulled out and removed from the mold 28. By using the cylindrical shape retaining member 43 in this way,
A hole having a cross section other than a circle, such as a hole having a square cross section, can be suitably manufactured. This is because the hollow member 34 is a highly flexible member, and when the filler such as the sand 36 is packed, the outer periphery of the hollow member 34 is deformed in a swelling direction. This is because the phenomenon can be prevented. For example, even if the cross section of the hollow member 34 is formed in a square shape, if the pressure inside the hollow member 34 increases, the cross section will eventually become circular. Therefore,
When a hole having a circular cross section is formed, the cylindrical shape retaining member 43 as in the present embodiment is not required, but is required when forming a polygonal hole such as a square. Since the tubular shape retaining member 43 is pulled out before the concrete 40 hardens, the concrete 40 is filled in the mold 28 in a state of being in contact with the outer peripheral surface of the hollow member 34 due to its fluidity. Accordingly, a hole having a desired shape is eventually formed by the columnar body 33.

In the fourth embodiment, the hollow member 34 is
The rear end side 34a which is one end is opened, and the front end side 34b which is the other end is closed. 44 is a vacuum pump and 45 is a decompression chamber. The decompression chamber 45 communicates with the insides 35 of the plurality of hollow members 34 and is sealed with a film 46. A filter 47 is provided in the suction passage of the vacuum pump 44 so that the sand 36 is not sucked and discharged by the vacuum device (vacuum pump 44).

According to the decompression means configured as described above,
The inside 36 of the hollow member 34 filled with the sand 36 and the decompression chamber 45 can be sucked by the vacuum pump 44 while preventing the sand 36 as the filling material from leaking out.
The outer shape of the columnar body 33 can be held in a predetermined shape. That is, the inside 35 of the hollow member 34 is filled with sand 36 and the pressure is reduced, so that the core-shaped columnar body 33 can be maintained in a desired solidified shape. In the present embodiment, the hollow member 34, which is a soft tube, is placed in a cylindrical shape retaining member 43, which is a hard square tube, and the pressure is reduced. A tube is made.

Further, even if the hollow member 34 is filled with the sand 36, the outer shape of the hollow member 34 (ie, the outer shape of the columnar body 33) is slightly reduced by the suction force of the vacuum pump 44. Therefore, the tubular shape retaining member 43 can be easily pulled out. When the outer shape of the columnar body 33 is completely maintained by the decompression as described above, the raw concrete 40
May be put into the formwork 28. According to this, the cylindrical shape retaining member 43 does not touch the raw concrete 40, does not require cleaning, and can improve the working efficiency. Further, the suction by the vacuum pump 44 may be released after the raw concrete 40 is put into the formwork 28 and before the concrete 40 is hardened. Fluid concrete 40
Pressure acts to maintain the outer shape of the columnar body 33, and the suction time by the vacuum pump 44 can be reduced.
Work efficiency can be improved.

FIG. 7 shows a state in which the hollow member 34 comes into contact with the inner wall surface 43a of the cylindrical shape retaining member 43. The inner corner portion 43b of the cylindrical shape retaining member 43 is formed at an acute angle, but the hollow member 34 follows the inner wall surface 43a due to its own flexibility, and the corner portion is naturally naturally rounded. Thereby, a suitable radius can be formed at each corner of the square hole formed in the concrete block, and a shape in which concentrated stress is not easily applied can be obtained.
Further, when a large number of square holes are formed as in this embodiment,
The holes can be arranged neatly. For this reason, there is an advantage that the aperture ratio can be increased and the reinforcing bar can be suitably reinforced because the structure is easy to insert a reinforcing bar.

(Fifth Embodiment) Next, a fifth embodiment will be described with reference to FIG.
An example will be described. This embodiment has a simplified configuration of the fourth embodiment. As compared with the first embodiment, the point that the cylindrical shape retaining member 43 is used and the point that the distal end side of the hollow member 48 is open are different. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. This fifth
According to this embodiment, as in the fourth embodiment, the hollow member 48 is also provided.
Before the inside of the hollow member 48 is filled with the sand 36, the cylindrical shape retaining member 43 is externally fitted to the hollow member 48, and the inside of the hollow member 48 is filled with the sand 36.
Is filled with the sand 36, the outer shape of the columnar body 49 is held in a predetermined shape along the inner wall 43a of the cylindrical shape retaining member 43 under the pressure of the sand 36, and the raw concrete 40 is
Immediately after filling the inside of the mold 8, the tubular shape retaining member 43 is pulled out and removed from the mold 28, so that a hole having a square cross section,
A hole having a cross section other than a circle can be suitably manufactured. The sand 36 may be filled into the hollow member 48 to a predetermined density by its own weight or pressing force so as to balance the pressure of the raw concrete 40 to be filled. According to this manufacturing method, a concrete block having a large number of holes can be easily formed with a simple mold configuration.

Next, the application and applied technology of the concrete block formed as described above will be described in detail with reference to FIGS. FIG. 9 shows a concrete block 10 formed by the manufacturing method described above.
It is sectional drawing which shows the state which connected mutually. A pipe 70 is inserted between the two concrete blocks 10 and 10, and bolts 71 are inserted into the pipe 70 and the respective through holes 12 and 12.
Are inserted and fixed with a nut 72 so that the two concrete blocks 10, 10 are stacked in parallel at a predetermined interval. By using the through holes of the concrete block 10, a desired three-dimensional structure can be easily formed. The connecting member is not limited to the bolt and nut, but may be a wire, a resin rope, a string, or the like. The structure shown in FIG. 9 can be suitably used, for example, as a fishing reef by sinking in the sea.

FIG. 10 is a cross-sectional view illustrating a structure in which a part of the through hole of the concrete block 10A is formed as a tapered hole 73 and the tapered hole 73 is used to connect to another connecting member 74. Anchor 75 from connecting member 74
The concrete block 10A and the connecting member 74 are connected by inserting the tip 75a of the anchor 75 into the tapered hole 73 and filling the tapered hole 73 with an adhesive filler 73a such as concrete. . By connecting in this way, it is possible to suitably manufacture a middle block in which a surface portion having a large number of holes is formed.

FIG. 11 shows an assembly type knowledge block 91 which can be easily assembled on site. A nut 92 is fixed to the side of the concrete block 10 by an adhesive means 92a such as concrete. On the other hand, the bolt 93 is fixed to the side of the retaining portion 94 which is a connecting member. By screwing the bolt 93 into the nut 92, assembly can be easily performed on site, and transport is easy.

FIG. 12 is a cross-sectional view when the concrete block 10B according to the present invention is used as a clue block. The concrete blocks 10B are arranged on the surface, and the retaining portion 76 is formed of a durable metal material (for example, stainless steel or a steel material whose surface is subjected to corrosion prevention treatment). FIG. 13 shows a case where a concrete block 10 using the concrete blocks 10, 10A, and 10B formed in FIGS. 10 to 12 is used for a slope of a river, and the concrete block 10 is placed on the river bottom by applying the connection structure of FIG. It is a cross section of the river showing the arrangement state. Environment-friendly slopes and riverbeds can be suitably formed.

FIG. 14 shows a concrete block 10 according to the present invention in which a through hole 12 is filled with a functional substance 77 and both sides are covered with a net 78. The net may be bonded with an adhesive (for example, epoxy). The functional substance 77 includes, for example, charcoal particles whose surface is covered with a porous ceramic (hereinafter, referred to as “ceramic charcoal”). Ceramic charcoal is produced by mixing organic particles and an inorganic binder consisting of fine particles via moisture, and baking to carbonize the organic particles whose surfaces are coated in a thin film with an inorganic binder. Is done. Since it is covered with the inorganic binder, the inside becomes a carbonized part and the surface layer becomes a ceramic coating layer. The ceramic coating layer is in a state where countless holes are opened. This ceramic charcoal has water supply,
It is excellent in adsorptivity and has a bactericidal effect.
If the block formed like 4 is submerged in water,
There is a remarkable water quality improvement effect.

FIG. 15 is a sectional view showing a state in which the concrete block 10 according to the present invention is used as a member for forming a ground surface or a slope. The soil 79 is filled in the through-hole 12, and the soil 79 is open to the ground, so that water can flow. According to this, the ground surface, the slope, and the like can be reinforced by the concrete block 10 so as to be able to be maintained at a desired plane, and the plants can be propagated on the surface. Therefore, if the concrete block 10 according to the present invention is used, it is possible to prepare an artificial environment for prevention of disaster, convenience, and the like, and at the same time, it is possible to naturally improve the scenery.

FIG. 16 shows a state in which a functional material is packed in a net bag 80 and is hung from a through hole 12 of a concrete block 10 supported and arranged at a predetermined height in water by a rod 81 as a support member. It is sectional drawing. By using in this manner, purification of water can be easily realized. The portion of the concrete block 10 protruding from the through hole 12 becomes an island in the river, and grass grows to become a grass island. The grass islands further promote water purification. In addition, 8
1a is a concrete support rod.

FIG. 17 shows that the adhesive 82 is applied to the inner wall surface of the through hole 12 of the concrete block 10 according to the present invention, and the granular material 8 is applied to the through hole 12 to which the adhesive 82 is applied.
3 is a cross-sectional view showing a state in which a granular material 83 is held in a through-hole 12 by filling 3. In addition, this through hole 12
Is filled before the adhesive is cured in the case of a normal adhesive, but is not limited to this when the adhesive is generated by post-processing. As the adhesive 82, cement, epoxy, or the like can be used.

As the granules, those having a predetermined function, for example, the above-mentioned ceramic charcoal, inorganic porous granules, and granules of a predetermined mineral can be used. By the choice of such granules,
Concrete blocks suitable for growing plants and aqueous plants (including seaweeds) can be obtained. By the way, if a highly water-absorbing material such as an inorganic porous granular material is held in the hole (through hole 12) as in the present embodiment, the material is in contact with the inner wall surface and is adhered to the adhesive by 82. Although the porous function of the portion is lost, the one held in the middle portion of the through hole 12 without contacting the adhesive 82 is preferably held in the through hole 12 and fully exerts its function. it can.

FIG. 18 shows a concrete block 10 having a large number of holes formed by the method of manufacturing a concrete block according to the present invention, as shown in FIG.
Ready-mixed concrete 8 filled into a layer of a predetermined thickness in 4
The concrete block 10 is placed on the concrete block 5, and the raw concrete 85 is hardened and released from the mold, so that the concrete block 10 has at least one of a large number of holes (through holes 12) (both in this embodiment).
7 shows a concrete block 88 in which lids 86 are formed to close the opening of FIG. When the cover 86 is formed, the concrete is solidified while slightly entering the inside of the through hole 12 as shown in the figure, so that the bonding strength can be improved. By forming the lid portion 86 in this manner, a concrete block 88 having extremely high strength and lightness can be formed.
In addition, as shown in the figure, it is a matter of course that a reinforcing bar 89 or a lath net 90 can be inserted into the lid 86 for reinforcing concrete. Further, the reinforcing bars 89 (see FIG. 18) or the lath net 90 are connected to the concrete blocks 10, 20 of the present invention.
Of course, it can be reinforced by putting it in the partition wall forming the hole.

As shown in FIG. 18, the through-holes 12 have the above-mentioned granular material 95 such as ceramic charcoal, pulverized charcoal, granular charcoal, and rice husk.
Can be filled (enclosed). The encapsulation method may be simple packing, or may be mixed with an adhesive and packed. Note that concrete can be used as the adhesive. By mixing the adhesive, the particles 95
Can be prevented from floating. In addition, a concrete block having desired properties can be obtained by mixing with the granular material, and the structural strength can be improved by increasing the amount of the adhesive. In addition, since charcoal has a property of blocking electromagnetic waves, it can be used as a lightweight concrete wall that can suitably block electromagnetic waves when the above-mentioned granular material is sealed in the through hole 12.

Further, the concrete block according to the present invention can be suitably used as a soundproof wall. As shown in the embodiment of FIG. 18, a material having a sound absorbing effect may be enclosed,
As shown in FIG. 20, the inner wall 96a of a large number of holes 96, one of which is formed by the above-described manufacturing method, is opened.
By attaching a granular material 97 having a sound absorbing effect to this, an excellent sound absorbing effect can be obtained. As the durable granular material having a sound absorbing effect, a ceramic ball formed of ceramic in a ball shape, so-called perlite, or the like can be used.

In the above embodiment, the columnar body is provided with the two components of the hollow member and the filler. However, the present invention is not limited to this. It may be a single piece made of a very elastic material. This also makes it possible to improve the releasability from concrete, so that the mold can be suitably removed and a concrete block having a large number of holes can be reliably and easily manufactured. As described above, the present invention has been described variously with reference to preferred embodiments. However, the present invention is not limited to the embodiments, and it is needless to say that many modifications can be made without departing from the spirit of the invention. That is.

[0046]

According to the method for manufacturing a concrete block according to the present invention, the outer shape is formed in a column shape corresponding to the shape of the hole, and the outer shape can be deformed so as to be thin when the mold is released. Since a concrete block is manufactured by a mold in which a large number of pillars are provided in a formwork in a formwork, the releasability when hardened concrete is released from the pillars can be significantly improved. Therefore, according to the present invention, a concrete block having a large number of holes formed in a mold can be suitably removed from the mold, and a concrete block having the large number of holes can be reliably and easily manufactured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a concrete block according to the present invention.

FIG. 2 is a perspective view showing a honeycomb-shaped concrete block according to the present invention.

FIG. 3 is a process diagram showing a method for manufacturing a concrete block according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram illustrating a second embodiment according to the present invention.

FIG. 5 is an explanatory diagram illustrating a third embodiment according to the present invention.

FIG. 6 is an explanatory diagram illustrating a fourth embodiment according to the present invention.

FIG. 7 is a sectional view illustrating a columnar body according to a fourth embodiment.

FIG. 8 is an explanatory diagram illustrating a fifth embodiment according to the present invention.

FIG. 9 is a cross-sectional view illustrating a method for connecting concrete blocks according to the present invention.

FIG. 10 is a sectional view showing another method of connecting the concrete block according to the present invention.

FIG. 11 is a sectional view showing another method of connecting the concrete block according to the present invention.

FIG. 12 is a cross-sectional view showing a state applied to a clue block.

FIG. 13 is a cross-sectional view showing a state applied to a slope and a riverbed of a river.

FIG. 14 is a sectional view showing a state where a net is attached.

FIG. 15 is a cross-sectional view showing a state used on the ground surface.

FIG. 16 is a cross-sectional view showing a state in which it is disposed underwater.

FIG. 17 is a cross-sectional view showing a state in which a granular material is held in a through hole.

FIG. 18 is a cross-sectional view showing a state where lid portions are formed on both sides.

FIG. 19 is a cross-sectional view showing a manufacturing method for forming the lid.

FIG. 20 is a perspective view in which the concrete block according to the present invention is used for a soundproof wall.

[Explanation of symbols]

 10 Concrete Block 12 Through Hole 20 Concrete Block 22 Through Hole 28 Formwork 30 Side Formwork 32 Base Form 33 Columnar Body 34 Hollow Member 35 Inside 34c Flange 36 Sand 38 Cover Base Plate 40 Concrete 78 Net 82 Adhesive 83 Granular Material 86 Lid Department

Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04B 2/02 E04C 1/08 A 1/10 K

Claims (12)

[Claims] 1. A method for manufacturing a concrete block having a large number of holes by molding, wherein the outer shape is formed in a columnar shape corresponding to the shape of the hole, and the outer shape is formed when the mold is released. A large number of columnar bodies that can be deformed so as to become thinner are arranged in a form in a form, and the concrete is filled in the form and hardened, and the columnar body is deformed so that its outer shape becomes thinner. And releasing the hardened concrete from the columnar body. 2. The method for manufacturing a concrete block according to claim 1, wherein a height of the columnar body is higher than a thickness of the concrete block to be manufactured, and the plurality of holes are formed in through holes. . 3. The columnar body has the same horizontal cross-sectional shape in a predetermined vertical section corresponding to the depth of the hole, and the plurality of holes are formed parallel to each other. The method for producing a concrete block according to claim 1. 4. The columnar body is composed of a hollow member constituting an outer shell portion and a filler filled inside the hollow member, and forms a predetermined columnar shape in a state where the hollow member is filled with the filler. When releasing the hardened concrete from the columnar body,
The method according to claim 1, wherein the filler is removed from the inside of the hollow member. 5. The method for producing a concrete block according to claim 4, wherein the filler is a granular material such as sand. A manufacturing method for a reed block. 6. The hollow member according to claim 4, wherein one end of the hollow member is opened and the other end is closed, and the one end is formed with a flange to be mounted on the formwork. 6. The method for producing a concrete block according to 5. 7. The hardened concrete is released from the hollow member by shrinking and deforming the hollow member by sucking the inside of the hollow member by a vacuum device. A method for producing the concrete block according to the above. 8. Before the filler is filled in the hollow member, a tubular shape-retaining member having higher rigidity than the hollow member is fitted to the hollow member, and the filler is filled in the hollow member. When filled, the external shape of the columnar body is held in a predetermined shape along the inner wall of the cylindrical shape retaining member under the pressure of the filler, and at least the mold is filled in the formwork. The method for manufacturing a concrete block according to claim 4, wherein before the raw concrete hardens, the tubular shape retaining member is pulled out and removed from the inside of the formwork. 9. The hollow member is open at one end and closed at the other end. The inside of the hollow member filled with the filler is prevented by a vacuum device while preventing the filler from leaking out. The method for manufacturing a concrete block according to claim 8, wherein the external shape of the columnar body is held in a predetermined shape by suction. 10. The concrete blocks are connected to each other via the through holes of the concrete blocks formed by the concrete block manufacturing method according to claim 2.
Alternatively, a method for manufacturing a concrete block, comprising forming a three-dimensionally structured concrete block by connecting with another connecting member. 11. A concrete block formed by the method for manufacturing a concrete block according to claim 2, wherein an adhesive is applied to an inner wall surface of the through-hole, and a granular material is filled in the through-hole to which the adhesive is applied. A method of manufacturing a concrete block, wherein a granular material is held in the through hole. 12. The method of claim 1, 2, 3, 4, 5, 6, 7,
The concrete block having a large number of holes formed by the method for producing a concrete block according to 8 or 9 is placed on ready-mixed concrete filled in a layered form having a predetermined thickness in a formwork, and the ready-mixed concrete is cured. And removing the mold to form a lid for closing at least one of the plurality of holes in the concrete block.