JP7313707B2 - Formwork material for concrete block molding, formwork set for concrete block molding, and method for molding concrete block - Google Patents

Description

The present invention relates to a concrete block forming form member for forming a concrete block, a concrete block forming form set, and a concrete block forming method.

Generally, when molding a concrete block, molding is performed using a wooden or metal formwork. For example, when constructing a foundation for anchoring posts such as guardrails and protective fences at a construction site, the ground where the posts are to be erected is excavated, forms and posts are arranged, and concrete is poured into the forms. Once the concrete has hardened and the concrete block (foundation) has been formed, the formwork is removed and the area around the foundation is backfilled with earth and sand.

Then, it has been proposed that the formwork is made of corrugated cardboard (specifically, corrugated board that can be decomposed by microorganisms) to form a buried formwork (see, for example, Patent Document 1). This buried formwork can be decomposed in the ground and returned to the soil, and can be buried in the soil without being removed from the foundation after molding. As a result, labor for construction work can be saved.

Japanese Utility Model Laid-Open No. 49-74721

However, in the corrugated paper formwork described in the above patent document, when a large amount of concrete is placed in the formwork, the formwork may easily bend or break, and the formwork may lose its shape, making it difficult to put to practical use. In addition, since the formwork is lightweight, it tends to shift from the construction position and becomes unstable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to provide a concrete block forming form material that is stable and does not easily lose its shape even when a large amount of concrete is poured therein, a concrete block forming form set, and a concrete block forming method using this concrete block forming form material.

DISCLOSURE OF THE INVENTION The present invention has been proposed in order to achieve the above objects, and according to claim 1, it is made of a plate-like material having a microbiologically destructible property, and has a wall surface serving as a body of a cylindrical body having an open top surface and a bottom surface. The concrete block forming form member is characterized in that a bent portion is provided with a hole through which the temporary fixing member is passed.

According to claim 2 , the plate-like material is corrugated cardboard .

According to claim 3 , the mold material for concrete block molding according to claim 1 or claim 2 ,
a temporary fixing material for temporarily fixing the concrete block forming form material by attaching it to the receiving part and inserting the lower end into the ground;
It is a formwork set for concrete block molding characterized by consisting of.

According to a fourth aspect of the present invention , there is provided a concrete block molding method using a concrete block forming form member which is made of a plate-like material having a microbiologically destructible property, has a wall surface serving as a trunk of a cylindrical body having an open upper surface and a lower surface, and is provided with a receiving portion at a portion of the wall surface serving as the outer side of the cylindrical body,
a temporary fixing step of temporarily fixing the concrete block forming form member at a predetermined position by attaching a temporary fixing member to the receiving portion of the concrete block forming form member at the site;
an installation material temporary fixing step of erecting an installation material to be fixed by a concrete block so as to penetrate the upper surface of the concrete block molding form material and temporarily fixing the installation material to the concrete block molding form material and/or temporary fixing material via a support material;
a concrete pouring step of pouring concrete into the concrete block molding formwork;
A temporary fixing material removing step of removing the supporting material and the temporary fixing material while leaving the concrete block molding formwork in a state where the installation material can stand on its own.

According to claim 5 , after the concrete pouring step, a backfilling step is included in which the surroundings of the concrete block forming formwork are left in place and filled with sand or the like.

ADVANTAGE OF THE INVENTION According to this invention, there exists the following outstanding effects.
According to the inventions of claim 1, claim 3 , and claim 4 , the concrete block forming form member is configured by comprising a plate-shaped material having a microbiologically destructible property, and having a wall surface serving as a body of a cylindrical body having an open top surface and a bottom surface. As a result, it is possible to construct a form member for molding a concrete block that does not easily lose its shape even when a large amount of concrete is poured into it. In addition, the wall surface can be temporarily fixed to a mounting place such as the ground via the temporary fixing material, and the concrete block molding formwork can be easily stabilized.

Further, according to the invention of claim 1 , the wall surface portion has an extension part extending to the upper surface side and/or the lower surface side, and the extension part is bent to the outside of the cylindrical body to be the receiving part. Since a hole for passing the temporary fixing material is formed in the bent part, it is not necessary to prepare the receiving part for the temporary fixing material separately from the cylindrical body and attach it to the cylindrical body. Therefore, it is possible to improve the manufacturing efficiency of the concrete block forming form member and reduce the manufacturing cost.

According to the second aspect of the present invention , since the plate material is corrugated paper, it is possible to reduce the weight of the concrete block forming form material and facilitate handling.

According to the fifth aspect of the present invention , after the concrete pouring step, a backfilling step is included in which the surroundings of the concrete block molding materials are filled with earth and sand while the concrete block molding materials remain. Therefore, it is possible to save the trouble of removing the concrete block molding materials, and improve the efficiency of the installation work of the installation materials.

1 is a perspective view of a form member for concrete block molding; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the state before the formwork material for concrete block molding is closed cylindrically, (a) is a front view, (b) is a bottom view. It is explanatory drawing of the molding procedure of the concrete block using the formwork material for concrete block molding. This is a modification of the form member for concrete block molding in which the receiving portion is composed of an endless belt. This is a modification of the form member for concrete block molding, in which the receiving portion is composed of the bent portion of the cylindrical body. It is a modified example of the support material, (a) to (d) is a support material composed of a combination of strip-shaped flat plates, and (e) to (h) is a support material composed of a combination of flat cylinders. It is explanatory drawing which shows the use condition of the modification of a support material, (a) is the perspective view seen from the upper direction, (b) is the perspective view seen from the downward direction. It is explanatory drawing of the modification which formed the dent in the end of a support material.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated based on drawing.
As shown in FIG. 1, the concrete block forming form member 1 is a form member having a cylindrical body 2 (in this embodiment, a cylindrical body 2 having a rectangular cross section) whose upper and lower surfaces are open. Each receiving portion 4 is provided with a hole 5 penetrating in the vertical direction, and a temporary fixing material 6 composed of a long bar such as a reinforcing bar (a bar longer than the vertical length of the cylindrical body 2) can be inserted from the upper surface side to the lower surface side of the cylindrical body 2, and the lower part of the temporary fixing material 6 can be pierced into the ground to temporarily fix (position) the concrete block molding form material 1 to the ground.

The cylindrical body 2 is formed by bending a plate-shaped material having microbiologically destructible properties. Specifically, as shown in FIG. 2, a rectangular plate material 10 is cut out from a paper material such as corrugated paper or thick paper, and a plurality of (four in FIG. 2) folding ruled lines (folding grooves) having a V-shaped cross section are formed in parallel with each other by heat ruled line processing to separate the wall surface portion 3 that will be the body of the cylindrical body 2 and the overlapping margin 12. 12 is superimposed on the other end to form a tubular shape (in FIG. 2, a rectangular tubular shape open at the top and bottom). In addition, the inner and outer surfaces of the cylindrical body 2 are waterproofed by spraying a waterproof coating agent, etc., so as to avoid the inconvenience that water immediately penetrates into the material (inside the paper) of the cylindrical body 2, specifically, the inconvenience that the cylindrical body 2 immediately absorbs water and softens when pouring concrete.

As a means for closing the plate-like material 10 in a cylindrical shape, the ends of the plate-like material 10 may be locked together using a metal fitting (such as a stapler), an adhesive, or an adhesive, or a locking piece formed at one end may be locked into a locking hole opened at the other end (none of which is shown). Also, in the present embodiment, the place where both ends of the plate member 10 are overlapped is located at the corner of the tubular body 2, but it may be located on the side surface of the tubular body 2 shifted from the corner. The point is that the tubular member 2 can be configured by closing the plate member 10 into a tubular shape.

The receiving part 4 provided on the outside of the cylinder 2 is composed of a loop-shaped material formed by bending a horizontally oriented strip of paper (a strip of cardboard, cardboard, or the like), and both ends of the receiving part 10 are attached to the outer part of the cylinder 2 (outside the wall surface part 3) to form a hole 5 with the cylinder 2. Then, a plurality (three in this embodiment) are arranged side by side along the vertical direction (in other words, the penetration direction of the hole 5) on each wall surface portion 3 of the cylindrical body 2, and one temporary fixing material 6 is configured to be able to pass through each hole 5 of the plurality of aligned receiving portions. As a means for attaching the receiving portion 4 to the cylindrical body 2, both ends of the receiving portion 4 may be fixed to the cylindrical body 2 using a metal fitting (such as a stapler), an adhesive, or an adhesive may be used.

Next, the concrete block molding method using the concrete block molding formwork 1 will be described by exemplifying the molding of the concrete block to which the installation material 15 is fixed, specifically, the construction work of the foundation block B for fixing the support for the protective fence as the installation material 15 to the ground in an upright state. When carrying the concrete block molding material 1 to the construction site, as shown in FIG. If it is kept in a folded state, it becomes easier to handle the lightweight paper-made formwork 1 for concrete block molding, and workers can easily prepare for construction, which is preferable. In addition, the ground where the installation material (post) 15 is to be fixed is excavated to form a recessed hole wider than the size of the concrete block molding formwork 1, and crushed stone is laid at the bottom of the excavated place to form a crushed stone layer S (see FIG. 3(c)).

First, the concrete block molding form 1 in a folded state (see FIG. 3(a)) is expanded into a cylindrical shape, and the concrete block molding form 1 is set in a posture in which both upper and lower sides are open (see FIG. 3(b)), and in this state, the concrete block molding form 1 is placed on the crushed stone layer S (see FIG. 3(c)). Then, the temporary fixing material 6 is inserted from above into the row of the receiving parts 4 (row of holes 5) arranged vertically on each wall surface part 3 of the cylindrical body 2, and the upper end of the temporary fixing material 6 is hit with a hammer or the like to pierce the lower end of the temporary fixing material 6 to the crushed stone layer S and the ground below it (see FIG. 3(d)). As a result, the formwork material 1 for concrete block molding is temporarily fixed at a predetermined position where the foundation block B is planned to be constructed (formwork temporary fixing step). In addition, the upper part of the temporary fixing member 6 is kept in a state of extending upward from the upper edge of the concrete block forming form member 1 .

After the concrete block molding formwork 1 is temporarily fixed, an installation material 15 is erected at a portion of the crushed stone layer S facing the concrete block molding formwork 1 to penetrate the upper surface of the concrete block molding formwork 1 (see FIG. 3(e)). Furthermore, a support material 16 such as a wire or a rope is hung between the installation material 15 and the upper part of each temporary fixing material 6 to support the installation material 15 and stabilize the standing state of the installation material 15 (see FIG. 3(f)). In other words, the installation material 15 is temporarily fixed to the temporary fixing material 6 via the support material 16 (installation material temporary fixing step).

After temporarily fixing the concrete block molding material 1 and the installation material 15, as shown in FIG. After the concrete is poured into the concrete block molding formwork 1, the periphery of the concrete block molding formwork 1 (the gap between the concrete block molding formwork 1 and the recessed hole in the ground) is backfilled with earth and sand while the concrete block molding formwork 1 remains at the construction site (backfilling process). Here, since the formwork material 1 for concrete block molding is made of a plate-like material (paper material) that is microbiologically destroyed, it decomposes in the ground and returns to the soil after backfilling. Therefore, it is possible to save the trouble of removing the concrete block molding formwork 1, and to improve the efficiency of the construction work. Moreover, even if the formwork material 1 for concrete block molding is left in the ground as a buried formwork (residual formwork), there is no adverse effect on the natural environment.

Further, when the concrete hardens and the setting material 15 becomes able to stand on its own (in other words, when curing progresses to some extent and the concrete sufficiently supports the erected posture of the setting material 15), the supporting material 16 connecting the setting material 15 and the temporary fixing material 6 is removed (see FIG. 3(h)), and the temporary fixing material 6 is pulled out from the receiving portion 4 (temporary fixing material removing step) to complete the construction work of the foundation block B (concrete block molding work).

In this way, if the foundation block (concrete block) B is molded using the concrete block molding formwork 1 and the temporary fixing material 6, the wall surface 3 can be reinforced from the outside with the temporary fixing material 6. As a result, even if a large amount of concrete is poured into the concrete block forming form member 1, the shape is unlikely to collapse. In addition, the wall surface portion 3 can be temporarily fixed to a mounting place such as the ground via the temporary fixing material 6, and the concrete block molding formwork 1 can be easily stabilized. Furthermore, since the formwork material 1 for concrete block molding is not heavy, it is easy to handle, and construction preparations (delivery to construction site, installation, etc.) can be performed smoothly. Since the temporary fixing material 6 and the supporting material 16 that have been removed can be reused, it is possible to reduce the cost and arrangements for the preparation of materials necessary for the next construction work.

In the installation material temporary fixing step of temporarily fixing the installation material 15, the installation material 15 is temporarily fixed by connecting it to the temporary fixing material 6 via the support material 16, but the installation material 15 may be temporarily fixed by adding the support material 16 to the concrete block molding formwork 1 (for example, the upper edge of the wall surface part 3). Further, when the concrete block molding formwork 1 is sufficiently sturdy and has strength to withstand the support of the installation material 15, the installation material 15 may not be temporarily fixed to the temporary fixing material 6, but may be temporarily fixed to the concrete block molding formwork 1 via the support material 16 instead.

Furthermore, when the setting material is not erected at the stage of molding the concrete block (for example, when fixing the setting material such as a support post on the hardened foundation block with an anchor bolt), the support material 16 does not need to be locked to the temporary fixing material 6 when concrete is poured. Therefore, if the periphery of the concrete block molding formwork 1 is sufficiently supported by earth and sand after the above-described backfilling process, the work of pulling out the temporary fixing material 6 can be carried out in advance without waiting for the concrete to harden. Therefore, the working time for molding the concrete block can be further shortened.

By the way, in the above-described embodiment, the strip-shaped piece of paper is attached to the wall surface portion 3 to form the receiving portion 4, but the present invention is not limited to this. For example, a rectangular tube-shaped or cylindrical paper tube may be used as a receiving part and fixed to the wall surface, and the through space in the paper tube may be used as a hole to pass the temporary fixing material. Further, in the concrete block forming form member 1' of the modified example shown in FIG. Specifically, through holes 22 are formed at a plurality of locations along the circumferential direction of the cylindrical body 2, and an endless belt 20 (for example, an endless belt 20 made of paper) that is microbiologically destroyed is passed through the through holes 22 and woven alternately on the front side and the back side of the wall surface portion 3, along the entire circumference of the cylindrical body 2. A portion of the endless belt 20 protruding to the front side of the wall surface portion 3 (side of the cylindrical body 2) functions as a receiving portion 21, and the temporary fixing material 6 is configured to pass through a hole (gap) 23 formed between the receiving portion 21 and the wall surface portion 3.

When such an endless belt 20 is applied as a receiving part 21 to a form member 1' for molding a concrete block, the endless belt 20 functions as a structure for attaching the temporary fixing material 6, and also functions as a structure for suppressing deformation of the cylindrical body 2. - 特許庁By tightening the endless belt 20, the tightness of the cylindrical body 2 can be adjusted. Thus, by adjusting the tightness of the cylindrical body 2 according to the planned pouring amount of concrete, the problem of large deformation of the cylindrical body 2 due to the pressure received from the concrete can be suppressed, and a good concrete block can be molded.

Moreover, in the modification shown in FIG. 5, portions extending from the cylindrical body 2 to the upper surface side and the lower surface side function as receiving portions. Specifically, the extension portions 24 (upper extension portion 24a and lower extension portion 24b) are extended from the upper edge portion and the lower edge portion of each wall surface portion 3 of the cylindrical body 2, the upper extension portion 24a is bent outward to form a receiving portion 25 having a rectangular cross section (upper receiving portion 25a), and the lower extending portion 24b is bent outward to form a flat plate-like receiving portion 25 (lower receiving portion 25b). A hole 26 is formed in each receiving portion 25, and the upper and lower holes 26 are aligned in the same straight line so that a single temporary fixing material 6 can be inserted. By forming the receiving portion 25 by bending the extension portion 24 in this way, it is not necessary to prepare the receiving portion 25 separately from the cylindrical body 2 and attach it to the cylindrical body 2 . Therefore, it is possible to improve the manufacturing efficiency of the concrete block forming form member 1 and reduce the manufacturing cost.

In the modified example, the upper and lower extended portions 24 are respectively bent to form the receiving portions 25, but the present invention is not limited to this. In short, as long as the concrete block molding formwork 1 can be temporarily fixed (positioned) to a mounting place such as the ground through the temporary fixing material in the receiving portion, the extending portion 24 may be provided on either the upper surface side or the lower surface side of the wall surface portion 3 and the receiving portion 25 may be configured.

By the way, in the explanation of the construction procedure of the foundation block B described above, a wire or a rope was mentioned as an example of the support material 16 that connects the installation material 15 and the temporary fixing material 6, but the present invention is not limited to this example of the support material. In short, as long as the installation material can be supported and stabilized, the support material may have any configuration. For example, the two types of support members 30 shown in FIG. 6 are both metal members (metal fittings), and are configured such that the inner plate member 31 can be slid within the outer plate member 32 to adjust the total length of the support member 30. Specifically, one end of the strip-shaped inner plate member 31 projecting outward from the outer plate member 32 is provided with an engagement hole 33 for engaging the temporary fixing material 6, and the other end covered with the outer plate member 32 is provided with a stopper 34 composed of a bolt and a nut. An elongated hole 35 extending along the sliding direction of the inner plate member 31 is formed in the outer plate member 32, a stopper 34 is slidably engaged with the elongated hole 35, and the bolt and nut of the stopper 34 are tightened to restrict the sliding of the inner plate member 31.

Of the two types of support members 30, a support member 30A shown in FIGS. 6(a) to 6(d) has an inner plate member 31 and an outer plate member 32 each formed of a strip-shaped flat plate, and the inner plate member 31 is loosely fitted in a recess formed on one surface of the outer plate member 32 so as to be slidable. 6(e) to (h), the support member 30B includes both the inner plate member 31 and the outer plate member 32 formed of flat strip-shaped cylindrical members, and the inner plate member 31 is inserted into the inner space (inside the cylinder) of the outer plate member 32 so as to be slidable.

In order to support the installation material 15 using the supporting members 30, as shown in FIG. 7, first, the temporarily fixing member 6 temporarily fixing the concrete block molding form member 1 (in other words, the lower end of the temporary fixing member 6 that is self-supporting by sticking into the ground) is hooked to the upper end of the temporary fixing member 6, and the temporary fixing member 6 and the supporting member 30 are engaged with each other. At this time, the support member 30 may be brought into contact with the upper edge of the wall surface portion 3 of the concrete block molding form member 1 for stability. Alternatively, the support member 30 may be provided with a contact portion above the engagement hole 33, and the support member may be stabilized by contacting the upper end portion of the temporary fixing member 6 with this contact portion. In the support member 30 shown in FIG. 7, the contact portion 36 extends from the end portion of the inner plate member 31 to cover the engagement hole 33 from above, and the upper end portion of the temporary fixing member 6 passes through the engagement hole 33 and hits the contact portion 36 from below, thereby stabilizing the support member 30.

After the support member 30 is engaged with the temporary fixing member 6, the stopper 34 is loosened to allow the inner plate member 31 and the outer plate member 32 to slide. Then, the outer plate member 32 is slid with respect to the inner plate member 31 to approach the installation member 15 in an upright state, and when the end of the outer plate member 32 contacts the side surface of the installation member 15, the stopper 34 is tightened to position the outer plate member 32. Then, the temporary fixing material 6 supports the installation material 15 via the supporting material 30 . The supporting members 30 attached in this manner are attached to the respective temporary fixing members 6 and brought into contact with the installation member 15 from the side, thereby stabilizing the standing state of the installation member 15 . Furthermore, when concrete is poured (concrete pouring process described above), even if the installation material 15 receives pressure from the momentum of the poured concrete, the posture (upright state) of the installation material 15 can be sufficiently maintained.

Since the supporting member 30 having such a sliding function can be adjusted in its entire length, the supporting member 30 can be expanded and contracted according to site adjustment and brought into sufficient contact with the installation member 15, and the stability of the installation member 15 during construction can be enhanced. Further, even if the distance between the installation material 15 and the temporary fixing material 6 is different for each mounting place of the support material 30, the total length can be set according to each distance, and there is no need to separately prepare a plurality of kinds of support materials.

It should be noted that the support member 30 may be devised so that the installation member 15 can be supported in a more stable state. For example, in the support member 30′ of the modified example shown in FIG. 8, a depression (support engaging portion) 37 is formed at the end portion of the outer plate member 32 with which the installation member 15 abuts, and is set in a state (specifically, a gently curved state) along the (outer peripheral surface) of the installation member 15. If the installation material 15 is supported using the support material 30' having such recesses 37, the installation material 15 in an upright state can be sufficiently supported, and the stability of the installation material 15 can be further enhanced.

By the way, in the above-described embodiment, the form member 1 for concrete block molding is configured by including the tubular body 2 in the shape of a square tube, but the present invention is not limited to this. The cylindrical body of the concrete block forming form member 1 may be set in any shape, such as a triangular cylinder or a cylinder, depending on the concrete block to be formed, as long as it functions as the main body of the form into which concrete is poured. In addition, although a paper material such as corrugated paper is mentioned as an example of the material of the concrete block molding form material 1, the present invention is not limited to this. In short, any material other than paper may be used as long as it is a plate-like material having a characteristic of being destroyed microbiologically. For example, a biodegradable plastic plate material may be used to form a concrete block forming form.

Although it has been shown that the cylindrical concrete block molding material 1 is flatly folded and made thin when it is carried into the construction site, it may be carried in an even thinner form. Specifically, as shown in FIG. 2, the formwork 1 for concrete block molding may not be closed in a cylindrical shape, but may be brought into the construction site in a flat plate shape in which the wall portions 3 are aligned and connected, and the formwork 1 for concrete block molding may be closed from the flat plate shape to the cylindrical shape at the construction site. In addition, a formwork set for concrete block molding may be configured by attaching the temporary fixing material 6 to the receiving part 4 of the concrete block molding formwork 1 in advance before carrying it into the construction site, and this set may be carried into the construction site.

Furthermore, in the above-described embodiment, it is explained that the concrete block molding formwork 1 is used as a buried formwork (residual formwork) to be buried in the ground together with the molded concrete block (foundation block B), but the present invention is not limited to this. For example, the concrete block molding material of the present invention may be used to manufacture precast concrete blocks (concrete blocks that are pre-molded in a factory or the like and then carried out) or to construct foundation blocks that are not buried in the ground, and the concrete block molding materials may be removed after molding. It should be noted that if the formwork material for concrete block molding is made of paper, it is preferable because it can be easily removed by tearing or cutting.

Further, in the above-described embodiment, a bar (round bar) such as a reinforcing bar is used as the temporary fixing member 6, but the present invention is not limited to this. In short, any shape of temporary fixing member may be adopted as long as it can engage with the receiving portion to temporarily fix the concrete block molding form member to the placement place and furthermore can restrict the deformation of the cylindrical body. For example, a pipe material, a long wooden square material, or a flat bar material may be used. Moreover, although the support members 30, 30' are used to support the installation member 15 from all sides, the present invention is not limited to this. The point is that the number of supporting members used does not matter as long as the stability of the installation member 15 can be sufficiently ensured by the supporting members.

Moreover, the above-described embodiments should be considered as examples in all respects and not restrictive. The present invention is defined not only by the above description but also by the scope of the claims, and includes all modifications within the scope and meaning equivalent to the scope of the claims.

1, 1' Concrete block forming form member 2 Cylindrical body 3 Wall surface portion 4 Receiving portion 5 Hole 6 Temporary fixing material 10 Plate material 11 Folding ruled line 12 Overlap margin 15 Installation member 16 Supporting member 20 Endless belt 21 Receiving portion 22 Through hole 23 Hole 24 Extension portion 24a Upper extension portion 24b Lower extension portion 25 Reception portion 25a Upper side Receiving portion 25b Lower receiving portion 26 Holes 30, 30A, 30B, 30' Support member 31 Inner plate member 32 Outer plate member 33 Engagement hole 34 Stopper 35 Long hole 36 Contact portion 37 Recess B Foundation block S Crushed stone layer

Claims (5)

It is made of a plate-shaped material that is microbiologically destroyed, and has a wall surface portion that is the body of a cylindrical body with an upper and lower surface that is open, and a receiving portion for attaching a temporary fixing material to a portion of the wall surface that is the outside of the cylindrical body .
A form member for concrete block molding, wherein the wall surface portion has an extension portion extending to the upper surface side and/or the lower surface side, the extension portion is bent to the outside of the cylindrical body to be the receiving portion, and the bent portion is provided with a hole through which the temporary fixing material is passed. 2. The concrete block forming form material according to claim 1, wherein the plate-like material is corrugated board . The concrete block forming form material according to claim 1 or claim 2,
a temporary fixing material for temporarily fixing the concrete block forming form material by attaching it to the receiving part and inserting the lower end into the ground;
A formwork set for concrete block molding, characterized by comprising: A concrete block molding method using a concrete block forming form member made of a plate-shaped material having a microbiologically destructible property, having a wall surface serving as a body of a cylindrical body with open top and bottom surfaces, and having a receiving portion on the outer side of the cylindrical body of the wall surface,
a temporary fixing step of temporarily fixing the concrete block forming form member at a predetermined position by attaching a temporary fixing member to the receiving portion of the concrete block forming form member at the site;
an installation material temporary fixing step of erecting an installation material to be fixed by a concrete block so as to penetrate the upper surface of the concrete block molding form material and temporarily fixing the installation material to the concrete block molding form material and/or temporary fixing material via a support material;
a concrete pouring step of pouring concrete into the concrete block molding formwork;
and a temporary fixing material removing step of removing the supporting material and the temporary fixing material while leaving the concrete block molding formwork in a state where the installation material can stand on its own. A concrete block molding method. 5. The concrete block molding method according to claim 4, further comprising, after the concrete pouring step, a backfilling step of filling back the surroundings of the concrete block molding formwork with sand or the like while leaving the concrete block molding material.

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