JP2008196138A - Form member with mounting means, and concrete wall forming method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a form member with a mounting means, and a concrete wall forming method. <P>SOLUTION: The form member forms a form for a slab of a building, a concrete foundation or a concrete wall. The form member is composed of a synthetic resin foam which can also be left as a part of the foundation or the wall, etc. after the hardening of concrete poured into the form. Additionally, the form member includes the mounting means for an interior material or the like protruding through the foam to the outside on the opposite side to the inner surface of the form of the foam, from the inside of the foam. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a synthetic resin foam that is used as a formwork inside and outside concrete when forming an outer wall of a concrete building, and is left as it is inside and / or outside the concrete after the concrete wall is formed. The present invention relates to a combination of a member for formwork and an attaching means for attaching an outer wall material or a base material of the outer wall material provided through the member, or a surface mounting composite base material.

Generally, an outer wall material such as siding is fixed to a structural material such as timber or iron, concrete, or the like. In addition, the tile is attached on a mortar, or a tile having an insertion shape corresponding to the back is inserted and bonded to a base material having a rail shape. The mortar is sprayed or painted on a timber with a waterproof paper and a lath net.
On the other hand, a mold of a synthetic resin foam, which is a foam of polystyrene or the like, has recently been widely used because it is free to mold and lightweight, has heat insulation properties, and is easy to handle. In a concrete building, it is also known to leave the synthetic resin foam as it is on the surface of the concrete outer wall. It is also known that mortar is sprayed directly on a synthetic resin foam to give strength to the foam surface. Also, it is a synthetic resin foam having a resin mortar layer and a resin mortar layer mixed with resin for the purpose of firmly fixing the synthetic resin foam to the concrete. What penetrated the body layer is known.
Japanese Patent Laid-Open No. 10-121614 JP-A-10-121485

  If the building is a concrete outer wall, even if mortar or the like is sprayed or applied to the surface of the synthetic resin foam on the outside of the outer wall, it is vulnerable to external forces, and the foam and mortar are The problem is that the degree of shrinkage is different. Accordingly, it is necessary to spray or apply a refractory material or the like on the outside of the foam layer on the outer wall, or to attach a lath net, siding, tile, or the like for thickening the mortar.

On the other hand, support for means for attaching a lath net, siding, tile, etc. to the surface of the synthetic resin foam, or support for attachment means (for example, lath net) as an aid for spraying or painting refractory materials, etc. In the case of using a spacer penetrating the spacer, the supporting force is strong because it is solidified by concrete, but the supporting portion is limited to a portion where these spacers exist. Furthermore, relying much on the spacer limits the space for reinforcing bars, and requires attachment by anchors, thus extending the construction period.
Further, when the attachment means is directly installed on the synthetic resin foam, a large load is applied to the synthetic resin foam, and the accuracy of the formwork is deteriorated due to damage to the synthetic resin foam or insufficient strength.
Further, when the attachment means is inserted into the synthetic resin foam afterwards by attaching anchor bolts or the like, the process cannot be shortened and the cost cannot be reduced.

  As a result of intensive research, the inventor forms a slab of a building, a concrete foundation or a concrete wall inner surface of a concrete wall when connected, and after the concrete poured into the mold is solidified, To attach a synthetic resin foam that can be left as a part of the foundation or wall, and an outer wall material, interior material, etc., the foam penetrates through the foam from the inner surface of the foam to the opposite surface. Or a plate member for firmly fixing the attachment means to a mold member made of a synthetic resin foam, or a surface opposite to the inner surface side of the foam When using a formwork member characterized by having a surface-mounted composite base material at least partially embedded in the foam, a lath net for attaching mortar, siding, tiles, etc. The attachment means and completed the present invention can solve the above problems by being supported by a concrete wall through the foam (1, 2, see Figure 3).

  At that time, regarding the attaching means, the synthetic resin foam has a plate member at least partially embedded in the foam for holding the attaching means on the inner surface of the form of the synthetic resin foam, The foam is disposed through the foam from the inside to the outer surface, or the attachment means is disposed on the inner surface side of the mold so as to follow the inner surface of the mold member of the plate member at least partially embedded in the synthetic resin foam. The point that is attached, the attachment means is a sheet metal work, the point that has a projecting portion extending on the inner side of the formwork so that it is embedded and fixed in the concrete after the concrete wall is completed on one or one side of the attachment means, In order to obtain a plurality of fixing points of the outer wall material or the base material on one attachment means, one attachment means is mainly composed of the synthetic resin foam at a plurality of locations. By further consideration with a shape that is fixed by the concrete at a plurality of locations through the wood, the present invention exerts a more effective effect.

  As for the plate member, the point that the plate member is a flat plate, and the case where the plate member connects the sides of the plurality of formwork forming plates to form opposing concrete formwork walls. In order to keep the distance between the walls facing each other and / or to prevent the connection between the sides of the adjacent mold forming plate to be disconnected, the inner surface of the plate is exposed to the formwork. A member that is attached or embedded in the plate, and is a plate portion located inside the plate, a plate portion that is exposed on the surface of the plate, and a web portion that connects the midpoints of these plate portions And a protruding portion having a narrower width than the exposed plate portion provided on the surface opposite to the web portion of the plate portion exposed on the plate surface, the central axis being perpendicular to the long side of the plate A plurality of protrusions having a plurality of through holes in a direction; By further consideration a member for spacing holding provided the level position, the present invention exerts a more effective effect.

  Further, regarding the surface mounting composite base material, it may be further sandwiched by one end of the surface on the side opposite to the mold inner surface side of the mounting means, metal, plastic, wood or their recycled material, waste material And a rigid composite reinforcement made by molding a composite material such as foaming agent, ceramics, glass fiber, etc. The present invention exhibits a more effective effect by considering the fact that it is fixed and integrated vertically.

  In addition, the present invention forms a mold inner surface portion of a concrete wall-like body such as a building foundation or a wall when connected, and after the concrete poured into the mold is solidified, the concrete wall-like body In order to maintain and fix the gap between the synthetic resin foam or the main component thereof that remains as a part and the formwork facing the member, it is fixed or attached to the member to be embedded in the concrete as it is. In order to attach the outer wall material or its base material to the outer side of the mold, the separator is installed separately from the separator so as to extend from the inner side of the mold of the member to the outer side of the mold. It is also an invention relating to a member for a formwork including a combination with a mounting means for fixing, and an inner part of the formwork of the attaching means is fixed by solidification of concrete.

  Furthermore, the synthetic resin foam of the present invention may be provided with a space for piping, and the surfaces forming the mold of any one of the above-mentioned mold frame members are arranged facing each other so as to maintain a predetermined interval. A concrete foundation or a concrete wall manufacturing method capable of solving the above-described problems can be obtained by placing and solidifying concrete in a mold.

Synthetic resin foam members and their shapes Synthetic resin foams can be molded freely, are lightweight, can be easily handled, and have a certain degree of rigidity. Therefore, it is very suitable as a formwork material. In addition to the function as a mold, the synthetic resin foam has good heat insulation, and therefore can remain as a heat insulating material after the concrete in the mold is solidified.
Furthermore, the synthetic resin foam can have a space through which piping or the like is inserted, a vertical hole, or a hole penetrating the front and back surfaces of the synthetic resin foam in advance. The definition of a synthetic resin foam member includes a composite member of a synthetic resin foam in which a coating layer for reinforcing rigidity such as mortar is adhered to the surface.
Adjacent edges of the synthetic resin foam may have a shape having biting portions so as to be connected to each other, may have a shape that is simply stepped with each other, or may have a shape in which simple planes collide with each other. .

Attachment means In the present invention, the synthetic resin foam forming the inner surface of the mold has an attachment means attached so as to protrude from the inside of the foam or the outer surface on the opposite side from the inner surface of the mold.
The attachment means bent into the U-shape of the present invention is, for example, a sheet metal workpiece shown in FIG. 4, that is, a U-groove attachment, and one end of the attachment means includes a lath net, mortar, siding, tile, etc. Plastic or metal projecting parts having U-grooves, holes, L-shape, bolts, metal rods, screw holes, simple cylindrical holes, wire stopper holes, etc. for supporting It has become. In addition, as shown in FIG. 11, one end of the attachment means may be one in which, for example, a tip portion having a screw hole is bent and the surface thereof is coincident with the surface of the synthetic resin foam resin. Furthermore, the attachment means may be in any form other than these as long as it has a function of fixing the outer wall material or the base material.
The attachment means is formed and cast simultaneously in the synthetic resin foam, and further includes a plate member for firmly holding the attachment means on the synthetic resin foam.
By utilizing the plate member, the attachment means can be provided inside the synthetic resin foam as described in the plane sectional view of the member for formwork shown in FIG. As an example for that, there is a mold member in which the attaching means is engaged with the plate member inside the synthetic resin foam.
Thereby, compared with the case where the mounting member is mounted so as to protrude from the mold inner surface side of the foam to the surface on the opposite side, the effect of increasing the degree of freedom of the mounting position of the mounting member is exhibited. Can do.

And, the attaching means is disposed inside the synthetic resin foam, or penetrates the foam from the back surface of the foam to the surface opposite to the inner surface of the mold frame, for example, vertically, and is synthesized on the inner surface side of the mold frame. Since it is arranged so as to follow the inner surface of the formwork of the plate member that is at least partially embedded in the resin foam, a large load is applied to the synthetic resin foam even during work and after fixing with concrete. The installation means can be firmly installed without being applied.
In addition, it is embedded in the concrete after the concrete wall is completed on one or both sides of the attachment means, and extends toward the inside of the mold as shown in FIGS. A protruding portion may be provided. Further, when the protruding portion is provided and extended, the plate member can be omitted.
And one of the uses of attachment means is the attachment of outer wall materials and interior materials, and another use is to use to fix timber and pipes for aligning and fixing the formwork to the foam. However, the attachment means can be used for any other purpose.
The mounting means may be bolts or screw holes for fixing the outer wall material or its base material, as shown in FIG. 12, in addition to those shown in FIGS. 4, 5, 6, and 7. As shown in FIG. 13, it can be L-shaped, and as shown in FIG.

As shown in FIGS. 1, 9, 10, and 11, the plate member of the present invention is installed with at least a part embedded in the inner surface of the mold of the synthetic resin foam. This is a member for firmly adhering to a formwork member made of a synthetic resin foam. Further, the attachment means penetrates the foam vertically from the back surface of the synthetic resin foam to the surface opposite to the inner surface of the mold frame, for example, and follows the inner surface of the plate member on the inner surface of the mold frame. Since it is arranged, the synthetic resin foam can be firmly fixed to the foam without damaging it. That is, it exhibits the function of suppressing deformation of the synthetic resin foam having attachment means installed inside and outside the synthetic resin foam.

And the shape of a plate member should just be a shape which can be firmly fixed to the member for formwork, for example, a flat plate, a combination of a plurality of plates, and has a projection part in a part of a plate, for example, holds a metal fitting of a spacer It may have a function.
Further, when the plate member forms a concrete formwork wall that is opposed to each other by connecting the sides of a plurality of formwork forming plates called joiners shown in FIG. In order to maintain the distance between the plate and the side of the mold forming plate adjacent to each other and / or to prevent the connection between the sides of the plate to be released, A member to be attached or embedded, which is a plate portion located inside the plate, a plate portion exposed on the plate surface, a web portion connecting midpoints of these plate portions, and exposed on the plate surface A plurality of through-holes having a projection narrower than the exposed plate portion provided on the surface opposite to the web portion of the plate portion to be parallel to the long side of the plate and having a vertical center axis. The projecting portion having at a plurality of level positions It may be a member for spacing maintained.

The spacing member or joiner shown in FIG. 8, which is shaped to be cast into a synthetic resin foam formwork member or inserted into a corresponding groove, is further multi-staged. Has a protrusion. These protrusions have 2 or more, preferably 3 or more vertical through holes. By having a plurality of protruding portions having two or more, preferably three or more vertical through-holes, the member is 90 degrees identical at both ends for maintaining the distance between the opposing mold forming members. This makes it possible to insert a bar bent in the direction into various positions.
Further, the plate member may have a notch portion for engaging with the attachment means for the purpose of more stably fixing and supporting the attachment means.

Surface-attached composite base material The surface-attached composite base material described in FIG. 3 or FIG. 10 of the present invention is installed with at least a part embedded in a synthetic resin foam on the surface opposite to the mold inner surface side. Various plates and materials can be firmly attached to the surface.
The surface mounting composite base material may be sandwiched by one end of the surface opposite to the mold inner surface side of the mounting means. In that case, various plates and materials are attached to the surface of the surface mounting composite base material. It can be attached firmly and simply in cooperation with the member.

A surface-mounted composite base material is a highly rigid composite reinforcing material formed by molding and processing composite materials such as metal, plastic, wood or their recycled materials, waste materials and foaming agents, ceramics, and glass fibers. It can be fixed and integrated with the formwork member, and can be fixed and integrated vertically and vertically with respect to the formwork member to fix a long object.
And the surface-mounted composite base material of the present invention has a rigid composite reinforcing material fixed to the surface of the synthetic resin foam in the shape of the thick ends of the mold, so that the thick plate and inner end thick material in the mold work Therefore, the work such as transportation, assembly and disassembly is reduced, and the construction period and cost can be reduced. In addition, since the synthetic resin foam adheres to the housing, a heat insulating effect can be expected. After the housing is built, it can also be used as an interior base material to attach a board to the housing, so that interior groundwork is also omitted. Furthermore, in normal interior construction, columns, studs, and body edges are assembled on the frame surface, so the indoor space is narrowed by the thickness of the material. However, in the construction method according to the present invention, the interior board can be directly fixed to the composite reinforcement. So you can make use of that space.

The formwork used when the concrete wall of the formwork is raised from the ground and its construction method are well known, and the present invention replaces such formwork with the synthetic resin foam formwork of the present invention. Is. In the case of the formwork by the formwork member of the present invention, the whole or part of the synthetic resin foam formwork can be left as it is on the finished concrete wall. If necessary, the mold may be removed after the concrete has hardened.
In order to support the lath net and mortar, siding, tile, and the like attached by the attaching means provided on the synthetic resin foam, it is preferable that the binding force between the synthetic resin foam and the concrete is sufficiently strong. Therefore, in the state of the form before flowing concrete, a certain number of facing formwork members are joined together by a spacer or the like, and when the concrete is thrown into the formwork and hardened, the spacer becomes concrete. It is preferable to fix with. As another specific example, an alignment member such as a pipe or timber is attached to the outside of the facing mold, and the relative position between the alignment member and the mold can be fixed to form a mold.
The formwork members are joined at the end faces to form the formwork. The joining method of the end faces of the connecting portions is the joining by bonding even if the concave and convex shapes of the corresponding end faces or other complementary shapes are fitted to each other. However, it may be coupled via another insertion member that is inserted into a slot provided in the foam.

Forming the mold and forming the concrete wall To form the mold by connecting the synthetic resin foam, the end faces of the foam are inserted or bonded or joined by interposition of another connecting member. In this way, the formwork is formed by connecting the formwork members of the synthetic resin foam vertically and horizontally. And a reinforcing bar is arranged in the formed formwork. The spacer also serves as a member for indicating the position where the vertical and horizontal bars of the reinforcing bar are arranged, or for facilitating supporting the reinforcing bar at a fixed position.
After the bar arrangement, a metal rod spacer with a bent end is put in the hole of the attachment means to fix the mutual position of the synthetic resin foam. If necessary, apply reinforcement from the outside.
When the bar arrangement is completed, concrete is poured and vibration is applied, and the concrete is spread throughout the formwork and solidified over time. When the concrete is solidified, the base material of the outer wall material is fixed to the attaching means, and for example, tiles are attached and bonded. If alignment members or the like are used, they are removed, and if necessary, spray coating is performed on the foam surface to complete the walls and foundation.

In the present invention, since the foam has attachment means on the outer surface, lath nets, siding, tiles and the like can be attached using this.
The features of the present invention will be described below.
A) An attaching means is provided through the foam from the inside of the mold of the synthetic resin foam.
B) A plate member for firmly holding the attaching means is embedded in the synthetic resin foam.
C) One end or one side of the attachment means may have a projecting portion that extends and extends to the inside of the mold so that it is embedded and fixed in the concrete after the concrete wall is completed.
D) The other end or the other side of the attaching means has an attaching portion for attaching the outer wall material or its base material to the outside of the synthetic resin foam.
E) The attachment means can be formed of various materials, but is preferably a fire-resistant material, and the attachment means is preferably a flat material such as a U-shaped sheet metal workpiece.
(F) The attaching means may have a shape in which one attaching means penetrates the synthetic resin foam at a plurality of places and is fixed by concrete at a plurality of places.
G) The surface mounting composite base material is sandwiched by one end portion of the surface opposite to the mold inner surface side of the mounting means, and the interior material or the like can be firmly and easily mounted in cooperation with the mounting member.

1) Since the attaching means is attached to the foam, the outer wall member and the interior member can be easily and firmly attached by a metal fitting or the like protruding outward.
2) Since the mounting means is firmly installed in the synthetic resin foam and further embedded in the concrete, it may be provided with a protruding part to improve the adhesion, so that the interior materials etc. are firmly attached This makes it possible to improve the quality of the attached material and improve the quality.
3) Since the attachment means is attached to the foam of the formwork itself, it can be provided at any place regardless of the place.
4) Since at least a part of the plate member is embedded in the synthetic resin foam used as the mold, the mold itself is reinforced and is fixed even during construction, thereby improving the accuracy of the mold.
5) The time and cost can be reduced because it is possible to save the trouble of installing the attaching means after the fact and to shorten the process.
6) Since a space for piping is provided in the synthetic resin foam in advance, operations such as equipment, piping, wiring, etc. can be performed easily and without much time and effort.
7) Since we will not use the slats and thick inner ends in formwork, the work of transporting, assembling and disassembling them will be reduced, and the construction period and cost will be reduced.

The specific example of the member for formwork of this invention is demonstrated below.
FIG. 1 and FIG. 2 show an example in which the attaching means provided on the outer surface 3 of the synthetic resin foam 2 of the mold member 1 of the present invention is a U-groove attachment. In FIG. 1, the U-groove fitting is simultaneously molded and cast in the synthetic resin foam 2. Furthermore, the outer surface perspective view of the member for formwork of this invention which has a U-groove attachment is shown in FIG. FIG. 4 shows a perspective view of the U-groove fixture of the present invention which is simultaneously molded into a synthetic resin foam as an attachment means.
FIG. 9 is a plan sectional view of the mold member of the present invention, showing the positional relationship when a U-groove fitting as a mounting means and a joiner as a plate member are simultaneously molded in a synthetic resin foam.
FIG. 12 is a perspective view of a mold member of the present invention having a large number of bolts simultaneously molded in a synthetic resin foam as a mounting means on the outer surface side of the mold, and FIG. FIG. 14 is a perspective view of a member for a mold according to the present invention having an L-shaped metal fitting simultaneously molded in a resin foam on the outer surface side of the mold, and FIG. The perspective view of the member for molds of this invention which has a metal fitting in the mold outer surface side is shown.
Further, in the present invention, for example, as shown in FIG. 15, an attachment member having an upward groove is attached by engaging a trunk (for example, a hat-shaped steel base material), and further, as shown in FIG. 16, A gypsum board, calcium oxalate board, or siding, tile, or stone board can be attached using screws or the like on the trunk.
In addition, the trunk is also a vertical or horizontal butterfly material support (reinforcing material). And by using these, a board etc. are installed apart from a formwork, and since it does not touch a formwork directly, air permeability is ensured and the effect that dew condensation is eliminated is exhibited.
Further, in the present invention, as shown in FIG. 17, after the mold frame made of the synthetic resin foam is maintained and fixed by the spacer, that is, the surface forming the mold of the mold member is predetermined. It is possible to obtain a method for manufacturing a concrete foundation or a concrete wall of a building in which concrete is placed in a mold to be solidified after being placed facing each other so as to maintain the interval.

The perspective view from the mold inner surface side of the member for formwork of this invention which has the attachment means (U groove attachment tool) simultaneously molded in the synthetic resin foam as an attachment means, and a plate member (joiner). The perspective view from the outer surface of the member for formwork of this invention which has an attachment means. The perspective view from the outer surface of the member for formwork of this invention which has a surface mounting composite base material. The perspective view of the U-groove attachment tool which is an attachment means. The perspective view of the attachment means which provided the protrusion part for improving adhesiveness, when embedded in concrete as an attachment means. The perspective view which shows another specific example of an attachment means. The perspective view which shows another specific example of an attachment means. The perspective view which shows the joiner which is a specific example of a plate member. The plane sectional view of the member for formwork of the present invention in which the attachment means and the plate member were simultaneously formed in the synthetic resin foam. The plane sectional view of the member for formwork in which the attachment means, the plate member, and the surface attachment composite base material were simultaneously formed in the synthetic resin foam. The plane sectional view of the member for formwork in which the one end which has a screw hole was bent in the synthetic resin foam, and it was arranged on the surface of the synthetic resin foam, and the plate member was formed at the same time. The perspective view of the member for molds which has many volt | bolts simultaneously molded in the synthetic resin foam as an attaching means in the mold frame outer surface side. The perspective view of the member for formwork which has the L type metal fitting simultaneously molded in the synthetic resin foam as an attaching means in the formwork outer surface side. The perspective view of the member for molds which has the perforated metal fitting simultaneously formed in the foam as an attachment means in the mold frame outer surface side. FIG. 3 is a perspective view of an attachment member having an upward groove as an embodiment of the present invention, with a trunk being engaged. The perspective view which attached the gypsum board etc. using the screw etc. in the trunk as one Example of this invention. The top view of one specific example which maintains and fixes the space | interval of the member for molds of the synthetic resin foam which has an attachment means with a spacer.

Explanation of symbols

1-formwork member, 2-synthetic resin foam, 3-outer surface, 4-attachment means, 5-plate member, 6-surface-attached composite base material, 7-protruding portion, 8-plate portion, 9-web Parts, 10-through holes, 11-joiner protrusions, 12-bolts, 13-L type metal fittings, 14-hole metal fittings, 15-blade, 16-board material, 17-spacers, 18-form inner surfaces

Claims (13)

  Synthetic resin that forms a slab, concrete foundation or concrete wall formwork when connected, and can remain as part of the slab, foundation or wall after the concrete poured into the formwork has hardened A mounting means for penetrating the foam from the inside of the foam to the outer surface opposite to the inner surface of the mold frame for attaching the foam and the outer wall material, the interior material, and the like, and a mold of the synthetic resin foam A formwork member having a plate member for holding attachment means at least partially embedded in the inner surface of the frame.   The formwork member according to claim 1, wherein the attaching means is engaged with the plate member inside the synthetic resin foam.   The mold according to claim 1 or 2, further comprising a projecting portion extending on the inner side of the mold so as to be embedded and fixed in the concrete after the concrete wall is completed on one end or one side of the mounting means. Frame member.   2. In order to obtain a plurality of fixing points of an outer wall material or its base material on one mounting means, one mounting means has a shape that penetrates a synthetic resin foam at a plurality of locations and is fixed by concrete at a plurality of locations. The member for formwork in any one of -3.   One end of the attachment means supports a lath net and mortar, siding, tile, board, glass plate, stone plate, U-groove, perforated, L-shaped, bolt, metal rod, screw hole, cylindrical hole, The member for formwork in any one of Claims 1-4 which has a hole for a wire stop.   A plate member is a flat plate, The member for formwork in any one of Claims 1-5.   When the plate member connects the sides of a plurality of mold forming plates to form opposing concrete formwork walls, to maintain the opposing wall-to-wall distance and / or Or a member that is attached or embedded in the plate so as to be exposed on the inner surface side of the formwork of the plate in order to prevent the connection between the sides of the adjacent plate for forming the formwork from coming off. The plate portion located inside the plate, the plate portion exposed on the plate surface, the web portion connecting the midpoints of these plate portions, and the web portion of the plate portion exposed on the plate surface are opposite to each other The protrusion having a narrower width than the exposed plate provided on the surface on the side, and having a plurality of through-holes parallel to the long side of the plate and having a central axis in the vertical direction, is provided at a plurality of standard positions. The gap holding member provided as claimed in claim 1. Mold member crab according.   The plate member according to any one of claims 1 to 7, wherein the plate member has a cutout portion that engages with the attachment means for supporting the attachment means.   The member for formwork in any one of Claims 1-8 which has a surface mounting composite base material with which at least one part was embedded by this foam on the outer side on the opposite side to the mold inner surface of a synthetic resin foam.   The member for formwork in any one of Claims 1-9 by which the surface attachment composite base material is clamped by the one end part of the outer side on the opposite side to the formwork inner surface side of an attachment means.   The surface-mounted composite base material is a highly rigid composite reinforcing material formed by molding a composite material such as metal, plastic, wood or recycled materials thereof, waste material and foaming agent, ceramics, and glass fiber. The formwork member according to any one of claims 1 to 10, which is fixed and integrated with the formwork member.   The member for formwork in any one of Claims 1-11 in which the space for piping is provided in the synthetic resin foam.   The surface forming the mold of the member for formwork according to any one of claims 1 to 12 is arranged to face each other so as to maintain a predetermined interval, and is made by placing concrete in the mold and solidifying it. Manufacturing method for building slabs, concrete foundations or concrete walls.

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