JP2879009B2 - Concrete formwork support - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for a concrete formwork used to support a concrete formwork and a reinforcing bar when placing a foundation concrete.

[0002]

2. Description of the Related Art In a conventional support for a concrete formwork of this type, a pair of metal support legs are fixed upright at a predetermined interval on a metal bottom plate, and a metal support is provided between the two support legs. Is fixed horizontally. The upper parts of both support legs are bent laterally, on which the concrete formwork is supported. When the foundation concrete is poured, the concrete form is supported on both support legs while the support is placed on the discarded concrete, and the reinforcement for reinforcing the concrete on the support is It supports the horizontal bars of the rebar as a material.

[0003]

However, in this conventional support for a concrete formwork, the horizontal bars of the reinforcing bars are directly supported on a metal support portion, and in this state, the supports are placed in the concrete together with the reinforcing bars. It is designed to be embedded. For this reason, rainwater descends from both support legs of the support that supports the concrete formwork along the vertical part of the support legs,
The rainwater further reaches the reinforcing bar through the support. Therefore, there is a problem that the rainwater comes into contact with the reinforcing bar and the reinforcing bar is corroded.

The present invention has been made by paying attention to such problems existing in the conventional technology. The purpose is for concrete formwork that does not have the risk of corroding reinforcing materials such as reinforcing steel supported on the support parts even if rainwater etc. infiltrates the reinforcement support parts along both support legs. It is to provide a support.

[0005]

According to a first aspect of the present invention, there is provided a support for a concrete form, comprising a metal support leg, and a concrete form on the support leg. A concrete form support having a reinforcing member supporting portion for supporting a metal reinforcing member buried in concrete and reinforcing concrete, wherein the reinforcing member supporting portion is provided. In order to be interposed between the reinforcing member and the reinforcing member, a blocking member for separating the reinforcing member supporting portion from the reinforcing member is provided on the reinforcing member supporting portion.

According to a second aspect of the present invention, in the support for a concrete form according to the first aspect, the support leg is constituted by a pair of metal rods and the concrete form is supported on the support leg. A frame support portion is provided, and the reinforcing member support portion is constituted by a metal support portion horizontally fixed between both support legs, and a reinforcing bar as a reinforcing material is supported on the support portion, and the support portion and the reinforcing bar are provided. The supporting member is provided with a blocking member for separating the reinforcing member from the reinforcing bar so as to be interposed therebetween.

According to a third aspect of the present invention, in the support for a concrete formwork according to the first or second aspect, the blocking member is formed of a synthetic resin in a cylindrical shape, and is provided on a part of the outer periphery. It is fitted to the support part via a wearing groove.

According to the fourth aspect of the present invention, in the support for a concrete formwork according to the first or second aspect, the blocking member is formed of a synthetic resin in a cylindrical shape, and the supporting legs are fixed to both ends of the supporting portion. Prior to this, it was inserted into the support.

According to a fifth aspect of the present invention, in the support for a concrete formwork according to the first or second aspect, the blocking member is formed by coating a coating made of a synthetic resin on an outer periphery of the supporting portion. It is composed of a coating film.

According to a sixth aspect of the present invention, in the support of the concrete formwork according to the first or second aspect, the blocking member is formed by bonding a rubber or resin material to the outer periphery of the supporting portion by heating and pressure bonding or bonding. It is configured by bonding with an agent.

Accordingly, when the foundation concrete is cast by using the concrete form support according to the first aspect, the support legs are placed in a state where the support is placed on the discarded concrete. The concrete formwork is supported on the frame support, and the reinforcement is supported on the reinforcement support. At this time, since the blocking member for separating the supporting portion and the reinforcing member is provided on the reinforcing member supporting portion, the blocking member is supported by the reinforcing member supporting portion and the reinforcing member while the reinforcing member is supported. Interposed between

For this reason, even if rainwater or the like infiltrates the reinforcing member support portion along the support legs of the support member in a state where the support member is embedded in the concrete together with the reinforcing member, the support member is supported on the reinforcing member support portion. Water does not come into contact with the metal reinforcements that have been used. In addition, even if the reinforcing material of the reinforcing material supporting portion is corroded, the corrosion does not transfer to the reinforcing material. Therefore, the possibility that the reinforcing material is corroded can be prevented.

According to a second aspect of the present invention, there is provided a support for a concrete formwork, wherein a support leg is constituted by a pair of metal rods, and a form support portion for supporting the concrete formwork is provided on the support leg. A reinforcing member supporting portion is provided with a metal supporting portion horizontally fixed between the legs, and a reinforcing bar as a reinforcing member is supported on the supporting portion. The blocking member is provided on the support so as to be interposed between the support and the reinforcing bar.

[0014] Therefore, the supporting member can be simply configured, and corrosion of the reinforcing bar supported on the reinforcing member supporting portion can be prevented. In the concrete form support according to the third aspect, the blocking member is formed of a synthetic resin in a cylindrical shape, and is fitted to the support portion through a fitting groove provided in a part of the outer periphery. ing. For this reason,
By simply manufacturing the blocking member separately, the blocking member can be fitted to the support portion of the existing support, and can be easily implemented.

According to the fourth aspect of the present invention, the blocking member is formed of a synthetic resin in a cylindrical shape, and is inserted into the supporting portion prior to fixing the supporting legs to both ends of the supporting portion. It has become. Therefore, the structure of the blocking member can be made simple and inexpensive.

According to the fifth aspect of the present invention, the blocking member is formed of a coating film formed by coating the outer periphery of the supporting portion with a coating made of a synthetic resin. Therefore,
Even after the support legs are fixed to both ends of the support portion, the blocking member can be easily formed by coating with the paint.

In the support for a concrete form according to a sixth aspect of the present invention, the blocking member is formed by bonding a rubber material or a resin material to the outer periphery of the support portion by heating and pressing or by using an adhesive. Therefore, the blocking member can be configured simply and inexpensively.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.

As shown in FIG. 1, the support 11 of this embodiment includes a bottom plate 12, a pair of support legs 13, a support rod 14 as a support, and a pair of receiving plates 15.
The bottom plate 12 is formed in a flat plate shape by a metal plate, and a ridge 12a is bent on the outer peripheral upper surface. Both support legs 13
Is bent substantially in a U-shape by a metal bar so as to have a fixing portion 13a, a leg portion 13b, and a receiving portion 13c as a form support portion, and is erected on the upper surface of the bottom plate 12 by the fixing portion 13a. Are fixed by welding at predetermined intervals.

The support rod 14 is cut into a predetermined length by a metal rod, and is fixed by welding to an intermediate portion of the legs 13b of the support legs 13 in a horizontal state. Both receiving plates 15 are formed in a flat plate shape by a metal plate, and a ridge 15a is formed at one end edge thereof. Each receiving plate 15 is welded and fixed to the lower surface of the receiving portion 13c of each of the support legs 13 at the edge opposite to the ridge 15a.

The blocking member 16 for blocking water is formed of a synthetic resin into a cylindrical shape, and a fitting groove 16a is formed in a part of the outer periphery thereof, and guides are provided on both side edges of the fitting groove 16a. A piece 16b is formed to protrude. The blocking member 16 supports the two guide pieces 16b by the support rods 14.
Is pressed against the support rod 14 in a state of being in contact with the outer peripheral upper surface of the support rod 14 so as to be fitted over the support rod 14 through the fitting groove 16a.

Next, the operation of the concrete formwork support constructed as described above will be described. Now, when the foundation concrete is cast using the support 11, as shown in FIG. 2, the plurality of supports 11 are placed on the mortar 17 at predetermined intervals, and each support 11 is placed. 11
The spacing member 18 is placed on both of the receiving plates 15. In this state, receiving portions 13 of both support legs 13 in each support tool 11 are provided.
The form base 19 for the cloth foundation concrete is supported on c, and the position is regulated by the outer regulating piece 18a and the inner regulating piece 18b of the spacing member 18. A base concrete formwork 20 is installed on the mortar 17 on both sides of the support 11, and their inner edges are supported on the receiving portions 13 c of the support legs 13.

Further, the form 1 for fabric-based concrete
The reinforcing bar 21 composed of a large number of horizontal bars 21a and vertical bars 21b is inserted between the bars 9, and the lowermost horizontal bar 21a is supported on the support rod 14 of each support 11. At this time, the support rod 14
Since a blocking member 16 made of a synthetic resin is fitted over the cover rod, as shown in FIG.
And a horizontal bar 21 a of the reinforcing bar 21.

Thereafter, when concrete is poured between the cloth foundation concrete forms 19, the base concrete is formed by the base concrete forms 20 and the cloth foundation concrete is formed by the cloth foundation concrete forms 19. . And each support tool 11 is a rebar 21
At the same time, it is embedded in these concretes.

The effects exerted by the above embodiment will be described below. (1) In this concrete formwork support, when a blocking member 16 for blocking water is fitted on the support rod 14 to cover and support the horizontal bar 21a of the reinforcing bar 21 on the support rod 14, this blocking member is used. Reference numeral 16 is interposed between the support rod 14 and the horizontal bar 21 a of the reinforcing bar 21. Therefore, even when rainwater or the like infiltrates the support rod 14 along the two support legs 13 of the support 11 in a state where the support 11 is embedded in the concrete together with the reinforcing bar 21, the support rod 16
Water does not come into contact with the reinforcing bar 21 supported above. In addition, even if the support rod 16 is corroded, the corrosion does not transfer to the reinforcing bar 21. Therefore, the possibility that the reinforcing bar 21 is corroded can be reliably prevented.

(2) In this support for a concrete formwork, the blocking member 16 is formed of a synthetic resin in a cylindrical shape, and is fitted to the support rod 14 through a fitting groove 16a provided in a part of the outer periphery. It is supposed to be. For this reason,
Only by separately manufacturing the blocking member 16 by an extrusion molding method or the like, the blocking member 16 is connected to the support rod 14 of the existing support 11.
And can be easily implemented.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. Now, in the support 11 of this embodiment, the blocking member 16 is formed of a synthetic resin into a cylindrical shape. Prior to welding and fixing the legs 13b of the support legs 13 to both ends of the support rod 14, the blocking member 16 is inserted into the support rod 14.

Therefore, in the support tool 11 of the second embodiment, similarly to the above-described first embodiment, when rainwater or the like enters the support rod 14 along the two support legs 13 of the support tool 11. In addition, it is possible to prevent the rebar 21 supported on the supporting rod 14 from being corroded. Moreover, in the support 11 of the second embodiment, since the blocking member 16 has a simple cylindrical shape, the structure can be made simple and inexpensive.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. Now, in the support device 11 of this embodiment, the support portion 14 and the pair of receiving plates 15 are integrally formed of a metal plate,
The projections 14a are formed on both lower surfaces of both sides of the base 4 in a bent form,
Protrusions 15a are formed on both upper surfaces of each receiving plate 15 by bending. The two receiving plates 15 are welded and fixed to the outer peripheral upper surfaces of the receiving portions 13c of the two supporting legs 13 so that the supporting portion 14 is laid across the intermediate portion between the two supporting legs 13.

The blocking member 16 is formed of a synthetic resin in the shape of a square tube, and a fitting groove 16a is formed on the lower surface thereof, and guide pieces 16b protrude from both side edges of the fitting groove 16a. ing. And, this blocking member 1
6 is fitted onto the support portion 14 through the fitting groove 16a by pressing the guide piece 16b toward the support portion 14 in a state where the two guide pieces 16b are in contact with the outer peripheral upper surface of the support portion 14. Therefore, also in the third embodiment, substantially the same operation and effect as in the first embodiment can be exhibited.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG. Now, in the fourth embodiment, similarly to the third embodiment, the support 1
4 and a pair of receiving plates 15 are integrally formed by a metal plate. Further, the blocking member 16 is formed in a square cylindrical shape by a synthetic resin, and a fitting groove 16a is formed on one side surface thereof, and the guide pieces 1 are formed on both side edges of the fitting groove 16a.
6b is formed to protrude.

The blocking member 16 is connected to both guide pieces 1.
6b is pressed against the support portion 14 in a state of being in contact with one outer peripheral side surface of the support portion 14 so that the fitting groove 1 is formed.
It is fitted over the support part 14 through 6a. Therefore, in the fourth embodiment, substantially the same operation and effect as in the first embodiment can be exhibited.

(Fifth Embodiment) Next, a fifth embodiment of the present invention will be described with reference to FIG. In the fifth embodiment, the leg 13b and the receiving portion 13c of the pair of left and right support legs 13 are formed in an inverted U-shape, and the space between the two support legs 13 is fixed on the bottom plate 12. 13d
Are formed integrally. The fixing portions 13a at both ends extend in directions opposite to each other so as to be orthogonal to a plane formed by the leg portion 13b and the receiving portion 13c. The support rod 14 is provided between the center legs 13b.

The receiving plate 15 has a plurality of uneven reinforcing ribs 15.
In addition to the reinforcing ribs 15b, the protrusions 15a are formed with uneven reinforcing portions 15c corresponding to the reinforcing ribs 15b. The holes 22 are provided at a plurality of locations on the bottom plate 12 to ensure the positioning when the support 11 is positioned and fixed on the mortar 17. The plurality of reinforcing ribs 23 are provided on the bottom plate 1.
2 to maintain the strength of the bottom plate 12.

According to this embodiment, in addition to the effects of the first embodiment, the strength of the support leg 13 is improved because the leg portion 13b and the receiving portion 13c of the support leg 13 are formed in an inverted U-shape. And the diameter of the support leg 13 can be reduced.

(Sixth Embodiment) Next, a sixth embodiment of the present invention will be described with reference to FIG. In the sixth embodiment, the leg 13b of the support leg 13 and the receiving portion 13
The portion c has a horizontally long inverted U shape as a whole. The fixing portions 13a at both ends extend in directions opposite to each other so as to be orthogonal to a plane formed by the leg portion 13b and the receiving portion 13c.
The receiving plate 15 is welded to the lower surface on both sides of the receiving portion 13c of the support leg 13. The support part 14 is the receiving part 1 of the support leg 13.
3c is formed in the central part, and the blocking member 1 is
6 is overfitted. The bottom plate 12 is formed in a flat plate shape, and has no ridge 12a.

According to this embodiment, in addition to the effects of the first embodiment, the structure of the support leg 13 can be simplified, and
The welding work of the support portion 14 can be omitted, and the manufacturing cost can be reduced.

(Seventh Embodiment) Next, a seventh embodiment of the present invention will be described with reference to FIGS. Now,
In the seventh embodiment, the side plate 24 is located on the side of the bottom plate 12, one end is flush with one end surface of the bottom plate 12, and the other end is located on the bottom plate 12.
Are fixedly mounted in an upright state so as to be shorter than the other end surface. The other end surface of the side plate 24 serves as an inner regulating portion 24 a for regulating the inner position of the mold 19. And the side plate 2
A horizontal streak 21 a is supported on the upper end edge of 4 via a blocking member 16. The support leg 13 has a substantially crank-shaped portion, a lower portion welded to the side plate 24, and an upper portion formed with the receiving portion 13.
and a rod-shaped member 25 welded to the inside of the member c. Above the receiving portion 13c of the rod-shaped member 25, an inner regulating portion 26 of the formwork 19 is formed.

The outer regulating portion 27a is formed so as to extend upward from the end of the receiving portion 13c, and the mold 1
9 is restricted. The outer regulating portion 27b is the fixed portion 1.
It is formed so as to extend upward from the end of 3a, and regulates the outer position of the mold 19 located at the lower part. The nail holes 28 are provided at the left and right positions of the bottom plate 12 so that the nails 29 are inserted therethrough.
Is positioned and fixed to the mortar 17.

According to this embodiment, in addition to the effects of the first embodiment, the horizontal streaks 21a can be reliably supported on the side plate 24, and can easily cope with the molds 19 having different vertical positions.

(Eighth Embodiment) Next, an eighth embodiment of the present invention will be described with reference to FIGS. Now,
In the eighth embodiment, as shown in FIGS. 12 (a) to 12 (c), the blocking member 16 is a semi-cylindrical engaging piece 16c at both ends and a connecting plate 16d for connecting the two engaging pieces 16c. Are formed integrally. As shown in FIG.
2 is formed in a plate shape. The legs 13b and the receiving portion 13c of the pair of support legs 13 are formed in an inverted U-shape, respectively, and the fixing portions 13a are opposite to each other so as to be orthogonal to the plane formed by the leg 13b and the receiving portion 13c. Extending. The fixing portion 13a is welded to the bottom plate 12. The support rod 14 is provided between the center legs 13b.

The two engaging pieces 16c of the blocking member 16 engage with the legs 13b of the support legs 13, and the connecting plate 1
6 d is supported on the support rod 14. The horizontal streak 21a is supported on the support rod 14 via the blocking member 16.

According to this embodiment, the effects of the first embodiment can be obtained, and in addition, the connecting plate 16d of the support member 13 is engaged with the two engaging pieces 16c of the blocking member 16 in engagement with the two legs 13b of the support leg 13. Is supported on the support rod 14, so that the blocking member 1
6 can be reliably arranged over the entire support rod 14,
1a can be supported at any position of the support rod 14.

The present invention can be embodied with the following modifications. (A) In the support 11 of the first embodiment shown in FIGS. 1 to 3, a synthetic resin is dissolved in an organic solvent in the vicinity of a portion where the blocking member comes into contact with the horizontal streak 21 a on the outer periphery of the support rod 14 made of a metal rod. To be composed of a coating film formed by applying a paint. (B) The support 11 of the third embodiment shown in FIGS. 5 and 6.
In the above, the blocking member is formed by baking a paint film or a baking paint formed by applying a paint obtained by dissolving a synthetic resin in an organic solvent in the vicinity of a portion in contact with the horizontal streak 21a on the outer peripheral surface of the support portion 14 made of a metal plate. To be composed of the applied coating. (C) In each embodiment, the blocking member is formed by heating and melting a synthetic resin such as a polyamide resin, a polyester resin, or an acrylic resin and welding the synthetic resin to the outer peripheral surface of the support rod 14 or the support portion 14. (D) A member having a predetermined length with an arc-shaped cross section is adhered and fixed to the upper part of the peripheral surface of the support rod 14 or the support part 14 with an adhesive as the blocking member. (E) As a blocking member, a rubber material piece such as silicone rubber or acrylic rubber or a resin material piece such as polyamide resin or polyester resin is heated and pressure-bonded to the support rod 14 or the upper peripheral surface of the support portion 14 or an adhesive. Or by joining them together.

According to the other examples (a) to (e), the blocking member can be easily formed by a simple operation. (F) The blocking member may be provided on the support rod 14 or the horizontal streak 21a in contact with the support portion 14 in each embodiment, or the support rod 14 may be provided.
Alternatively, it is provided on both the support portion 14 and the horizontal streak 21a. With this configuration, the corrosion of the horizontal streaks 21a can be more effectively prevented. (G) A blocking member is formed by winding a tape-like member around the supporting rod 14, the supporting portion 14, or the horizontal streak 21a. According to this configuration, the thickness of the blocking member can be adjusted by the amount of winding of the tape-shaped member. (H) In the second embodiment, the inner diameter of the cylindrical blocking member 16 has a predetermined gap between the blocking member 16 and the supporting rod 14, and the blocking member 16 rotates with respect to the supporting rod 14. Be configured to be able to. Further, the length of the blocking member 16 is formed to be about two-thirds of the distance between the two support legs 13.

In this manner, the reinforcing bar 21 is connected to the blocking member 1.
When the contact member 6 contacts and applies a force to the blocking member 16, the blocking member 16 rotates, so that the blocking member 16 can be prevented from being damaged.

Further, the technical ideas that can be grasped from the above embodiment will be described below. (1) The support for a concrete formwork according to claim 3, wherein the blocking member includes a guide piece that is formed in a tapered shape and continues so as to open outward from the fitting groove.

According to this configuration, the blocking member can be easily fitted to the support. (2) The pair of support legs according to claim 2, wherein the pair of support legs are formed by bending a metal rod to form an inverted U shape, and both ends of the bottom portion are bent and extended so as to extend in opposite directions, and are fixed to the bottom plate. Support for concrete formwork.

In this way, the strength of the support can be increased, and the support can be fixed to the bottom plate in a stable state. (3) The supporting leg according to claim 1, wherein the supporting leg is formed in a horizontally long inverted U-shape with one metal rod, the upper portion is kept horizontal, both sides thereof are used as a mold supporting portion, and the intermediate portion is used as a reinforcing material supporting portion. A support for a concrete formwork as described.

With this structure, the structure of the support can be simplified, and the manufacturing cost can be reduced. (4) The concrete formwork support according to claim 1, wherein the reinforcing member supporting portion is formed of a plate-like body, and the reinforcing member is supported on a side surface of the plate-like body.

In this manner, the strength of the reinforcing member supporting portion can be increased, and the reinforcing member can be reliably supported by the supporting portion. (5) The concrete formwork support according to claim 1, wherein the support leg is formed in a substantially crank shape, and the concrete formwork is supported on an upper portion and a lower portion, respectively.

In this way, the concrete formwork can be easily supported at different heights. (6) The concrete form support according to the above (5), wherein the upper and lower portions of the support legs are provided with regulating portions for regulating the movement of the concrete form.

According to this configuration, the support legs can also serve as the spacing members, and the movement of the concrete form can be restricted. (7) The concrete mold according to claim 2, wherein the blocking member has an engaging portion at both ends for engaging with the support leg, and has a connecting portion supported on the supporting portion between the two engaging portions. Frame support.

According to this structure, the blocking member can be reliably engaged with the two support legs, and the reinforcing member can be supported on the connecting portion extending between the two supporting legs, so that corrosion of the reinforcing member can be easily prevented.

[0055]

The present invention is configured as described above, and has the following effects. According to the first aspect of the present invention, even when rainwater or the like infiltrates the reinforcing member support portion along the support leg of the support, it is possible to prevent the reinforcing member supported on the support portion from being corroded. be able to.

According to the second aspect of the present invention, it is possible to easily configure the support tool and to prevent corrosion of the rebar supported on the reinforcing member support portion. According to the third aspect of the present invention, it is possible to easily implement the shielding member by fitting the shielding member to the supporting portion of the existing support only by separately manufacturing the shielding member.

According to the fourth aspect of the invention, the structure of the blocking member can be made simple and inexpensive. Claim 5
According to the invention described in (1), the blocking member can be easily formed by coating with the paint before and after the support legs are fixed to both ends of the support portion.

According to the sixth aspect of the present invention, the blocking member can be easily and inexpensively constructed by a simple operation.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a formwork support according to the present invention.

FIG. 2 is a partial cross-sectional view showing a use state of the formwork support.

FIG. 3 is a partially enlarged sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is an exploded perspective view of a main part showing a second embodiment of the formwork support of the present invention.

FIG. 5 is an exploded perspective view showing a third embodiment of the formwork support of the present invention.

FIG. 6 is a partially enlarged cross-sectional view of the formwork support.

FIG. 7 is a partial sectional view showing a fourth embodiment of the formwork support of the present invention.

FIG. 8 is an exploded perspective view showing a fifth embodiment of the formwork support of the present invention.

FIG. 9 is an exploded perspective view showing a sixth embodiment of the formwork support of the present invention.

FIG. 10 is a perspective view showing a seventh embodiment of the formwork support of the present invention.

FIG. 11 is a sectional view showing a use state of the formwork support.

12A is a plan view showing a blocking member according to an eighth embodiment, FIG. 12B is a front view thereof, and FIG. 12C is a side view thereof.

FIG. 13 is an exploded perspective view showing a formwork support of the eighth embodiment.

[Explanation of symbols]

11: Supporting tool, 13: Supporting leg, 13c: Receiving part as a formwork supporting part, 14: Supporting rod as a reinforcing material supporting part, 16
... Intercepting member, 16a ... fitting groove, 19 ... formwork for cloth foundation concrete, 20 ... formwork for base concrete, 21 ...
Reinforcing bars as reinforcement, 21a ... transverse bars as reinforcement, 2
4: Side plate as reinforcing material support.

Claims (6)

(57) [Claims] The present invention has a metal supporting leg, a form supporting portion for supporting a concrete form on the supporting leg, and a metal reinforcing material embedded in the concrete to reinforce the concrete. In a concrete formwork support provided with a reinforcing material supporting portion for supporting, as interposed between the reinforcing material supporting portion and the reinforcing material,
A support for a concrete formwork provided with a blocking member on a reinforcing material support portion for separating the reinforcing material support portion from the reinforcing material. 2. The support leg is composed of a pair of metal rods, a form support for supporting a concrete form is provided on the support leg, and the reinforcing material support is horizontally fixed between the support legs. The supporting portion is formed of a metal supporting portion and supports a reinforcing bar as a reinforcing material on the supporting portion, and the supporting portion and the reinforcing bar are provided on the supporting portion so as to be interposed between the supporting portion and the reinforcing bar. The concrete form support according to claim 1, further comprising a blocking member for separating the concrete form. 3. The concrete formwork according to claim 1, wherein the blocking member is formed of a synthetic resin in a cylindrical shape, and is fitted to the supporting portion via a fitting groove provided in a part of the outer periphery. Support. 4. The concrete formwork according to claim 1, wherein the blocking member is formed of a synthetic resin into a cylindrical shape, and is fitted to the support portion before fixing the support legs to both ends of the support portion. Support. 5. The concrete formwork support according to claim 1, wherein the blocking member is constituted by a coating film formed by coating a coating made of a synthetic resin on an outer periphery of the support portion. 6. The support for a concrete formwork according to claim 1, wherein the blocking member is formed by bonding a rubber material or a resin material to the outer periphery of the support portion by heating and pressure bonding or bonding with an adhesive.