JP3843541B2 - Discarded formwork - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discarded mold material having good drainage properties used when placing concrete.
[0002]
[Prior art]
Conventionally, various construction methods have been proposed as a spring water treatment method for constructing a concrete wall in a basement.
[0003]
One of them is a spring water treatment method in which a spring water treatment plate having a recessed portion is disposed on the inner surface side of a precast plate to form a discarded formwork, and concrete is driven into this.
[0004]
In this spring water treatment method, the recessed portion of the spring water treatment plate serves as a drainage channel, and water that has permeated through the concrete wall is drained through the recessed portion.
[0005]
It is also known that a water permeable sheet such as a non-woven fabric is disposed on the inner surface side of the precast plate instead of the spring water treatment plate and the water permeable sheet itself is used as a drainage channel.
[0006]
[Problems to be solved by the invention]
However, in the construction method in which the spring water treatment plate is disposed on the inner surface side of the precast plate, there is a concern that the driven concrete may enter the recessed portion and reduce the function as a drainage channel.
[0007]
Further, even in the construction method in which the water permeable sheet is disposed on the inner side surface of the precast plate, there is a concern that the water passage gap of the water permeable sheet is compressed by the heavy pressure of the poured concrete and the function as a drainage channel is deteriorated.
[0008]
The present invention has been made in view of the above, and an object of the present invention is to provide a discarded frame material having a good drainage property for a long period of time even after a concrete is placed.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a discarded frame material according to claim 1 of the present invention includes a front plate portion, side plate portions on both sides, and a large number of vertical hollow portions partitioned by internal partition plate portions. A plastic net in which a reinforcing wire is embedded in a plastic warp or weft is fixed and integrated on the open rear surface of the square plastic plate provided.
[0010]
The discard frame material according to claim 2 is characterized in that, in the discard frame material according to claim 1, the net is a plastic net having a mesh size of about 0.04 to ¹ cm ^2. The discarded frame material according to claim 3 is characterized in that, in the discarded frame material according to claim 1 or 2, a fiber layer is laminated and integrated on a net.
[0011]
Using the discarded mold frame material of claim 1, assembling a concrete discarded mold frame so that the net on the rear surface is inside the mold frame, and then driving the concrete into the mold to cure it, moisture in the concrete and curing Later infiltrated water that permeates the concrete flows into the hollow part of the square plastic plate from the countless nets of the discarded formwork net, flows down the hollow part, and is discharged from the lower end of the hollow part. The Further, since the reinforcing wire is embedded in the plastic warp and weft constituting the net, there is no possibility that the net will break even if heavy concrete pressure is applied.
[0012]
In addition, when the net is a plastic net having a mesh size of about 0.04 to ¹ cm 2, as in the discarded mold material of claim 2, moisture in the concrete and permeated water from the outside pass through the mesh. Since it is easy to flow into the hollow part and the solid particles of concrete are difficult to enter the hollow part through the mesh, a good drainage function can be maintained for a long time without the solid part clogging the hollow part. Such a plastic net can be easily and firmly fixed and integrated with the open rear surface of the rectangular plastic plate by means such as welding.
[0013]
Further, when the fiber layer is laminated and integrated on the net as in the discarded frame material of claim 3, the inter-fiber gap of the fiber layer serves as a drainage channel, and the fiber layer serves as a filter. Thus, since the solid particles of the concrete are prevented from entering the hollow portion of the rectangular plastic plate from the net of the net, the drainage performance can be maintained for a longer period.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
1 shows a discarded frame material according to an embodiment of the present invention, (a) is a partially broken front view of the discarded frame material, (b) is a longitudinal sectional view of the discarded frame material, c) is a cross-sectional view of the discarded frame material.
[0016]
This discarded frame material P ₁ is composed of a rectangular plastic plate 1 and a net 2.
[0017]
The rectangular plastic plate 1 is a hollow honeycomb structure having a front plate portion 1a, side plate portions 1b and 1b on both sides, and a number of vertical hollow portions 1e partitioned by internal partition plate portions 1c and 1d. It is a plate, and there is no rear plate portion, and the rear surface is open.
[0018]
The net 2 is disposed on the open rear surface of the square plastic plate 1, and is fixedly integrated with the side plate portions 1b, 1b on both sides of the square plastic plate 1 and the tip of the internal partition plate portion 1d by means such as welding. Yes. The means for fixing the net 2 is not limited to welding, and may be bonded with an adhesive or fixed with a stopper.
[0019]
A wire net or the like may be used as the net 2, but it is preferable to use a plastic net. This is because such a plastic net does not have a risk of rusting and has high durability, and can be easily and firmly fixed and integrated by means such as welding.
[0020]
In particular, a plastic net having a square or rhombus mesh with a size of about 0.04 to ¹ cm ² is optimal, and when such a plastic net is used, moisture in concrete and permeated water from the outside as will be described later. Can easily flow into the hollow portion 1e of the rectangular plastic plate 1 through the mesh, and the solid particles of concrete are difficult to enter the hollow portion 1e through the mesh, so that the solid portion does not clog the hollow portion 1e over a long period of time. And has an advantage of maintaining a good drainage function.
[0021]
Also, plastic nets in which reinforcing wire rods are embedded in the plastic warp and weft yarns that make up the net are extremely suitable. When such reinforcing wire rod-containing nets are used, the net will not be affected by heavy concrete pressure. There is no danger of breaking.
[0022]
In addition, polyethylene, polyvinyl chloride, and other general-purpose thermoplastic resins can be used as plastics for the material of the square plastic plate 1 and the net 2, and FRP in which unsaturated polyester is reinforced with fibers. Etc. can also be used.
[0023]
The discarded frame material P ₁ having the above-described configuration is formed by, for example, extruding the rectangular plastic plate 1 using an extrusion molding machine, and simultaneously superimposing the fed-out plastic net 2 on the opened rear surface of the rectangular plastic plate 1. It can be mass-produced efficiently by a method such as welding and integration. This manufacturing method is merely an example, and it can be manufactured by other manufacturing methods, for example, a method in which the square plastic plate 1 is first extruded and the net 2 is later adhered with an adhesive or heat-sealed. Needless to say.
[0024]
Figure 2 is obtained by a longitudinal sectional view showing an example of use of the discarded form member P _1, and illustrates the case of constructing the outer wall of the concrete basement.
[0025]
That is, by using the above-mentioned discarded mold material P ₁ , an inner discarded mold frame for casting concrete (an indoor discarded mold frame) is assembled so that the net 2 on the rear surface is on the inner side of the mold frame. The outer formwork (outdoor formwork) is assembled with the formwork material 3 using plywood, and concrete C is placed in these inner and outer formwork. Then, filling the concrete C is hardened, remove the outer mold member 3, constructed an outer wall made of concrete form member P ₁ discarding the indoor side wall is secured integrally, soil outside the outer wall return.
[0026]
This way to build a concrete outer walls, and moisture in the concrete C, osmosis water W coming penetrate the concrete C from the outside, through the net 2 discard form member P ₁ mesh square plastic plate 1 flows into the hollow portion 1e on the rear surface side, flows down inside the hollow portion 1e and is drained from the lower end, so that no spring is generated on the indoor side wall surface of the concrete outer wall. The net 2 prevents the solid particles of the concrete C from entering the hollow portion 1e, so that a good drainage function can be maintained over a long period without the hollow portion 1e being clogged.
[0027]
In this case, a trough member 4 is provided at the lower end of the discarded mold member P ₁ , and water flowing down from the hollow portion 1 e is collected through the trough member 4 into a water tank (not shown), and this water is drained by a pump or the like. It is desirable to make it so.
[0028]
In the discarded frame member P ₁ of the above-described embodiment, a large number of hollow portions 1e in the vertical direction are moved back and forth by a partition plate portion 1c that partitions the inside of the rectangular plastic plate 1 back and forth and a large number of partition plate portions 1d that partition left and right. Although formed in two rows in a row, the partition structure inside the rectangular plastic plate 1 may be determined as appropriate in consideration of the strength of the rectangular plastic plate 1 and the amount of drainage of the hollow portion 1e.
[0029]
3 to 6 are each a cross-sectional view of a discarded frame material according to another embodiment of the present invention.
[0030]
That is, the discarded frame member P ₂ shown in FIG. 3 has a large number of vertical hollow portions 1 c arranged in a horizontal row by providing a large number of partition plate portions 1 d that divide the inside of the rectangular plastic plate 1 left and right at equal intervals. The net 2 is formed by welding or adhering to the side plate portions 1b, 1b on both sides of the rectangular plastic plate 1 and the tip of the partition plate portion 1d.
[0031]
Such a discarded mold frame P ₂ has a good drainage due to the large opening area of each hollow part 1c, and even if solid particles of concrete may enter the hollow part 1c, the hollow part 1c. No worries about getting stuck.
[0032]
Further, the discarded frame material P ₃ shown in FIG. 4 is obtained by laminating and integrating the fiber layer 5 on the entire surface of the net 2 of the discarded frame material having the same structure as the discarded frame material P ₂ shown in FIG. As the fiber layer 5, for example, non-woven fabrics such as synthetic resin fibers, natural fibers, and inorganic fibers, woven fabrics, mats, and the like are preferably used.
[0033]
When the fiber layer 5 is laminated and integrated with the net 2 in this way, the inter-fiber gap of the fiber layer 5 also functions as a drainage channel, so that the drainage performance is further improved. As a filter, it prevents solid solid particles from entering the hollow portion 1c of the rectangular plastic plate 1 through the mesh of the net 2, and maintains good drainage over a long period without clogging the hollow portion 1c. it can.
[0034]
Further, the discarded frame member P ₄ shown in FIG. 5 is an auxiliary partition plate from the partition plate portion 1 c of the discarded frame member having the same structure as the discarded frame member P ₁ shown in FIG. By further providing a portion 1f, a hollow portion 1c having a large opening area is formed in a horizontal row on the front side of the rectangular plastic plate 1, and a hollow portion 1c having a small opening area is formed in a horizontal row on the rear surface side. It is.
[0035]
As described above, when the auxiliary partition plate portion 1f is provided between the partition plate portions 1d and the net 2 is fixed to the tips of the partition plate portions 1d and 1f, the fixing strength of the net 2 is improved. Even when a large concrete pressure is applied to the net 2 when the concrete is placed, the net 2 is sufficiently supported by the partition plates 1d and 1f, so that the net 2 is damaged or greatly curved toward the hollow portion 1c. Is prevented.
[0036]
In addition, the discarded frame member P ₅ shown in FIG. 6 forms a convex portion 1g on one side plate 1b of the discarded frame member P ₁ having the same structure as the discarded frame member P ₁ shown in FIG. A concave portion 1h is formed on the other side plate portion 1b.
[0037]
Such a discarded mold frame P ₅ is formed by fitting the above-mentioned convex part 1g into the concave part 1h of the adjacent discarded mold frame material when assembling a concrete casting mold, so that the joint member is completely removed. There is an advantage that it can be easily connected without using it, and concrete can be prevented from leaking from the connection point. Note that, instead of the convex portions 1g and the concave portions 1h, for example, connection step portions or the like may be formed on the side plate portions 1b and 1b on both sides.
[0038]
【The invention's effect】
As is clear from the above description, the discarded frame material of the present invention can introduce water into the hollow portion of the rectangular plastic plate through the net of the net and drain it from the lower end of the hollow portion. When an integrated concrete structure is constructed, there is an effect that water in the concrete and permeated water from outside can be efficiently drained to sufficiently prevent spring water on the concrete surface.
[0039]
In particular, a discarded frame material in which a plastic net having a mesh size of about 0.04 to ¹ cm ² is fixed and integrated on the open rear surface of a rectangular plastic plate has good drainage properties and solid concrete particles Since it is difficult to enter the hollow part of the rectangular plastic plate through the mesh, it is possible to maintain a good drainage function for a long time without clogging the hollow part. In addition, the inter-fiber gap of the fiber layer serves as a water passage, and the fiber layer serves as a filter that prevents solid particles from entering the hollow portion. There is a remarkable effect that it can be maintained.
[Brief description of the drawings]
1A and 1B show a discarded mold frame material according to an embodiment of the present invention, in which FIG. 1A is a front view of the discarded mold frame material, FIG. 1B is a longitudinal sectional view of the discarded mold frame material, and FIG. ) Is a cross-sectional view of the discarded frame material.
FIG. 2 is a longitudinal sectional view showing an example of the use of the discarded frame material.
FIG. 3 is a cross-sectional view of a discarded frame member according to another embodiment of the present invention. FIG. 4 is a cross-sectional view of a discarded frame member according to still another embodiment of the present invention. FIG. 6 is a cross-sectional view of a discarded frame member according to still another embodiment of the present invention. FIG. 6 is a cross-sectional view of a discarded frame member according to still another embodiment of the present invention.
1 square plastic plate 1a front plate portion 1b side plate portions 1c, 1d, 1f partition plate portion 1e hollow portion 1g convex portion 1h concave portion 2 net 5 fiber layer

Claims (3)

Reinforced with plastic warp and weft on the open rear surface of a square plastic plate comprising a front plate, side plates on both sides, and a number of longitudinal hollows partitioned by internal partition plates Disposable mold material, which is made by fixing and integrating plastic nets embedded with wire rods. The discarded frame material according to claim 1, wherein the net is a plastic net having a mesh size of about 0.04 to ¹ cm ² .   The discarded frame material according to claim 1 or 2, wherein a fiber layer is laminated and integrated on a net.

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