JPH0441745B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to a waste formwork whose formwork also serves as a finishing material, and particularly to a column formwork which also serves as a finishing material for forming independent columns.

《Prior art》 When forming an independent column or wall using tiles as a finishing material, the formwork pre-installation method has been known, and the formwork used in this method is tile 1 as shown in Figure 4. The surface is pasted to the inside of the formwork board 2,
Concrete 3 for the columns is poured into the formwork thus formed, and after the formwork plates 2 are removed, the work is finished as is.

Various types of tiles and bricks can be used with this construction method, and if the construction is in good condition, there will be almost no flaking of the tiles.

《Problems to be solved by the invention》 However, considering the current state of concrete pouring for construction, defects such as jitters and cold joints often occur in concrete pouring. Peeling also occurred. In particular, defects such as tile adhesion caused by jyanka are difficult to detect and are actually extremely difficult to repair.

In addition, the tile 1 may peel off from the formwork board 2 due to shock or vibration during pouring of the concrete 3, or the tile may be placed onto the surface of the concrete 3 with the tile installed incorrectly, or defects may occur that may cause the tile to crack. It was hot.

The present invention has been made in view of the above circumstances, and its purpose is to provide a column formwork that can also be used as a finishing material and allows concrete to be placed with peace of mind.

<Means for Solving the Problems> In order to achieve the above object, the column formwork that also serves as a finishing material according to the present invention holds the back side of the finishing material in a cylindrical shape with a support fitting, and holds the finishing material in the cylindrical shape. Concrete was poured into the finished material, and the formwork made of the finished material became a permanent formwork. For example, when the finishing material is assembled into a rectangular tube, the supporting metal fittings are formed by supporting the corner portions with angle irons and placing a steel band plate between the angle irons.

<<Embodiments>> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3.

In order to form a prism, angle irons 4 are erected at the four corners forming the corners of the prism, and steel plates 5 are passed between the angle irons 4 to maintain the separated positions of the angle irons 4. 5 constitutes a support fitting for the finishing material 6.

This finishing material 6 has a trade name of "Athrok Tile Panel". This is a cement panel made by extrusion molding a mixture of asbestos and a special admixture, ``Asurok'' (trade name), which has been tiled in advance at a factory. However, the present invention is not limited to this, and it may be one in which one side of a concrete panel mixed with carbon fiber is covered with tiles or bricks.

In order to use such a finishing material 6 as a permanent formwork, the finishing material 6 is glued to the outside of the support fitting made of angle iron 4 and steel plate 5 with the exterior tiles facing outward, and the finishing material 6 is used to form a rectangular shape. A permanent formwork 7 surrounded by is obtained.

If the main reinforcement 8 of the column and the hoop reinforcement 9 are assembled, the second
As shown in the figure, permanent formwork 7 is sequentially covered from above these reinforcing bars, and concrete for the column is cast inside the permanent formwork 7, and the column is completed as it is.

Once the concrete is poured, the back side of the finishing material 6 is integrally attached to the poured concrete, and the angle irons 4 and steel plates 5, which are the supporting metal fittings, restrain the poured concrete from the outer periphery and prevent the occurrence of problems during concrete pouring. Easy concrete swell is also prevented, distortion of the finishing material 6 is extremely small, and tiles etc. do not come off. Moreover, according to this support metal fitting, the hoop muscle 9 is not necessarily required, and it is also possible to omit this.

FIG. 3 shows a permanent formwork 7a using another support metal fitting instead of the support metal fitting made of angle iron 4 and steel plate 5. This is done by placing the finishing material 6 at the center of the back side of the finishing material 6, which has tiles arranged and arranged on the surface of the concrete thin plate.
A base of a rod-shaped support fitting 10 made of a stud or the like is embedded so as to be perpendicular to the finishing material 6 in the horizontal direction when it is erected. Then, a gap corresponding to an appropriate overlap thickness is left around the outer periphery of the main column reinforcement 8, and the tip of the rod-shaped support fitting 10 is welded to the hoop reinforcement 9. In this way, the outer periphery of the column main reinforcing bars 8 can be surrounded by the finishing material 6 in accordance with the column having the desired outer shape. In this embodiment, the column is surrounded by a square shape, and concrete for the column is cast inside the finishing material 6.

Therefore, the length of the rod-shaped support fitting 10 may be cut later to a length equal to an appropriate covering thickness, or it may be processed to a predetermined length from the beginning and attached to the back surface of the finishing material 6. This attachment means can not only be buried as described, but also be bonded later with an adhesive to the back side of the existing finishing material.

<<Effects>> As described in detail above, according to the column formwork that can also be used as a finishing material according to the present invention, since the back side of the finishing material is held in a cylindrical shape by the support fitting, it is possible to hold the finishing material in a desired shape. Concrete is poured inside the finishing material without the need for square pipes or form ties (such as bolts for fastening the formwork), while the outer surfaces of tiles, bricks, etc. on the outside of the finishing material touch the poured concrete. Because it is exposed to the outside and does not come into contact with the fluidized concrete that occurs when concrete is poured, it prevents tiles and bricks from peeling off and getting dirty, and allows concrete for columns to be poured with confidence and compacted by vibration. Work to increase concrete density is also possible. Furthermore, no problem arises regarding the finishing accuracy of the finished material.

[Brief explanation of drawings]

Figure 1 A is a cross-sectional view of the column formwork that is also used as a finishing material, Figure B is a partially cutaway perspective view, Figure 2 is a perspective view explaining the construction procedure, and Figure 3 is a cross-sectional view that is also used as a finishing material. FIG. 4 is a cross-sectional view showing another embodiment of the column formwork, and FIG. 4 is a side view illustrating the formwork used in the conventional construction method. 1... Tile, 2... Form board, 3... Concrete, 4... Angle iron, 5... Steel plate, 6... Finishing material, 7... Permanent formwork, 8... Main reinforcement, 9... Hoop Line, 10... Rod-shaped support fitting.

Claims (1)

[Scope of Claims] 1. The back side of the finishing material is held in a cylindrical shape with a supporting metal fitting, concrete is poured into the finishing material held in the cylindrical shape, and the formwork made of the finishing material is made into a permanent formwork. Column formwork that can also be used as a finishing material. 2. When the above-mentioned supporting metal fittings are used to assemble finishing materials into a square tube,
The column formwork also used as a finishing material according to claim 1, wherein the corner portions are supported by angle irons, and a steel band plate is provided between the angle irons. 3. A column type that can also be used as a finishing material as claimed in claim 1, wherein the support fitting projects inward from the back surface of the finishing material substantially horizontally, and its tip is attached to the main column reinforcement or hoop reinforcement. frame.