JPS60144465A - Concrete mold frame - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a concrete formwork used in architectural concrete work, into which foamed plastic board insulation materials, ALC boards, etc. are simultaneously cast.

Taking as an example the simultaneous implantation of conventional foamed plastic board insulation materials, as shown in Figure 1, the foamed plastic vertical strips 3a,
Usually, it is assembled with a fastener 4 via a horizontal flap 3b, and is made of a foamed plastic board insulation material 1 shown in Fig. 1, or a plastic board, a paper board, a cloth board, or an inorganic calcium silicate board. , ALC (referred to as base plate in the present invention) has low bending strength, so the outer plywood panel 2
The structure was designed to receive lateral pressure during pouring of ready-mixed concrete.

However, the above-mentioned plywood panel 2 is made by nailing a wooden stile around the periphery of a plywood board of a predetermined size and a padding in the longitudinal direction of the center.Although not shown in FIG. When the plywood panel 2 is assembled repeatedly, the concrete leaking from the joints of the inner base material will firmly adhere to the inner surface of the plywood panel 2, resulting in damage to the plywood panel 2 during demolding, which will shorten the life of the plywood panel 2. However, it required manpower to transport and clean the concrete that had adhered to it.

The present invention was made in view of the above-mentioned circumstances, and
When pouring base material at the same time, tighten wire mesh such as welded wire mesh or lath, or a combination of wire mesh and waterproof paper, etc. with iron wire on the outside of the base material. By using a formwork with a single-sided panel on at least one side, the number of times it can be repurposed is reduced.
It attempts to provide concrete formwork by using panels made of plywood, metal plates, etc., which require washing after use and are heavy and time-consuming to transport.

The present invention will be described in detail below based on the accompanying drawings.

In the drawings, parts corresponding to those in the conventional example are given the same reference numerals, and explanations of those parts will be omitted.

FIG. 2 is a partially cutaway perspective view of a concrete formwork showing an embodiment of the present invention, and FIG. 3 is an explanatory diagram of a fastening fitting using exposed square steel pipe material.

In Figure 2, 5a is poured concrete, 5b is reinforcing steel, and 6 is concrete! J-) A base material to be cast at the same time as 5a, such as a plastic board, a foamed plastic board, a board made of solidified paper or cloth, an inorganic calcium silicate board, or an ALC board.

7 is a wire mesh such as a welded wire mesh or lath, but the present invention includes a second wire mesh.
The invention includes a configuration in which waterproof paper or the like is combined with the wire mesh. 3 Bald wood palm This figure shows a square steel pipe (square pipe). □ In the case of this example, a square pipe is suitable, but round steel pipes, shaped steel such as C type, L type, wood, etc. You can also use 9 is a clamp for mutually tightening the vertical and horizontal flaps of the square steel pipe.

FIG. 2 shows the case where the formwork of the present invention is implemented on one side, and the concrete IJ-) 5a has already been cast.

A base material 6 such as a foamed plastic insulation board or an ALC board, which is cast simultaneously, is provided in the subdivision in contact with the concrete sa. On the outside of the base material 6, wire mesh 7 is attached with iron wire 10 to the inside of a 1-bata lattice, which is made by assembling vertical and horizontal square steel pipes 3a and 3b into a lattice shape using clamps 9.
Tightening panels 71c' are provided at various locations.In the invention of Saba 2, a waterproof paper (not shown) or the like is pasted on one side of the wire mesh 70 to make it composite.

In the present invention, the above-mentioned lattice-shaped lattice material 3 is assembled into a lattice shape using clamps 9, and then the wire mesh 75- or a combination of the wire mesh 7 and waterproof paper, etc., and the above-mentioned 1-bata lattice. The combination is called a "bata panel".In order to assemble the above-mentioned vertical flaps 3a and horizontal flaps 3b in a lattice shape, in addition to using the clamps 9, it is possible to tighten them with wire, or to tighten the exposed pieces of wood. In the case of steel pipes or shaped steel, they may be welded together.

The construction as shown in Figure 2 is implemented on one side of the formwork, and the other side (not shown) is a combination of ordinary weir boards (plywood panels) with splinters, without the simultaneous casting of base material, or, in some cases, Depending on the case, both sides may be configured as shown in FIG. The formwork arranged as described above is formed by assembling the fasteners 11 from both sides as shown in FIG. 3, and concrete 51 is poured into the formwork.

In the concrete formwork of the present invention constructed as described above, the bending deformation of the base material, which has low bending strength when used alone, is supported by the wire mesh on the outside of the base material, and the wire mesh supports the base material. To withstand bending and maintain its flat shape,
The above-mentioned wire mesh is tightened with iron wire to a raised lattice that is assembled into a lattice shape that is denser than the spacing between the ridges in a formwork conventionally used. The second invention improves the strength by suppressing concrete leaking from the joints of the base material by attaching waterproof paper or the like to one side of the wire mesh.

According to the results of various experiments with the concrete formwork of the present invention, it can be used as a base material of 25 ml! Thick extruded polystyrene foam insulation material, welded wire mesh as the wire mesh, lightweight steel with a diameter of 60 x 60 x 2.3 as the rib material, and 150 mm as the vertical part.
1 to 300 square intervals, 300m1K to 600 horizontally
When the concrete was placed at the III+ interval, ready-mixed concrete with a slump of 15 to 16 was poured to a height of 3 m and no abnormality was observed.

It was also possible to pound the formwork or use a vibrator to prevent junkers. □ As explained in detail above, according to the concrete formwork of the present invention, ■ demolding is easy, ■ the conventional effort of transporting weir boards and cleaning and maintenance of used weir boards can be saved, and ■ When surface finishing of base materials such as insulation materials and ALC materials is required, the wire mesh serves as the base for mortar and GRC construction, simplifying the process. However, since the present invention does not use expensive weir boards or panels, it is possible to reduce the cost. The second invention further improves the strength of the concrete formwork of the first invention.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a conventional formwork for simultaneous injection of foamed plastic board insulation, Fig. 2 is a partially cutaway perspective view of a concrete formwork showing an embodiment of the present invention, and Fig. 3 is a square steel pipe (square pipe). ) Benefit flannel made from exposed wood, 3... Butata wood, 3a
... Vertical side, 3b... Horizontal side, 4... Fastening hardware,
5a... Concrete, 5b... Rebar, 6... Base material, 7... Wire mesh, 9... Clamp, 10... Iron wire, 11... Fastening hardware patent applicant Kanebuchi Chemical Attorney for Kogyo Co., Ltd. Patent Attorney Hide Tosa Fuji 1919-! =1] Figure

Claims (4)

[Claims] (1) For the formwork on at least one side, use plastic plates, foamed plastic plates, paper plates, cloth plates, or inorganic silica plates that have low bending strength and cannot normally be used as shedding plates for concrete formwork. A base material such as a calcium acid plate or an ALC plate is provided, and on the outside of the base material, a lattice panel made of welded wire mesh, lath, etc. is tightened with iron wire is installed inside the lattice made of round materials assembled in a lattice shape. Concrete formwork characterized by the formwork on both sides assembled with clamping hardware. (2) If the raised lattice is round steel pipe, square-width steel pipe, C type, L
Claim No. 11 (claim 11) characterized in that it is made by assembling shaped steel such as molds, wood, etc. into a lattice shape using joining hardware such as clamps, wires, nails, welding, etc. Concrete formwork as described. (3) At least as part of the formwork on one side, in the part that contacts the concrete, the bending strength is weak and normally cannot be used as a weir for concrete formwork, such as plastic board, paper board, cloth board, or inorganic calcium silicate. A base material such as a board or ALC board is arranged, and exposed materials are assembled in a lattice shape on the outside. Inside the lattice, a composite of welded wire mesh, wire mesh such as lath, and waterproof paper, etc. is tightened with iron wire. Concrete formwork characterized by having shibata panels and assembling the formwork on both sides with fasteners. (4) If the protruding lattice is used for steel pipes such as round steel pipes, square steel pipes, C-type, L-shaped
Claim (3), characterized in that the material is assembled into a lattice shape by using metal molds such as molds or wood, etc., and using joining hardware such as clamp wires, nails, welding, etc. Concrete formwork as described.