JPH0430497B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a floor reinforcing plate.

[Conventional technology]

In recent years, with computerization and off-the-shelf automation, there has been a need to improve the strength of floor materials, and carbon fiber reinforced cement boards such as aluminum die-cast boards, steel boards, particle boards, and alkali-resistant glass-reinforced cement boards have been developed. There is.

[Problem that the invention seeks to solve]

However, in such conventional examples, the stiffness is too high, resulting in poor walking sensation, and when the load is too high, excessive deflection occurs if the Young's modulus is too small, causing the lower surface to creep or break. It has some problems.

The present invention was devised in view of such conventional problems, and aims to provide a floor reinforcing board that has excellent load resistance, workability, and walking feel.

[Means for solving problems]

In this invention, a plate-like structure is formed into a flat plate using fiber-reinforced cement, with the cement exposed on both upper and lower surfaces, and both upper and lower surfaces are formed flat. Further, a reinforcing body is buried near the bottom surface of the plate-like structure along the surface direction of the plate-like structure, and this reinforcing body is made of a knitted fabric of reinforcing fibers or a fiber-reinforced resin made of this and a resin. The structure is based on what was done.

[Effect]

A plate-like structure is formed into a flat plate with cement exposed on both the top and bottom, and does not have any special reinforcing material around or below, but because the cement is reinforced with fibers, it can be used for floors. The strength of the board is ensured. Therefore, it is possible to manufacture a floor board of any size according to the floor area, and the manufactured board can also be cut and used according to the floor area.

In addition, since the reinforcing body is buried near the bottom surface of the board, the tensile stress on the bottom surface of the board is increased.
Sufficient reinforcement is provided against the force that causes the plate to warp downward under load.

〔Example〕

The details of this invention will be explained below based on the drawings.

FIGS. 1 and 2 show an embodiment of a floor reinforcing plate according to the present invention.

In the figure, reference numeral 1 denotes a floor reinforcing plate, which includes a plate-like structure 2 made of alkali-resistant glass fiber reinforced cement, and a plate-like structure 2 at a depth of about 1 mm from the bottom surface of the plate-like structure 2. 2 and a reinforcing body 3 disposed along the surface direction.

The reinforcing body 3 is a mesh-like material made of woven carbon fibers, and is structured to have tensile strength.

In particular, the reinforcing body 3 is preferably disposed at a depth of about 1 mm or less from the lower surface of the plate-like structure 2, so that the reinforcing body 3 itself can be prevented from inducing breakage due to the notch effect.

An example of a method for manufacturing such a floor reinforcing plate will be described below.

First, a paste-like alkali-resistant glass fiber reinforced cement 6 is sprayed onto the bottom of the formwork 4 to a thickness of about 1 mm using a spray gun 5 (FIG. 3A).

Next, the reinforcement body 3 is laid on the sprayed alkali-resistant glass fiber reinforced cement 6 (Fig. 3B),
Further, the alkali-resistant glass fiber reinforcing cement 6 is similarly sprayed onto the reinforcing body 3 (FIG. 3C), and after curing, the mold is removed.

When such a floor reinforcing plate 1 is installed on the floor of a building to create a double floor structure, the floor reinforcing plate 1 is subjected to various loads and bends, but the tensile strength of the reinforcing body 3 Due to the stress, its bending strength is strengthened, and the plate 1
It prevents cracks from forming on the bottom surface and is durable.

Although the embodiments have been described above, the floor reinforcing plate 1 according to the present invention can be modified to a considerable extent depending on the gist of its configuration.

In the above embodiment, the reinforcing body 3 is made of a mesh-like body made of carbon fiber, but it may also be made of a mesh-like body made of glass fiber, thin metal wire, etc. It may be a vertical and horizontal collection of single wires.

Furthermore, in addition to the manufacturing method in the above examples,
It is also possible to integrate the plate-like structure 2 made of a cement-based composition and the reinforcing body 3, which have been formed in advance, by press working or roll working.

〔Effect of the invention〕

As explained above, the floor reinforcing board of the present invention is formed into a flat plate, with cement exposed on both the top and bottom surfaces, and does not have any special reinforcing material surrounding it or protruding from the bottom. Therefore, it is possible to manufacture floor boards of any size according to the floor area, and in some cases, the manufactured boards can be cut and used according to conditions such as floor area and shape. Since it can also be done, it has the advantage of being easy to manufacture and install.

In particular, in the case of this invention, although the cement is exposed and the board is made into a flat plate as described above, the cement is reinforced with fibers, increasing the overall strength. Since the reinforcing body is buried, the tensile stress on the lower surface of the plate is also increased, so that the plate is sufficiently reinforced against the force that causes the plate to warp downward due to a load. For this reason, even if it is a flat plate, it has the effect of ensuring strength as a floor plate against loads directed from above to below.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a floor reinforcing plate according to the present invention, FIG. 2 is a plan view showing a reinforcing body used in the same embodiment, and FIGS. 3A to 3C are ,
It is a sectional view showing an example of the manufacturing method of the reinforcing board for the same floor. 1... Floor reinforcing plate, 2... Plate-shaped structure, 3...
Reinforcement plate, 4...formwork, 6...alkali-resistant glass fiber reinforced cement.

Claims (1)

[Claims] 1. A plate-like structure is formed into a flat plate using fiber-reinforced cement by exposing the cement on both upper and lower surfaces and forming both upper and lower surfaces flat, and a plate-like structure is formed near the lower surface of the plate-like structure. A reinforcing board for a floor, characterized in that a reinforcing body is buried along the surface direction, and the reinforcing body is made of a knitted fabric of reinforcing fibers or a fiber reinforced resin made of the knitted fabric of reinforcing fibers and a resin.