JPS5923963B2 - Forming method of GRC box panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a glass fiber reinforced cement (hereinafter simply referred to as GRe).

) relates to a method for forming box-like panel products.

Recently, various methods of forming GRC products by mixing glass fibers in cement mortar have been proposed, but the GR
When molding a box-shaped panel product, especially a hollow box-shaped panel, from C, conventionally, each half of the panel is molded separately, and after curing, the two halves are joined together with bolts, or Immediately after the two halves are individually molded and still in a flexible state, one is turned over onto the other and the two halves are usually bonded and hardened together.

However, the former method tends to cause errors in the bolt holes and their insert positions, as well as gaps between the joint surfaces of the two halves, making it difficult to maintain the accuracy of the mating, including the finishing of the joint surfaces. There are problems such as the need to backfill the bolt holes.

On the other hand, in the latter method, the panel product is joined by being turned inside out while it is still flexible immediately after molding, so it is likely to fall off the formwork at that time, and a gap is created between the formwork and the panel product, causing damage to the product surface. When a concave-convex pattern is added to a surface, it frequently happens that the decorative pattern is disturbed.

In any case, it is clear that the conventional methods are inferior in workability and cannot produce high-quality panel products.

The present invention completely solves these problems in a very simple manner, and its specific configuration will be explained with reference to the drawings in FIGS. 1 to 3.

A is the target GRC hollow box-shaped panel product,
For example, it is planned to be used as a decorative wall near the entrance of a building or as an internal partition wall.

This panel product A consists of a pair of shapes and depths that are the same or different from each other, and each half is molded in 1°2 halves, and the surface thereof has a concavo-convex pattern 3 as illustrated in Fig. 4. It may also be shaped.

Forming methods include the so-called premix press method, in which a mixture of glass fiber and cement mortar is cast into a mold;
A direct spray method in which the glass fibers and cement mortar are simultaneously sprayed onto the formwork, or any other method may be used.

In the present invention, when forming one side half 1 of the above-mentioned panel product A, the required number of stud bolts, screws, and other binding hardware 5 are implanted in advance on the joint surface 4, and the forming process is performed while curing. Let it harden.

Therefore, as shown in FIG. 2, about half of the binding hardware 5 protrudes from the joint surface 4 of the hardened half-half 1.

On the other hand, the remaining half 2, which is paired with this, is molded in the formwork 6, and immediately afterwards, while still in a flexible state, a second half is placed on top of it.
As shown by the arrow in the figure (the above-mentioned cured half half 1 is placed upside down, the bonding surfaces 4 and 7 are brought into alignment, and the two halves are bonded together and cured so as to form a sealed cavity S inside).

By doing so, the joint surfaces 4 and 7 of both halves 1 and 2 are brought into close contact with each other without any gaps due to the flexibility of one of them, and the binding hardware 5 that was previously insert-molded is also forced into the flexible one half 2 (
It is naturally embedded, and as a result of its hardening, the two halves 1 and 2 are completely and firmly connected and integrated as shown in FIG.

In this case, in order to increase the bonding force due to friction, it is preferable that the surface of the binding hardware 50 is roughened with concave and convex surfaces such as screws, and that both ends of the binding hardware 5 are provided with heads to prevent removal. .

In addition, the number of implanted pieces is increased or decreased according to changes in the size of the panel product A, but if the panel product A is large, the required number of reinforcements can be added to partition the cavity S from its inner surface. Ribs (not shown) may also be integrally stretched and molded.

If it is necessary to join these reinforcing lips together, it is also possible to implant binding hardware 5 here in the same manner as described above.

Furthermore, in the illustrated example, one half 171 is cured first! l-1
For example, the bonding surfaces 4 and 7 are placed on one side half 2 which remains flexible, so to speak, from directly above, that is, the bonding surfaces 4 and 7 are superimposed in a horizontal state.
Of course, it is also possible to overlap them while keeping them tilted at a constant angle.

In the cavity S of the panel product A, additional foamed polystyrene, lightweight concrete, or the like may be filled during molding.

As described above, in the present invention, as a GRC box-shaped panel product acid forming method, one side half 1 which has been molded and hardened first is bound while the remaining one side half 2 is in a flexible state immediately after molding. Since they are joined and integrated with each other via the hardware 5, one end of the binding hardware 5 remains fixed and held in a stable state, while the other end is not forced (buried) into the flexible half-half 2. .

Here, a panel product A'Y in which both halves 1 and 2 are firmly connected and integrated through the binding hardware 5 can be easily obtained, and the positioning accuracy of the binding hardware as in the conventional method mentioned at the beginning is There is no need for any rigor.

Furthermore, since the other half 1 is overlapped with the other half 2 while the other half 2 is in a flexible state, even if there is some unevenness in the finish of the joint surfaces 4 and 7, they will be perfectly aligned with each other without any gaps. This type of panel product can be obtained with high quality by being closely integrated with the panel.

And the method for doing so is extremely simple.

This can be said to be a practical invention as it is effective in reducing costs by significantly shortening the manufacturing process and providing products with excellent quality.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the intended box-shaped panel product, Figure 2 is a partial perspective view showing how each half of the panel is formed, Figure 3 is an enlarged sectional view of the finished product, and Figure 4. 3 is a sectional view of a modification corresponding to FIG. 3. FIG. 1... Box-shaped panel product, 1, 2... Half part, Total... Uneven pattern, 4.7... Joint surface, 5... ...Binding hardware.

Claims (1)

[Scope of Claims] 1 One half of the box-shaped panel is molded and hardened with the binding hardware implanted, while the remaining half half is molded, and immediately after that, the above hardening is performed while it is in a flexible state. A method for forming a GRC box-shaped panel, which is characterized by joining two half halves of one side together and then curing them integrally through the binding hardware. 2. The method for forming a GRC box-shaped panel according to claim 1, wherein the box-shaped panel has a surface provided with an uneven pattern.