JPS6033212Y2 - Stone-pasted FRC permanent formwork - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stone-clad FRC permanent formwork for forming a stone-clad decorative building with stone slabs provided on the surface.

□, ・゛Traditionally, on the surface of buildings and other structures,
Buildings with beautiful stone slabs have been created by pasting stone slabs on them, and it is possible to install them at the construction site by attaching a pull hardware to the back of the stone slab or providing a groove for engaging a T-bar on the side of the stone slab. They were joined together, placed in a formwork, and cement mortar was injected into the back side for construction.

However, the work of marking and locking the stone slabs in the formwork and injecting cement mortar on site is time-consuming and tends to unnecessarily complicate the work process.

In order to avoid this, it has been considered to form panels directly at the factory, but with some exceptions, the weight increases significantly, making transportation and storage difficult, and the panels are also heavy during construction. This involved the difficult task of installing.

For this reason, there has been a desire for a construction method for stone-pasted buildings that is easy to work on-site.

Tiles are similar to this, and methods such as the tile tip construction method and FRC formwork with tiles have also been devised, but tiles are small and have irregularities on the back for fixing, so they can be easily fixed to cement mortar. On the other hand, stone slabs are extremely large and heavy, and do not have irregularities on the back surface for adhesion, so even if FRC or cement mortar is applied to the back surface just like tiles, delamination is likely to occur, especially when thin FRC When supported by a layer, the pull metal material force fRc has the disadvantage that the stone plate tends to detach from the layer fRc, and has not been put to practical use.

The present invention aims to prevent such drawbacks and to create a lightweight stone-clad FRC permanent formwork that does not peel off. Stone plates 2 having pull hardware 1 on the back side are aligned, and metal strips 3 are attached to the pull hardware on the back side. A stone-pasted FR is provided with an FRC layer 5' in which the pull hardware and the metal bars are embedded with fiber reinforced cement (FRC).
It is a permanent formwork made of C.

The present invention will be explained based on the drawings.

FIG. 1 is a perspective view showing the manufacturing process of the right-sided FRC permanent formwork of the present invention, in which four handle hardware 1A, IB, and IC
, ID, two metal wires 3A and 3B are passed through the holes of each handle hardware of the stone plate 2.

Further, another metal wire 3C is arranged perpendicularly to the two metal wires (both are welded at each intersection point).

FIG. 2 is a front view showing the stone plates 2A, 2B, and 2C that are locked and aligned by the metal strips 3 in this manner.

Next, FRC is supplied to this back side, and the pull hardware and metal bars are buried in the FRC layer to form a permanent formwork consisting of the stone plates 2A, 2B, and 2C and the FRC layer 4 as shown in FIG. do.

In this case, the rising portions 5 are provided on the two opposing edges.
By forming A and 5B, the adjacent stone pasting FR
It is preferable because the permanent formwork made of C has good consistency and also has high strength.

The stone plate used for the formwork of the present invention may be any stone plate that is commonly used and has a pull hardware on the back side, and is generally 40 to 1
The size of about 0.00 cm square is used.

It suffices that at least one of these pull hardwares be provided on the stone plate, and that it can be easily engaged with the metal bars.

Preferably, two or more, especially four to six, are provided so that they can be engaged with the metal strips to provide good fixation and facilitate subsequent transportation.

Also, for engagement with the metal wire, it is preferable to have a structure in which a loop is formed and the metal wire is passed through the hole as shown in Fig. 1, as it is simple and has good engagement, but other types of metal fittings, etc. It is possible to use metal fittings with various engagement structures such as embedded in a stone plate and engaged with hooks or screw nuts.

The metal bars of the present invention can be normal reinforcing bars, stainless steel bars, etc., and can be arranged two-dimensionally as necessary.

Regarding the thickness direction, it is not preferable to arrange three-dimensionally over the entire surface due to the thickness of the FRC, but there are cases where three-dimensional arrangement is performed to form ribs and attachment parts at the ends or specific locations.

Furthermore, in order to enhance this reinforcing effect, it is preferable to embed a reinforcing metal material in at least one edge, and usually metal fittings are installed on two opposing edges, such as metal fittings that combine metal bars, H-type steel , L-shaped steel, etc. may be used.

Further, it is preferable to form a rising portion on this end side because it has good consistency with the adjacent permanent formwork and it is easy to form a framework for filling cement mortar.

Examples of FRC forming the FRC layer of the present invention include portland cement, alumina cement, magnesia cement, and gypsum mixed with 1 to 20 wt% of fibers such as glass fiber, steel fiber, carbon fiber, asbestos, rock wool, and threat fiber. , cementitious substances such as lime or mixtures thereof;
Or, if necessary, cementitious materials mixed with various aggregates such as sand, gravel, perlite, foamed resin beads, resins, Terrax, setting speed regulators, water reducers, dispersants, colorants, etc. can be used. , is formed to a thickness of about 10 to 5.

Among these, those containing 1 to 1 Qwt% of alkali-resistant glass fibers are preferred because they have high strength even with a small amount of mixing.

Further, this FRC may be applied by a known FRC supply method such as mixing the slurry in advance and pouring the slurry, or spraying the fiber and cementitious material slurry separately. It is preferable to supply by a spray method because it increases the strength.

4 and 5 are explanatory diagrams of other examples of the present invention,
In FIG. 4, a metal strip 13A is engaged with the pull hardware 11 on the back side of the stone plates 12A, 12B, and 12C.
3A, metal bars 13B are provided in the front-back direction of this figure, metal bars 13G projecting in the thickness direction, and metal bars 13D for reinforcing the rising portion are provided.

These metal bars are shown locked or secured to each other by welding, adhesive, fittings, or the like.

Figure 5 shows that when one FRC layer is applied 4° to the back of the stone plate, only the metal strips 13C protrude further from the back.
When used later as a permanent formwork, the bond between the mortar of the cementitious material supplied to the back surface and the FRC layer can be further strengthened.

In this way, it is also possible to leave some of the metal stripes protruding toward the back side.

Figure 6 shows the stone-clad FRC permanent formwork 27 of the present invention installed on the structural members 28A and 28B of a building, with a mortar filling space left on the back side and the formwork on the back side. A plate 29 is provided, and mortar of cementitious material is fed into this filling space and allowed to harden into one piece.

Although this example describes the construction of a vertical wall, the construction can be performed similarly on a horizontal surface or a slope.

In addition, it is preferable to provide the rising portions on two opposing edges as in this example, and if necessary, they may be provided on the third or fourth edge for ease of use in the subsequent cementitious material filling process. This is preferable because it makes the work easier.

In the above example, only an example of lining up three stone tablets was shown, but two
A large number of sheets may be arranged within the range where more than one sheet can be handled, and the required number of sheets may be arranged in the vertical and horizontal directions in FIG. 6.

With this structure, it is possible to obtain an extremely lightweight and strong stone-clad FRC permanent formwork in which the stone plates do not peel off or fall off, and it is an excellent product that can be manufactured with high productivity in a factory. It is.

In addition to the examples shown here, the present invention also allows for the creation of borders on each stone slab, the use of stone slabs of various shapes and colors, the addition of steps, the provision of openings in some areas, and the attachment of advertising, for example, to the surface side. Attach a similar mounting bracket.

Various applications are possible, such as attaching the permanent formwork in one place, arranging two pieces back to back to create a partition, and making the permanent formwork L-shaped or C-shaped.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams showing the production of the permanent formwork of the present invention. FIG. 4 and FIG. 5 are explanatory diagrams showing the manufacture of another example of the permanent formwork of the present invention. FIG. 6 is a construction explanatory diagram of the permanent formwork of the present invention. In addition, 1 is pull hardware, 2 is stone plate, 3 is metal wire, 4 is FRC
It is a layer.

Claims (1)

[Scope of utility model registration request] (1) Align the stone plates 2 having the handle hardware 1 on the back side,
A permanent formwork made of stone-pasted FRC is provided with a fiber-reinforced cement layer 4 in which metal bars 3 are engaged with the pull hardware on the back side and the pull hardware and the metal bars are buried in fiber-reinforced cement. (2) The stone-clad FRC permanent formwork as set forth in claim 1 of the utility model registration claim, in which rising portions 5 protruding toward the back surface are formed on two or more edges of the back surface.