JPS591861B2 - wall structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wall structure constructed from steel fiber-containing concrete plates and a gypsum facing.

In recent years, there has been an increasing demand for walls that are lightweight, inexpensive, and have excellent fire resistance, sound insulation, and workability for apartment complexes, hotels, office buildings, and the like.

However, conventional walls for the purpose of fireproofing and sound insulation, such as (1) those made of RC structure or normal PC construction, are heavy and not lightweight, and it is impossible to retrofit them; (2) walls made of plaster A hollow double wall with a multilayer structure of boards or gypsum calcium silicate plates is lightweight, but construction costs are relatively high. (Three-unit concrete block foundation with gypsum plaster is relatively cheap, but construction costs are relatively high.) (4) A.
Since the LC board is a brittle material, there are many losses due to corner chips, chips or cracks around equipment piping holes, etc. Each has its advantages and disadvantages, and no definitive solution has yet been found.

The present invention has been proposed in view of the above circumstances, and it is an object of the present invention to provide a wall structure with extremely excellent fire resistance and sound insulation properties.

Next, this invention will be explained with reference to the drawings. In Fig. 1, 1 is a steel fiber concrete board (abbreviated as SFRC board) mixed with steel fibers.
2 is a surface material made of gypsum board.

These 5FRC boards 1 and the surface material 2 are attached using adhesive, nails, or the like.

In order to form the 5FRC board 1, it is preferable to use one that satisfies the following items.

○Shape and dimensions of steel fiber: 0.1 to 0.5
mA, has a circular, half-moon, rectangular, etc. cross-sectional shape, and has a length of 1
5-40 ○Steel fiber mixing rate 2 0.2-6.0% (volume) Preferably 0.3-2.0 ratio (volume) Density of C8FRC board: 0.7-1.8 to 7/m3C3FRC Board thickness:
10~60m ○Pearlite mixing rate: bulk volume (cement: barley
g) 1:1 to 1:1.6 OAE agent mixing ratio: (weight ratio) 0.04 to cement The reason why such a limitation is necessary is as follows.

First, there is the issue of fire resistance (there is no risk of explosion or other problems).

) Secondly, it is required to have excellent workability in nailing, cutting, etc.

Moreover, the thickness of the gypsum board is preferably 9 to 15 mm.

This is because performance of D-40 or higher is required in terms of two-hour fire resistance and sound insulation.

An example of the composition of the 5FRC board is shown in Table 1.

Table 2 shows a comparison of the mechanical properties of steel fiber concrete and plain concrete.

Furthermore, the bending strength-displacement curves of these concretes are shown in FIG.

From these points, when compared to plain concrete, 5FRC has: ■ Tensile strength and bending strength are improved by about twice, ■ Compressive strength is not particularly improved, but compressive elastic modulus is 40 factors higher, and 0 bending toughness is increased by a factor of 40. Significantly improved.

By the way, when constructing a wall using a 5FRC board and a surface material, only a composite board having the structure shown in FIG. 1 is sufficient, as shown in FIGS. 5 and 6, considering only fire resistance.

However, the sound transmission loss (dB) does not pass the standards stipulated by the Building Standards Act.

Therefore, in order to satisfy fire resistance and sound insulation performance at the same time, as shown in Fig. 2, seven composite boards should be constructed with a predetermined hollow space 3, or as shown in Fig. 3, It is preferable to fill the gap with a sound insulating material such as rock wool 4.

Regarding the fire resistance of the wall body shown in FIG. 2, the test results conducted according to JIS1304 are shown in FIGS. 7 and 8.

Furthermore, as shown in FIG. 9, it is found that the wall bodies shown in FIGS. 2 and 3 have excellent sound insulation properties.

These figures also illustrate the ALC board and the like.

In constructing the wall, as shown in FIGS. 10 and 11, the base runner 10 is installed on the slab, the ceiling runners 11 are fixed under the beams with anchors, and then the studs 12 are installed.

This stud 120 is fixed on both sides with mounting hardware such as tapping screws 13 or elastic clips (not shown).

For this fixing, as shown in detail in FIG.
A gap 14 of about a few inches is maintained between the protrusions 1a formed on the plate 1, and a gap 14 is maintained with the 5FRC plate 1 on the other side so that the protrusions 1b and the protrusions 1a are arranged in a staggered manner on the other side. Do it like this.

This can prevent the vibration of the 5FRC board 1 in →■ from being transmitted to the 5FRC board 1 on the other side via the studs 12, leading to improved sound insulation.

Thereafter, surface materials 2, 2 are fixed to the surfaces of these 5 FRC boards 1, 1 with nails or adhesive.

The 5FRC board 1 can be nailed, and has the advantage that exterior parts can be easily attached to it.

15 is a spacer, 16 is a filler such as pearlite mortar or rock wool, and 1L is a filler made of putty or caulking material.

Note that the surface of the surface material 2 can of course be painted or covered with cloth, and although the above-mentioned wall body is particularly effective as a partition wall, it may also be an external wall.

Furthermore, the above-mentioned composite board can also be used for covering columns.

The space between 5FRC boards 1.1 or the space within the studs is
Equipment wiring and piping installation is easy.

As described above, in this invention, the walls are made of 5FRC boards and the surface material made of gypsum and are arranged at intervals, so that the following effects are brought about.

I5FRC board is extremely superior to plain concrete in various mechanical properties, and is also excellent in fire resistance, sound insulation, and lightweight.

Also, it can be nailed, etc., and retrofitting is easy.

2. The surface material improves fire resistance and also greatly contributes to sound insulation.

By combining the 35FRC board and the surface material, the mechanical properties, fire resistance, and sound insulation properties of each individual board can be fully exhibited, and the required properties can be satisfied for the first time.

Also, the workability is extremely good.

4. Since the walls are spaced a certain distance apart,
It has excellent sound insulation properties and can be filled with rock wool or the like between the layers, making it extremely suitable for areas where sound insulation is particularly required, such as in apartment complexes.

[Brief explanation of the drawing]

゛Figure 1 is a cross-sectional view of a single composite board, Figures 2 and 3 are cross-sectional views showing examples of construction, Figure 4 is a diagram showing the strength of steel fiber mixed concrete plates in comparison with plain mortar, 5 to 8 are diagrams showing fire resistance performance, FIGS. 9 and 10 are diagrams showing sound insulation performance, and FIGS. 11 and 12 are sectional views of examples of wall configurations. 1...Steel fiber concrete board, 1
a, 1b...Protrusion, 2...Surface material, 3...Middle space, 10...Base runner, 11...Sealing Runner, 12.
... Stud, 13 ... Screw, 14 ...
...Gap, 15...Spacer, 16...
...Pearlite mortar, 17... Packing material.

Claims (1)

[Scope of Claims] 1. A wall structure comprising a built-in wall consisting of a steel fiber concrete plate mixed with steel fibers and a wall body serving as a surface material made of plaster placed on the surface thereof, spaced at a predetermined interval. . 2. The wall structure according to claim 1, wherein a fibrous sound insulating material is provided between the wall bodies.