JPH0565705A - Sound-absorbing and sound-shielding panel - Google Patents

Abstract

PURPOSE:To raise sound-absorbing and sound shielding effects and enhance decorativeness of sound-absorbing and sound-shielding panels by a method in which a sound absorber panel is molded integrally with a concrete supporter for the sound absorber panel and a concrete plate. CONSTITUTION:A sound absorber panel t1 is made up of any one of porous ceramic material and a porous metal material or by combining two or more of these. A concrete supporter tag and a concrete plate t3 are each made up by casting concrete into a latticed plastic formwork and by hardening it integrally. The panel t1 is formed integrally with the supporter t3 and the concrete plate t3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing / insulating plate. More specifically, the present invention relates to a new sound absorbing and sound insulating plate useful for imparting sound absorbing and sound insulating functions to civil engineering and building structures.

[0002]

[Prior art and its problems] Conventionally, highways, railways,
In a place where a noise source such as a factory is close to a residential area, a sound insulation wall made of various materials and structures is provided, and concrete is generally used for the sound insulation wall. Also, in areas where more sophisticated sound insulation measures are required, there is also used an absorption / sound insulation plate in which fibers such as glass wool are sandwiched by galvanized metal with slit holes and are integrated with the sound insulation plate. ..

In these conventional examples, the sound absorbing performance is generally not satisfied only by the sound insulating plate made of concrete. Therefore, it is generally desired to use a sound absorbing / insulating plate having both sound absorbing and sound insulating functions. It is rare. However, in reality, the conventional sound absorbing and sound insulating plates are expensive, and their appearance is monotonous and poor in design.

[0004] In addition, the building structure has a preference of each owner,
It is designed and constructed according to the concept, so
There is little tendency to construct noise insulation walls and take measures against noise in the entire area, and inevitably, the sound absorbing and sound insulating plates used up to now were often used as interior materials. This is because, as described above, the cost of the conventional sound absorbing / sound-insulating plate is high, the design is poor, and the performance is also problematic. In the whole region
This was because it was difficult to spread it widely.

Regarding performance, for example, the conventional one is
In order to obtain the sound absorption effect of low frequency sound, 4 on the back side of the sound absorbing plate.
A back space of about 5 to 150 mm is required, and in order to obtain this back space, it requires a lot of work such as attaching a wooden or stainless steel frame to the back side.
The cost of lumber was high. The present invention has been made in view of the above circumstances, solves the problems of the conventional sound absorbing / insulating plate, has excellent durability, can be used as a landscape material, and simplifies construction. The purpose is to provide a new low cost sound absorbing / insulating plate that can

[0006]

In order to solve the above-mentioned problems, the present invention is characterized in that a sound absorbing plate, a concrete-based support material for supporting the sound absorbing plate, and a concrete plate are integrally molded. Providing absorption and sound insulation boards. In addition, in the sound absorbing and sound insulating plate of the present invention, one of a porous ceramic and a porous metal, or a sound absorbing plate composed of a combination of two or more of these is used in advance in vacuum forming or press forming to form a grid pattern. It is also a preferred embodiment to use a concrete-based support material and a concrete plate which are integrated by pouring concrete into a plastic molded body molded in an arbitrary shape.

Hereinafter, the structure, operation and effect of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 is a perspective view illustrating the configuration of a sound absorbing / insulating plate of the present invention, and FIG. 2 is a side sectional view thereof. For example, as illustrated in FIG. 1 and FIG. 2, the sound absorbing / insulating plate of the present invention comprises a sound absorbing plate (thickness t ₁ ), a concrete support material (thickness t ₂ ), and a concrete plate (thickness t ₃ ). Form a pair. The concrete support material plays a role of securing a back space behind the sound absorbing board to form an air layer, and the concrete board plays a sound insulating function.

As the sound absorbing plate, a porous ceramic or a porous metal having excellent weather resistance and incombustibility, or a mixture or a mixture of two or more of them is used. be able to. Porous ceramic plate is a common ceramic raw material,
It can be produced by kneading clay or pigment and the like, foaming aggregate (such as shirasu and anti-fire stone), organic resin chips, fibers and the like, molding and firing. Alternatively, the ceramic raw material may be granulated and fired to have a diameter of 3 mm or less, kneaded with an organic binder, molded, and solidified to produce the same.

The porous metal may be in the form of granules or plates, and in the case of plates, powders of metal and / or alloys such as aluminum, stainless steel, copper, chips, and / or fibers. Etc. can be obtained by pressure forming.
It can also be obtained by kneading with an organic resin binder, molding and fixing. It is easy to combine these. A plurality of types of ceramic particles or metal particles, or ceramic particles and metal particles may be mixed or laminated. There are various other molding methods,
A porous ceramic plate and / or a porous metal plate, or a composite plate can be obtained by using any one of these methods or a method combining two or more kinds.

As shown in FIGS. 1 and 2, the concrete support material and the concrete board may be integrally formed of the same material, or may be integrally formed after being formed separately. As shown in FIGS. 1 and 2, it is preferable that the concrete-based support material have voids. However, depending on the material and the shape of the concrete-based support material, the voids may not be newly formed and, for example, fine pores of a porous plate may be formed. You may substitute by. Further, it may be replaced with resin mortar or the like. In any case, not only concrete but also a wide variety of materials such as mortar and resin mortar can be used for this concrete support material.

As shown in FIG. 3, for example, the concrete support material can be made into a lattice-shaped compact by casting concrete (32) on a plastic sheet compact (31) which has been preliminarily formed into a lattice. it can. Then, a concrete-based support material (3 comprising the plastic sheet molded body (31) and concrete (32).
3) and the concrete plate (34) may be integrally bonded to the sound absorbing plate (35).

The adhesion between the concrete support and the sound absorbing board can be ensured for a long period of time by using an adhesive and an anchor together. As for this concrete-based support material and concrete plate, first, as shown in FIG.
Can be manufactured by inserting and fixing the mold into a mold (42), pouring concrete (51) as shown in FIG. 5, curing and then removing from the mold as shown in FIG.

Even if the sound absorbing plate of the present invention is previously arranged on the bottom of the mold (42) and the plastic sheet molded body (41) is adhered and fixed to the sound absorbing plate, concrete (51) is placed. Good. In this case, the sound absorbing / insulating plate of the present invention can be manufactured immediately. At this time, the gap spacing S ₂ and / or W _{2 of} the support material shown in FIG.
The lattice portion thickness S ₁ and / or W _{1 of} the support material and the depth t ₂ of the support material can be appropriately selected depending on the performance, strength, weight and the like required for the sound absorbing and sound insulating plate. However, in order to maximize the strength of the sound absorbing plate, the adhesive strength between the sound absorbing plate and the concrete support, and the sound absorbing effect, S ₁ and / or W ₁ is 5 to 50 mm, S ₂ and / or W ₂ Is 50 ~
It is generally desirable that 500 mm and t ₂ be 25 to 125 mm.

The overall size of the sound absorbing and sound insulating plate of the present invention can be appropriately selected according to the application. The method of fixing the concrete support material and the sound absorbing plate can be appropriately selected according to the required quality including the above-mentioned adhesion. The sound absorbing board has
You may form the color tone and the pattern which were excellent in designability. Hereinafter, the examples will be described to more specifically describe the sound absorbing / insulating plate of the present invention, but the present invention is not limited to the following examples.

[0015]

EXAMPLES Example 1 In FIG. 1, W ₁ , S ₁ = 20 mm, W ₂ , S ₂ = 20
0 mm, t ₁ = 10 mm, t ₂ = 60 mm, t ₃ = 60 mm, and the overall dimensions were 1980 × 2000 × 130. Here, as a sound absorbing plate having a thickness of t ₁ ,
Ceramic particles of 0.5 to 3.0 mm were mixed with an organic binder, and the mixture was molded and solidified on an aluminum felt having a thickness of 3 mm so that the total thickness (t ₁ ) was 10 mm.

Then, as shown in FIG. 7, the obtained sound absorbing and sound insulating plate (71) was erected on the H steel (72) to form an enclosure. And the ground 0 in the center of the measuring machine
They were installed at m and 1 m, and the noise generated from outside the enclosure was measured. Further, concrete panels of 1980 × 2000 × 130 mm were arranged in the same manner, and the noise levels were comparatively measured. FIG. 8 shows the result. As can be seen from the data of FIG. 8 (A indicates the height of the sound receiving point is 0 m and B is 1 m), the sound absorbing / insulating plate of the present invention is compared with the concrete sound insulating plate. When using, a sound insulation effect of 2 to 13 dB was further obtained. Example 2 With respect to a sound absorbing plate (thickness t ₁ ) having the same dimensions as in Example 1,
The sound insulation performance is investigated by changing the type, such as composite plate (a) of ceramic particle layer (7 mm) and aluminum felt (3 mm), ceramic particle layer (10 mm) only (b), aluminum felt (3 mm) only (c). It was Here, the height of the sound receiving point was ± 0 m. As shown in the measurement results in FIG. 9, the characteristics differ depending on the type of sound absorbing plate. However, no matter which sound absorbing material is used, in the case of the sound absorbing / insulating plate of the present invention, only the concrete plate is used. 2 ~ 13dB better than sound insulation board
The result is that the sound insulation effect is excellent. Example 3 While applying centrifugal force to a centrifugal mold for concrete, t
_A mixture of ceramic particles of 0.5 to 3 mm and a resin binder was kneaded so as to be ₁ = 10 mm and spread. After solidification, S
₁ = 20 mm, S ₂ = 240 mm, W ₁ = 17 mm, W ₂ = 2
A plastic sheet having a thickness of 2 mm, which was molded to have a thickness of 40 mm and t ₂ = 90 mm, was adhered and fixed to the ceramic particle layer, and then concrete was poured while applying a centrifugal force to perform molding and curing.

After the concrete was solidified, it was removed from the mold to obtain concrete columns shown in FIGS. 10 and 11. When two concrete sound absorbing columns of the present invention produced by the above method were installed in a lobby of a hotel fully covered with marble, no reverberation was heard and a calm space could be obtained. Moreover, because the ceramic particles of several colors were mixed and molded so as to have a marble tone, it was possible to obtain a concrete column that matched the surrounding design very well.

[0018]

As described in detail above, the sound absorbing / insulating plate of the present invention can provide excellent sound absorbing and sound insulating effects, and can also provide a building / civil engineering material excellent in design. It has become possible to provide a molded product that is far superior in terms of workability and economy compared to conventional sound insulation plates and sound absorption plates.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

2 is a cross-sectional view of the example of FIG.

FIG. 3 is a sectional view showing an example using a plastic sheet molded body.

[Figure 4]

[Figure 5]

FIG. 6 is a perspective view showing a manufacturing process of the example of FIG.

FIG. 7 is a perspective view showing a wall surface configuration for sound insulation performance measurement.

FIG. 8 is a measurement diagram showing sound insulation performance.

FIG. 9 is a measurement diagram showing sound insulation performance.

[Figure 10]

FIG. 11 is a side view and a plan view illustrating a columnar object of the present invention.

[Explanation of symbols]

 31 Plastic Sheet Molded Body 32 Concrete 33 Concrete Support Material 34 Concrete Plate 35 Sound Absorbing Board 41 Plastic Sheet Molded Body 42 Formwork 51 Concrete

Claims (3)

[Claims] 1. A sound-absorption / sound-insulation plate, characterized in that the sound-absorption plate, a concrete-based support material that supports the sound-absorption plate, and the concrete plate are integrally molded. 2. The sound absorbing / insulating plate according to claim 1, wherein the sound absorbing plate is made of porous ceramic, porous metal, or a combination of two or more of these. 3. The sound absorbing and sound insulating board according to claim 1, wherein the concrete-based support material and the concrete board are formed by casting concrete into a plastic molding preliminarily formed in a lattice shape, molding, and solidifying the concrete.