JP2997662B2 - Sound absorbing material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sound absorbing member,
In particular, the present invention relates to a sound absorbing member suitable for a structural material of a building or the like that generates noise in a factory or the like, and a structural material of a soundproof wall such as a high-speed railway or a highway.

[0002]

2. Description of the Related Art Conventionally, various sound absorbing members have been put to practical use as structural materials for building structures that generate noise in factories and the like, and as structural materials for soundproof walls such as high-speed railways and highways.

FIG. 6 shows a sound absorbing member for a sound insulating wall which is most commonly used at present. The sound absorbing member for the sound insulating wall includes a surface plate 111 made of a metal plate having a louver structure subjected to rust prevention treatment, a sound absorbing material 112 made of glass wool whose surface is covered with a synthetic resin film 112a, and a space behind the sound absorbing material. A unit block 101 composed of a back plate 114 made of a rust-proofed metal plate material provided with an opening 115 and a frame member 113 made of a rust-proofed metal plate material that seals a space 115 is provided. Block 1
01 is inserted into and fixed to a rust-proof post such as H-shaped steel, or is fixed directly to a concrete side wall to form a soundproof wall.

[0004]

Incidentally, the sound absorbing member for the soundproof wall is exposed to extremely poor environments such as exhaust gas discharged from the traveling vehicle, vibrations from the traveling vehicle, rainwater, and the like. And high-pressure water nozzles require high weather resistance and durability. Also, in order to harmonize with the surrounding environment, it is necessary to consider the soundproof wall in terms of colors and the like.

However, as shown in FIG. 6, a conventional soundproof member used for a soundproof wall is a sound absorbing material 11 made of glass wool whose surface is covered with a synthetic resin film 112a.
2 is disposed so as to be in direct contact with the back surface of the front plate 111, so that the synthetic resin film 112a
Deterioration due to long-term use, and damage due to the vibration of the traveling vehicle or a large load acting during cleaning, if left unattended for a long time, glass wool will scatter, causing environmental destruction and consequently pollution. Had.

Also, a sound absorbing material 112 made of glass wool.
Is difficult to color, when a metal plate material having a large number of openings such as an expanded metal or a punched metal is used for the surface plate 111, the openings are colored in harmony with the surrounding environment. It was difficult.

A sound absorbing member made of glass wool is also used as a sound absorbing member used as a structural material of a building structure that generates noise in a factory or the like. In this case as well, the sound insulating member used for the above soundproof wall is used. Similar to the members, the glass wool has a problem of scattering and causing environmental destruction and eventually pollution.

[0008] In view of the above problems of the conventional sound absorbing member, the present invention has high weather resistance and durability, and can provide a color that is in harmony with the surrounding environment without destroying the surrounding environment. It is an object to provide a possible sound absorbing member.

[0009]

Means for Solving the Problems To achieve the above object, a sound absorbing member of the present invention is obtained by firing clay at 800 to 1200 ° C. and then pulverizing the clay into a mesh of 5 to 70 mesh. It is characterized by being kneaded with a binder and kneaded with a binder, compressed to a porosity of 30 to 70%, formed into a required shape, and fired at 800 to 1200 ° C. I do.

[0010] This sound absorbing member is made of clay of 800-1200.
After sintering at ℃, crushed to 5-70 mesh,
The fired refractory is pulverized to a mesh of 5 to 70 mesh, kneaded with a binder, and compressed to a porosity of 30 to 70% to form a desired shape, and 800 to 1200
Since it has a uniform composition fired at ℃, it has weather resistance and durability in addition to high sound absorption characteristics, and does not cause glass wool to be scattered unlike conventional sound absorbing members to cause environmental destruction and thus pollution.

In this case, the sound absorbing member can be colored by mixing a coloring material into the kneaded material.

Thus, the sound absorbing member can be provided with a color having excellent weather resistance in harmony with the surrounding environment.

Further, defective products such as bowls and tiles can be used as the fired refractory.

As a result, resources can be reused, and the manufacturing cost of the sound absorbing member can be reduced.

Further, a concave portion can be formed on the back surface of the sound absorbing member.

Thus, the sound absorbing characteristics of the sound absorbing member can be further improved.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the sound absorbing member of the present invention will be described below with reference to the drawings.

1 and 2 show a first embodiment of the sound absorbing member of the present invention. The sound absorbing member 1 is made of
After firing at 0 ° C., pulverized to 5-70 mesh 1
0 to 90 parts by weight and 10 to 90 parts by weight of the fired refractory obtained by pulverizing the fired refractory into a mesh of 5 to 70 mesh are kneaded with an appropriate amount of a binder, and are pressed with a press machine or the like so that the porosity is 30 to 70%. By compression, a square having a required thickness, more specifically, preferably, is formed into a substantially square or rectangular shape having a thickness of 20 to 100 mm and a side size of 250 to 1000 mm, and fired at 800 to 1200 ° C. Things.

In this case, defective products such as bowls and tiles can be used as the fired refractory, so that resources can be reused and the production cost of the sound absorbing member can be reduced. be able to. Further, as the binder, an inorganic binder such as bentonite, feldspar, lime, silica stone, pottery stone, or the like is used. In addition, the binder is further blended with a coloring material, for example, red husk, Turkish blue, pottery red, kaiheki, cobalt, etc., as appropriate, to give the sound absorbing member a color with excellent weather resistance in harmony with the surrounding environment. be able to.

This sound absorbing member 1 can be used as a soundproof wall for a high-speed railway, a highway 5 or the like by directly affixing it to the surface of a concrete side wall 2 as shown in FIG. Since it has a sufficient strength of about 50 kg / cm ^2, which is the same as that of a concrete block, it can be used as a structural material of a building or the like that generates noise.

When the sound absorbing member 1 is used by directly attaching it to the surface of the concrete side wall 2 as shown in FIG. 2, the concave portion 3 is formed on the surface of the concrete side wall 2. , It is desirable to form a space between the sound absorbing member 1 and the side wall 2, whereby the sound absorbing member 1
Can be further improved.

The sound absorbing member 1 is used by directly attaching it to the surface of a concrete side wall 2 at a construction site, and as shown in FIG.
The sound absorbing member 1 is assembled using a frame member 4 made of metal such as stainless steel or concrete, and a sound absorbing panel 10 is formed.
Can also be formed. The sound absorbing panel 10 can be built on a column such as an H-section steel at a construction site, thereby shortening a construction period.

FIGS. 4 and 5 show a second embodiment of the sound absorbing member of the present invention. The sound absorbing member 1 has a recess 1 on the back surface of the sound absorbing member 1 to form a space between the sound absorbing member 1 and the side wall 2.
The sound absorbing member 1 shown in FIG.
As shown in FIG. 5, a space can be formed between the sound absorbing member 1 and the side wall 2 by directly pasting and using the flat surface of the side wall 2 made of concrete. Can be further improved, and since there is no need to provide the concave portion 3 in the side wall 2, construction is facilitated. The other configuration of the sound absorbing member 1 of the present embodiment is the same as that of the sound absorbing member 1 of the first embodiment.

The sound absorbing member 1 of the present invention has a high porosity of 30 to 70% in any case. ５０50 kg / cm ² , which has sufficient strength similar to that of a concrete block. In addition to high sound absorption characteristics, it has weather resistance and durability, and glass wool is scattered like a conventional sound absorbing member. Since it does not cause environmental destruction and, consequently, pollution, it can be used for a wide range of applications as a structural material for building structures that generate noise in factories and the like, and a noise barrier for high-speed railways and highways. Things.

In order to obtain the effect of reducing noise in a wide range of frequencies while increasing the incidence rate of noise, sound-absorbing members having different porosity are laminated and used.
Sound absorption characteristics can be further improved. In this case, it is preferable to use a sound absorbing member having a higher porosity than the sound absorbing member on the back side of the sound absorbing member located on the noise incident side. Thereby, it is possible to obtain the effect of reducing noise in a wide range of frequencies while increasing the noise incidence rate.

[0026]

According to the sound absorbing member of the present invention, 80% of the clay is used.
After calcination at 0 to 1200 ° C., a material crushed to 5 to 70 mesh and a material crushed to 5 to 70 mesh for the fired refractory are kneaded with a binder so that the porosity is 30 to 70%. By compression, it is formed into the required shape,
Since it has a uniform composition fired at 0 to 1200 ° C., it has weather resistance and durability in addition to high sound absorbing properties, and glass wool scatters like conventional sound absorbing members, causing environmental destruction and consequently pollution. Therefore, it is possible to provide a sound absorbing member having extremely high safety.

Further, by coloring the kneaded material with a coloring material, the sound absorbing member can be provided with a color having excellent weather resistance in harmony with the surrounding environment.

In addition, by using a defective product such as a bowl or a tile as the fired refractory, resources can be reused, and the manufacturing cost of the sound absorbing member can be reduced.

By forming a concave portion on the back surface of the sound absorbing member, the sound absorbing characteristics of the sound absorbing member can be further improved.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a first embodiment of a sound absorbing member of the present invention.

FIG. 2 is an external perspective view showing the usage example.

FIG. 3 is an external perspective view showing a sound absorbing panel using the sound absorbing member of the present invention.

FIG. 4 shows a second embodiment of the sound absorbing member of the present invention, and (a).
Is a front view, and (b) is a cross-sectional view.

FIG. 5 is an external perspective view showing the usage example.

FIG. 6 is a sectional view showing a conventional sound absorbing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sound absorbing member 10 Sound absorbing panel 11 Concave part 2 Side wall 3 Concave part 4 Frame material 5 Road

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁷ Identification code FI E04B 1/82

Claims (4)

(57) [Claims] After sintering clay at 800 to 1200 ° C., pulverized to 5 to 70 mesh and kneaded refractory to 5 to 70 mesh are kneaded with a binder, and the porosity is 30%. A sound-absorbing member characterized by being formed into a required shape by compressing to about 70% and firing at 800 to 1200 ° C. 2. The sound absorbing member according to claim 1, wherein the kneaded material is colored by blending a coloring material. 3. The sound absorbing member according to claim 1, wherein a defective product such as a bowl or a tile is used as the fired refractory. 4. The sound absorbing member according to claim 1, wherein a concave portion is formed on a back surface.