JPH0860622A - Sound-absorption material - Google Patents
Sound-absorption materialInfo
- Publication number
- JPH0860622A JPH0860622A JP6222667A JP22266794A JPH0860622A JP H0860622 A JPH0860622 A JP H0860622A JP 6222667 A JP6222667 A JP 6222667A JP 22266794 A JP22266794 A JP 22266794A JP H0860622 A JPH0860622 A JP H0860622A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- sound absorbing
- absorbing material
- tile
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は吸音材に関し、詳しく
はタイル粉砕物を利用するセラミック吸音材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing material, and more particularly to a ceramic sound absorbing material utilizing a crushed tile material.
【０００２】[0002]
【従来の技術】従来、道路の路肩、あるいは鉄道線路の
脇等に設けられる防音壁として、板状のセラミック吸音
材が用いられている。このセラミック吸音材は、グラス
ウール製吸音材と比べ、吸音性および耐久性等に優れる
利点がある。しかし、従来のセラミック吸音材は、セラ
ミック吸音材用として焼成した磁器を粒状にし、無機バ
インダーにより結合したものであるため、グラスウール
製の吸音材と比べて高価となる問題がある。しかも、嵩
比重も１．４以上と重く、さらに、塵等により目詰まり
した場合の洗浄による吸音回復性も十分とは言いがたい
ため、改良が求められていた。2. Description of the Related Art Conventionally, a plate-shaped ceramic sound absorbing material has been used as a soundproof wall provided on a shoulder of a road or a side of a railroad track. This ceramic sound absorbing material has an advantage that it is superior in sound absorbing property and durability as compared with the sound absorbing material made of glass wool. However, the conventional ceramic sound absorbing material has a problem that it is more expensive than the sound absorbing material made of glass wool, because it is made by firing porcelain for ceramic sound absorbing material into particles and binding it with an inorganic binder. Moreover, the bulk specific gravity is as heavy as 1.4 or more, and further, the sound absorption recovery property by washing when it is clogged with dust or the like cannot be said to be sufficient, so that improvement has been demanded.
【０００３】[0003]
【発明が解決しようとする課題】そこで、この発明は前
記の点に鑑みなされたもので、第一には廃棄物を利用で
きる安価な吸音材の提供を目的とし、第二には前記の点
に加え、軽量で、しかも長期使用の際にも洗浄による吸
音回復が良好な吸音材の提供を目的とするものである。Therefore, the present invention has been made in view of the above-mentioned points, and the first object thereof is to provide an inexpensive sound-absorbing material which can utilize waste, and secondly the above-mentioned point. In addition to the above, an object of the present invention is to provide a sound absorbing material which is lightweight and has good sound absorbing recovery by washing even during long-term use.
【０００４】[0004]
【課題を解決するための手段】この発明は、粒度０．４
２５〜１．７ｍｍのタイル粉砕物粒子６０〜７０重量％
を、ガラス粉末、消石灰、水ガラス等からなる無機バイ
ンダー４０〜３０重量％により結合させた、嵩比重１．
３以上１．４未満の板状体からなる吸音材に係る。The present invention has a grain size of 0.4.
Tile ground material particles of 25 to 1.7 mm 60 to 70% by weight
Are combined with 40 to 30% by weight of an inorganic binder composed of glass powder, slaked lime, water glass, etc., and have a bulk specific gravity of 1.
The present invention relates to a sound absorbing material composed of a plate-like body having a size of 3 or more and less than 1.4.
【０００５】[0005]
【作用】この発明の吸音材は、タイル粉砕物粒子を主構
成材とするため、タイル製造時の不良品、あるいはタイ
ル運搬時、施工時等の際に発生するタイルの破損品から
なる産業廃棄物を粉砕利用でき、安価に製造することが
できる。しかも、産業廃棄物を再利用できるため、省資
源にも役立つ。The sound-absorbing material of the present invention is mainly composed of crushed tile particles, so that it is an industrial waste consisting of defective products during tile production, or damaged tiles generated during tile transportation, construction, etc. The product can be crushed and used, and can be manufactured at low cost. Moreover, since industrial waste can be reused, it is useful for resource saving.
【０００６】また、前記タイル粉砕物粒子を主構成材と
する吸音材について、その吸音性を種々検討したとこ
ろ、タイル粉砕物粒子の粒度が０．４２５〜１．７ｍｍ
の場合に、吸音性が最も良好になることが判明した。し
かも、吸音材の嵩比重が１．３以上１．４未満の場合に
吸音性が最も良好となることも判明した。加えて、吸音
材の嵩比重が１．４未満の場合には、従来の吸音材より
嵩比重が小さくなるため、吸音材を軽量にすることもで
きる。Further, when the sound absorbing property of the sound absorbing material mainly composed of the crushed tile particles was examined, the particle size of the crushed tile particles was 0.425 to 1.7 mm.
In the case of, it was found that the sound absorbing property was the best. Moreover, it was also found that the sound absorbing property was the best when the bulk specific gravity of the sound absorbing material was 1.3 or more and less than 1.4. In addition, when the bulk specific gravity of the sound absorbing material is less than 1.4, the bulk specific gravity becomes smaller than that of the conventional sound absorbing material, so that the sound absorbing material can be made lighter.
【０００７】さらに、長期使用等によって目詰まりした
吸音材を洗浄した場合の吸音性回復については、吸音材
の嵩比重が小さいほど良好なことも判明した。これは、
嵩比重が小さくなるほど吸音材の空隙率が大になって、
タイル粉砕物粒子間の塵等が洗浄除去され易くなると考
察される。Further, it was also found that the smaller the bulk specific gravity of the sound absorbing material is, the better the sound absorbing property is when the sound absorbing material clogged due to long-term use is washed. this is,
As the bulk specific gravity decreases, the porosity of the sound absorbing material increases,
It is considered that dust and the like between the tile crushed particles are easily washed and removed.
【０００８】また、前記吸音性に優れる吸音材を得る条
件、すなわち、粒度０．４２５〜１．７ｍｍのタイル粉
砕物粒子を無機バインダーで結合させて嵩比重１．３以
上１．４未満にした吸音材を得るための条件について種
々検討したところ、前記粒度範囲からなるタイル粉砕物
粒子を６０〜７０重量％、無機バインダーを４０〜３０
重量％にする必要があることも判明した。Further, the conditions for obtaining the above-mentioned sound absorbing material having excellent sound absorbing property, that is, particles of crushed tile having a particle size of 0.425 to 1.7 mm are combined with an inorganic binder to have a bulk specific gravity of 1.3 or more and less than 1.4. Various studies were conducted on the conditions for obtaining the sound absorbing material. As a result, 60 to 70% by weight of tile pulverized product particles having the above particle size range and 40 to 30% of an inorganic binder were used.
It has also been found that it is necessary to make it wt%.
【０００９】前記理由から、この発明においては、タイ
ル粉砕物粒子の粒度を０．４２５〜１．７ｍｍとし、そ
の粒度からなるタイル粉砕物粒子６０〜７０重量％を、
無機バインダー４０〜３０重量％により結合させて嵩比
重１．３以上１．４未満の吸音材としたのである。For the above reason, in the present invention, the particle size of the tile crushed material particles is 0.425 to 1.7 mm, and 60 to 70% by weight of the tile crushed material particles having the particle size is
40% to 30% by weight of an inorganic binder was combined to form a sound absorbing material having a bulk specific gravity of 1.3 or more and less than 1.4.
【００１０】[0010]
【実施例】以下この発明を実施例に基づき詳細に説明す
る。図１はこの発明の一実施例に係る吸音材の斜視図、
図２はこの発明の吸音材の構造の概略を示す拡大図、図
３はこの発明の実施例に係る吸音材と従来例について、
背後に空気層を設けて吸音率を測定した結果を示す図で
ある。EXAMPLES The present invention will be described in detail below based on examples. 1 is a perspective view of a sound absorbing material according to an embodiment of the present invention,
FIG. 2 is an enlarged view showing an outline of the structure of the sound absorbing material of the present invention, and FIG. 3 is a sound absorbing material according to an embodiment of the present invention and a conventional example.
It is a figure which shows the result of having provided an air layer behind and measured the sound absorption coefficient.
【００１１】この発明の吸音材１０は、粒度０．４２５
〜１．７ｍｍのタイル粉砕物粒子１１を、その表面に付
着した無機バインダー１２により結合させて、嵩比重
１．３以上１．４未満の板状体にしたものからなり、タ
イル粉砕物粒子１１間には空隙１３が形成されている。
なお、吸音材１０の寸法は、吸音材の用いられる場所、
吸音材が取りつけられる基体（図示せず）等によって適
宜決定される。The sound absorbing material 10 of the present invention has a particle size of 0.425.
The tile crushed product particles 11 are composed of pulverized tile crushed product particles 11 of ~ 1.7 mm bonded by an inorganic binder 12 attached to the surface thereof to form a plate-like body having a bulk specific gravity of 1.3 or more and less than 1.4. A void 13 is formed between them.
The dimensions of the sound absorbing material 10 are,
It is appropriately determined depending on the substrate (not shown) to which the sound absorbing material is attached.
【００１２】前記タイル粉砕物粒子１１は、この吸音材
１０の骨材となるもので、同一種類のタイルに限らず異
種、たとえば大きさ、材質、色等が異なるタイルを粉砕
したものであってもよい。また、粉砕するタイルは、良
品あるいは新品を用いる必要はなく、不良品、破損品が
主に用いられる。このタイル粉砕物粒子１１は、吸音材
１０の重量に対して６０〜７０重量％使用される。The crushed tile particles 11 are aggregates of the sound absorbing material 10. The crushed tile particles 11 are not limited to tiles of the same type but are crushed from different types such as tiles having different sizes, materials and colors. Good. Moreover, it is not necessary to use a good product or a new product as the tile to be crushed, and a defective product or a damaged product is mainly used. The tile pulverized material particles 11 are used in an amount of 60 to 70% by weight based on the weight of the sound absorbing material 10.
【００１３】一方、無機バインダー１２は、前記タイル
粉砕物粒子を結合させるためのもので、ガラス粉末、消
石灰、水ガラス等が用いられる。この無機バインダー１
２は、吸音材の重量に対して４０〜３０重量％使用さ
れ、前記タイル粉砕物粒子１１と併せて１００重量％と
されている。On the other hand, the inorganic binder 12 is for binding the crushed tile particles, and glass powder, slaked lime, water glass or the like is used. This inorganic binder 1
2 is used in an amount of 40 to 30% by weight based on the weight of the sound absorbing material, and is 100% by weight together with the tile crushed material particles 11.
【００１４】前記吸音材１０の成形は、前記タイル粉砕
物粒子６０〜７０重量％と無機バインダー４０〜３０重
量％とを混合し、型に充填して所定加圧力で成形し、所
定温度で焼成することによりなされる。その焼成時の圧
力を、９〜１１ｋｇｆ／ｃｍ2 とすることにより、吸音
材の嵩比重を１．３以上１．４未満にすることができ
る。また、前記焼成は、１０００℃〜１２００℃程度で
数十分間行う。それにより無機バインダーがタイル粉砕
物粒子の表面で溶融して、タイル粉砕物粒子同士を結合
させる。The sound absorbing material 10 is molded by mixing 60 to 70% by weight of the crushed tile particles and 40 to 30% by weight of an inorganic binder, filling the mold, molding at a predetermined pressure, and firing at a predetermined temperature. It is done by doing. By setting the pressure during firing to 9 to 11 kgf / cm 2 , the bulk specific gravity of the sound absorbing material can be 1.3 or more and less than 1.4. The firing is performed at about 1000 to 1200 ° C for several tens of minutes. As a result, the inorganic binder is melted on the surfaces of the tile crushed product particles, and the tile crushed product particles are bonded to each other.
【００１５】次に、この発明の吸音材の実施例につい
て、その製造方法とともに具体的に示す。まずタイルの
不良品または破損品を粉砕機により粉砕し、その粉砕物
をフルイにかけて粒度０．４２５〜１．７ｍｍのタイル
粉砕物粒子を選り分ける。次いで、その粒度０．４２５
〜１．７ｍｍのタイル粉砕物粒子と、無機バインダー
（ガラス粉末、消石灰および水ガラスからなる）を表１
に示す割合で混合し、その混合物を型に充填し、１０ｋ
ｇｆ／ｃｍ2 の圧力で加圧して３００×３００×２０ｍ
ｍの寸法に圧縮する。そして１１００℃で２５分間焼成
した後に冷却して、実施例１ないし３の吸音材を得た。
このようにして得た各実施例各５枚の吸音材について、
嵩比重および曲げ強度を測定した。その平均値は表１の
とおりである。なお、従来例についても表１に示す。Next, an embodiment of the sound absorbing material of the present invention will be specifically shown together with its manufacturing method. First, defective or damaged tiles are crushed by a crusher, and the crushed product is sieved to select tile crushed product particles having a particle size of 0.425 to 1.7 mm. Then the particle size 0.425
Table 1 shows the tile crushed substance particles of ~ 1.7 mm and the inorganic binder (consisting of glass powder, slaked lime and water glass).
Mix in the proportions shown in, fill the mixture in a mold, and
300 x 300 x 20 m by pressurizing with a pressure of gf / cm 2.
Compress to a size of m. Then, it was baked at 1100 ° C. for 25 minutes and then cooled to obtain the sound absorbing materials of Examples 1 to 3.
For each of the five sound absorbing materials of each example obtained in this way,
Bulk specific gravity and bending strength were measured. The average values are shown in Table 1. The conventional example is also shown in Table 1.
【００１６】[0016]
【表１】 [Table 1]
【００１７】さらに、前記実施例および従来例の吸音材
各５枚について、垂直入射法により吸音率を測定した。
表２はその測定結果を示すもので、吸音材単体の場合の
平均吸音率（５枚の吸音材の測定値の平均値）を示し、
表３は吸音材背後に５０ｍｍの空気層を設けた場合の平
均吸音率を示す。なお、図３は表３に示した実施例１な
いし３の平均吸音率の平均値と従来例の吸音率を図示し
たものである。Further, the sound absorption coefficient was measured by the vertical incidence method for each of the five sound absorbing materials of the above-mentioned example and the conventional example.
Table 2 shows the measurement results, and shows the average sound absorption coefficient (average value of the measured values of five sound absorbing materials) in the case of the sound absorbing material alone,
Table 3 shows the average sound absorption coefficient when a 50 mm air layer is provided behind the sound absorbing material. Note that FIG. 3 illustrates the average value of the average sound absorption coefficients of Examples 1 to 3 shown in Table 3 and the sound absorption coefficient of the conventional example.
【００１８】[0018]
【表２】 [Table 2]
【００１９】[0019]
【表３】 [Table 3]
【００２０】また、前記吸音率を測定した実施例および
従来例の吸音材について、洗浄による吸音性回復試験を
次のように行なった。すなわち、前記吸音率測定後の吸
音材を汚泥水に１昼夜浸した後汚泥水から取り出し、常
温放置した後にシャワーで洗浄し、乾燥後に吸音材の背
後に空気層を設けて吸音率を測定した。なお、前記汚泥
水は、粘土５０重量％、珪砂４０重量％、カーボン１０
重量％を、それらの３倍量の水で希釈したものを使用し
た。表４は吸音率の測定結果を示す。この表４において
「前」または「後」は汚泥に浸す前の測定結果と洗浄乾
燥後の測定結果を意味するもので、「前」の測定値は表
３と同じ値である。Further, a sound absorbing property recovery test by washing was carried out as follows for the sound absorbing materials of Examples and Conventional Examples whose sound absorption coefficient was measured. That is, the sound absorbing material after the sound absorbing coefficient measurement was immersed in sludge water for one day and then taken out from the sludge water, left at room temperature and washed with a shower, and after drying, an air layer was provided behind the sound absorbing material to measure the sound absorbing coefficient. . The sludge water is 50% by weight of clay, 40% by weight of silica sand, and 10% of carbon.
The weight% used was diluted with three times their amount of water. Table 4 shows the measurement results of the sound absorption coefficient. In Table 4, “before” or “after” means the measurement result before immersion in sludge and the measurement result after washing and drying, and the measurement value of “before” is the same value as in Table 3.
【００２１】[0021]
【表４】 [Table 4]
【００２２】前記測定結果から明らかなように、実施例
の吸音材は、従来品に比べて嵩比重が小さく軽量で、し
かも吸音性についても十分なもので、道路等に設置する
場合特に重要となる５００〜６００Ｈｚ付近の吸音性に
ついては優れた値を示す。さらに、洗浄による吸音性回
復も良好である。As is clear from the above measurement results, the sound absorbing material of the embodiment has a small bulk specific gravity and a light weight as compared with the conventional products, and has sufficient sound absorbing property, and is particularly important when installed on a road or the like. It shows an excellent value with respect to sound absorption near 500 to 600 Hz. Furthermore, the sound absorption property by washing is also good.
【００２３】[0023]
【発明の効果】以上図示し説明したように、この発明の
吸音材にあっては、産業廃棄物であるタイルの不良品あ
るいはタイルの破損品を使用できるため、安価になるの
みならず、省資源に役立つ効果がある。さらに、タイル
粉砕物粒子の粒度を０．４２５〜１．７ｍｍとし、その
粒度のタイル粉砕物粒子６０〜７０重量％を、無機バイ
ンダー４０〜３０重量％により結合させて嵩比重１．３
以上１．４未満としたため、従来品よりも軽量で取り扱
い易く、しかも吸音性が良好で、かつ長期使用による目
詰まり時には洗浄によって十分な吸音性を回復できる効
果がある。As shown and described above, in the sound absorbing material of the present invention, defective tiles or damaged tiles, which are industrial wastes, can be used. Has the effect of contributing to resources. Furthermore, the particle size of the tile crushed product particles is 0.425 to 1.7 mm, and 60 to 70% by weight of the tile crushed product particles having the particle size is combined by an inorganic binder of 40 to 30% by weight to obtain a bulk specific gravity of 1.3.
Since it is less than 1.4, it is lighter and easier to handle than conventional products, has good sound absorption, and has the effect of being able to recover sufficient sound absorption by washing when it becomes clogged due to long-term use.
【図１】この発明の一実施例に係る吸音材の斜視図であ
る。FIG. 1 is a perspective view of a sound absorbing material according to an embodiment of the present invention.
【図２】この発明の吸音材の構造の概略を示す拡大図で
ある。FIG. 2 is an enlarged view schematically showing the structure of the sound absorbing material of the present invention.
【図３】この発明の実施例に係る吸音材と従来例につい
て、背後に空気層を設けて吸音率を測定した結果を示す
図である。FIG. 3 is a diagram showing a result of measuring a sound absorption coefficient by providing an air layer behind the sound absorbing material according to the embodiment of the present invention and the conventional example.
１０ この発明の吸音材 １１ タイル粉砕物粒子 １２ 無機バインダー 10 Sound Absorbing Material of the Invention 11 Tile Crushed Particles 12 Inorganic Binder
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｅ０４Ｂ 1/86 Ｃ Ｇ１０Ｋ 11/16 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display area E04B 1/86 C G10K 11/16
Claims (1)
砕物粒子６０〜７０重量％を、ガラス粉末、消石灰、水
ガラス等からなる無機バインダー４０〜３０重量％によ
り結合させた、嵩比重１．３以上１．４未満の板状体か
らなる吸音材。1. Bulk specific gravity of 1 to 60% to 70% by weight of crushed tile particles having a particle size of 0.425 to 1.7 mm is combined with 40 to 30% by weight of an inorganic binder made of glass powder, slaked lime, water glass or the like. A sound-absorbing material composed of a plate-like body having a size of 3 or more and less than 1.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6222667A JP2835005B2 (en) | 1994-08-23 | 1994-08-23 | Sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6222667A JP2835005B2 (en) | 1994-08-23 | 1994-08-23 | Sound absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0860622A true JPH0860622A (en) | 1996-03-05 |
| JP2835005B2 JP2835005B2 (en) | 1998-12-14 |
Family
ID=16786047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6222667A Expired - Lifetime JP2835005B2 (en) | 1994-08-23 | 1994-08-23 | Sound absorbing material |
Country Status (1)
| Country | Link |
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| JP (1) | JP2835005B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167204A (en) * | 2014-08-07 | 2014-11-26 | 四川正升声学科技有限公司 | Particle board resonance sound absorption structure |
-
1994
- 1994-08-23 JP JP6222667A patent/JP2835005B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167204A (en) * | 2014-08-07 | 2014-11-26 | 四川正升声学科技有限公司 | Particle board resonance sound absorption structure |
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| Publication number | Publication date |
|---|---|
| JP2835005B2 (en) | 1998-12-14 |
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