JPH0470456B2 - - Google Patents
Info
- Publication number
- JPH0470456B2 JPH0470456B2 JP60070646A JP7064685A JPH0470456B2 JP H0470456 B2 JPH0470456 B2 JP H0470456B2 JP 60070646 A JP60070646 A JP 60070646A JP 7064685 A JP7064685 A JP 7064685A JP H0470456 B2 JPH0470456 B2 JP H0470456B2
- Authority
- JP
- Japan
- Prior art keywords
- sound insulation
- gypsum board
- areal density
- gypsum
- range
- 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.)
- Expired - Lifetime
Links
- 229910052602 gypsum Inorganic materials 0.000 claims description 57
- 239000010440 gypsum Substances 0.000 claims description 57
- 238000009413 insulation Methods 0.000 claims description 47
- 239000000463 material Substances 0.000 claims description 25
- 239000000945 filler Substances 0.000 claims description 8
- 239000002657 fibrous material Substances 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 230000007547 defect Effects 0.000 description 12
- 230000007812 deficiency Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000006735 deficit Effects 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 239000004566 building material Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- -1 Preferably Substances 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は遮音性能にすぐれた石こうボード構成
体に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a gypsum board structure with excellent sound insulation performance.
（従来の技術）
近年、建材に対する要求が多様化している。省
資源、省エネルギー等の経済性の観点から断熱性
能が、また、安全性の観点からは耐火性能が求め
られているが、居住環境の改善の為に遮音性能が
特に強く求められるに至つている。また、建築コ
ストの低減、居住空間の拡大等の目的で、一般に
建材の軽量化や薄型化が促進されている。この様
な状況にあつて建材としての石こうボードは、こ
れ等の新たな要求に良く合致していることより、
極めて大量にまた広範囲に用いられるに至つてい
る。また、これ等の要求が高度化するにつれて、
その目的に合わせて、より高性能の石こうボード
も開発され生産されている。しかし、最近の騒音
公害の深刻化、居住者の静穏への欲求の高まりに
対し、既存の石こうボードでは、必ずしも対応で
きない事態が頻発するに至つている。(Prior Art) In recent years, demands on building materials have been diversifying. Insulation performance is required from an economic standpoint such as resource and energy conservation, and fire resistance performance is required from a safety standpoint, but sound insulation performance is particularly strongly required to improve the living environment. . Furthermore, in order to reduce construction costs and expand living space, building materials are generally becoming lighter and thinner. Under these circumstances, gypsum board as a building material is well suited to meet these new requirements.
It has come to be used in extremely large quantities and over a wide range of areas. Additionally, as these demands become more sophisticated,
Higher performance gypsum boards have also been developed and produced for this purpose. However, with the recent worsening of noise pollution and the increasing desire of residents for peace and quiet, existing gypsum boards are increasingly unable to cope with the situation.
即ち、石こうボードを単独で、または複合し
て、各種建築物に適用した際に石こうボード固有
の、または例えば壁体を構成した場合の壁構造全
体の特性としての遮音欠損の出現が、遮音上の重
大な問題として今日クローズアツプされている。 In other words, when gypsum boards are applied alone or in combination to various buildings, sound insulation defects may occur, either due to the gypsum board itself or as a characteristic of the entire wall structure when it is used as a wall. This issue is being highlighted today as a serious issue.
一般に、材料または構造体の遮音性能は、総重
量や厚さ等によつてほぼ規定され、これ等を増大
させれば、質量則の原理によりその遮音性能も全
般的には向上する。石こうボードの高密度化や厚
肉化による重量化は、この意味で一定の効果を有
している。しかしながら、先に述べた遮音欠損は
今だに殆んど改善されるに至つていない。ここに
遮音欠損とは、板材のコインシデンス効果や、構
造体全体の共鳴によつて、特定周波数領域の遮音
性能が著しく低下する現象である。この遮音欠損
の出現領域が、例えば125〜4000Hzと言つた主要
可聴音域と重なると、その音域の透過音によつて
様々な騒音トラブルが生じ、例えば居住環境を著
しく悪くしている。 In general, the sound insulation performance of a material or structure is approximately determined by the total weight, thickness, etc., and if these are increased, the sound insulation performance will generally improve based on the principle of the mass law. In this sense, increasing the weight of gypsum boards by increasing their density and thickness has a certain effect. However, the above-mentioned sound insulation deficiency has not been improved to date. Here, the sound insulation deficiency is a phenomenon in which the sound insulation performance in a specific frequency range is significantly reduced due to the coincidence effect of the plate materials or the resonance of the entire structure. When the area where this sound insulation defect appears overlaps with the main audible sound range, such as 125 to 4000 Hz, various noise problems occur due to the transmitted sound in that sound range, for example, significantly worsening the living environment.
コンクリート集合住宅に広く採用されている、
コンクリート壁素画に接着材を介して表面材とし
て石こうボードを付設してなる所謂GL工法壁に
おいて、200Hz付近の低音域に構造的要因による
共鳴が、また、2000〜4000Hz付近の高音域に石こ
うボード（表面材）のコインシデンス効果が生
じ、それぞれ著しい遮音欠損を生じさせている。
このため、施工性、経済性等に極めて優れた工法
として普及しつつあつたが、近時その施工量が減
少の傾向にある。 Widely used in concrete housing complexes,
In the so-called GL method wall, which is made by attaching gypsum board as a surface material to a concrete wall drawing via an adhesive, there is resonance due to structural factors in the low frequency range around 200Hz, and resonance due to structural factors in the high frequency range around 2000 to 4000Hz. Coincidence effects of the boards (surface materials) occur, resulting in significant sound insulation defects.
For this reason, it has become popular as a construction method with excellent workability and economy, but recently the amount of construction has been on the decline.
この遮音欠損に対し、材料や壁体の重量化を図
つたり、中空層を拡大したりして遮音欠損出現周
波数を主要可聴域外に移動させる方法や構成材料
の制振化を図つたり、表面材の固定方法を変更し
たりして共振を制御する方法が考えられ、実施さ
れたが、いずれも改善されるに至らなかつた。 To deal with this sound insulation defect, we have tried to increase the weight of the materials and walls, expand the hollow layer to move the frequency at which the sound insulation defect appears outside the main audible range, and dampen the vibration of the constituent materials. Methods of controlling resonance by changing the method of fixing the surface material have been considered and implemented, but none of them resulted in an improvement.
近時のステレオ、カラオケ、各種の大型モータ
ー、コンプレツサー、フアン等の高出力騒音源の
著増につれ、既存の対策では十分な対応が図れな
いことより、前記した遮音欠損の改善が強く要望
されている。 In recent years, as the number of high-output noise sources such as stereos, karaoke machines, various large motors, compressors, fans, etc. has increased significantly, existing countermeasures are not sufficient to address the problem, and there is a strong demand for improvement of the sound insulation deficiency described above. There is.
（発明が解決しようとする問題点）
前記GL工法壁に表面材として用いられている
石こうボードは焼石こうに水、パルプ、発泡剤等
を加え混合したスラリーをじようぶな紙の間には
さみロール掛けして成型されたものであるが、軽
量性、熱および水分に対する非伸縮性、耐火性、
（切削）加工性等に優れていることよりコンクリ
ート集合住宅壁面の表面材（前記したGL工法も
含め）や各種間仕切壁の面材等として多用されて
いる。(Problems to be Solved by the Invention) The gypsum board used as a surface material on the walls using the GL method is made by rolling a slurry of calcined gypsum mixed with water, pulp, a foaming agent, etc. between sheets of paper. Although it is hung and molded, it is lightweight, non-stretchable against heat and moisture, fire resistant,
Due to its excellent machinability (cutting), it is often used as a surface material for walls of concrete apartment complexes (including the GL method described above) and as a facing material for various partition walls.
石こうボードは、通例７mm程度から10数mm程度
で用いられているが、特に遮音性が求められる用
途には何枚かのボードを積層するか数10mmの特製
グレードのものが用いられている。しかしなが
ら、石こうボードからなる前記壁面の表面材や各
種間仕切壁の面材等はいずれもほぼ同じ面密度か
らなる石こうボードを連設した構成体からなり、
従つて、質量則にもとづく遮音効果は期待できて
も前記した遮音欠損は何ら改善されてはいない。 Gypsum boards are usually used in thicknesses of about 7 mm to 10-odd mm, but for applications where sound insulation is particularly required, several boards are laminated or special grades of several tens of mm are used. However, the surface material of the wall made of gypsum board and the facing material of various partition walls are all made of a structure in which gypsum boards made of approximately the same surface density are connected,
Therefore, although a sound insulation effect based on the mass law can be expected, the above-mentioned sound insulation deficiency has not been improved at all.
本発明は前記石こうボードの特徴を減殺せずに
前記遮音欠損を著しく改善した石こうボードから
なる遮音構成体に係る。 The present invention relates to a sound insulation structure made of a gypsum board that significantly improves the sound insulation deficiency without reducing the characteristics of the gypsum board.
（問題点を解決するための手段）
すなわち、複数の石こうボードを連設して構成
された構成体であつて、最大面密度を有する前記
石こうボードの面密度と最小面密度を有する前記
石こうボードの面密度の比が1.2以上として構成
される遮音構成体に係る。(Means for Solving the Problem) That is, it is a structure constituted by connecting a plurality of gypsum boards, and the gypsum board has a maximum areal density and a minimum areal density. It pertains to a sound insulation structure configured such that the ratio of areal density of is 1.2 or more.
石こうボードは、曲げ剛性が比較的小さく、そ
のため、面密度の異なる複数の石こうボードから
構成することにより前記した遮音欠損が改善され
ることを見出し本発明に至つたものであり、さら
に、石こうボードの製造工程で充填材を混入して
もその曲げ剛性の変化が比較的小さいために欠損
周波数の分散化による遮音欠損の改善には極めて
好都合であることもわかつた。すなわち、面密度
の差異を主として考慮すればよいからである。 Gypsum boards have relatively low bending rigidity, so the inventors discovered that the above-mentioned sound insulation deficiency could be improved by constructing a plurality of gypsum boards with different areal densities, leading to the present invention. It was also found that even if a filler is mixed in during the manufacturing process, the change in bending rigidity is relatively small, which is extremely convenient for improving sound insulation defects by dispersing the missing frequencies. That is, it is sufficient to mainly consider the difference in areal density.
本発明に係る石こうボードはその製造工程で充
填剤を混入等して面密度を大きくし形成される。
なお、充填材としては、粉体または粒体状の重量
骨材、繊維質材、網状材料等が用いられる。 The gypsum board according to the present invention is formed by adding a filler or the like during the manufacturing process to increase the areal density.
Note that, as the filler, powder or granular heavy aggregate, fibrous material, net-like material, etc. are used.
重量骨材としては、鉄、鉛、亜鉛、アルミニウ
ム、バリウム、カルシウム、ケイ素、炭素等の金
属及び無機物またはこれらの酸化物、硫酸物、塩
化物、水酸化物、炭酸化物その他の各種の塩並び
にこれ等を主成分とする鉱石等を原料とし、これ
等から得られる粉体または粒体状のものであり、
好ましくは砂、酸化鉄粉、硫酸バリウム粉等が用
いられる。 Heavy aggregates include metals and inorganic substances such as iron, lead, zinc, aluminum, barium, calcium, silicon, and carbon, or their oxides, sulfates, chlorides, hydroxides, carbonates, and other various salts. It is a powder or granule obtained from ores containing these as the main ingredients,
Preferably, sand, iron oxide powder, barium sulfate powder, etc. are used.
繊維質材料としてはガラスウール、ロツクウー
ル、金属繊維等が好ましく用いられる。なお、繊
維質材料は解砕して混入使用してもよく、石こう
スラリーの浸入を妨げない程度の圧密マツト状に
して挿入使用してもよい。網状材料としては、金
属製鋼等を好ましく用いることができる。網状材
料は石こうボード内部又は表層部に挿入又は粘着
等して用いることができる。 As the fibrous material, glass wool, rock wool, metal fiber, etc. are preferably used. The fibrous material may be crushed and used as a mixture, or it may be inserted into a compacted mat shape that does not prevent penetration of the gypsum slurry. As the mesh material, metal steel or the like can be preferably used. The mesh material can be used by being inserted or adhered to the inside or surface of the gypsum board.
これら充填材の好ましい特性としては、比重が
大きく、硬度が小さく、極力線繊維径または粒径
が小さいことである。 Preferable properties of these fillers include high specific gravity, low hardness, and as small a fiber diameter or particle size as possible.
次に、石こうボードの側部どうしを連設して所
望の壁材や表面材を形成するに際して、面密度を
異にする複数の石こうボードを用い、構成する石
こうボードの面密度の最大のものと最小のものと
の比を1.2以上、好ましくは1.5以上となるように
しなければならない。これによつて、前記壁材や
表面材上に生ずるコインシデンス効果によるc域
（c：コインシデンス限界周波数）での欠損、並
びに主として二（多）重壁構造において生ずる低
音域での共鳴透過によるrmd域（rmd域：低音
域の共鳴透過周波数）での欠損がそれぞれ大きく
改善される。その理由は、複数の領域間の面密度
（領域内の加重平均面密度）が約20％異なると、
その欠損周波数は、（cについても、rmdについ
ても）約10％移動し、石こうボードあるいはその
構造体の著しい遮音欠損の生起する周波数が分散
され、結果的に、遮音欠損が平準化されるからで
ある。なお、前記比が1.2未満では分散化効果が
弱く本発明の目的に適さない。 Next, when forming the desired wall material or surface material by connecting the sides of the gypsum boards, use a plurality of gypsum boards with different areal densities, and select the one with the highest areal density of the gypsum boards that make up the board. and the minimum must be at least 1.2, preferably at least 1.5. As a result, defects in the c range (c: coincidence limit frequency) due to the coincidence effect that occurs on the wall materials and surface materials, and the RMD region due to resonance transmission in the low frequency range that mainly occurs in double (multi) wall structures. (rmd range: resonance transmission frequency in the bass range) is greatly improved. The reason is that if the areal density between multiple regions (weighted average areal density within a region) differs by about 20%,
The defect frequency shifts by approximately 10% (for both c and rmd), and the frequencies at which significant sound insulation defects of the gypsum board or its structure occur are dispersed, and as a result, the sound insulation defects are leveled out. It is. Incidentally, if the ratio is less than 1.2, the dispersion effect is weak and it is not suitable for the purpose of the present invention.
この効果をさらに大きくする為には、最大面密
度／最小面密度比をより大きくする事が有効で
1.5以上が好ましい。この時、欠損周波数は大略
20％以上のずれを生じ、大きな欠損の分散化効果
を発揮する。 In order to further increase this effect, it is effective to increase the maximum areal density/minimum areal density ratio.
1.5 or more is preferable. At this time, the missing frequency is approximately
It produces a deviation of 20% or more and has a large defect dispersion effect.
さらに、前記複数の石こうボードから構成され
る壁材又は表面材等の全体の平均面密度より10％
以上大または小なる面密度を有する各石こうボー
ドの合計面積がそれぞれ構成壁材等の全体面積の
25％以上を有するように構成されることが好まし
い。 Furthermore, 10% of the average areal density of the entire wall material or surface material made of the plurality of gypsum boards, etc.
The total area of each gypsum board with an areal density greater or less than the total area of the constituent wall materials, etc.
It is preferable to have a structure having 25% or more.
また、それぞれの石こうボードが、該石こうボ
ードに内包される最大円の直径が３cm以上、好ま
しくは10cm以上の大きさとなるように形成される
ことが好ましい。この様な条件を満たすと、各石
こうボード毎の振動性状の相対的分離が促進さ
れ、遮音欠損の分散化効果が高まり、遮音欠損が
非常に大きくな改善される。 Further, each gypsum board is preferably formed such that the diameter of the largest circle included in the gypsum board is 3 cm or more, preferably 10 cm or more. If these conditions are met, the relative separation of the vibration properties of each gypsum board will be promoted, the effect of dispersing the sound insulation deficit will be enhanced, and the sound insulation deficit will be significantly improved.
以下に添付の図面にもとづき本発明に係る遮音
構成体の構成例について説明する。 An example of the structure of a sound insulation structure according to the present invention will be described below based on the accompanying drawings.
第１図は２枚の石こうボードから構成された遮
音構成体であり、一枚を市販の石こうボード、他
の一枚を川砂を充填材として用いた高面密度の石
こうボードからなるものであり、第２図は第１図
の構成例で用いた２種の石こうボードを格子状に
配置し側部どうしを連接して構成した８枚の石こ
うボードからなるものであり、第３図は川砂の添
加量を変えて形成した面密度を異にする４種類の
石こうボードを側部どうしを連設して構成したも
のであり、第４図は石こうボード内に３種類の網
目の粗さ及び重量を変えた金網を内挿して形成し
た15枚の石こうボードを側部どうしを連接して構
成したものである。 Figure 1 shows a sound insulation structure composed of two gypsum boards, one of which is a commercially available gypsum board and the other a high surface density gypsum board using river sand as a filler. , Figure 2 shows the two types of gypsum boards used in the configuration example in Figure 1, which are arranged in a lattice pattern, and consists of eight gypsum boards connected to each other on the sides. It is made up of four types of gypsum boards with different areal densities formed by changing the amount of addition of . It is made up of 15 gypsum boards made by inserting wire mesh of varying weight and connecting the sides.
上記、構成例において、充填材として川砂を例
示したが、川砂に代えて前記した如き充填材を用
いてもよい。 In the above configuration example, river sand was used as an example of the filler, but the filler described above may be used instead of river sand.
（実施例）
比較例 １
従来の市販石こうボード（厚さ９mm、面密度
6.5Kg／m2）90cm×180cm板の遮音性能をJIS−Ａ
−1416「実験室における音響透過損失の測定方法」
に準拠し測定した。その結果を第５図に示す。図
に示す如く約4000Hzにコインシデンス効果による
著しい遮音欠損が出現している。(Example) Comparative example 1 Conventional commercially available gypsum board (thickness 9 mm, surface density
6.5Kg/m 2 ) 90cm x 180cm board sound insulation performance JIS-A
−1416 “Method for measuring sound transmission loss in the laboratory”
Measured in accordance with . The results are shown in FIG. As shown in the figure, a significant sound insulation loss appears at approximately 4000Hz due to the coincidence effect.
実施例 １
第１図に示す如き遮音構成体を、厚さ９mmの石
こうボード中に平均粒径600μの川砂を１m2当り
3.5Kgの割合で充填して形成した面密度9.5Kg／m2
の45×90cmの石こうボードと比較例１で用いた市
販の石こうボード（45×90cmの大きさのもの）を
連設して形成した。この遮音構成体についても、
比較例１と同様に音響透過損失（以下、T.Lとい
う。）の測定を行つた。結果を第５図に示す。図
に示すように、分散化効果により、4000Hzの先の
比較例１の落ち込み部分を約7dB改善している。
また、重量増による質量則上の寄与によつて、ほ
ぼ全音域にわたつて約0.5〜2.0dB、T.L.を向上さ
せている。本実施例１では、最大面密度／最小面
密度は9.5／6.5＝1.46となり、コインシデンス効
果による欠損周波数（c）は、約4000Hzから約
5000Hz以上へと分散化され、欠損部分がこの音域
でかなり平準化されている事が判る。なお、通
例、質量則にもとづき5dBの遮音の改善を図るに
は壁厚（ここでは石こうボードの厚み）を倍にす
る必要があり、しかも壁厚を厚くしても前記した
如く遮音欠損は改善されないのである。本発明は
壁厚を変えずに遮音欠損を見事に解決したもので
ある。Example 1 A sound insulating structure as shown in Fig. 1 was prepared by placing river sand with an average particle size of 600 μm per square meter in a 9 mm thick gypsum board .
Areal density 9.5Kg/m 2 formed by filling at a ratio of 3.5Kg
A gypsum board measuring 45 x 90 cm was connected to a commercially available gypsum board (45 x 90 cm) used in Comparative Example 1. Regarding this sound insulation structure,
Sound transmission loss (hereinafter referred to as TL) was measured in the same manner as Comparative Example 1. The results are shown in Figure 5. As shown in the figure, due to the dispersion effect, the drop at 4000 Hz in Comparative Example 1 is improved by about 7 dB.
Additionally, due to the contribution of the mass law due to the increased weight, the TL has been improved by about 0.5 to 2.0 dB over almost the entire sound range. In Example 1, the maximum areal density/minimum areal density is 9.5/6.5=1.46, and the missing frequency (c) due to the coincidence effect is from about 4000Hz to about
It can be seen that the sound is dispersed to 5000Hz and above, and the missing parts are considerably leveled out in this range. Generally, based on the mass law, in order to improve sound insulation by 5 dB, it is necessary to double the wall thickness (in this case, the thickness of the gypsum board), and even if the wall thickness is increased, the sound insulation loss will not improve as described above. It is not done. The present invention successfully solves the problem of sound insulation without changing the wall thickness.
比較例 ２及び３
比較例１で用いた石こうボード２枚を用いグラ
スウール（厚さ25mm、密度45Kg／m2）をはさんで
第７図にその断面を示す構造の90cm／180cmのパ
ネルを作製し（パネルの面密度約15Kg／m2）、T.
L.を測定した（比較例２）。その結果を第６図に
示す。図に示す様に200Hz付近で二重壁の低音域
の共鳴透過により、また4000Hz付近ではコインシ
デンス効果によりそれぞれ大きな遮音欠損を生じ
させている。この為、遮音等級曲線をあてはめる
と、中・高音域で比較的高い遮音性を持ちながら
Ｄ−30を下廻つており、遮音等級評価では、ほぼ
Ｄ−25程度となる。次に従来の遮音欠損に対する
基本的な対策となつている欠損周波数の可聴域外
への一括的移動思想に基づいて、面材部分の重量
化を図つた比較例３は、先のパネルの面材部分
（２枚とも）を厚さ15mmの石こうボードに変更し
た。この為、パネルの全厚さは、43mmから55mm
へ、面密度は約15Kg／m2から約24Kg／m2に増加し
た。このパネルのT.L.測定結果を同じく第６図
に示すが、、遮音欠損周波数が低音域、高音域と
も約1/3オクターブ程度移動したものの、その遮
音欠損は依然として大きく、殆んど改善されてい
ない。Comparative Examples 2 and 3 Two gypsum boards used in Comparative Example 1 were sandwiched between glass wool (thickness 25 mm, density 45 Kg/m 2 ) to create a 90 cm/180 cm panel with a structure whose cross section is shown in Figure 7. (panel areal density approximately 15Kg/m 2 ), T.
L. was measured (Comparative Example 2). The results are shown in FIG. As shown in the figure, a large sound insulation loss is caused by the resonance transmission of the low frequency range of the double wall around 200Hz, and by the coincidence effect around 4000Hz. For this reason, when applying the sound insulation grade curve, it is below D-30 while having relatively high sound insulation properties in the medium and high frequency range, and the sound insulation grade evaluation is approximately D-25. Next, Comparative Example 3 is based on the idea of collectively moving missing frequencies out of the audible range, which is the basic countermeasure against sound insulation defects in the past, by increasing the weight of the panel part. The parts (both pieces) were changed to 15mm thick gypsum board. Therefore, the total thickness of the panel is 43mm to 55mm.
The areal density increased from about 15Kg/ m2 to about 24Kg/ m2 . The TL measurement results for this panel are also shown in Figure 6, and although the sound insulation deficit frequency has moved by about 1/3 of an octave in both the bass and treble ranges, the sound insulation deficit is still large and has hardly been improved. .
実施例 ２及び３
比較例２で用いたパネルの２枚の石こうボード
を実施例１で用いた本発明に係る石こうボードの
構成体に変更し（高面密度の石こうボード部分を
対向させた）、比較例１と同様にT.Lを測定した
（実施例２）。その結果を第６図に示す。Examples 2 and 3 The two gypsum boards of the panel used in Comparative Example 2 were changed to the gypsum board structure according to the present invention used in Example 1 (the high surface density gypsum board parts were faced) , TL was measured in the same manner as Comparative Example 1 (Example 2). The results are shown in FIG.
図に示す如く、低音域並びに高音域での遮音欠
損が同時に大巾に改善されている。その改善量
は、低音域で7dB、高音域では8dB近くに達して
いる。また欠損部分がかなり平準化し、平坦にな
つている事がわかる。尚、比較例２に対し、パネ
ルの面密度の増加は約15Kg／m2から約18Kg／m2
（平均）の３Kg／m2の増加に止まり、厚さ増は全
くない。 As shown in the figure, the sound insulation deficiencies in both the bass and treble ranges have been greatly improved. The amount of improvement is 7dB in the bass range and nearly 8dB in the treble range. It can also be seen that the defective part has been considerably leveled and flattened. In addition, compared to Comparative Example 2, the increase in the areal density of the panel is from about 15Kg/m 2 to about 18Kg/m 2
The increase was only 3Kg/m 2 (on average), and there was no increase in thickness at all.
次に第３図に示す如き遮音構成体を、石こうボ
ードＡの面密度が11Kg／m2、石こうボードＢの面
密度が9.5Kg／m2、石こうボードＣの画密度が８
Kg／m2、石こうボードＤ（比較例１で用いた市販
品）の面密度が6.5Kg／m2となるよう、石こうボ
ード中に実施例１で用いた川砂を充填したものを
用いて形成した。なお各石こうボードはいずれも
45×90cmで、厚みは９mmであつた。 Next , a sound insulation structure as shown in FIG .
Gypsum board D (commercially available product used in Comparative Example 1) was formed using a plaster board filled with the river sand used in Example 1 so that the areal density was 6.5 Kg/m2. did. Furthermore, each gypsum board is
It was 45 x 90 cm and 9 mm thick.
この遮音構成体についても比較例１と同様に
T.Lを測定した。結果を第６図に示す。図に示す
ように欠損部分がさらに大巾に改善され、その改
善量は低音域では約8dB、高音域でも約8dBとな
り、ほとんど欠損部分が解消された。これは、不
均質化の範囲、即ち最大面密度／最小面密度比を
大きくとり（1.69）、しかもその面密度を多段階
に不均質化した事により達成されたものと考えら
れる。 This sound insulation structure is also similar to Comparative Example 1.
TL was measured. The results are shown in Figure 6. As shown in the figure, the deficit area has been improved to a greater extent, with the amount of improvement being approximately 8 dB in the bass range and approximately 8 dB in the treble range, meaning that the deficit area has almost been eliminated. This is considered to have been achieved by increasing the range of inhomogenization, that is, the maximum areal density/minimum areal density ratio (1.69), and by making the areal density heterogeneous in multiple stages.
（発明の効果）
以上の様に、本発明に係る石こうボードは、全
体的な重量増をわずかな範囲に止め、厚さ増を必
要とせずに、従来の対応では殆んど改善し得なか
つた遮音欠損を大巾に改善するものであり、しか
も石こうボードの特質を殆んど損ねていないた
め、GL工法壁には勿論、他の壁材、間仕切材に
も好適に用いられるものである。(Effects of the Invention) As described above, the gypsum board according to the present invention keeps the overall weight increase within a small range, does not require an increase in thickness, and has an improvement that could hardly be achieved with conventional measures. It greatly improves sound insulation deficiencies and does not impair the characteristics of gypsum board, so it can be used not only for GL method walls but also for other wall materials and partition materials. .
第１図乃至第４図は本発明に係る面密度を異に
する複数の石こうボードからなる遮音構成体の構
成例を示す平面図であり、第５図は比較例１及び
実施例１の音響透過損失を示す図であり、第６図
は比較例２、３及び実施例２、３の音響透過損失
を示す図であり、第７図は比較例２、３及び実施
例２、３で用いたパネルの断面図である。
1 to 4 are plan views showing examples of the structure of a sound insulation structure made of a plurality of gypsum boards with different areal densities according to the present invention, and FIG. FIG. 6 is a diagram showing the acoustic transmission loss of Comparative Examples 2 and 3 and Examples 2 and 3, and FIG. 7 is a diagram showing the acoustic transmission loss of Comparative Examples 2 and 3 and Examples 2 and 3. FIG.
Claims (1)
材から選ばれた充填材を混入または挿入して形成
された複数の面密度を異にする石こうボードを連
接して構成された構成体であつて、最大面密度を
有する石こうボードの面密度と最小面密度を有す
る石こうボードの面密度の比を1.2以上として構
成されることを特徴とする遮音構成体。1 A structure constructed by connecting multiple gypsum boards with different areal densities, which are formed by mixing or inserting a filler selected from heavy aggregate, fibrous materials, and mesh materials into gypsum boards. A sound insulation structure characterized in that the ratio of the areal density of the gypsum board having the maximum areal density to the areal density of the gypsum board having the minimum areal density is 1.2 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7064685A JPS61229048A (en) | 1985-04-03 | 1985-04-03 | Sound blocking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7064685A JPS61229048A (en) | 1985-04-03 | 1985-04-03 | Sound blocking structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61229048A JPS61229048A (en) | 1986-10-13 |
| JPH0470456B2 true JPH0470456B2 (en) | 1992-11-11 |
Family
ID=13437621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7064685A Granted JPS61229048A (en) | 1985-04-03 | 1985-04-03 | Sound blocking structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61229048A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7712580B2 (en) * | 1999-04-20 | 2010-05-11 | Virginia Tech Intellectual Properties, Inc. | Active/passive distributed absorber for vibration and sound radiation control |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607490A (en) * | 1983-06-28 | 1985-01-16 | 日本ゼオン株式会社 | Sound insulation plate |
| JPS6035793A (en) * | 1983-08-09 | 1985-02-23 | 日本ゼオン株式会社 | Sound insulating surface material |
| JPS6160945A (en) * | 1984-08-30 | 1986-03-28 | 日本ゼオン株式会社 | Sound blocking structure |
-
1985
- 1985-04-03 JP JP7064685A patent/JPS61229048A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607490A (en) * | 1983-06-28 | 1985-01-16 | 日本ゼオン株式会社 | Sound insulation plate |
| JPS6035793A (en) * | 1983-08-09 | 1985-02-23 | 日本ゼオン株式会社 | Sound insulating surface material |
| JPS6160945A (en) * | 1984-08-30 | 1986-03-28 | 日本ゼオン株式会社 | Sound blocking structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61229048A (en) | 1986-10-13 |
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