JPH02131296A - Sound insulation concrete board having sound absorbing performance - Google Patents
Sound insulation concrete board having sound absorbing performanceInfo
- Publication number
- JPH02131296A JPH02131296A JP63285174A JP28517488A JPH02131296A JP H02131296 A JPH02131296 A JP H02131296A JP 63285174 A JP63285174 A JP 63285174A JP 28517488 A JP28517488 A JP 28517488A JP H02131296 A JPH02131296 A JP H02131296A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- porous layer
- absorbing performance
- pores
- porous
- 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.)
- Pending
Links
- 238000009413 insulation Methods 0.000 title abstract description 8
- 239000011148 porous material Substances 0.000 abstract description 7
- 230000002238 attenuated effect Effects 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 241000146029 Lindera aggregata Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は吸音性能を有する遮音コンクリート板に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sound insulating concrete plate having sound absorption performance.
（従来の技術）
従来における遮音コンクリート板は専らコンクリートの
質量効果に期待するものであり十分な遮音性能を達成出
来ていない。(Prior Art) Conventional sound-insulating concrete plates rely solely on the mass effect of concrete, and have not been able to achieve sufficient sound-insulating performance.
（発明が解決しようとする課題）
本発明は以上の従来の課題を解決し吸音性能を付加して
より十分な遮音を可能にした吸音性能を有する遮音コン
クリート板の提供を目的とする。(Problems to be Solved by the Invention) It is an object of the present invention to provide a sound-insulating concrete plate having sound-absorbing performance that solves the above-mentioned conventional problems and adds sound-absorbing performance to enable more sufficient sound insulation.
（課題を解決するための手段）
本発明は以上の目的達成のために
１、その表面に孔が設けられたポーラス層と、該ポーラ
ス層の裏面に設けられたベース層とからなる吸音性能を
有する遮音コンクリート板２．孔が複数種類である特許
請求の範囲第１項記載の遮音コンクリート板
３．孔の共鳴周波数か相互にずらされた特許請求の範囲
第２項記載の遮音コンクリート板を提案するものである
。(Means for Solving the Problems) In order to achieve the above objects, the present invention has the following features: 1. Sound absorbing performance consisting of a porous layer with holes provided on its surface and a base layer provided on the back surface of the porous layer. Sound insulating concrete board with 2. 3. Sound insulating concrete plate according to claim 1, having a plurality of types of holes. The present invention proposes a sound insulating concrete plate according to claim 2, in which the resonant frequencies of the holes are shifted from each other.
（作用）
（１）本発明の遮音コンクリート板は特にポーラス層を
有するため吸音性能が付加されより十分な遮音が可能に
なる。(Function) (1) Since the sound insulating concrete board of the present invention has a particularly porous layer, sound absorbing performance is added and more sufficient sound insulation becomes possible.
（２）本発明の遮音コンクリート板は特にポーラス層の
表面に孔が設けられるため共鳴により吸音が一層促進さ
れろ。(2) Since the sound-insulating concrete plate of the present invention has holes particularly provided on the surface of the porous layer, sound absorption is further promoted by resonance.
（実施例）
以下本発明の吸音性能を有する遮音コンクリート板を図
面に示す実施例に従い説明する。(Example) The sound insulating concrete plate having sound absorption performance of the present invention will be explained below according to the example shown in the drawings.
第１図乃至第３図は本発明の遮音コンクリート板を示し
、該遮音コンクリート板（１）はポーラスコンクリート
で作られた表面側のポーラス層（２）を有する。Figures 1 to 3 show a sound-insulating concrete board (1) according to the invention, which has a surface-side porous layer (2) made of porous concrete.
該ポーラスコンクリートは例えは次の成分て作られろ：
ｌ．粗骨材の粒度 ５〜ｌＯｍＩｌ１
２．配合
水セメント比（ｗ／ ｃ Ｘ １ ０ ０）２０〜３０
％
セメントペースト粗骨材比（［）／ＧＸ １ ００）１
０〜３０％
ここて
Ｗ：使用すべき水の重量（ｇｒ）
Ｃ：使用すべきセメントの重ｆｆｉ（ｇｒ）ｐ：ｗ＋ｃ
Ｇ：使用すへき粗骨材の重Ｉｔ （ ｇ ｒ ）以上の
成分で作られるポーラスコンクリートの空隙率が重要で
あって例えは３２％となる。The porous concrete may be made of, for example, the following ingredients: l. Particle size of coarse aggregate 5~lOmIl1 2. Blended water-cement ratio (w/c x 100) 20-30
% Cement paste coarse aggregate ratio ([)/GX 1 00) 1
0 to 30% W: Weight of water to be used (gr) C: Weight of cement to be used ffi (gr) P: w+c G: Weight of coarse aggregate to be used It (gr) or higher components The porosity of porous concrete made with is important, and is 32%, for example.
この空隙率はポーラスコンクリート内の空隙細管を連続
させるための最低空瞭率９％以上にしなければならない
。This porosity must be a minimum porosity of 9% or more in order to make the pore tubes in the porous concrete continuous.
次に前記ポーラスＮ（２）の裏面には密度の高いコンク
リートで作られたベース層（３）が設けられる。Next, a base layer (3) made of high-density concrete is provided on the back side of the porous N (2).
該ベース層（３）のコンクリートは例えは次の成分て作
られる：
ｌ．骨材
１．１ 粗骨材粒度 ５〜ｌＯＩＩＩＩ１１．２
纏骨材粒度
２．配合
水セメント比（Ｗ／ Ｃ Ｘ １ ０ ０）３０〜５
０％
細骨材比（Ｓ／ａＸ １ ００）２（Ｊ〜７０％ここで
Ｓ：使用すべき細骨ｔ才の重ｆｌ （ｇ ｒ）ａ＝Ｓ＋
Ｇ
次に前記ポーラス層（２）についてはその表面に複数Ｆ
！類の孔が設けられろ。The concrete of the base layer (3) is made, for example, of the following components: l. Aggregate 1.1 Coarse aggregate particle size 5~lOIII11.2
Aggregate particle size 2. Blended water-cement ratio (W/C X 100) 30-5
0% Fine aggregate ratio (S / a
G Next, regarding the porous layer (2), a plurality of F
! A similar hole should be provided.
図示の実施例では孔は大径孔（５ａ）、２段孔（５ ｂ
）及び小径孔（５Ｃ）からなる。In the illustrated embodiment, the holes include a large diameter hole (5a) and a two-stage hole (5b).
) and a small diameter hole (5C).
これらの孔は特定の周波数の音を共鳴させ減衰させるた
めのものである。These holes are intended to resonate and attenuate sounds at specific frequencies.
その共鳴周波数ｆはへルムホルツ型の共鳴と１反定すれ
ば二
Ｃ：音速（ ３ ６ ０ ０ ０ｃｍ／ｓｅｃ）ｄ：孔
の径（ｃｍ）
ｈ：孔の深さ（ｃ＋ａ）
以上の式から大径孔（５ａ）、２段孔（５ｂ）及び小径
孔（５ｃ）について計算すれば：
ｌ．大径孔
ｄ＝８０ｎｍ
ｈ＝７０ｍｍ
ｆ．＝８００Ｈ２
２．２段孔
ｄ＋＝８０＋ｎｍ
ｈ．＝７０ｍｍ
及び
ｄ２＝４０慣慣
ｈ２＝３５＋ｕａ
ｆ ｂ＝ １ １ ４ ０ Ｈ ｚ
３．小径孔
ｄ＝４０＋ｎｎ＋
ｈ＝３５ｗｕ＋＋
ｆｃ＝１７００Ｈ．
以上のｆａ，ｆｂ及びｆｃは相互にずれろ様に設計され
ている。The resonant frequency f is equal to the Helmholtz type resonance by 1 and 2 C: Speed of sound (36000 cm/sec) d: Diameter of the hole (cm) h: Depth of the hole (c+a) From the above formula Calculating for the large-diameter hole (5a), the two-stage hole (5b), and the small-diameter hole (5c): l. Large diameter hole d=80nm h=70mm f. =800H2 2.2 step hole d+=80+nm h. =70mm and d2=40 habit h2=35+ua f b= 1 1 4 0 Hz 3. Small diameter hole d=40+nn+ h=35wu++ fc=1700H. The above fa, fb, and fc are designed to be offset from each other.
これにより第４図の１点鎖線で示す掻に吸音される音の
周波数範囲が広がるのである。As a result, the frequency range of the sound that is absorbed is expanded, as indicated by the dashed line in FIG.
次にポーラス層（２）の孔において共鳴した音は孔の表
面からポーラス層（２）内の空隙細管へと拡散される。The sound resonated in the pores of the porous layer (2) is then diffused from the surface of the pores to the void capillaries within the porous layer (2).
この拡散の過程で音は減衰されていき更にペース層（３
）に当って反射される。During this diffusion process, the sound is attenuated and furthermore the pace layer (3
) and is reflected.
反射後もポーラス層（２）内の空隙細管へと拡散ヨリ一
層減衰するのである・
（発明の効果）
本発明の吸音性能を有する遮音コンクリート板の実施例
は以上の通りでありその効果を次に列記する。Even after reflection, it is further attenuated by diffusion into the hollow tubes in the porous layer (2). Listed in
（１）本発明の遮音コンクリート板は特にポーラス層を
有するため吸音性能が付加されより十分な遮音が可能に
なる。(1) Since the sound-insulating concrete board of the present invention has a particularly porous layer, it has added sound-absorbing performance and can achieve more sufficient sound insulation.
（２）本発明の遮音コンクリート板は特にポーラス層の
表面に孔が設けられるため共鳴により吸音が一層促進さ
れる。(2) In the sound-insulating concrete plate of the present invention, since holes are particularly provided on the surface of the porous layer, sound absorption is further promoted by resonance.
第１図は本発明の遮音コンクリート板の斜視図第２図は
同上遮音コンクリート板のポーラス層の表面の正面図
第３図は同上ポーラス層の孔の横断面図第４図は同上孔
による周波数一吸音率特性図ｌ：遮音コンクリート板
２：ポーラス層 ３：ベース層
５ａ：大径孔 ５ｂ：２段孔
５ｃ：小径孔
出願人 株式会社廣瀬清三郎商店Fig. 1 is a perspective view of the sound insulating concrete plate of the present invention Fig. 2 is a front view of the surface of the porous layer of the sound insulating concrete plate as above Fig. 3 is a cross-sectional view of the holes in the porous layer as above Fig. 4 is the frequency caused by the holes as above Sound absorption coefficient characteristic diagram 1: Sound insulation concrete plate 2: Porous layer 3: Base layer 5a: Large diameter hole 5b: Two-stage hole 5c: Small diameter hole Applicant: Hirose Seizaburo Shoten Co., Ltd.
Claims (1)
ス層の裏面に設けられたベース層とからなる吸音性能を
有する遮音コンクリート板 ２、孔が複数種類である特許請求の範囲第１項記載の遮
音コンクリート板 ３、孔の共鳴周波数が相互にずらされた特許請求の範囲
第２項記載の遮音コンクリート板[Claims] 1. A sound insulating concrete plate having sound absorbing performance consisting of a porous layer with holes provided on its surface and a base layer provided on the back side of the porous layer 2. A patent in which there are multiple types of holes. The sound insulating concrete plate 3 according to claim 1, and the sound insulating concrete plate according to claim 2, in which the resonant frequencies of the holes are shifted from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63285174A JPH02131296A (en) | 1988-11-11 | 1988-11-11 | Sound insulation concrete board having sound absorbing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63285174A JPH02131296A (en) | 1988-11-11 | 1988-11-11 | Sound insulation concrete board having sound absorbing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02131296A true JPH02131296A (en) | 1990-05-21 |
Family
ID=17688056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63285174A Pending JPH02131296A (en) | 1988-11-11 | 1988-11-11 | Sound insulation concrete board having sound absorbing performance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02131296A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5281361A (en) * | 1990-05-30 | 1994-01-25 | Lever Brothers Company, Division Of Conopco, Inc. | Bleaching composition |
| JP2001329551A (en) * | 2000-05-24 | 2001-11-30 | Osamu Watanabe | Sound absorbing structure of retaining wall and face of slope |
| US7322441B2 (en) * | 2005-04-14 | 2008-01-29 | Rpg Diffusor Systems, Inc. | Extended bandwidth folded well diffusor |
| US7428948B2 (en) * | 2005-08-11 | 2008-09-30 | Rpg Diffusor Systems, Inc. | Hybrid amplitude-phase grating diffusers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5248704A (en) * | 1975-10-15 | 1977-04-19 | Naoyasu Sata | Generating method of high temperature high pressure nergy gas |
| JPS59222893A (en) * | 1983-05-31 | 1984-12-14 | 住友電気工業株式会社 | Acoustic board |
| JPS6178943A (en) * | 1984-09-26 | 1986-04-22 | 昭和電工株式会社 | Attachment of rigid sound absorbing plate |
| JPS61233107A (en) * | 1985-04-09 | 1986-10-17 | 昭和電工株式会社 | Sound absorbing and blocking sound-proof wall |
-
1988
- 1988-11-11 JP JP63285174A patent/JPH02131296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5248704A (en) * | 1975-10-15 | 1977-04-19 | Naoyasu Sata | Generating method of high temperature high pressure nergy gas |
| JPS59222893A (en) * | 1983-05-31 | 1984-12-14 | 住友電気工業株式会社 | Acoustic board |
| JPS6178943A (en) * | 1984-09-26 | 1986-04-22 | 昭和電工株式会社 | Attachment of rigid sound absorbing plate |
| JPS61233107A (en) * | 1985-04-09 | 1986-10-17 | 昭和電工株式会社 | Sound absorbing and blocking sound-proof wall |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5281361A (en) * | 1990-05-30 | 1994-01-25 | Lever Brothers Company, Division Of Conopco, Inc. | Bleaching composition |
| JP2001329551A (en) * | 2000-05-24 | 2001-11-30 | Osamu Watanabe | Sound absorbing structure of retaining wall and face of slope |
| US7322441B2 (en) * | 2005-04-14 | 2008-01-29 | Rpg Diffusor Systems, Inc. | Extended bandwidth folded well diffusor |
| US7428948B2 (en) * | 2005-08-11 | 2008-09-30 | Rpg Diffusor Systems, Inc. | Hybrid amplitude-phase grating diffusers |
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