JP3450415B2 - Manufacturing method of concrete board with sound absorbing board - Google Patents
Manufacturing method of concrete board with sound absorbing boardInfo
- Publication number
- JP3450415B2 JP3450415B2 JP06446494A JP6446494A JP3450415B2 JP 3450415 B2 JP3450415 B2 JP 3450415B2 JP 06446494 A JP06446494 A JP 06446494A JP 6446494 A JP6446494 A JP 6446494A JP 3450415 B2 JP3450415 B2 JP 3450415B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- sound absorbing
- plate
- sound
- board
- 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 - Fee Related
Links
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、コンクリート板と多孔
質の吸音板とを密着一体化させた、吸音板付きコンクリ
ート板の製造方法に関するものである。
【０００２】
【従来の技術】吸音や遮音を必要とする建造物の内、外
装や、防音壁等には、多孔質の吸音板を施設することが
行われている。この吸音板の施設は、従来一般に、既に
構築されたコンクリート躯体に、予め形成された多孔質
の吸音板を接着剤を用いて貼り付けたり、吸音板をアン
カー材及びモルタルを用いて止着する方法が採られてい
る。
【０００３】
【発明が解決しようとする課題】しかし、上記のよう
な、コンクリート躯体の構築後に吸音板を取り付ける方
法では、コンクリート躯体の水分により接着不足が問題
となるばかりでなく、施工のための足場を組む必要があ
るとともに、吸音板の面が不揃いとなることが多く、施
工が難しく、コストが高くなるという欠点がある。
【０００４】本発明は、上記従来の問題点を解決するた
めになされたもので、建造物類のプレハブ化が進みつつ
あることにかんがみ、コンクリート躯体或はその一部に
代って用いられるコンクリート板に吸音板を一体的に結
合した製品を製造できるようにし、現場における吸音板
貼着作業を不要とし、施工の簡易化、能率化とコストの
低減を図ろうとするものである。
【０００５】
【課題を解決するための手段】上記の目的を達成するた
めの本発明の構成について、実施例に対応する図面を参
照して説明すると、本発明は、コンクリート板成形用型
枠１内に、複数個の多孔質な吸音板４，４を敷き並べ、
吸音板４，４相互の接目を目地材５で埋めて、吸音板
４，４に散水して水分を付与させた後、吸音板４，４上
に配筋７を施し、生コンクリート８を打設して養生成形
することを特徴とするものである。
【０００６】本発明において使用される型枠は、コンク
リート板を成形するに適した型枠であれば、特に形状、
構造に限定されるものではない。
【０００７】また、吸音板は、かさ比重 0.2〜 0.4の軽
量多孔質コンクリートにより形成される。好ましくは、
硅酸カルシウム系水和物を基材として構成され、直径
0.1〜１mm程度の小さな気孔が相互に連通しており、吸
音のほか、遮音性及び断熱性を有するのがよい。また、
吸音板の厚さは40〜 100mm、好ましくは50〜70mmのもの
が適している。吸音板の平面形状は、一般的には四角
形、長方形となるが、三角形や多角形でもよく、敷き並
べた際に、相互間に通常の目地が形成されるに適した形
状であれば、適宜な形状のものを採用できる。
【０００８】上記の吸音板の複数個が型枠の底板上に敷
き並べられ、吸音板相互の接目部分には、硬練りモルタ
ル或は石膏プラスター等の目地材が埋められ、後に行わ
れる生コンクリート打設時のペーストの漏れを防止する
ことになる。
【０００９】その後は、敷き並べられた吸音板上に水を
散水する。この散水は、本発明において重要な工程であ
る。すなわち、吸音板は比重が 0.2〜 0.4と極めて軽く
多孔質であることから吸水が大きく、生コンクリートを
打設した際、コンクリートの水分を吸収して、コンクリ
ートと吸音板との付着を阻害することになるため、あら
かじめ適量の水分を吸音板に付与することとするのであ
る。この散水量は、吸音板１m2当り1000〜2500ｇ、好ま
しくは1500〜2000ｇとする。
【００１０】散水後は、吸音板の上方に配筋を施して生
コンクリートを所要の厚さに打設する。その際、型枠に
振動を与えてコンクリートを締め固めすることができ
る。そして、養生を施し、コンクリートを硬化させた後
脱型する。それにより、吸音板とコンクリートとが一体
的に強固に結合された吸音板付きコンクリート板が製造
できることになる。上記の養生は、自然養生でもよく、
常温常圧蒸気養生を行ってもよい。上記製造による吸音
板付きコンクリート板は、現場に搬入して建込めばよ
い。
【００１１】
【作用】本発明は上記のように構成されており、吸音板
には散水により水分を付与してから生コンクリートを打
設するので、その際、吸音板により生コンクリートの水
分を吸収されることがなく、したがって、吸音板とコン
クリートとは、他に接着剤等による付着手段を加えるこ
となく強固に結合されることになる。
【００１２】
【実施例】次に、本発明の実施例について、図面を参照
して説明する。図１、図２において、１はコンクリート
板を成型するのに使用される一般的な箱状の型枠で、底
板２と側枠板３とが分離可能に結合された構造となって
いる。
【００１３】まず、型枠１内には、その底板２上に、複
数個の吸音板４，４を敷き並べ、吸音板相互の接目に石
膏プラスターの目地材５を充填して目地埋めを行う。吸
音板４は、厚さ50mm、かさ比重 0.3の軽量多孔質コンク
リート板（ポアセル：大同コンクリート工業（株）製）
を使用した。
【００１４】次に、吸音板４，４の表面に水を散水し
て、吸音板に吸水させる。この散水量に対する吸音板と
コンクリートとの付着強さの関係は、次表に示す如くで
ある。
【００１５】
散水量（g/m2) ０ 1000 1500 2000 2500
付着強さ（kgf/cm2) 1.35 1.50 1.95 1.70 1.40
【００１６】上記の表によれば、散水量は、吸音板１m2
当り1500〜2000ｇとしたときにより大きな付着強度を発
現することが認められる。
【００１７】散水後は、吸音板４，４に複数本の支持釘
６，６を立設し、その上端部に結合して、吸音板４，４
より少し離れた上方位に配筋７を施し、吸音板４，４上
に生コンクリート８を打設して、そのコンクリート８中
に配筋７を埋設させる。なお、配筋７はスペーサ等を用
いて配置することもできる。そして、打設した生コンク
リート８の上面を均した後養生を施し、コンクリートの
硬化後に脱型すれば、図３に示すような、吸音板４，４
とコンクリート８とが結合、一体化した吸音板付きコン
クリート板が製造されることになるのである。
【００１８】
【発明の効果】以上説明したように、本発明によれば、
型枠内に吸音板を敷き並べ、散水して吸音板に水分を吸
収させた後、生コンクリートを打設して、吸音板とコン
クリートを一体的に結合させるようにしたので、吸音板
付きコンクリート板が極めて簡単、容易に、しかも吸音
板の付着強度が大なコンクリート板が製造できる。その
結果、従来のような、現場での吸音板の貼付作業を要せ
ず、そのための足場を組む必要がなくなり、現場施工が
容易になり、コストの大巾な低減が図れることになる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a concrete plate with a sound absorbing plate, in which a concrete plate and a porous sound absorbing plate are tightly integrated. 2. Description of the Related Art Porous sound-absorbing plates are installed in the interior, exterior, sound-insulating walls and the like of buildings requiring sound absorption and sound insulation. Conventionally, this sound-absorbing plate facility is generally attached with a pre-formed porous sound-absorbing plate to an already constructed concrete frame using an adhesive, or fixed to the sound-absorbing plate using an anchor material and mortar. The method has been adopted. [0003] However, in the above-mentioned method of attaching the sound absorbing plate after the construction of the concrete skeleton, not only the problem of insufficient adhesion due to the moisture of the concrete skeleton but also the problem of construction It is necessary to form a scaffold, and the surface of the sound-absorbing plate is often uneven, which is disadvantageous in that the construction is difficult and the cost is high. The present invention has been made in order to solve the above-mentioned conventional problems. In view of the fact that prefabrication of buildings is progressing, concrete used in place of a concrete frame or a part thereof is used. The object of the present invention is to make it possible to manufacture a product in which a sound absorbing plate is integrally joined to a plate, to eliminate the work of attaching the sound absorbing plate on site, and to simplify the construction, increase efficiency, and reduce costs. [0005] The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. Inside, a plurality of porous sound absorbing plates 4 and 4 are laid out,
After filling the joints between the sound absorbing plates 4 and 4 with the joint material 5 and spraying water on the sound absorbing plates 4 and 4 to give water thereto, reinforcing bars 7 are provided on the sound absorbing plates 4 and 4 to prepare the fresh concrete 8. It is characterized in that it is cast and cultivated. The form used in the present invention is not particularly limited as long as the form is suitable for molding a concrete plate.
It is not limited to the structure. [0007] The sound absorbing plate is formed of lightweight porous concrete having a bulk specific gravity of 0.2 to 0.4. Preferably,
It is composed of calcium silicate hydrate as a base material and has a diameter of
Small pores of about 0.1 to 1 mm communicate with each other, and preferably have sound insulation and heat insulation in addition to sound absorption. Also,
The thickness of the sound absorbing plate is 40 to 100 mm, preferably 50 to 70 mm. The plane shape of the sound absorbing plate is generally a square or a rectangle, but may be a triangle or a polygon. Any shape can be adopted. A plurality of the above sound absorbing plates are laid out on the bottom plate of the formwork, and joints between the sound absorbing plates are filled with a joint material such as hardened mortar or gypsum plaster. This prevents the paste from leaking during concrete casting. [0009] Thereafter, water is sprinkled on the arranged sound absorbing plates. This watering is an important step in the present invention. In other words, the sound absorbing board is extremely light and porous with a specific gravity of 0.2 to 0.4, so it absorbs a large amount of water.When placing fresh concrete, it absorbs the moisture of the concrete and hinders the adhesion between the concrete and the sound absorbing board. Therefore, an appropriate amount of water is applied to the sound absorbing plate in advance. The amount of water sprayed is 1000 to 2500 g, preferably 1500 to 2000 g per 1 m 2 of the sound absorbing plate. [0010] After water sprinkling, reinforcing concrete is provided above the sound absorbing plate, and ready-mixed concrete is poured into a required thickness. At this time, the concrete can be compacted by applying vibration to the formwork. After curing and concrete hardening, the mold is released. Thus, a concrete plate with a sound absorbing plate in which the sound absorbing plate and concrete are integrally and firmly connected can be manufactured. The above-mentioned curing may be natural curing,
Room temperature and normal pressure steam curing may be performed. The concrete plate with the sound absorbing plate manufactured as described above may be carried into the site and built. The present invention is constructed as described above. Since water is applied to the sound absorbing plate by spraying water and then the ready-mixed concrete is poured, the sound absorbing plate absorbs the moisture of the ready-mixed concrete. Therefore, the sound absorbing plate and the concrete are firmly connected to each other without any additional attaching means such as an adhesive. Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a general box-shaped formwork used for molding a concrete plate, and has a structure in which a bottom plate 2 and a side frame plate 3 are separably connected. First, a plurality of sound-absorbing plates 4 and 4 are arranged and arranged on a bottom plate 2 in a mold 1 and a joint material 5 of gypsum plaster is filled between joints of the sound-absorbing plates to fill the joints. Do. The sound absorbing plate 4 is a lightweight porous concrete plate having a thickness of 50 mm and a specific gravity of 0.3 (Porecell: manufactured by Daido Concrete Industry Co., Ltd.)
It was used. Next, water is sprinkled on the surfaces of the sound absorbing plates 4 and 4 so that the sound absorbing plates absorb water. The relationship between the amount of water spray and the bond strength between the sound absorbing plate and concrete is as shown in the following table. Water spray amount (g / m 2 ) 0 1000 1500 2000 2500 Adhesive strength (kgf / cm 2 ) 1.35 1.50 1.95 1.70 1.40 According to the above table, the water spray amount is 1 m 2 of the sound absorbing plate.
It is recognized that greater adhesion strength is exhibited when the weight is 1500 to 2000 g. After water sprinkling, a plurality of supporting nails 6 and 6 are erected on the sound absorbing plates 4 and 4 and connected to the upper ends thereof to form sound absorbing plates 4 and 4.
Reinforcement 7 is applied in a slightly distant upper direction, fresh concrete 8 is cast on sound absorbing plates 4, 4, and reinforcement 7 is buried in the concrete 8. The reinforcing bars 7 can also be arranged using a spacer or the like. Then, after the upper surface of the poured concrete 8 is leveled and cured, and the concrete is cured and then released, the sound absorbing plates 4 and 4 as shown in FIG.
Thus, a concrete plate with a sound absorbing plate in which the concrete and the concrete 8 are combined and integrated is manufactured. As described above, according to the present invention,
After laying sound absorbing boards in the formwork and sprinkling water to absorb the water into the sound absorbing boards, the concrete was poured and the sound absorbing boards and the concrete were integrally joined. It is possible to manufacture a concrete plate having a very simple and easy plate and a large sound absorbing plate adhesion strength. As a result, there is no need to attach a sound absorbing plate on site as in the related art, and it is not necessary to construct a scaffold for that purpose. This facilitates on-site construction and greatly reduces costs.
【図面の簡単な説明】
【図１】本発明の一実施例による製造過程を示すもの
で、型枠内に吸音板を敷き並べたところの縦断面図であ
る。
【図２】同コンクリートを打設したところの縦断面図で
ある。
【図３】製造された吸音板付きコンクリート板の一例を
示す斜視図である。
【符号の説明】
１ 型枠
４ 吸音板
５ 目地材
７ 配筋
８ コンクリートBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a manufacturing process according to an embodiment of the present invention, in which sound absorbing plates are laid in a formwork. FIG. 2 is a vertical cross-sectional view of the place where the concrete is cast. FIG. 3 is a perspective view showing an example of a manufactured concrete plate with a sound absorbing plate. [Description of Signs] 1 Formwork 4 Sound absorbing plate 5 Joint material 7 Reinforcement 8 Concrete
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 32/00 B28B 1/14 B28B 1/16 B28B 23/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) C04B 32/00 B28B 1/14 B28B 1/16 B28B 23/02
Claims (1)
板を敷き並べ、吸音板相互の接目を目地材で埋めて、吸
音板に散水して水分を付与させた後、吸音板上に配筋を
施し、生コンクリートを打設して養生成形することを特
徴とする、吸音板付きコンクリート板の製造方法。(57) [Claims] A plurality of porous sound-absorbing plates are laid out in a concrete plate-forming form, and the joints between the sound-absorbing plates are filled with joint materials, and water is sprayed on the sound-absorbing plates to remove water. A method of producing a concrete plate with a sound-absorbing plate, comprising: providing reinforcement on the sound-absorbing plate, pouring fresh concrete, and forming the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06446494A JP3450415B2 (en) | 1994-03-08 | 1994-03-08 | Manufacturing method of concrete board with sound absorbing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06446494A JP3450415B2 (en) | 1994-03-08 | 1994-03-08 | Manufacturing method of concrete board with sound absorbing board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07242458A JPH07242458A (en) | 1995-09-19 |
| JP3450415B2 true JP3450415B2 (en) | 2003-09-22 |
Family
ID=13258988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06446494A Expired - Fee Related JP3450415B2 (en) | 1994-03-08 | 1994-03-08 | Manufacturing method of concrete board with sound absorbing board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3450415B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040003518A (en) * | 2002-07-03 | 2004-01-13 | 박성현 | United light-weight concrete panel and manufacturing method thereof |
| KR100721121B1 (en) * | 2006-08-10 | 2007-05-23 | (주)세지오물산 | Manufacturing method of soundproof panel comprised of sound absorpting permeable concrete and soundproofing wall having the soundproof panel |
| US11551654B2 (en) * | 2016-02-02 | 2023-01-10 | Nut Shell LLC | Systems and methods for constructing noise reducing surfaces |
-
1994
- 1994-03-08 JP JP06446494A patent/JP3450415B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07242458A (en) | 1995-09-19 |
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