JPH0641393B2 - Porous ceramic plate, water-permeable pavement plate and sound absorbing plate - Google Patents
Porous ceramic plate, water-permeable pavement plate and sound absorbing plateInfo
- Publication number
- JPH0641393B2 JPH0641393B2 JP63241652A JP24165288A JPH0641393B2 JP H0641393 B2 JPH0641393 B2 JP H0641393B2 JP 63241652 A JP63241652 A JP 63241652A JP 24165288 A JP24165288 A JP 24165288A JP H0641393 B2 JPH0641393 B2 JP H0641393B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- plate
- particle size
- ceramic particles
- water
- 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
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はセラミックス原料を造粒後整粒したセラミック
ス粒子をガラス質結合剤により結合したセラミックス多
孔板、透水性舗装板及び吸音板に関するものである。TECHNICAL FIELD The present invention relates to a ceramic porous plate, a water-permeable pavement plate, and a sound-absorbing plate in which ceramic particles obtained by granulating a ceramic raw material and then sized are bonded by a vitreous binder. is there.
（従来の技術） セラミックスの破片を水ガラスにより結合したセラミッ
クス多孔板は従来より吸音板として広く用いられ、また
例えば特公昭６２−２０３２１号公報に示されているよ
うに透水性舗装板等として従来から知られている。とこ
ろがこのような従来のセラミックス多孔板は、セラミッ
クス粒子の形状が不定形であるうえに粒度分布が広く、
更にセラミックス粒子の表面が滑らかではないために、
特に透水性舗装板として使用すると短期間に目詰まりを
生じ、また水洗等による目詰まりの復元性も悪いという
問題点があった。(Prior Art) A ceramic perforated plate in which pieces of ceramics are bonded by water glass has been widely used as a sound absorbing plate, and as a conventional water permeable pavement plate as disclosed in, for example, Japanese Patent Publication No. 62-20321. Known from. However, in such a conventional ceramic porous plate, the shape of the ceramic particles is indefinite and the particle size distribution is wide,
Furthermore, because the surface of the ceramic particles is not smooth,
In particular, when used as a water-permeable pavement plate, there was a problem that clogging occurred in a short period of time and the restoration property of clogging due to washing with water was poor.
（発明が解決しようとする課題） 本発明は上記したような従来の問題点を解決して、透水
性能、目詰まりの復元性、強度等の各特性に優れたセラ
ミックス多孔板及びこれを利用した透水性舗装板、吸音
板を提供するために完成されたものである。(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and uses a ceramic porous plate having excellent properties such as water permeability, restoration of clogging, and strength, and the same. It was completed to provide water-permeable pavement boards and sound-absorbing boards.
（課題を解決するための手段） 上記の課題は、セラミックス粒子をガラス質結合剤によ
り結合したセラミックス多孔板であって、セラミックス
粒子はセラミックス粉末を造粒して得られたもので平均
粒径の±30％以内の粒度範囲内に全体の95％以上が含ま
れるように整粒された球状粒子であり、かつ各セラミッ
クス粒子はガラス化された平滑な表面を備えており、更
にガラス質結合剤としてセラミックス粒子と熱膨張係数
が同等か小さい等しいガラス質結合剤を用いたことを特
徴とするセラミックス多孔板によって解決される。(Means for Solving the Problem) The above problem is a ceramic porous plate in which ceramic particles are bonded by a vitreous binder, and the ceramic particles are obtained by granulating ceramic powder, Spherical particles that have been sized so that 95% or more of the total is included within the particle size range of ± 30%, and each ceramic particle has a vitrified smooth surface. Is solved by a ceramic porous plate characterized by using a glassy binder having a thermal expansion coefficient equal to or smaller than that of the ceramic particles.
またこのようなセラミックス多孔板の表面に、着色顔料
を含有した平均粒径がより細かいセラミックス粒子から
なる表面層を固着形成すれば、透水性舗装板としてより
好ましいものとなる。更にまた、これらはいずれも吸音
板としても用いることができる。なお、セラミックス粒
子の平均粒径の±50％以内の粒度範囲内に全体の95％以
上が含まれるものは特に吸音板として好ましいものであ
る。Further, if a surface layer made of ceramic particles containing a color pigment and having a smaller average particle diameter is fixedly formed on the surface of such a porous ceramic plate, it becomes more preferable as a water-permeable pavement plate. Furthermore, any of these can also be used as a sound absorbing plate. It is to be noted that those having 95% or more of the total within the particle size range of ± 50% of the average particle size of the ceramic particles are particularly preferable as the sound absorbing plate.
（作用） 上記のように構成された本発明のセラミックス多孔板
は、セラミックス粉末を造粒して得られたセラミックス
粒子の粒径を平均粒径の±30％以内の粒度範囲内に全体
の95％以上が含まれるように揃えるとともにその形状を
球状としたものであるから、セラミックス粒子は相互に
点接触に近い状態にあり、またその相互間に形成される
気孔の大きさ及び分布がほぼ均一化されて水等が通過し
易い状態となっている。しかも本発明においては各セラ
ミックス粒子の表面がガラス質結合剤によりコーディン
グされてガラス化された平滑な表面となっているので特
に透水性に優れ、またごみやほこり、その他微細な土石
類による目詰まりが生じにくいうえに、仮に目詰まりが
生じた場合にも水洗等によって容易に目詰まりを解消す
ることができ、目詰まりの復元性が極めて良好である。
更に本発明においてはセラミックス粒子と熱膨張係数が
同等か小さいガラス質結合剤を用いているため、焼成時
にも使用時にもセラミックス粒子とこれを結合している
ガラス質結合剤とは一体的に膨張収縮し、特にセラミッ
クス粒子の熱膨張係数よりガラス質結合剤の熱膨張係数
が小さいと焼成後セラミックス粒子に圧縮力が作用する
ので特に好ましいものであり、いずれにしても内部に熱
応力によるクラックを発生しない。従って本発明のセラ
ミックス多孔板は強度が大きく、舗装板として曲げ強度
等が作用する状態で使用しても破損するおよれがないも
のである。(Operation) The ceramic porous plate of the present invention configured as described above, the particle size of the ceramic particles obtained by granulating the ceramic powder is 95% of the total within the particle size range of ± 30% of the average particle size. %, The ceramic particles are in a state of being close to point contact with each other, and the size and distribution of the pores formed between them are almost uniform. It has been turned into a state where water and the like can easily pass through. Moreover, in the present invention, the surface of each ceramic particle is a vitrified smooth surface that is coded with a vitreous binder, so that it is particularly excellent in water permeability, and is clogged with dust, dirt, and other fine debris. In addition, the clogging is less likely to occur, and even if the clogging occurs, the clogging can be easily eliminated by washing with water and the restoration property of the clogging is extremely good.
Further, in the present invention, since the vitreous binder having a thermal expansion coefficient equal to or smaller than that of the ceramic particles is used, the ceramic particles and the vitreous binder that binds the ceramic particles are integrally expanded during firing and during use. Shrinkage, especially if the coefficient of thermal expansion of the glassy binder is smaller than the coefficient of thermal expansion of the ceramic particles, it is particularly preferable because the compressive force acts on the ceramic particles after firing, in any case cracks due to thermal stress inside Does not occur. Therefore, the ceramic porous plate of the present invention has a high strength and is not damaged even if it is used as a pavement plate in a state where bending strength or the like acts.
更に上記のセラミックス多孔板の表面に、着色顔料を含
有したセラミックス粉末を造粒して得られた平均粒径が
より細かいセラミックス粒子からなる表面層を固着形成
したものは、内部へのごみ等の侵入をこの表面層が防止
するので目詰まり防止効果に優れ、またこの表面層の目
詰まりは水洗及び降雨等によって容易に除去できるから
目詰まりの復元性も一段と向上する。しかもこの着色さ
れた表面層は外観が美しく、透水性舗装板として使用す
れば道路等の美観を高めることができ、更に表面が摩耗
しても退色が全くなく、また吸音板として用いれば屋内
外の美観を高めることができる。Further, on the surface of the above-mentioned ceramic porous plate, a surface layer consisting of ceramic particles having a finer average particle diameter obtained by granulating ceramic powder containing a color pigment is firmly formed, Since this surface layer prevents invasion, it has an excellent effect of preventing clogging. Further, since clogging of this surface layer can be easily removed by washing with water or rainfall, the restoration property of clogging is further improved. Moreover, this colored surface layer has a beautiful appearance, and if it is used as a water-permeable pavement board, it can enhance the aesthetics of roads, etc. Furthermore, even if the surface is worn, it does not fade, and if it is used as a sound absorbing board, it can be used indoors and outdoors. The aesthetics of can be enhanced.
なお、セラミックス粒子の粒径のばらつきが前記した範
囲よりも大きくなるセラミックス多孔板の内部の空隙率
が小さくなり、透水性や吸音性が低下することとなるの
で好ましくない。It should be noted that the variation in the particle size of the ceramic particles is larger than the above range, the porosity inside the ceramic porous plate becomes small, and the water permeability and the sound absorbing property are deteriorated, which is not preferable.
次に本発明の好ましい実施例を示す。Next, a preferred embodiment of the present invention will be described.
（実施例） 実施例１ SiO260〜70％、Al2O320〜24％、K2O＋Na2O3.5〜5.5％、
Fe2O32.0％以下、TiO2１％以下、CaO0.5％以下、MgO0.5
％以下、Igloss5.5〜9.5％の組成となるように窯業原料
及び汚泥を調合し、水分が12〜18％となるように水を添
加して混練したうえで直径が0.6〜５mmのある値、例え
ば2.7mmの直径のヌードル状となるように押し出した。
これを切断し造粒機によって造粒したうえ粒度調整して
平均粒径が2.7mm、±30％以内（1.9〜3.5mmの範囲内）
に全体の95％以上が含まれるようにした。これをサヤに
詰めて1100〜1300℃の温度で焼成してセラミックス粒子
を得た。これの熱膨張係数は0.49×10-5〜0.54×10-5／
℃（40〜650℃）である。このようなセラミックス粒子1
00重量部に対しガラス質結合剤を10〜20重量部、保型剤
を２〜３重量部混合して板状に成形した。カラス質結合
剤はSiO260〜70％、Al2O315〜20％、K2O＋Na2O20〜30
％、CaO＋MgO１〜５％の組成のもので、その熱膨張係数
は0.37×10-5〜0.43×10-5／℃（40〜650℃）でセラミ
ックス粒子の熱膨張係数より小さいものである。このよ
うな成形体を1100〜1300℃で焼成してセラミックス多孔
板を得た。(Example) Example 1 SiO 2 60~70%, Al 2 O 3 20~24%, K 2 O + Na 2 O3.5~5.5%,
Fe 2 O 3 2.0% or less, TiO 2 1% or less, CaO 0.5% or less, MgO0.5
% Or less, Igloss 5.5-9.5% composition of ceramic raw materials and sludge, and water with a content of 12-18% is added and kneaded with a diameter of 0.6-5 mm For example, it was extruded into a noodle shape having a diameter of 2.7 mm.
This is cut and granulated with a granulator and the particle size is adjusted to an average particle size of 2.7 mm, within ± 30% (within the range of 1.9 to 3.5 mm)
To contain more than 95% of the total. This was packed in a sheath and fired at a temperature of 1100-1300 ° C to obtain ceramic particles. The coefficient of thermal expansion of this is 0.49 × 10 -5 〜 0.54 × 10 -5 /
℃ (40 ~ 650 ℃). Such ceramic particles 1
10 to 20 parts by weight of a vitreous binder and 2 to 3 parts by weight of a shape retention agent were mixed with 00 parts by weight to form a plate. The glassy binder is SiO 2 60-70%, Al 2 O 3 15-20%, K 2 O + Na 2 O 20-30
%, CaO + MgO 1-5%, and its coefficient of thermal expansion is 0.37 × 10 −5 to 0.43 × 10 −5 / ° C. (40 to 650 ° C.), which is smaller than that of ceramic particles. Such a molded body was fired at 1100-1300 ° C. to obtain a ceramic porous plate.
このセラミックス多孔板はガラス質結合剤によって各セ
ラミックス粒子の表面がコーティングされて平滑なガラ
ス状の表面となっていること、各粒子間に形成される気
孔の大きさがほぼ均一化されていることによって透水性
に優れ、また目詰まりの復元性も極めて良好なものであ
り、このセラミックス多孔板は強度も大きい。またセラ
ミックス粒子の平均粒径の±50％以内の粒度範囲内に全
体の95％以上が含まれているものは気孔分布も広く特に
吸音板として好ましいものである。The surface of each ceramic particle is coated with a vitreous binder on this ceramic porous plate to form a smooth glassy surface, and the pores formed between the particles are almost uniform in size. Therefore, the water permeability is excellent, and the restoration property of clogging is also very good, and this ceramic porous plate has high strength. Further, those having 95% or more of the whole within the particle size range of ± 50% of the average particle size of the ceramic particles have a wide pore distribution and are particularly preferable as a sound absorbing plate.
実施例２ SiO260〜70％、Al2O317〜20％、K2O＋Na20５〜７％、Fe
2O31.0％以下、TiO20.6％以下、CaO0.6％以下、MgO0.3
％以下、Igloss４〜６％の組成に顔料を３％以下の比率
で添加した原料を用い、実施例１と同様の手順により平
均粒径が1.3mm、±30％以内の粒度範囲内に全体の96％
以上が含まれるセラミックス粒子（熱膨張係数0.55×10
-5〜0.64×10-5／℃）を得た。このセラミックス粒子を
ガラス質結合剤と混練して枠の下面に充填し、その上面
に実施例１のセラミックス粒子を充填したうえプレスす
ることにより、表面に平均粒径がより細かいセラミック
ス粒子からなる着色層が形成された透水性舗装板を得
た。この透水性舗装板は透水性に優れるとともにごみ等
が内部に入りにくく、またごみ等により目詰まるが生じ
る場合にも水洗によって容易に目詰まりを復元させるこ
とができる。Example 2 SiO 2 60~70%, Al 2 O 3 17~20%, K 2 O + Na 2 05~7%, Fe
2 O 3 1.0% or less, TiO 2 0.6% or less, CaO 0.6% or less, MgO 0.3
% Or less, and a composition with an Igloss of 4 to 6% and a pigment added at a ratio of 3% or less, the same procedure as in Example 1 was performed to obtain an average particle size of 1.3 mm, and a total particle size within ± 30%. 96%
Ceramic particles containing the above (coefficient of thermal expansion 0.55 × 10
-5 to 0.64 x 10 -5 / ° C) was obtained. The ceramic particles are kneaded with a vitreous binder to fill the lower surface of the frame, and the upper surface thereof is filled with the ceramic particles of Example 1 and then pressed, so that the surface is colored with finer ceramic particles. A layered permeable pavement board was obtained. This water-permeable pavement board is excellent in water permeability, dust is difficult to enter inside, and even when clogging occurs due to dust and the like, the clogging can be easily restored by washing with water.
（発明の効果） 本発明は以上に説明したとおり、セラミックス粉末を造
粒して得られた粒度を均一化された球状のセラミックス
粒子をガラス質結合剤により結合したものであるから気
孔の大きさ及び分布が均一化されていること、セラミッ
クス粒子が相互に点接触に近い状態にあること、各セラ
ミックス粒子の表面がガラス化されていること等の理由
によって透水性が良好で目詰まりが生じ難く、また目詰
まりの復元性にも優れたものである。更に本発明によれ
ばガラス質結合剤の熱膨張係数がセラミックス粒子と同
等か小さいので、セラミックス粒子への圧縮応力等によ
って強度も大きいセラミックス多孔板が得られることと
なる。よって本発明は従来の問題点を一掃したセラミッ
クス多孔板、透水性舗装板及び吸音板として、産業の発
展に寄与するところは極めて大である。(Effects of the Invention) As described above, the present invention is one in which spherical ceramic particles having a uniform particle size, which are obtained by granulating ceramic powder, are bonded by a vitreous binder. And the distribution is uniform, the ceramic particles are close to point contact with each other, and the surface of each ceramic particle is vitrified, so that water permeability is good and clogging is less likely to occur. Moreover, it is also excellent in the restoration property of clogging. Further, according to the present invention, since the thermal expansion coefficient of the vitreous binder is equal to or smaller than that of the ceramic particles, it is possible to obtain a ceramic porous plate having high strength due to the compressive stress applied to the ceramic particles. Therefore, the present invention greatly contributes to industrial development as a ceramic porous plate, a water-permeable pavement plate, and a sound-absorbing plate that have eliminated the conventional problems.
Claims (3)
結合したセラミックス多孔板であって、セラミックス粒
子はセラミックス粉末を造粒して得られたもので平均粒
径の±30％以内の粒度範囲内に全体の95％以上が含まれ
るように整粒された球状粒子であり、かつ各セラミック
ス粒子はガラス化された平滑な表面を備えており、更に
ガラス質結合剤としてセラミックス粒子と熱膨張係数が
同等か小さいガラス質結合剤を用いたことを特徴とする
セラミックス多孔板。1. A ceramic perforated plate in which ceramic particles are bonded by a vitreous binder, wherein the ceramic particles are obtained by granulating ceramic powder, and are within a particle size range of ± 30% of the average particle size. Spherical particles that have been sized to contain 95% or more of the whole, and each ceramic particle has a vitrified and smooth surface, and has the same coefficient of thermal expansion as the ceramic particles as a vitreous binder. A porous ceramic plate characterized by using a small vitreous binder.
面に、着色顔料を含有した平均粒径がより細かいセラミ
ックス粒子からなる表面層が固着形成されていることを
特徴とする透水性舗装板。2. A water-permeable pavement plate, characterized in that a surface layer made of ceramic particles containing a color pigment and having a smaller average particle size is fixedly formed on the surface of the ceramic porous plate according to claim 1. .
結合した吸音板であって、セラミックス粒子はセラミッ
クス粉末を造粒して得られたもので平均粒径の±50％以
内の粒度範囲内に全体の95％以上が含まれるように整粒
された球状粒子であり、かつ各セラミックス粒子はガラ
ス化された平滑な表面を備えており、更にガラス質結合
剤としてセラミックス粒子と熱膨脹係数が同等か小さい
ガラス質結合剤を用いたことを特徴とする吸音板。3. A sound absorbing plate in which ceramic particles are bonded by a vitreous binder, wherein the ceramic particles are obtained by granulating ceramic powder, and are entirely within a particle size range within ± 50% of the average particle size. Spherical particles that have been sized to contain 95% or more of each of them, and each ceramic particle has a vitrified and smooth surface, and has a thermal expansion coefficient equal to or smaller than that of the ceramic particle as a vitreous binder. A sound absorbing plate characterized by using a vitreous binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63241652A JPH0641393B2 (en) | 1988-09-27 | 1988-09-27 | Porous ceramic plate, water-permeable pavement plate and sound absorbing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63241652A JPH0641393B2 (en) | 1988-09-27 | 1988-09-27 | Porous ceramic plate, water-permeable pavement plate and sound absorbing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0292878A JPH0292878A (en) | 1990-04-03 |
| JPH0641393B2 true JPH0641393B2 (en) | 1994-06-01 |
Family
ID=17077503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63241652A Expired - Lifetime JPH0641393B2 (en) | 1988-09-27 | 1988-09-27 | Porous ceramic plate, water-permeable pavement plate and sound absorbing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641393B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0653628B2 (en) * | 1990-10-20 | 1994-07-20 | 日本碍子株式会社 | Method for manufacturing porous ceramic compact |
| JP2007186410A (en) * | 2005-12-16 | 2007-07-26 | Mino Ceramic Co Ltd | Air permeable porous body and gas purifying column |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62191480A (en) * | 1986-02-14 | 1987-08-21 | 株式会社クボタ | Porous sintered body |
| JPS62278175A (en) * | 1986-05-27 | 1987-12-03 | 三菱重工業株式会社 | Manufacture of porous ceramics |
-
1988
- 1988-09-27 JP JP63241652A patent/JPH0641393B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0292878A (en) | 1990-04-03 |
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