JPH0339995B2 - - Google Patents
Info
- Publication number
- JPH0339995B2 JPH0339995B2 JP59001329A JP132984A JPH0339995B2 JP H0339995 B2 JPH0339995 B2 JP H0339995B2 JP 59001329 A JP59001329 A JP 59001329A JP 132984 A JP132984 A JP 132984A JP H0339995 B2 JPH0339995 B2 JP H0339995B2
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- finishing
- concrete
- formwork
- 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 - Lifetime
Links
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Description
【発明の詳細な説明】
細骨材率が４〜９％と極端に低いおこし状コン
クリートは通水性があり、外観もよくない。[Detailed Description of the Invention] Raised concrete with an extremely low fine aggregate ratio of 4 to 9% has water permeability and does not have a good appearance.
おこし状コンクリートより構成されたPC板の
表面仕上げに一般に使用されているように練り混
ぜ直後のモルタルを用いると、本体のコンクリー
トの空隙にモルタルが流れ込み易く、製品の重量
が増大するので、仕上げ作業が困難である。 If you use freshly mixed mortar, which is generally used to finish the surface of PC boards made of concrete, the mortar will easily flow into the voids in the concrete of the main body, increasing the weight of the product. is difficult.
本発明はこのような問題点を解決するために提
案されたもので、型枠内に打設された細骨材率が
４〜９％（容積比）のおこし状コンクリートの硬
化後、脱型することなく、その上面に、モルタル
練り混ぜ後、２時間〜４時間放置して半固性状態
となつた仕上げモルタルを製造されるべきPC板
の高さより若干高めにほぼ均一に散布し、次いで
同仕上げモルタル上より押板を型枠頂面まで押圧
して、余剰の仕上げモルタルを型枠外に排除する
ことを特徴とするおこし状コンクリートより構成
されたPC板の表面仕上げ方法に係るものである。 The present invention was proposed in order to solve these problems, and after hardening of the raised concrete with a fine aggregate ratio of 4 to 9% (volume ratio) placed in the formwork, it is removed from the mold. After mixing the mortar, the finished mortar, which has been left to stand for 2 to 4 hours to become semi-solid, is sprinkled almost uniformly on the top surface of the PC board at a slightly higher level than the height of the PC board to be manufactured. This relates to a method for finishing the surface of a PC board made of raised concrete, which is characterized by pressing a pressing plate from above the finishing mortar to the top surface of the formwork to remove excess finishing mortar from the outside of the formwork. .
本発明においては前記したように、型枠内に打
設された細骨材率が４〜９％（容積比）のおこし
状コンクリートが硬化したのち脱型することな
く、その上面に、モルタル練り混ぜ後２〜４時間
放置するこおによつて半固性状態となつた仕上げ
モルタルをほぼ均一に散布するものであつて、こ
のように仕上げ用モルタルが半固性状態のため、
同モルタルのおこし状コンクリートの空隙に浸入
する量が減少され、製品重量が増大が防止され
る。 In the present invention, as described above, after the concrete with a fine aggregate ratio of 4 to 9% (volume ratio) cast in the formwork has hardened, mortar is added to the top surface of the concrete without being demolded. After mixing, the finishing mortar, which has become semi-solid by leaving it for 2 to 4 hours, is almost uniformly distributed, and because the finishing mortar is semi-solid,
The amount of mortar that permeates into the voids of the concrete is reduced, and the weight of the product is prevented from increasing.
而して前記仕上げ用モルタルは製品のPC板の
高さより若干高めとなるように、余剰に散布され
ていて、同仕上げモルタル上より押板が型枠頂面
にまで押圧されて余剰の仕上げモルタルが型枠よ
り排除されるので、表面仕上げ層はほぼ同時に均
等な力で押圧され、拘束された状態で硬化し、一
方PC板本体のおこし状コンクリートは乾燥収縮
が少ないので、仕上げモルタル層は均質となり、
ひび割れの惧れがなくなり、PC板本体コンクリ
ートに一体的に附着され、且つ普通のコンクリー
ト製品と同様の外観が得られる。 The finishing mortar is spread in excess so that it is slightly higher than the height of the PC board of the product, and the pressing plate is pressed from above the finishing mortar to the top surface of the formwork, and the excess finishing mortar is spread out. is removed from the formwork, so the surface finishing layer is pressed with uniform force almost simultaneously and hardens in a restrained state.On the other hand, since the concrete of the PC board body has little drying shrinkage, the finishing mortar layer is homogeneous. Then,
There is no fear of cracking, the PC board is integrally attached to the concrete body, and the appearance is similar to that of ordinary concrete products.
また前記仕上げモルタルを着色し、或いは質感
を変えることによつて、所要の色や質感を有する
PC板を構成できる。 Furthermore, by coloring or changing the texture of the finishing mortar, the desired color and texture can be obtained.
A PC board can be configured.
更にまた本発明によれば前記表面仕上げ作業を
PC板製作工程の一環として行なうので、工期が
短縮される等、本発明は多くの利点を有するもの
である。 Furthermore, according to the present invention, the surface finishing operation
Since this is carried out as part of the PC board manufacturing process, the present invention has many advantages, such as shortening the construction period.
以下本発明を図示の実施例について説明する。 The present invention will be described below with reference to the illustrated embodiments.
PC板製造用型枠１に打設された細骨材率が４
〜９％（容積比）のおこし状コンクリート２が硬
化したのち脱型することなく、同コンクリート２
の上面に半固性状の仕上げ用無収縮モルタル３を
最終製品のPC板の高さより若干高めに、ほぼ均
等に散布する。（第１図参照）
前記仕上げ用無収縮モルタルはおこし状コンク
リートの空隙に進入する量を減少せしめるため、
流動性をなくした半固性状態で用いられ、練り混
ぜ後、２時間〜４時間放置して半固性状態となつ
たものが使用されるものである。 The fine aggregate ratio cast in formwork 1 for PC board manufacturing is 4
After ~9% (volume ratio) of raised concrete 2 hardens, the same concrete 2 is
Spread semi-solid finishing non-shrinkage mortar 3 on the top surface of the PC board almost evenly at a height slightly higher than the height of the final product PC board. (See Figure 1) In order to reduce the amount of finishing non-shrinkage mortar that enters into the voids of the raised concrete,
It is used in a semi-solid state with no fluidity, and after kneading and mixing, it is left to stand for 2 to 4 hours to become semi-solid.
次いで押板４の下面に油を塗布するか、丈夫な
薄紙を挾んだ状態で、第２図に示すように前後左
右に少しづつ動かしながら型枠１の頂面まで一様
に押付けて、余剰な仕上げ用無収縮モルタル３を
型枠１の外部に排除するか、第３図に示すように
型枠１の一角より鉄の芯棒６に鉄板５がロール状
に捲装されたロールの同芯棒６を回転させ、余剰
の仕上げ用無収縮モルタル３を鉄板５によつて押
付け排除しながら、型枠１の頂面にまで押付ける
ものである。 Next, apply oil to the lower surface of the push plate 4, or press it uniformly to the top surface of the formwork 1 while moving it little by little from front to back and from side to side, as shown in Fig. 2, with a strong thin paper sandwiched in between. Excess non-shrinkable finishing mortar 3 is removed to the outside of the formwork 1, or as shown in Fig. The concentric rod 6 is rotated, and the excess non-shrinkable finishing mortar 3 is pressed and removed by the iron plate 5, and is pressed even to the top surface of the formwork 1.
なお押板の材質としては吸水せず、脱型時まで
変形しないものが望ましく、金属類、プラスチツ
ク類、ガラス類が使用される。 The press plate is preferably made of a material that does not absorb water and does not deform until demolding, and metals, plastics, and glass are used.
かくして前記仕上げ用無収縮モルタル３が硬化
すると脱型する。押板の開蓋は慎重に行ない、前
記モルタル３が押板に附着しないようにする。 When the finishing non-shrinkage mortar 3 is cured, it is demolded. The cover of the push plate should be opened carefully to prevent the mortar 3 from adhering to the push plate.
次に本発明に使用されるおこし状コンクリート
の配合例を挙げる。 Next, an example of the formulation of the raised concrete used in the present invention will be given.
早強セメント 285Kg
細骨材 33.4 62Kg
粗骨材 634.6 895Kg
細骨材率 ５％
水セメント比 35％
増量剤 400
流動剤 2500c.c.
（註１） 骨材は人工軽量骨材、ビルトン（商品
名：膨脹頁岩を焼成粉砕したもの、住友金属鉱
山株式会社製造）を使用した。 Early strength cement 285Kg Fine aggregate 33.4 62Kg Coarse aggregate 634.6 895Kg Fine aggregate ratio 5% Water-cement ratio 35% Bulking agent 400 Flow agent 2500c.c. (Note 1) The aggregate is artificial lightweight aggregate, Bilton (product name) : Expanded shale calcined and crushed (manufactured by Sumitomo Metal Mining Co., Ltd.) was used.
（註２） 増量材はパーライトＣ種を軽詰状態で
使用した。(Note 2) Perlite C type was used as the filler in a lightly packed state.
（註３） 流動化剤はマイテイFD（商品名：ナフ
タリンスルフオン酸塩を主成分とする界面活性
剤（花王石鹸株式会社製造）を使用した。(Note 3) As the fluidizing agent, Mighty FD (trade name: a surfactant whose main component is naphthalene sulfonate (manufactured by Kao Soap Co., Ltd.) was used.
流動化剤は水セメント比を少なくし、しかも
粗骨材を囲繞するモルタル量を或る程度均等に
するために使用した。 The fluidizing agent was used to reduce the water-cement ratio and to make the amount of mortar surrounding the coarse aggregate more or less uniform.
（註４） 容積は絶対容量、重量は表乾状態であ
る。粗骨材は表乾状態で用いた。(Note 4) Volume is absolute capacity, weight is surface dry. The coarse aggregate was used in a surface dry state.
（註５） なお、おこし状コンクリートの水セメ
ント比は28〜37％、気乾比重が1.3以下が適当
である。(Note 5) The appropriate water-cement ratio for raised concrete is 28 to 37%, and the air-dry specific gravity is 1.3 or less.
前記おこし状コンクリートの特性は下記のとお
りである。 The characteristics of the raised concrete are as follows.
スランプ 04cm
気乾比重 1.272
次に前記おこし状コンクリートの強度試験結果
を挙げる。Slump: 04 cm Air-dried specific gravity: 1.272 Next, the strength test results of the above-mentioned raised concrete are listed.
(A) 養生条件 標 準
材令１日 圧縮128Kg／cm2
材令１週 圧縮174Kg／cm2
曲げ 30Kg／cm2
材令４週 圧縮213Kg／cm2
曲げ 33Kg／cm2
附着100Kg／cm2
(B) 養生条件 蒸 気
材令１日 圧縮171Kg／cm2
材令１週 圧縮206Kg／cm2
曲げ 22Kg／cm2
材令４週 圧縮226Kg／cm2
曲げ 21Kg／cm2
以上本発明を実施例について説明したが、本発
明は勿論このような実施例にだけ局限されるもの
ではなく、本発明の精神を逸脱しない範囲内で
種々の設計の改変を施しうるものである。(A) Curing conditions Standard Age 1 day Compression 128Kg/cm 2 Age 1 week Compression 174Kg/cm 2 Bending 30Kg/cm 2 Age 4 weeks Compression 213Kg/cm 2 Bending 33Kg/cm 2 Attachment 100Kg/cm 2 ( B) Curing conditions Steam Age 1 day Compression 171 Kg/cm 2 Age 1 week Compression 206 Kg/cm 2 Bending 22 Kg/cm 4 weeks 2 Age Compression 226 Kg/cm 2 Bending 21 Kg/cm Although described above, the present invention is, of course, not limited to such embodiments, and may be modified in various ways without departing from the spirit of the present invention.
第１図乃至第３図は本発明に係るおこし状コン
クリートより構成されたPC板の表面仕上げ方法
の一実施例の工程を示す縦断面図である。
１……型枠、２……おこし状コンクリート、３
……仕上げ用無収縮モルタル、４……押板、５…
…ロール、６……芯棒。
1 to 3 are longitudinal cross-sectional views showing steps of an embodiment of the method for finishing the surface of a PC board made of raised concrete according to the present invention. 1... Formwork, 2... Raised concrete, 3
...Non-shrink mortar for finishing, 4...Press plate, 5...
...roll, 6... core rod.
Claims (1)
積比）のおこし状コンクリートの硬化後、脱型す
ることなく、その上面に、モルタル練り混ぜ後、
２時間〜４時間放置して半固性状態となつた仕上
げモルタルを製造されるべきPC板の高さより若
干高めにほぼ均一に散布し、次いで同仕上げモル
タル上より押板を型枠頂面まで押圧して、余剰の
仕上げモルタルを型枠外に排除することを特徴と
するおこし状コンクリートより構成されたPC板
の表面仕上げ方法。1 After hardening of concrete with a fine aggregate ratio of 4 to 9% (volume ratio) placed in a formwork, without removing it from the mold, after mixing mortar,
Finished mortar, which has become semi-solid after being left for 2 to 4 hours, is spread almost uniformly at a slightly higher level than the height of the PC board to be manufactured, and then a push plate is placed over the finished mortar to the top of the formwork. A method for finishing the surface of a PC board made of raised concrete, which is characterized by pressing and removing excess finishing mortar outside the formwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP132984A JPS60145976A (en) | 1984-01-10 | 1984-01-10 | Surface finishing process for pc board comprising foamed concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP132984A JPS60145976A (en) | 1984-01-10 | 1984-01-10 | Surface finishing process for pc board comprising foamed concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60145976A JPS60145976A (en) | 1985-08-01 |
| JPH0339995B2 true JPH0339995B2 (en) | 1991-06-17 |
Family
ID=11498456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP132984A Granted JPS60145976A (en) | 1984-01-10 | 1984-01-10 | Surface finishing process for pc board comprising foamed concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60145976A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2568841B2 (en) * | 1987-04-14 | 1997-01-08 | 秀晴 長田 | Method for manufacturing concrete panel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5744444A (en) * | 1980-09-01 | 1982-03-12 | Mitsui Toatsu Chem Inc | Novel resin composition for shell mold |
-
1984
- 1984-01-10 JP JP132984A patent/JPS60145976A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60145976A (en) | 1985-08-01 |
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