JPH0547377B2 - - Google Patents
Info
- Publication number
- JPH0547377B2 JPH0547377B2 JP58118247A JP11824783A JPH0547377B2 JP H0547377 B2 JPH0547377 B2 JP H0547377B2 JP 58118247 A JP58118247 A JP 58118247A JP 11824783 A JP11824783 A JP 11824783A JP H0547377 B2 JPH0547377 B2 JP H0547377B2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- slurry
- parts
- formwork
- injection pipe
- 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
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- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Description
従来、軽量気泡コンクリートの製造方法におい
て、軽量気泡コンクリート原料スラリーをミキサ
ーにて攪拌後、型枠へ注入する間に空気泡が混入
する事により製品の表面及び内部に粗大な空洞を
生じ、外観不良等の問題を生じていた。この一つ
の発生原因は、注入中の経路において、空気の存
在する個所における乱流状態の発生によるもので
あつた。
また、これを防止するために、注入収量後、型
枠内に棒状バイブレーターを挿入し、振動加速度
を与える事によつて外観が良くなる事は知られて
いたが、振動加速度を与える時間が長過ぎる場
合、原料中の発砲剤の反応速度が早くなつた場合
などには、生成された気泡が破壊されて、発砲高
さが低くなり、製品の比重が高くなり過ぎる欠点
があつた。
本発明の目的は、この問題を解決した軽量気泡
コンクリートの製造方法を提供することである。
本発明の軽量気泡コンクリートの製造方法は、
軽量気泡コンクリート原料スラリーをミキサーよ
り型枠に注入する際、注入管の先端を型枠の下方
まで挿入すると共に、ミキサーから注入管先端ま
での途中の経路中もしくは注入管先端の注入口付
近において、スラリーに振動加速度を与えながら
注入するとを特徴とする製造方法である。
このように本発明は、乱流発生位置、具体的に
は注入配管中又は注入口付近のスラリーに振動加
速度を与えることにより、混入する気泡を除去し
つつ、型枠へスラリーを注入するものであり、振
動加速度をスラリーに与える地点は、乱流が発生
し易い配管の曲がつた地点もしくは注入管より型
枠へ流出する地点（注入口と表現する）が効果的
である。
振動加速度の与え方は、棒状バイブレーターを
用い直接スラリーに加速度を与えるもの、又は、
バイブレーターで板等を振動させ、板がスラリー
に加速度を与える直接方式が好ましい。
本発明の優れた特徴は、第一に、振動加速度を
与える設備が、注入設備と一体になつて組み込ま
れるため、新たなプロセスを必要とせず、設備自
体が簡単である事、第二に、発砲剤の反応が開始
する前に振動加速度を与えるため、発砲剤により
生成した気泡を全く破壊しない事、第三に振動加
速度を加えられ脱泡されたスラリーが型枠内へ広
がるため、効果が広範囲になる事である。
次に本発明の効果を第１図によつて具体的に説
明する。使用したスラリーは、それぞれ重量部
で、珪石粉砕物60部、生石灰10部、普通ポルトラ
ンドセメント30部の混合物100部に対して、水を
70部加え、発砲剤を固形物に対し0.07部加えて混
合した。このスラリーをミキサー１に接続した注
入管３を通じ、型枠４（1.5m巾、6.0m長、0.7m
高さ）に型枠底部付近より注入した。この際、本
発明ではバイブレーター６を注入口下に支持枠５
に支持させて３本配置し、約３分間の注入中に振
動加速度を与えた。また、比較のため、バイブレ
ーターを使用しないもの、注入終了後、振動加速
度を60秒、及び３分間与えたものを製造した。使
用したバイブレーターは振動数12000回／min、
振幅２×10-3、振動加速度5G（実測値）のもので
ある。
また、これらのスラリーは、硬化、養生後、巾
方向の中央部で切断し、空気泡径を測定し、空気
泡混入量係数を算出した。この空気泡混入量係数
とは、空気泡径を、2m／ｍ以上3m／ｍ未満、
3m／ｍ以上5m／ｍ未満、5m／ｍ以上7m／ｍ未
満、7m／ｍ以上10m／ｍ未満、10m／ｍ以上に
分類は、計数し、それぞれ５，16，36，64，100
を乗じ、総和したものであつて、空気泡混入量の
度合を示し、空気泡混入量が多い程、高い値を示
すものである。この結果を表１に示した。
また、空気泡混入量計数は注入口から1mの区
間をエリアＡ、2m以後をエリアＢと区別し、発
泡高さは注入口をＣ地点、注入口から0.5m離れ
た地点をＤ地点、注入口から1m離れた地点をＥ
地点と区別した。
Conventionally, in the manufacturing method of lightweight cellular concrete, after stirring the lightweight cellular concrete raw material slurry in a mixer and injecting it into the formwork, air bubbles were mixed in, creating rough cavities on the surface and inside of the product, resulting in poor appearance. This caused problems such as: One cause of this was the occurrence of turbulent flow conditions at locations where air was present in the path during injection. In addition, in order to prevent this, it is known that the appearance can be improved by inserting a rod-shaped vibrator into the mold and applying vibration acceleration after the injection is completed, but the time required to apply vibration acceleration is long. If the reaction rate of the foaming agent in the raw material is too high, the generated bubbles will be destroyed, resulting in a low foam height and a product with too high specific gravity. An object of the present invention is to provide a method for producing lightweight cellular concrete that solves this problem. The method for producing lightweight aerated concrete of the present invention includes:
When injecting lightweight aerated concrete raw material slurry into the formwork from the mixer, insert the tip of the injection pipe to the bottom of the formwork, and at the same time insert the tip of the injection pipe into the middle of the path from the mixer to the tip of the injection pipe or near the injection port at the tip of the injection pipe. This manufacturing method is characterized by injecting the slurry while applying vibrational acceleration. In this way, the present invention injects the slurry into the formwork while removing air bubbles by applying vibrational acceleration to the slurry at the location where turbulence occurs, specifically in the injection pipe or near the injection port. Therefore, it is effective to apply vibrational acceleration to the slurry at a curved point in the piping where turbulence is likely to occur or at a point where it flows out from the injection pipe into the formwork (expressed as an injection port). The vibration acceleration can be applied directly to the slurry using a rod-shaped vibrator, or
A direct method in which a plate or the like is vibrated with a vibrator and the plate applies acceleration to the slurry is preferred. The outstanding features of the present invention are, firstly, that the equipment for giving vibration acceleration is integrated with the injection equipment, so no new process is required and the equipment itself is simple; secondly, Since the vibration acceleration is applied before the reaction of the foaming agent starts, the bubbles generated by the foaming agent are not destroyed at all. Thirdly, the slurry that is defoamed by the vibrational acceleration is spread into the formwork, making it more effective. It is a wide range of things. Next, the effects of the present invention will be specifically explained with reference to FIG. The slurry used was made by adding water to 100 parts of a mixture of 60 parts of crushed silica, 10 parts of quicklime, and 30 parts of ordinary Portland cement.
70 parts were added, and 0.07 parts of a foaming agent was added to the solids and mixed. This slurry is poured into the formwork 4 (1.5m wide, 6.0m long, 0.7m long) through the injection pipe 3 connected to the mixer 1.
height) from near the bottom of the formwork. At this time, in the present invention, the vibrator 6 is placed under the support frame 5.
Three tubes were placed with support from each other, and vibrational acceleration was applied during the injection for about 3 minutes. For comparison, we produced samples without using a vibrator, and samples in which vibration acceleration was applied for 60 seconds and 3 minutes after the injection was completed. The vibrator used has a frequency of 12000 times/min.
The amplitude is 2×10 -3 and the vibration acceleration is 5G (actual measurement). After curing and curing, these slurries were cut at the center in the width direction, the air bubble diameter was measured, and the air bubble inclusion coefficient was calculated. This air bubble inclusion coefficient refers to the air bubble diameter of 2 m/m or more and less than 3 m/m,
Classifications of 3m/m or more and less than 5m/m, 5m/m or more and less than 7m/m, 7m/m or more and less than 10m/m, and 10m/m or more are counted and are 5, 16, 36, 64, and 100, respectively.
It shows the degree of the amount of air bubbles mixed in, and the larger the amount of air bubbles mixed in, the higher the value. The results are shown in Table 1. In addition, for counting the amount of air bubbles mixed in, the area 1 m from the injection port is classified as Area A, and the area after 2 m is classified as Area B, and the foaming height is determined by the injection port at point C, the point 0.5 m away from the injection port at point D, and the foam height at point C. E at a point 1m away from the entrance
Distinguished from location.
【表】
ただし、空気泡混入計数は、一ケタ目を四捨五
入し、発泡高さは、小数点以下一ケタ目を四捨五
入した。
これから、本発明の効果が非常に大きい事、ま
た効果の範囲が広い事、発泡剤により生成された
気泡が破壊されないため、発泡高さが変わらない
事が得られた。
実施例 １
第１図および第２図で示される注入設備を用
い、スラリーとして、それぞれ、重量部で、珪石
粉砕物45部、生石灰６部、普通ポルトランドセメ
ント27部、回収屑20部、石膏２部の混合物100部
に対し、水を70部加え、さらに発泡剤を固型物に
対し、0.07部を加えたものを用いた。使用したバ
イブレーター６は３本であり、各々、振動数
12000回／min、振幅２×10-3、振動加速度5G（実
測値）である。ミキサー１において攪拌されたス
ラリーは、約３分間を要し、型枠４へ注入される
が、その間、振動加速度を与え続けた。注入終了
後、セツトされた注入管３はワイヤ７，７′によ
り、支え柱２、滑車８を介して上方へ移動し、発
泡・硬化過程へ悪影響を与えない様にした。この
製品を硬化後、巾方向中央部にて切断し、空気泡
混入計数を測定し、m2当り16という好結果が得ら
れた。
実施例 ２
第３図および第４図で示される注入配管３内に
バイブレーター６が組み込まれた注入設備を用
い、スラリーとしてそれぞれ重量部で、珪石粉砕
物45部、生石灰６部、普通ポルトランドセメント
27部、回収屑20部、石膏２部の混合物100部に対
し、水を70部加え、さらに発泡剤を固型物に対
し、0.07部を加えたものを用いた。使用したバイ
ブレーター６は２本であり、各々、振動数12000
回／min、振幅２×10-3、振動加速度5G（実測値）
である。ミキサーにおいて攪拌されたスラリー
は、約３分間を要し、型枠４に注入されるが、そ
の間、振動加速度を与え続けた。注入終了後セツ
トされた注入管３は上方へ移動し、発泡・硬化過
程へ悪影響を与えない様にした。この製品を硬化
後、巾方向中央部にて切断し、空気泡混入係数を
測定し、m2当り105という好結果が得られた。
以上の各実施例に示した本発明の効果を以下に
纏める。
即ち、本発明によれば、注入管から出る前、も
しくは注入管の出口部近辺で大きな気泡が除去さ
れるので、注入管から流出して型枠一杯に拡がつ
たスラリーは型枠内のどの部分にも大きな気泡の
混入がなく、またどの型枠の箇所でも気泡高さが
均一になるという効果を生じ、型枠に注入した後
のスラリーに振動を与えて大きな気泡を除去する
従来技術の場合には型枠中の多数の箇所で振動を
与える必要があり、振動を与える時期の差により
製品物性にバラツキを生じていたが、本発明では
かかるバラツキを生じることもない。
また、従来の型枠に注入した後のスラリーに振
動を与える場合は型枠中の多くの箇所で振動を与
える必要があり、型枠全面にわたり多数の振動装
置を必要とするという複雑な製造装置が必要とな
るが、本発明では振動装置を注入装置と一体に組
み込むことができ、装置が簡単になるという効果
も発揮する。[Table] However, the air bubble inclusion count was rounded off to the first digit, and the foaming height was rounded off to the first decimal place. From this, it was found that the effect of the present invention is very large, that the range of effect is wide, and that the foaming height does not change because the bubbles generated by the foaming agent are not destroyed. Example 1 Using the injection equipment shown in FIGS. 1 and 2, the slurry was prepared by weight: 45 parts of crushed silica stone, 6 parts of quicklime, 27 parts of ordinary Portland cement, 20 parts of recovered waste, and 2 parts of gypsum. 70 parts of water was added to 100 parts of the mixture, and 0.07 part of a foaming agent was added to the solid material. Three vibrators 6 were used, each with a different frequency.
12000 times/min, amplitude 2×10 -3 , vibration acceleration 5G (actual measurement). It took about 3 minutes for the slurry stirred in the mixer 1 to be poured into the mold 4, during which time vibration acceleration was continued. After the injection is completed, the set injection tube 3 is moved upward via the support column 2 and pulley 8 by the wires 7 and 7' so as not to adversely affect the foaming and curing process. After curing, this product was cut at the center in the width direction and the number of air bubbles mixed in was measured, and a good result of 16 per m 2 was obtained. Example 2 Using injection equipment in which a vibrator 6 was built into the injection pipe 3 shown in FIGS. 3 and 4, 45 parts of crushed silica, 6 parts of quicklime, and ordinary Portland cement were prepared as slurry by weight.
To 100 parts of a mixture of 27 parts, 20 parts of recovered waste, and 2 parts of gypsum, 70 parts of water was added, and 0.07 part of a foaming agent was added to the solid material. Two vibrators 6 were used, each with a frequency of 12000.
times/min, amplitude 2×10 -3 , vibration acceleration 5G (actual measurement value)
It is. The slurry stirred in the mixer took about 3 minutes to be poured into the mold 4, during which time vibration acceleration was continued. After the injection was completed, the set injection tube 3 was moved upward so as not to adversely affect the foaming and curing process. After curing, this product was cut at the center in the width direction and the air bubble inclusion coefficient was measured, and a good result of 105 per m 2 was obtained. The effects of the present invention shown in each of the above embodiments are summarized below. That is, according to the present invention, large air bubbles are removed before exiting the injection tube or near the outlet of the injection tube, so that the slurry that has flowed out of the injection tube and has spread to fill the mold will not be absorbed anywhere in the mold. There are no large air bubbles mixed in at any part of the mold, and the height of the air bubbles is uniform at all parts of the mold. In some cases, it is necessary to apply vibrations at many locations in the formwork, and differences in the timing of applying vibrations have caused variations in the physical properties of the product, but the present invention does not cause such variations. In addition, when applying vibration to the slurry poured into the conventional formwork, it is necessary to apply vibrations at many points in the formwork, and the manufacturing equipment is complicated, requiring a large number of vibrating devices to cover the entire surface of the formwork. However, in the present invention, the vibration device can be integrated with the injection device, and the device can be simplified.
第１図は、本発明方法の実施に適用するミキサ
ー、型枠ならびにスラリー注入管・バイブレータ
ー配置の装置側面略図、第２図はその平面図、第
３図は他の装置例の側面略図、第４図は、その平
面図である。
１……ミキサー、２……支え柱、３……注入
管、４……型枠、５……支持枠、６……棒状バイ
ブレーター、７，７′……ワイヤー、８……滑車。
Fig. 1 is a schematic side view of the mixer, mold, and slurry injection pipe/vibrator arrangement applied to the method of the present invention; Fig. 2 is a plan view thereof; Fig. 3 is a schematic side view of another example of the apparatus; FIG. 4 is a plan view thereof. 1... Mixer, 2... Support column, 3... Injection pipe, 4... Formwork, 5... Support frame, 6... Rod-shaped vibrator, 7, 7'... Wire, 8... Pulley.
Claims (1)
ーより型枠に注入する際、注入管の先端を型枠の
下方まで挿入すると共に、ミキサーから注入管先
端までの途中の経路中もしくは注入管先端の注入
口付近において、スラリーに振動加速度を与えな
がら注入することを特徴とする軽量気泡コンクリ
ートの製造方法。1. When injecting lightweight aerated concrete raw material slurry into the formwork from the mixer, insert the tip of the injection pipe to the bottom of the formwork, and insert it into the middle of the path from the mixer to the tip of the injection pipe or near the injection port at the tip of the injection pipe. , a method for producing lightweight aerated concrete characterized by pouring slurry while applying vibration acceleration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11824783A JPS6011313A (en) | 1983-07-01 | 1983-07-01 | Manufacture of light aerated concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11824783A JPS6011313A (en) | 1983-07-01 | 1983-07-01 | Manufacture of light aerated concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6011313A JPS6011313A (en) | 1985-01-21 |
| JPH0547377B2 true JPH0547377B2 (en) | 1993-07-16 |
Family
ID=14731875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11824783A Granted JPS6011313A (en) | 1983-07-01 | 1983-07-01 | Manufacture of light aerated concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6011313A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0438965Y2 (en) * | 1986-07-22 | 1992-09-11 | ||
| US5206699A (en) * | 1988-05-06 | 1993-04-27 | Gersan Establishment | Sensing a narrow frequency band of radiation and gemstones |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5544843A (en) * | 1978-09-26 | 1980-03-29 | Nippon Steel Corp | Method of executing precast moldings and its device |
| JPS5820767A (en) * | 1981-07-27 | 1983-02-07 | 太平洋セメント株式会社 | Manufacture of lightweight foamed concrete |
-
1983
- 1983-07-01 JP JP11824783A patent/JPS6011313A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6011313A (en) | 1985-01-21 |
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