JPH0749713B2 - Granulated concrete spraying method - Google Patents
Granulated concrete spraying methodInfo
- Publication number
- JPH0749713B2 JPH0749713B2 JP1022170A JP2217089A JPH0749713B2 JP H0749713 B2 JPH0749713 B2 JP H0749713B2 JP 1022170 A JP1022170 A JP 1022170A JP 2217089 A JP2217089 A JP 2217089A JP H0749713 B2 JPH0749713 B2 JP H0749713B2
- Authority
- JP
- Japan
- Prior art keywords
- mixed water
- adhesive
- spraying
- concrete
- cement
- 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
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はシェル構造の施工や法面被覆等に使用される造
粒コンクリート吹付工法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a granulated concrete spraying method used for construction of shell structures, slope coating, and the like.
［従来の技術］ 従来、この種のコンクリート吹付工法としては、粗骨
材、細骨材、セメント、混和剤等を混合し、エアー圧送
して先端付近で混合水を添加して吹付ける乾式工法と、
粗骨材、細骨材、セメント、混和剤、混合水等を混合
し、ポンプ圧送し、圧送途中で急結剤等を混合して吹き
付ける湿式工法と、細骨材、セメントに混合水の一部を
添加して硬練りし、細骨材の周りにセメント成分の造核
を作成し、さらに混合水を添加してスラリー状の造核モ
ルタルを作成してエアー圧送し、圧送途中で粗骨材を混
合して付付ける造核モルタル工法とがある。[Prior Art] Conventionally, as this type of concrete spraying method, a dry method is used in which coarse aggregate, fine aggregate, cement, admixture, etc. are mixed, air-pressurized and mixed water is added near the tip and sprayed. When,
Wet method that mixes coarse aggregate, fine aggregate, cement, admixture, mixed water, etc., pumps, mixes and sprays a quick-setting agent, etc. in the middle of pressure feeding, and fine aggregate, cement mixed water Part is added and kneaded to create nucleation of the cement component around the fine aggregate, and further mixed water is added to create a nucleation mortar in the form of a slurry and air-fed, and coarse bone is fed during the feeding. There is a nucleation mortar construction method in which materials are mixed and attached.
［発明が解決しようとする課題］ しかし、従来の前記乾式工法では、コンクリート材料が
乾燥した状態で混合されており、エアー圧送の途中で混
合水を添加混合してもまざりが悪く粉塵が多かった。粉
塵の発生を防ぐために粘性の高い増粘剤を添加して吹付
けているが、コストが掛かりすぎ経済的でなかった。[Problems to be Solved by the Invention] However, in the conventional dry method, the concrete material is mixed in a dry state, and even if mixed water is added and mixed in the middle of the air pressure feeding, the mixture is bad and has a lot of dust. . In order to prevent the generation of dust, a thickening agent with high viscosity is added and sprayed, but it was too economical and not economical.
湿式工法では、コンクリート材料が混合水で十分混合さ
れているが、粘性が大きいため、エアー圧送が困難で強
いエアー圧力で圧送しなければならず、その結果粉塵の
発生が多く生じていた。In the wet method, the concrete material is sufficiently mixed with the mixed water, but since it has a high viscosity, it is difficult to feed air by air, and it has to be fed under a strong air pressure, and as a result, dust is often generated.
造核モルタル工法でも、湿式工法と同じように強いエア
ー圧力で圧送するため、粉塵の発生が多く生じていた。Even in the nucleation mortar construction method, as in the wet construction method, since the air is sent under a strong air pressure, much dust is generated.
［発明の目的］ そこで、本発明は前記問題点に着目してなされたもの
で、その目的とするところは、混合したコンクリート材
料が圧送途中で分離したり、混合不良とならないように
してエアー圧送することができ、過剰なエアー圧送によ
る粉塵の発生を防止することのできる造粒コンクリート
吹付工法を提供することにある。[Object of the Invention] Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to prevent the mixed concrete material from being separated during the pressure feeding or to cause the air pressure feeding. Another object of the present invention is to provide a granulated concrete spraying method that can prevent the generation of dust due to excessive air pressure feeding.
［課題を解決するための手段］ 本願発明に係る造粒コンクリート吹付工法は、粗骨材
及び細骨材に混和剤（接着剤ないし粘着剤を除く）を加
えてミキサーにより混合攪拌し、次いでセメントを加え
て混合攪拌して得られたドライミックスコンクリートを
造粒機に移設して混合水の一部を加えて回転操作して生
ペレットを形成し、これを吹き付け機に投入して、混合
水の残余分を投入しつつ圧搾空気により圧送し吹き付け
を行なうことを、ベルトコンベアにより粗骨材及び細
骨材の搬送途中で混和剤（接着剤ないし粘着剤を除く）
による噴霧を行なうこと、並びに、粗骨材・細骨材・
セメントを造粒機に投入し、次いで、この造粒機内に混
和剤（接着剤ないし粘着剤を除く）と混合水の一部との
混合液を噴霧しながら回転操作して生ペレットを形成
し、この生ペレットを吹き付け機に投入して、混合水の
残余分を投入しつつ圧搾空気により圧送し吹き付けを行
なうこと、をそれぞれ特徴とする。[Means for Solving the Problem] In the granulated concrete spraying method according to the present invention, an admixture (excluding an adhesive or an adhesive) is added to coarse aggregate and fine aggregate, and the mixture is mixed and stirred by a mixer, and then cement. The dry mixed concrete obtained by adding and mixing the mixture was transferred to a granulator, and a part of the mixed water was added to rotate the raw pellets to form raw pellets. While feeding the remainder of the product, it is possible to blow it by sending it under pressure by compressed air. It is an admixture (excluding adhesive or adhesive) during the transportation of coarse aggregate and fine aggregate by a belt conveyor.
Spraying, as well as coarse aggregate, fine aggregate,
Put the cement into the granulator, then rotate while spraying a mixture of the admixture (excluding adhesive or adhesive) and part of the mixed water into the granulator to form raw pellets. The raw pellets are introduced into a spraying machine, and the remainder of the mixed water is introduced into the spraying machine to carry out spraying with compressed air.
［実施例］ 以下、本発明の実施例を図面に基づいて詳細に説明す
る。Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の実施例に係る造粒コンクリート吹付工
法を示す説明図である。FIG. 1 is an explanatory view showing a granulated concrete spraying method according to an embodiment of the present invention.
粗骨材１および細骨材２に混和剤３を噴霧し、さらにセ
メント４を加え、混合ミキサ５で混合してドライミック
スコンクリート６を作成し、これを造粒機としての回転
ドラム７に定量に投入し、回転ドラム７の中心から混合
水８の一部をポンプＰを介して噴霧して生ペレット９を
作成する。次いでこの生ペレット９を吹付機10に投入し
て圧送ホース11内をエアー圧送し、圧送途中で混合水８
を添加して造粒コンクリート13を作成しつつノズル12か
ら吹付ける。The admixture 3 is sprayed on the coarse aggregate 1 and the fine aggregate 2, cement 4 is further added, and the mixture is mixed by the mixing mixer 5 to prepare the dry mix concrete 6, which is fixed on the rotary drum 7 as a granulator. Then, a part of the mixed water 8 is sprayed from the center of the rotary drum 7 via the pump P to prepare raw pellets 9. Next, the raw pellets 9 are put into the spraying machine 10 to pneumatically feed the inside of the pressure-feeding hose 11, and the mixed water 8 is fed during the pressure-feeding.
Is sprayed from the nozzle 12 while the granulated concrete 13 is added.
配合は、粗骨材800〜1200kg、細骨材500〜800kg、混和
剤０〜20kgおよびセメント350〜500kgに混合水50〜150k
gを噴霧して生ペレットを作成する。この生ペレットに1
00〜200kgの混合水を添加混合して造粒コンクリート13
を作成する。Compounding is as follows: coarse aggregate 800-1200kg, fine aggregate 500-800kg, admixture 0-20kg and cement 350-500kg, mixed water 50-150k
Spray g to make raw pellets. 1 on this raw pellet
Granulate concrete by adding mixed water of 00-200kg 13
To create.
この時のコンクリート材料は球形状の生ペレット状に造
粒され、コンクリートの圧縮強度は１日材令で150〜200
kg/cm2、28日材令で250〜400kg/cm2を示した。The concrete material at this time is granulated into a spherical raw pellet shape, and the compressive strength of the concrete is 150 to 200 at the age of 1 day.
It showed 250~400kg / cm 2 in kg / cm 2, 28 days material age.
なお、本発明は前記実施例に限定されるものではない。
例えば、この実施例では、生ペレットは粗骨材、細骨
材、セメントおよび混和剤を混合して回転ドラムに投入
し、この回転ドラム内で混合水を噴霧して作成したもの
であるが、これに限らず、生ペレットは粗骨材および細
骨材に混和剤を付着させ、セメントおよび混合水の一部
を添加混合して回転ドラムに投入し、この回転ドラム内
で残りの混合水を噴霧して作成したものでもよく、好ま
しくは粗骨剤、細骨剤、セメントを混合して回転ドラム
に投入し、この回転ドラム内で混和剤と水との混合液を
噴霧して作成したものでもよい。The present invention is not limited to the above embodiment.
For example, in this example, the raw pellets were prepared by mixing coarse aggregate, fine aggregate, cement, and admixture into a rotary drum, and spraying mixed water in the rotary drum. Not limited to this, for raw pellets, an admixture is attached to coarse aggregate and fine aggregate, a part of cement and mixed water is added and mixed, and the mixture is put into a rotating drum, and the remaining mixed water is mixed in the rotating drum. It may be prepared by spraying, preferably prepared by mixing coarse bone agent, fine bone agent and cement into a rotating drum and spraying a mixed liquid of an admixture and water in the rotating drum. But it's okay.
また、配合されるべきセメントの一部と粗骨材（細骨
材）と混合水とで骨材生ペレットを作成し、残りセメン
トと混合水あるいは残りセメントと細骨材と混合水とで
セメント生ペレットあるいはモルタル生ペレットを作成
し、このセメント生ペレットあるいはモルタル生ペレッ
トを圧送途中あるいは前記骨材生ペレットと混合圧送
し、途中で混合水を添加してなる造粒コンクリートを吹
付けることもできる。In addition, a raw aggregate pellet is prepared from a part of cement to be mixed, coarse aggregate (fine aggregate) and mixed water, and cement is formed with the remaining cement and mixed water or the remaining cement, fine aggregate and mixed water. Raw pellets or mortar raw pellets can be prepared, and the cement raw pellets or mortar raw pellets can be sprayed on the way or while being mixed with the aggregate raw pellets, and mixed water can be sprayed on the way. .
［発明の効果］ 本発明によれば、粗骨材、細骨材、セメント（一部分セ
メント）、混和剤等のコンクリート材料を造粒機にかけ
混合水の一部を噴霧して生ペレットを作成し、この生ペ
レットをエアー圧送し、圧送途中で混合水（一部分セメ
ントペースト）を添加してなる造粒コンクリートを吹き
付ける工法としたので、以下の効果を有する。[Effects of the Invention] According to the present invention, a concrete material such as coarse aggregate, fine aggregate, cement (partly cement), admixture, etc. is put into a granulator and a part of mixed water is sprayed to prepare raw pellets. Since the raw pellets are pneumatically fed and the granulated concrete obtained by adding the mixed water (partly the cement paste) is blown during the pneumatic feeding, the following effects are obtained.
（１）予めコンクリート材料を生ペレット状にしてある
ため、材料分離が生じ得ず、エアー圧送による粉塵の発
生が少ない。(1) Since the concrete material is preliminarily pelletized, the material cannot be separated, and the generation of dust due to air pressure feeding is small.
（２）回転ドラムで生ペレットを作成するため、形状が
球形であり、転がりやすく最小のエアー量で圧送するこ
とができるため粉塵の発生が少ない。(2) Since the raw pellets are produced by the rotating drum, the shape is spherical, and it is easy to roll and can be pressure-fed with the minimum amount of air, so that the generation of dust is small.
（３）生ペレットは少ない混合水で容易に生ペレット状
となり、エアー圧送による表面の剥がれが少なく混合水
の添加も少なくてすむコンクリートとなるため、コンク
リートの強度が増大する。(3) The raw pellet easily becomes a raw pellet with a small amount of mixed water, and the surface of the pellet is less likely to be peeled off by air pressure feeding.
【図面の簡単な説明】 第１図は本発明の実施例に係る造粒コンクリート吹付工
法を示す説明図である。 1:粗骨材 2:細骨材 3:混和剤 4:セメント 5:混合ミキサ 6:ドライミックスコンクリート 7:回転ドラム 8:混合水 9:生ペレット 10:吹付機 13:造粒コンクリートBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing a granulated concrete spraying method according to an embodiment of the present invention. 1: Coarse aggregate 2: Fine aggregate 3: Admixture 4: Cement 5: Mixed mixer 6: Dry mix concrete 7: Rotating drum 8: Mixed water 9: Raw pellets 10: Spraying machine 13: Granulated concrete
Claims (3)
粘着剤を除く）を加えてミキサーにより混合攪拌し、次
いでセメントを加えて混合攪拌して得られたドライミッ
クスコンクリートを造粒機に移設して混合水の一部を加
えて回転操作して生ペレットを形成し、これを吹き付け
機に投入して、混合水の残余分を投入しつつ圧搾空気に
より圧送し吹き付けを行なうことを特徴とする造粒コン
クリート吹付工法。1. A dry mix concrete obtained by adding an admixture (excluding an adhesive or an adhesive) to coarse aggregate and fine aggregate, mixing and stirring with a mixer, and then adding cement and mixing with stirring. Transfer to a granulator and add a part of the mixed water to rotate it to form raw pellets, which is then put into a spraying machine, and the remainder of the mixed water is put into it while it is fed by compressed air and sprayed. A granulated concrete spraying method characterized in that
搬送途中で混和剤（接着剤ないし粘着剤を除く）による
噴霧を行なうことを特徴とする請求項１に記載した造粒
コンクリート吹付工法。2. The granulated concrete spraying method according to claim 1, wherein spraying with an admixture (excluding an adhesive or a pressure-sensitive adhesive) is carried out during the transportation of the coarse aggregate and the fine aggregate by a belt conveyor. .
し、次いで、この造粒機内に混和剤（接着剤ないし粘着
剤を除く）と混合水の一部との混合液を噴霧しながら回
転操作して生ペレットを形成し、この生ペレットを吹き
付け機に投入して、混合水の残余分を投入しつつ圧搾空
気により圧送し吹き付けを行なうことを特徴とする造粒
コンクリート吹付工法。3. A mixture of coarse aggregate, fine aggregate and cement put in a granulator and then a mixture of an admixture (excluding an adhesive or an adhesive) and a part of mixed water in the granulator. Granulation concrete characterized by performing rotary operation while spraying to form raw pellets, throwing the raw pellets into a spraying machine, and feeding the remainder of the mixed water by pressure feed with compressed air to spray. Spraying method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022170A JPH0749713B2 (en) | 1989-01-30 | 1989-01-30 | Granulated concrete spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022170A JPH0749713B2 (en) | 1989-01-30 | 1989-01-30 | Granulated concrete spraying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02200967A JPH02200967A (en) | 1990-08-09 |
| JPH0749713B2 true JPH0749713B2 (en) | 1995-05-31 |
Family
ID=12075331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1022170A Expired - Lifetime JPH0749713B2 (en) | 1989-01-30 | 1989-01-30 | Granulated concrete spraying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749713B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19851913C2 (en) * | 1998-11-11 | 2001-02-15 | Rombold & Gfroehrer Gmbh & Co | Process for the preparation of a shotcrete or shot mortar |
| JP2019157564A (en) * | 2018-03-15 | 2019-09-19 | 有限会社中部植生 | Spray method of mortar or concrete, and spray device of the same |
| JP6755634B1 (en) * | 2020-04-27 | 2020-09-16 | 株式会社ヒノデ開発 | Mortar or concrete spraying method and spraying equipment |
| JP7266661B1 (en) * | 2021-11-24 | 2023-04-28 | 招平 吉永 | Mixed material pumping device in concrete or mortar spraying system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58143098A (en) * | 1982-02-15 | 1983-08-25 | 株式会社奥村組 | Production of blowing concrete and blowing method of said concrete |
-
1989
- 1989-01-30 JP JP1022170A patent/JPH0749713B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02200967A (en) | 1990-08-09 |
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