JPS63167845A - Spray concrete execution of water springing surface or wet surface - Google Patents
Spray concrete execution of water springing surface or wet surfaceInfo
- Publication number
- JPS63167845A JPS63167845A JP61314032A JP31403286A JPS63167845A JP S63167845 A JPS63167845 A JP S63167845A JP 61314032 A JP61314032 A JP 61314032A JP 31403286 A JP31403286 A JP 31403286A JP S63167845 A JPS63167845 A JP S63167845A
- Authority
- JP
- Japan
- Prior art keywords
- spraying
- mix
- wet
- machine
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 34
- 239000004567 concrete Substances 0.000 title claims description 19
- 239000007921 spray Substances 0.000 title claims description 11
- 238000005507 spraying Methods 0.000 claims description 51
- 239000000203 mixture Substances 0.000 claims description 39
- 239000002562 thickening agent Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000004568 cement Substances 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 11
- 239000011378 shotcrete Substances 0.000 claims description 6
- 239000012615 aggregate Substances 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004898 kneading Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 241000257465 Echinoidea Species 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はトンネルや地下構造物などの湧水面または湿潤
面に対する吹付はコンクリートの施工法に関する。本明
細書において「コンクリート」とは、骨材として細骨材
と粗骨材を使用したした場合と細骨材だけを使用した場
合の両者を含む。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for spraying concrete onto spring water surfaces or wet surfaces such as tunnels and underground structures. In this specification, "concrete" includes both cases where fine aggregate and coarse aggregate are used as aggregates and cases where only fine aggregates are used.
従来より、トンネル等の湧水面または湿潤面に対して、
まだ固まらないコンクリートを吹付はノズルによって吹
付は施工する場合、急結剤の添加割合を高めたり、ノズ
ル部での添加水量を湧水量に応して調節する等の対応を
行ってきたが、適切に対応することは難しく、水抜きポ
ーリングの実施、集水パイプや集水シートの設置など番
こよって湧水量を減少させるような補助対策を必要とし
。Conventionally, for spring water surfaces or wet surfaces such as tunnels,
When spraying unhardened concrete using a spray nozzle, measures have been taken such as increasing the proportion of quick-setting agent added and adjusting the amount of water added at the nozzle depending on the amount of spring water. It is difficult to deal with this problem, and it is necessary to take supplementary measures to reduce the amount of spring water, such as conducting drainage polling and installing water collection pipes and water collection sheets.
経済性や施工性の点で問題があった。There were problems in terms of economy and construction.
このよう補助対策を講じなくても湧水面または湿潤面に
そのまま吹付はコンクリート施工を行なう方法として同
一出願人に係る特開昭５７−２０１４９８号公報におい
て吹付は機から吹付はノズルに至る経路において粘稠剤
をセメントとの重量比で０．１〜４．０％配合すること
によって湧水面における剥落あるいは流失のない吹付は
コンクリート施工法を提案し、また数々の実施工を行っ
てきた。JP-A No. 57-201498, filed by the same applicant, discloses that spraying directly onto spring water surfaces or wet surfaces without taking such supplementary measures is a method of concrete construction. We have proposed a concrete construction method that prevents flaking or washing away on the surface of spring water by mixing 0.1 to 4.0% thickener with cement by weight, and have carried out a number of implementations.
前記の特開昭５７−２０１４９Ｂ号公報に提案した方法
にしたがって、吹付は機から吹付はノズルに至る経路（
吹付は機を含む）で粘稠剤を添加する場合には、圧送中
の該経路において粉末状の粘稠剤をそのまま添加するこ
とは適切ではないので５粘稠剤を水或いは急結剤と混合
して添加することが必要となる。また吹付は機で添加す
る場合には粘稠剤単独或いは急結剤と混合して添加する
ことになるが、この場合にはドライミックスに添加し水
は圧送途中に添加することになる。いずれにしても該方
法によるときは、トンネル内等の狭い施工現場内に設置
された吹付は機以降において粘稠剤を配合することにな
り、この粘稠剤添加のための溶解槽や添加装置が必要と
なって施工性に＃１Ｍがあった。また、吹付は機以降に
おける圧送中のコンクリートに粘稠剤を添加する場合に
は、コンクリートに対する粘稠剤の均一な混合を吹付は
経過中に連続的に適正に行なうことが必要であるが、均
一な混合を吹付は中に維持するために圧送中のコンクリ
ートに対して安全を見て余分に添加することになり、こ
のために経済性にも問題があった。According to the method proposed in the above-mentioned Japanese Unexamined Patent Publication No. 57-20149B, the spraying is carried out along the route from the machine to the nozzle (
When adding a thickening agent by spraying (including a machine), it is not appropriate to add the powdered thickening agent as it is in the route during pressure feeding, so mix the thickening agent with water or a quick setting agent. It is necessary to mix and add. In addition, when spraying is added using a machine, the thickener is added alone or mixed with a quick-setting agent, but in this case, it is added to the dry mix and water is added during pumping. In any case, when using this method, a thickening agent will be added after the spraying machine installed in a narrow construction site such as a tunnel, and a dissolving tank and an addition device for adding this thickening agent will be required. was required, and the workability was #1M. In addition, when adding a thickening agent to the concrete being pumped after the spraying machine, it is necessary to properly mix the thickening agent into the concrete continuously during the spraying process. In order to maintain homogeneous mixing during spraying, an extra amount of powder must be added to the concrete being pumped for safety reasons, which also poses an economical problem.
本発明はこの粘稠剤の添加手順における施工性および経
済性の問題の解決を目的としたものである。The purpose of the present invention is to solve the problems of workability and economy in the thickening agent addition procedure.
前記の問題を解決せんとする本発明の要旨とするところ
は、セメント、骨材および水をミキサーに投入して練り
混ぜ、得られたウェットミックスを吹付は機に装入し、
該吹付は機から該ミックスを吹付はノズルに圧送して該
ミックスを湧水面または湿潤面に吹付は施工するか、或
いはセメントと骨材をミキサーに投入してから練りし、
得られたドライミックスを吹付は機に装入し９吹付は機
から吹付はノズルに至る経路で水を添加しながらミック
スを湧水面または湿潤面に吹付は施工するにさいし、該
ミキサーでの練り混ぜのさいに粘稠剤を配合して練り混
ぜ、この粘稠剤添加のミックスを吹付は機に搬送して装
入することを特徴とする湧水面または湿潤面の吹付はコ
ンクリート施工法を提供するものである。The gist of the present invention, which aims to solve the above-mentioned problems, is to put cement, aggregate, and water into a mixer, mix them, and charge the resulting wet mix into a spraying machine.
The spraying process involves pumping the mix from a machine to a spray nozzle and spraying the mix onto a spring surface or wet surface, or by putting cement and aggregate into a mixer and then kneading it.
The obtained dry mix is charged into a spraying machine, and water is added along the route from the spraying machine to the spraying nozzle, and the mix is kneaded in the mixer before spraying onto a spring water surface or a wet surface. Spraying on spring water or wet surfaces provides a concrete construction method that is characterized by adding a thickening agent and kneading it during mixing, and transporting and charging the mix with the added thickening agent into a spraying machine. It is something to do.
すなわち本発明による湧水面または湿潤面の吹付はコン
クリート施工法は、該特開昭５７−２０１４９８号公報
の方法とは異なり、吹付は機に装入するドライミックス
またはウェットミックスに予め粘稠剤を均一に混合して
おくのであり、このために。That is, the concrete construction method for spraying on spring water surfaces or wet surfaces according to the present invention is different from the method disclosed in JP-A-57-201498, in which a thickening agent is added in advance to the dry mix or wet mix charged into the machine. It is for this reason that it is mixed evenly.
これらのミックスを得るためのミキサーで粘稠剤を添加
するのである。ウェットミックスに粘稠剤を添加した場
合には、その粘性が増大するが２反面においてフロー値
の経時変化が少なく練り置き時間をおいても（例えば１
時間程度の時間を置いても）材料分離や流動性に変化を
生しないので。Thickening agents are added in mixers to obtain these mixes. When a thickening agent is added to a wet mix, its viscosity increases, but on the other hand, there is little change in flow value over time, even after a long kneading period (for example, 1
Even if it is left for several hours), there will be no change in material separation or fluidity.
均一なウェットミックスを比較的大量に作っておくこと
ができ、これを吹付は現場の吹付は機に搬送し、吹付は
作業に合わせて適宜使用することができるので８作業性
は著しく向上すると共ムこ材質的にも均質なものを経済
的に作成することができる。ドライミックスの場合には
ミキサーにおいて粘稠剤を添加して十分に掻き混ぜてお
けばよく。A relatively large amount of uniform wet mix can be prepared in advance, and this can be transported to a machine for on-site spraying and used as needed to match the work, which significantly improves work efficiency. It is possible to economically produce a material that is homogeneous. In the case of a dry mix, just add a thickening agent to the mixer and mix thoroughly.
この場合に練り置き時間は一層多くとることができるこ
とになる。In this case, more time can be taken for kneading.
第１図〜第６図は本発明法の態様を図解的に示したもの
であり、第１〜３図はウェットミックスを吹付は機に搬
送装入する態様、第４〜６図はドライミックスを吹付は
機に搬送装入する態様を示している。これらの図におい
て、１はミキサー。Figures 1 to 6 schematically show aspects of the method of the present invention. Figures 1 to 3 show the wet mix being transported and loaded into the spraying machine, and Figures 4 to 6 show the dry mix. Spraying shows how the material is transported and loaded into the machine. In these figures, 1 is a mixer.
２は吹付は機、３は吹付はノズルであり、４は吹付は機
２から吹付はノズル３に至る圧送経路である。また５は
粘稠剤を示し、６は急結剤を示す。2 is a spray machine, 3 is a spray nozzle, and 4 is a pressure feeding route from the spray machine 2 to the spray nozzle 3. Further, 5 indicates a thickening agent, and 6 indicates an quick setting agent.
Ｃはセメント、Ｓは細骨材、Ｇは粗骨材、Ｗは水を表し
ている。C stands for cement, S stands for fine aggregate, G stands for coarse aggregate, and W stands for water.
第１図は、セメントｃ、細骨材Ｓ、粗骨材Ｇおよび水Ｗ
をミキサー１に投入して練り混ぜるさいに粘稠剤５もこ
のミキサー１に投入してウニ・ノトミソクスを作り、こ
れを吹付けｓ２に搬送装入して吹付はノズル３に圧送す
ると共に経路４の吹付はノズル３の手前において急結剤
６を添加する例を示す。Figure 1 shows cement C, fine aggregate S, coarse aggregate G and water W.
is put into the mixer 1 and kneaded, while the thickening agent 5 is also put into the mixer 1 to make sea urchin notomisoku, which is transported and charged to the sprayer s2, and the sprayer is forced to the nozzle 3 and route 4. The spraying shows an example in which the quick-setting agent 6 is added before the nozzle 3.
第２図は、水Ｗに粘稠剤５を添加してミキサー１に投入
する以外は第１図と同じ例を示す。FIG. 2 shows the same example as in FIG. 1, except that water W is added with a thickening agent 5 and put into the mixer 1.
第３図は、細骨材Ｓと粘稠剤５とを予め混合してからミ
キサー１に投入する以外は第１図と同じ例を示す。FIG. 3 shows the same example as FIG. 1 except that the fine aggregate S and the thickening agent 5 are mixed in advance and then put into the mixer 1.
第４図は、セメントＣ２細骨材Ｓおよび粗骨材Ｇをミキ
サー１に投入してから練りするさいに粘稠剤５もこのミ
キサーｌに投入してドライミックスを作り、これを吹付
は機２に搬送装入し、吹付は機２から吹付はノズル３に
圧送する経路４において水Ｗを添加すると共に急結剤６
も添加する例を示す。Figure 4 shows that when cement C2, fine aggregate S, and coarse aggregate G are put into mixer 1 and then kneaded, thickening agent 5 is also put into this mixer 1 to make a dry mix. Water W is added in route 4, which is conveyed from machine 2 to nozzle 3, and a quick-setting agent 6 is added.
An example is shown in which also is added.
第５図は、細骨材Ｓと粘稠剤５とを予め混合してミキサ
ー１に投入する以外は第４図と同し例を示す。FIG. 5 shows the same example as FIG. 4 except that the fine aggregate S and the thickening agent 5 are mixed in advance and put into the mixer 1.
第６図は、急結剤６と粘稠剤５とを混合してからミキサ
ー１に投入してドライミックスを作るようにした以外は
第５図と同じ例を示す。FIG. 6 shows the same example as FIG. 5 except that the quick setting agent 6 and the thickening agent 5 are mixed and then put into the mixer 1 to make a dry mix.
これらの例において粗骨材Ｇを使用しないモルタルを吹
付は施工することも勿論できるものであり１本発明法に
よる吹付はコンクリート施工法とは粗骨材を配合しない
モルタルの使用もその範囲に含むものである。In these examples, it is of course possible to perform spraying with mortar that does not use coarse aggregate G, and spraying according to the method of the present invention is considered a concrete construction method, which also includes the use of mortar that does not contain coarse aggregate. It is something that
本発明に使用する粘稠剤としては、公知のセルロースエ
ーテル系或いはアクリル系の粘稠剤が適用できる。すな
わち、コンクリートミックス中に配合した場合にミック
ス中の水に溶解して水の粘性を高めると同時にセメント
や骨材の分離を低減させる粘稠剤（水中分離防止剤）で
あれば本発明で使用できる。セルロースエーテル系粘稠
剤はセルロースに各種の置換基を導入して水溶性セルロ
ースエーテルとしたもので、Ｗ換の種類や置換度に応し
て多くの種類に分けられるが、主成分としてはヒドロキ
シプロピルメチルセルロース、ヒドロキシエチルメチル
セルロース、ヒドロキシエチルセルロース等を含むもの
が一般的である。これらのセルロースエーテル系粘稠剤
は市場で入手することができ１例えば商品名がＵＷＢと
ＵＷＢ−Ｍ（三井石油化学株式会社製）、マリンキープ
とマリンキープ直徳山曹達株式会社製）、セルクリート
Ｈとセルクリ−）１１Ｂ（ダイセル化学株式会社製）。As the thickening agent used in the present invention, known cellulose ether-based or acrylic-based thickening agents can be used. In other words, any thickening agent (underwater separation prevention agent) that dissolves in the water in the concrete mix and increases the viscosity of the water while at the same time reducing the separation of cement and aggregates can be used in the present invention. can. Cellulose ether-based thickeners are water-soluble cellulose ethers made by introducing various substituents into cellulose, and are divided into many types depending on the type and degree of W substitution, but the main component is hydroxyl. Those containing propylmethylcellulose, hydroxyethylmethylcellulose, hydroxyethylcellulose, etc. are common. These cellulose ether-based thickening agents are available on the market.For example, the product names are UWB and UWB-M (manufactured by Mitsui Petrochemicals Co., Ltd.), Marine Keep and Marine Keep (manufactured by Naotokuyama Soda Co., Ltd.), and Cellucrete. H and Cellucry) 11B (manufactured by Daicel Chemical Co., Ltd.).
アスカクリーン（信越化学株式会社製）、ユニショット
Ａ１０とユニシジソ） Ｆ−３５０（第−工業製薬株式
会社製）、などがあり、これらを本発明において好適に
使用することができる。また、アクリル系粘稠剤はアク
リルアミドを主体とした重合体を主成分とするものであ
り、これらも市場で入手可能である。例えば商品名がシ
ーペター（三共化成工業株式会社製）、アクリス１２Ａ
や１２Ｓ（日曹マスターピルダース社製）などがあり、
これらも本発明で使用することができる。Asuka Clean (manufactured by Shin-Etsu Chemical Co., Ltd.), Unishot A10 and Unishidiso) F-350 (manufactured by Dai-Kogyo Seiyaku Co., Ltd.), and the like, and these can be suitably used in the present invention. Further, acrylic thickening agents are mainly composed of polymers mainly composed of acrylamide, and these are also available on the market. For example, the product names are Seapeter (manufactured by Sankyo Kasei Kogyo Co., Ltd.) and Akris 12A.
and 12S (manufactured by Nisso Master Pilders), etc.
These can also be used in the present invention.
これら粘稠剤の配合量についてはコンクリート配合や粘
稠剤の種類によって適切に定められるがセルロースエー
テル系粘稠剤の場合にはセメントとの重量比で０．１〜
２．０％の量とするのがよい。The amount of these thickeners to be blended is appropriately determined depending on the concrete formulation and the type of thickener, but in the case of cellulose ether-based thickeners, the weight ratio to cement is 0.1 to
The amount is preferably 2.0%.
０．１重量％未満の添加では粘着効果が十分でなく。If less than 0.1% by weight is added, the adhesive effect will not be sufficient.
２．０重量％を超える添加では施工性や硬化反応のあま
りの遅延の点から好ましくないからである。This is because addition of more than 2.0% by weight is unfavorable from the viewpoint of workability and excessive delay in curing reaction.
なお、粘稠剤の種類によっては、コンクリートのコンシ
スチンシーの点から減水剤を使用するのが望ましく、ま
た粘稠剤の添加によってミックス中に気泡が連行する場
合があるので、この場合には消泡剤例えばジブチルフタ
レート、非水溶性アルコール類、トリブチルフォスフェ
ート等を適量添加するのが望ましい。Depending on the type of thickening agent, it may be desirable to use a water reducing agent from the viewpoint of concrete consistency, and adding a thickening agent may entrain air bubbles into the mix, so in this case, It is desirable to add an appropriate amount of an antifoaming agent such as dibutyl phthalate, water-insoluble alcohols, tributyl phosphate, etc.
本発明で使用するセメントは周知のポルトランドセメン
トが使用でき、急結剤はセメント鉱物系のものが使用で
きる。骨材は細骨材または粗骨材ともその種類には実質
上制限を受けない。The cement used in the present invention can be a well-known Portland cement, and the quick-setting agent can be a cement mineral type. There are virtually no restrictions on the type of aggregate, whether it is fine aggregate or coarse aggregate.
本発明法で使用するミキサーとしては、バッチ式、連続
式その他一般に使用されているミキサーが使用できる。As the mixer used in the method of the present invention, batch type, continuous type, and other commonly used mixers can be used.
吹付は機としてはウェットミックスの湿式の場合にはポ
ンプ圧送式吹付は機、空気圧送式吹付は機のいずれも使
用でき、ドライミックスの乾式の場合には空気圧送式の
ものが使用できる。For spraying, either a pump or pneumatic spraying machine can be used in the case of a wet mix, and a pneumatic spraying machine can be used in the case of a dry mix.
実施例
第１表に示すコンクリート配合で第３図に示す方法でト
ンネル外に設置したミキサーでウェットミックスを作り
、これをトンネル内の吹付は現場近くに移動可能に設置
した吹付は機に搬送し、練り混ぜ後約３０〜５０分後に
湧水が生しているトンネル内面に吹付けた。その結果、
湧水が生している箇所でも吹付はコンクリートは剥離や
流失することなく吹付は面会面に強固のコンクリート層
が形成された。Example A wet mix was made using the concrete mix shown in Table 1 using the method shown in Figure 3 using a mixer installed outside the tunnel, and this was transported to a spraying machine installed movably near the site for spraying inside the tunnel. Approximately 30 to 50 minutes after mixing, it was sprayed onto the inner surface of the tunnel where spring water was growing. the result,
Even in areas where there is spring water, the sprayed concrete did not peel or wash away, and a strong concrete layer was formed on the facing surface.
また、配合は同じであるが第５図に示す方法でトンネル
外に設置したミキサーでドライミックスを作り、これを
トンネル内の吹付は現場近くに移動可能に設置した吹付
は機に搬送し、吹付は機から吹付はノズルに至る経路で
水と急結剤を添加して湧水が生しているトンネル内面に
吹付けた。この場合にも、湧水が生している箇所でも吹
付はコンクリートは剥離や流失することなく吹付は面会
面に強固のコンクリート層が形成された。In addition, although the formulation is the same, a dry mix is made using a mixer installed outside the tunnel using the method shown in Figure 5, and this is transported to a spraying machine installed movably near the site for spraying inside the tunnel, and then sprayed. Water and quick-setting agent were added along the route from the machine to the nozzle and sprayed onto the inner surface of the tunnel where spring water was growing. In this case, even in areas where spring water was present, the sprayed concrete did not peel or wash away, and a strong concrete layer was formed on the facing surface.
第１図〜第６図はいずれも本発明工法の材料配合手順を
示す工程図であり、第１図〜第３図はウェットミックス
を吹付は機に装入する例を、第４図〜第６図はドライミ
ックスを吹付は機に装入する例を示す。
■・・ミキサー、 ２・・吹付は機。
３・・吹付はノズル、 ４・・吹付は機から吹付はノ
ズルに至る材料圧送経路、 ５・・粘稠剤。
６・・急結剤、 Ｃ・・セメント、 Ｓ・・細骨材
、 Ｇ・・粗骨材、 Ｗ・・水。Figures 1 to 6 are process diagrams showing the material mixing procedure of the method of the present invention. Figure 6 shows an example of charging a dry mix into a spraying machine. ■...mixer, 2...machine for spraying. 3. Spraying is the nozzle, 4. Spraying is the material pressure route from the machine to the nozzle, 5. Thickening agent. 6. Rapid setting agent, C.. Cement, S.. Fine aggregate, G.. Coarse aggregate, W.. Water.
Claims (5)
り混ぜ、得られたウェットミックスを吹付け機に装入し
、該吹付け機から該ミックスを吹付けノズルに圧送して
該ミックスを湧水面または湿潤面に吹付け施工するにさ
いし、該ミキサーでの練り混ぜのさいに粘稠剤を配合し
て練り混ぜ、この粘稠剤添加のウェットミックスを吹付
け機に装入することを特徴とする湧水面または湿潤面の
吹付けコンクリート施工法。(1) Cement, aggregate, and water are put into a mixer and mixed, the resulting wet mix is charged into a spraying machine, and the mix is force-fed from the spraying machine to a spraying nozzle. When spraying on spring water surfaces or wet surfaces, it is recommended to mix and mix a thickening agent with the mixer, and then charge the wet mix with this thickening agent into the spraying machine. Features: Shotcrete construction method for spring or wet surfaces.
ノズル手前において急結剤を該経路中のウェットミック
スに添加する特許請求の範囲第１項記載の吹付けコンク
リート施工法。(2) The shotcrete construction method according to claim 1, wherein the quick-setting agent is added to the wet mix in the route from the spraying machine to the spraying nozzle before the spraying nozzle.
、得られたドライミックスを吹付け機に装入し、吹付け
機から吹付けノズルに至る経路で水を添加しながらミッ
クスを湧水面または湿潤面に吹付け施工するにさいし、
該ミキサーでのから練りのさいに粘稠剤を配合し、粘稠
剤添加のドライミックスを吹付け機に装入することを特
徴とする湧水面または湿潤面の吹付けコンクリート施工
法。(3) Put the cement and aggregate into a mixer and knead it, then charge the resulting dry mix into a spray machine and spray the mix while adding water along the route from the spray machine to the spray nozzle. When spraying on water or wet surfaces,
A method for spraying concrete on a spring surface or a wet surface, characterized by adding a thickening agent during mixing with the mixer and charging the dry mix to which the thickening agent has been added into a spraying machine.
る特許請求の範囲第３項記載の吹付けコンクリート施工
法。(4) The shotcrete construction method according to claim 3, wherein an quick-setting agent is added during mixing with the mixer.
ノズル手前において急結剤を該経路中のミックスに添加
する特許請求の範囲第３項記載の吹付けコンクリート施
工法(5) The shotcrete construction method according to claim 3, wherein an quick-setting agent is added to the mix in the route from the spraying machine to the spraying nozzle before the spraying nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61314032A JPS63167845A (en) | 1986-12-27 | 1986-12-27 | Spray concrete execution of water springing surface or wet surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61314032A JPS63167845A (en) | 1986-12-27 | 1986-12-27 | Spray concrete execution of water springing surface or wet surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63167845A true JPS63167845A (en) | 1988-07-11 |
| JPH0514068B2 JPH0514068B2 (en) | 1993-02-24 |
Family
ID=18048393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61314032A Granted JPS63167845A (en) | 1986-12-27 | 1986-12-27 | Spray concrete execution of water springing surface or wet surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63167845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013170400A (en) * | 2012-02-21 | 2013-09-02 | Kajima Corp | Concrete spraying method, and rebound and dust reducing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5740098A (en) * | 1980-08-21 | 1982-03-05 | Seiwa Kiko Kk | Concrete blasting vehicle |
| JPS57209366A (en) * | 1981-06-19 | 1982-12-22 | Gijiyutsu Shigen Kaihatsu Kk | Method of spraying concretes |
| 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 |
| JPS58168798A (en) * | 1982-03-27 | 1983-10-05 | 電気化学工業株式会社 | Method of improving workability in case of execution of spraying |
-
1986
- 1986-12-27 JP JP61314032A patent/JPS63167845A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5740098A (en) * | 1980-08-21 | 1982-03-05 | Seiwa Kiko Kk | Concrete blasting vehicle |
| JPS57209366A (en) * | 1981-06-19 | 1982-12-22 | Gijiyutsu Shigen Kaihatsu Kk | Method of spraying concretes |
| 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 |
| JPS58168798A (en) * | 1982-03-27 | 1983-10-05 | 電気化学工業株式会社 | Method of improving workability in case of execution of spraying |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013170400A (en) * | 2012-02-21 | 2013-09-02 | Kajima Corp | Concrete spraying method, and rebound and dust reducing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0514068B2 (en) | 1993-02-24 |
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