JPH0283244A - Dry spraying method - Google Patents
Dry spraying methodInfo
- Publication number
- JPH0283244A JPH0283244A JP63233972A JP23397288A JPH0283244A JP H0283244 A JPH0283244 A JP H0283244A JP 63233972 A JP63233972 A JP 63233972A JP 23397288 A JP23397288 A JP 23397288A JP H0283244 A JPH0283244 A JP H0283244A
- Authority
- JP
- Japan
- Prior art keywords
- spraying
- concrete
- mortar
- quick
- setting agent
- 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.)
- Pending
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 32
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 239000004568 cement Substances 0.000 abstract description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 abstract description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 abstract description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract description 2
- 150000007524 organic acids Chemical class 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 235000002906 tartaric acid Nutrition 0.000 abstract description 2
- 239000011975 tartaric acid Substances 0.000 abstract description 2
- 238000009472 formulation Methods 0.000 abstract 1
- 239000011369 resultant mixture Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 19
- 238000010276 construction Methods 0.000 description 12
- 239000007921 spray Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- -1 calcium aluminates Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 101100382321 Caenorhabditis elegans cal-1 gene Proteins 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はセメントモルタル又はコンクリートの乾式吹付
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a dry spraying process for cement mortar or concrete.
吹付工法は圧縮空気によってモルタルやコンクリートを
施工面に高速度で吹き付ける特殊な施工法である。この
うちモルタルは法面保護、被覆。The spraying method is a special construction method that uses compressed air to spray mortar or concrete onto the construction surface at high speed. Of these, mortar is used to protect and cover slopes.
補修等に、コンクリートはトンネル覆工や法面の安定対
策等に利用されている。Concrete is used for repairs, tunnel linings, slope stabilization, etc.
現在、トンネルの掘削工法はシールド工法とＮＡＴＭ
にュー豐オーストリアン・タネリング・メソッド）工法
があるが経済的に安価なＮＡＴＭ工法が主流になってい
る。Currently, the tunnel excavation methods are the shield method and NATM.
Although there is a method called the New Austrian Tannering Method, the economically inexpensive NATM method is the mainstream method.
ＮＡＴＭ工法は掘り進んだ坑内の壁にロックボルトを打
ち込み、コンクリートを吹き付けて地山安定させながら
掘り進む方法である。The NATM method is a method in which rock bolts are driven into the walls of the excavated tunnel, and concrete is sprayed to stabilize the ground as the excavation progresses.
この場合、モルタル又はコンクリートを吹き付けるため
、モルタル又はコンクリートを急速に硬化させる吹付用
急結剤が必須である。吹付方式ではセメント・骨材・水
よりなるスラリーと急結剤を吹付ノズルの先端部分で混
合してから吹き付ける湿式法と、セメント・骨材・急結
剤の粉状混合物と水を吹付ノズルの先端部分で混合して
から吹き付ける乾式法があり、それぞれの目的に応じて
使いわけられる。急結剤には粉末と液体の２種類があり
、その組成等によってその性能が異なる。In this case, since the mortar or concrete is sprayed, a quick setting agent for spraying that rapidly hardens the mortar or concrete is essential. The spraying method involves a wet method in which a slurry consisting of cement, aggregate, and water and a quick-setting agent are mixed at the tip of the spray nozzle and then sprayed, and a wet method in which a powder mixture of cement, aggregate, and quick-setting agent and water are mixed at the tip of the spray nozzle. There is a dry method that involves mixing at the tip and then spraying, and it can be used depending on the purpose. There are two types of quick-setting agents: powder and liquid, and their performance differs depending on their composition.
乾式法において粉末の急結剤を使用した系での従来の吹
付方法を第２図に示した図面によって簡単に説明する。A conventional spraying method using a powder quick-setting agent in a dry method will be briefly explained with reference to the drawing shown in FIG.
まずセメント、粗骨材、及び細骨材を所定の配合量で計
量し、計量タンク９に貯蔵する。First, cement, coarse aggregate, and fine aggregate are weighed in predetermined amounts and stored in a weighing tank 9.
次いでコンクリートミキサー１０で空練りした後一定速
度で回っているベルトコンベア１１．１２に空練りした
材料を送り、その途中に設けられている急結剤供給装置
１３によって所定の急結剤を投入する。その後、本材料
をホッパー６を介して吹付機４へ送り、ニアコンプレッ
サー３によってノズルの先端まで送られ吹付ノズル８か
らトンネル内部の岩盤に吹き付けられる。一方、ホース
の途中から水ポンプ１で水槽２に貯わえられた水を送り
込ワ
む形で空練コンクリートに混入し、ノズルマンクによっ
てコンクリートの軟度調整を行う。Next, after dry mixing with a concrete mixer 10, the dry mixed material is sent to a belt conveyor 11, 12 rotating at a constant speed, and a predetermined quick setting agent is added by a quick setting agent supply device 13 provided in the middle. . Thereafter, the material is sent to the spray machine 4 via the hopper 6, sent to the tip of the nozzle by the near compressor 3, and sprayed from the spray nozzle 8 onto the bedrock inside the tunnel. On the other hand, water stored in a water tank 2 is pumped through the middle of the hose by a water pump 1 and mixed into the air-mixed concrete, and the softness of the concrete is adjusted by a nozzle mank.
上記した従来の乾式吹付法の問題点として急結剤の添加
量を一定にするため急結剤供給装置のキャリブレーショ
ンが必要であり、かつコンベアの送り速度を調整しなけ
ればならない点があり、又セメント、粗性材、細骨材等
を混合するコンクリートプラントとベルトコンベア等の
操作があり施工方法が煩雑である。さらにベルトコンベ
ア上等で急結剤を混入するためコンクリート内の急結剤
の分散性に問題があるため急結性能がばらつき、あるい
は吹き付は後のコンクリート強度も大きくばらついてい
た。The problems with the conventional dry spraying method mentioned above are that the quick-setting agent supply device needs to be calibrated in order to keep the amount of quick-setting agent added constant, and the feed speed of the conveyor must be adjusted. Furthermore, the construction method is complicated because it requires the operation of a concrete plant that mixes cement, coarse materials, fine aggregate, etc., and belt conveyors. Furthermore, since the quick-setting agent is mixed on the belt conveyor, etc., there is a problem with the dispersibility of the quick-setting agent in the concrete, resulting in variations in quick-setting performance, and after spraying, the strength of the concrete after spraying also varies greatly.
本発明は施工方法を大幅に簡略化すると同時に、施工面
のモルタル又はコンクリートの均質化および強度を高め
ることを目的とする。The object of the present invention is to greatly simplify the construction method, and at the same time, to homogenize the mortar or concrete on the construction surface and increase the strength.
本件発明者は上記の目的を達成するために鋭意検討した
結果、施工現場でセメント、粗骨材、細骨材に吹付用急
結剤を添加、混合するのでは前記した問題は避けられな
いので、予め工場等でセメント、粗骨材、細骨材、吹付
用急結剤を混合し、十分に均質調製した既調合品を袋詰
め等の形で施工現場に運び、それをそのまま水を添加し
て吹き付けることにより施工方法の大幅な簡略化と品質
の安定化を得ることができることを見出し、本件発明を
完成させた。As a result of intensive studies to achieve the above object, the inventor of the present invention found that the above-mentioned problems cannot be avoided by adding and mixing spray setting agents to cement, coarse aggregate, and fine aggregate at the construction site. , Cement, coarse aggregate, fine aggregate, and quick-setting agent for spraying are mixed in advance at a factory, etc., and the ready-mixed product is prepared sufficiently homogeneously and transported to the construction site in the form of bags, etc., and water is added as is. The inventors discovered that the construction method could be greatly simplified and the quality could be stabilized by spraying, and the present invention was completed.
すなわち、本件発明の要旨は予め粉末型吹付用急結剤が
既調合されているモルタル又はコンクリートをそのまま
水を添加して吹き付けることを特徴とする乾式吹付法に
ある。That is, the gist of the present invention resides in a dry spraying method characterized in that mortar or concrete in which a powder-type quick-setting agent for spraying has been prepared in advance is sprayed with water added thereto.
以下、第１図に示す図面を用いて、本件発明を説明する
。ただ第１図は本件発明の理解を容品にするための１例
であるので、本件発明は第１図に限定されるものではな
い。尚、第２図で説明した同一箇所には同一符号を付し
たので説明を省略する。Hereinafter, the present invention will be explained using the drawing shown in FIG. However, since FIG. 1 is an example to help understand the present invention, the present invention is not limited to FIG. 1. Incidentally, the same parts as explained in FIG. 2 are given the same reference numerals, so the explanation will be omitted.
まずうは工場等で吹付用急結剤をセメント、粗骨材、細
骨材で十分混合均質化された既調合のモルタル又はコン
クリートであって、袋詰め等の形で施工現場に供される
。含有・調合された吹付用急結剤は粉末型のものであれ
ば公知のものすべてが使用可能である。例えば炭酸カリ
ウム、炭酸ナトリウム等のアルカリ炭酸塩類、Ｃａｌ１
２Ａｇ２０３．ＣａＯφＡｇ２Ｏ３等のカルシウムアル
ミナート類、又はそのハロゲン化合物、アルミン酸カリ
ウム、アルミン酸ナトリウム等のアルカリ金属アルミネ
ート類等である。又、急結剤の存在量はセメントに対し
て０．５〜１５重量％の範囲が吹き付は上、あるいは施
工面の強度の立上りの点で好ましい。吹付用急結剤、セ
メント、骨材の他にクエン酸、酒石酸等の有機酸又はそ
の塩類等の他の添加物を加えたものであってもよい。First of all, it is ready-mixed mortar or concrete in which a quick setting agent for spraying is thoroughly mixed and homogenized with cement, coarse aggregate, and fine aggregate in a factory, etc., and it is delivered to the construction site in the form of bags, etc. . Any known powder-type quick setting agent can be used as the spray setting agent contained and prepared. For example, alkali carbonates such as potassium carbonate and sodium carbonate, Cal1
2Ag203. These include calcium aluminates such as CaOφAg2O3, halogen compounds thereof, and alkali metal aluminates such as potassium aluminate and sodium aluminate. Further, the amount of the quick-setting agent is preferably in the range of 0.5 to 15% by weight based on the cement, from the viewpoint of improving the sprayability and increasing the strength of the construction surface. In addition to the quick setting agent for spraying, cement, and aggregate, other additives such as organic acids such as citric acid and tartaric acid or salts thereof may be added.
このように吹付用急結剤が調合されたモルタル又はコン
クリートの既調合品５は次にホッパー６に投入され、吹
付機４に連結されているニアコンプレッサー３によって
ノズルの先端まで送られ、途中の水分補給をまって吹付
ノズル８からトンネル内部の岩盤に吹き付けられる。The ready-mixed mortar or concrete 5 in which the quick-setting agent for spraying has been mixed is then put into a hopper 6, and sent to the tip of the nozzle by the near compressor 3 connected to the spraying machine 4, After waiting for hydration, it is sprayed from the spray nozzle 8 onto the bedrock inside the tunnel.
上記したように本発明の方法は極めて簡単な工程から成
り立っており、従来の吹付用急結剤のキャリブレーショ
ン添加が不要である、混合のバラツキがない等の特長が
ある。又、バラツキがないので分散性能が向上するので
吹き付は後のコンクリート強度も均一強固である。さら
に施工現場でのコンクリートプラント、ベルトコンベア
等の操作がないので粉じん災害も起こらない。As described above, the method of the present invention consists of extremely simple steps, and has features such as not requiring the addition of calibration of the conventional spray setting agent and no variation in mixing. In addition, since there is no variation, the dispersion performance is improved, so the concrete strength after spraying is uniform and strong. Furthermore, since there is no operation of concrete plants, belt conveyors, etc. at the construction site, there are no dust hazards.
本発明の効果をテストするため実施例、比較例を示す。 Examples and comparative examples will be shown to test the effects of the present invention.
尚、実施例は第１図に示す方法、比較例は第２図に示す
方法によった。In addition, the method shown in FIG. 1 was used for the example, and the method shown in FIG. 2 was used for the comparative example.
（Ａ） 使用機械
コンクリートプラント（比較例のみ）
九人ＭＣＰ−２００Ｐ −Ｂ
急結剤添加装置 （比較例のみ）
ジャストマン技術資源■
吹 付 機 リードガンＬＯＨＥ型処理能力 Ｍ
ＡＸ ６ｒｒｒ／Ｈｒ
吹付圧力 ２，５〜３ｋｇｆ／Ｃシ
ロ 径 ２．５ Ｂ
（Ｂ） 使用材料
セメント（以下Ｃと略記）：
普通ポルトランドセメント
比重 ３．１６ 徳山セメント製
細骨材（以下Ｓと略記）：
川砂 Ｆ Ｍ２．５６
比ｆｆｉ ２．８３
産地 神奈川県足柄上郡山北町
粗骨材（以下Ｇと略記）：
砕石 ０ １０ｍｍ
ａＸ
比重 ２．５８
産地 神奈川県足柄上郡山北町
水 （以下Ｗと略記）：
水道水
急結剤（以下Ｐと略記）：
Ｑ Ｐ ５００（ホゾリス物産製）
以上の材料を下記の調合比になるように調合した。(A) Machine used Concrete plant (Comparative example only) Nine people MCP-200P -B Rapid setting agent addition device (Comparative example only) Justman technical resources ■ Spraying machine Lead gun LOHE type processing capacity M
AX 6rrr/Hr Blow pressure 2.5~3kgf/C Diameter 2.5 B (B) Material used: Cement (hereinafter abbreviated as C): Ordinary Portland cement Specific gravity 3.16 Tokuyama cement fine aggregate (hereinafter abbreviated as S) ): River sand F M2.56 ratio ffi 2.83 Production area: Yamakita-cho, Ashigarakami-gun, Kanagawa Prefecture Coarse aggregate (hereinafter abbreviated as G): Crushed stone 0 10mm aX Specific gravity 2.58 Production area: Water, Yamakita-cho, Ashigarakami-gun, Kanagawa prefecture (hereinafter abbreviated as W): Tap water quick setting agent (hereinafter abbreviated as P): Q P 500 (manufactured by Hozorisu Bussan) The above materials were mixed in the following mixing ratio.
ＧＳＷＰ
３５０ ７５８ １１３７ １５８ １７．５
ｋｇ／留但し、比較例は第２図に示すように施工現場に
て調合、実施例は工場で既調合して袋に詰めておいた材
料を第１図に示した方法すなわち直接吹付機のホッパー
へ投入する方式で行った。GSWP 350 758 1137 158 17.5
However, in the comparative example, materials were mixed at the construction site as shown in Figure 2, and in the example, materials that had been mixed at the factory and packed in bags were mixed using the method shown in Figure 1, that is, using a direct spraying machine. This was done by putting it into a hopper.
その結果、本発明の方法で行うとコンクリートプラント
とフィーダーとベルトコンベア及び急結剤添加装置は不
要になり、更に添加装置のキャリブレーションの煩雑さ
がなくなり作業能率が大幅に向上した。As a result, the method of the present invention eliminates the need for a concrete plant, feeder, belt conveyor, and quick-setting agent addition device, and also eliminates the complexity of calibrating the addition device, greatly improving work efficiency.
又、吹付状態は急結剤の添加量及び分散性が安定してい
るため従来の方式より急結性能が安定していた。In addition, in the sprayed state, the addition amount and dispersibility of the quick-setting agent were stable, so the quick-setting performance was more stable than that of the conventional method.
本発明に係る乾式吹付法は操作の煩雑さが軽減し、かつ
吹き付けられたモルタル又はコンクリートの品質が安定
する。The dry spraying method according to the present invention reduces the complexity of the operation and stabilizes the quality of the sprayed mortar or concrete.
第１図は本発明の方法の実施例を示すフロー図であり、
第２図は従来の方法である比較例を示すフロー図である
。
１・・・ポンプ ３・・・ニアコンプレッサー
４・・・吹付機
５・・・粉末型吹付用急結剤が既調合されているモルタ
ル又はコンクリートの調合品FIG. 1 is a flow diagram showing an embodiment of the method of the present invention,
FIG. 2 is a flow diagram showing a comparative example of a conventional method. 1...Pump 3...Near compressor 4...Spraying machine 5...Mortar or concrete mixture in which powder-type quick-setting agent for spraying is already mixed
Claims (1)
ル又はコンクリートをそのまま水を添加して吹き付ける
ことを特徴とする乾式吹付法。1. A dry spraying method characterized by spraying mortar or concrete that has been mixed with a powder-type quick-setting agent for spraying as is by adding water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63233972A JPH0283244A (en) | 1988-09-19 | 1988-09-19 | Dry spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63233972A JPH0283244A (en) | 1988-09-19 | 1988-09-19 | Dry spraying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0283244A true JPH0283244A (en) | 1990-03-23 |
Family
ID=16963526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63233972A Pending JPH0283244A (en) | 1988-09-19 | 1988-09-19 | Dry spraying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0283244A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2293378A (en) * | 1994-09-20 | 1996-03-27 | Sandoz Ltd | Rapid-setting cements |
| US5629048A (en) * | 1994-09-20 | 1997-05-13 | Sandoz Ltd. | Rapid setting cementitious compositions and method |
| CN104265327A (en) * | 2014-08-25 | 2015-01-07 | 河南省煤炭科学研究院有限公司 | Long-distance wet type concrete spraying method |
| CN111236979A (en) * | 2020-03-20 | 2020-06-05 | 刘思琪 | Roadway side concrete rapid sprayer for preventing water damage of coal seam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109662A (en) * | 1982-12-15 | 1984-06-25 | 株式会社 間組 | Construction of blown concrete |
| JPS62184808A (en) * | 1986-02-10 | 1987-08-13 | 三井建設株式会社 | Manufacture of concrete-mortar |
| JPS63118208A (en) * | 1986-11-07 | 1988-05-23 | 中外商工株式会社 | Method of mixing cement material |
| JPH01282140A (en) * | 1988-05-10 | 1989-11-14 | Denki Kagaku Kogyo Kk | Method for spraying fresh concrete |
-
1988
- 1988-09-19 JP JP63233972A patent/JPH0283244A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109662A (en) * | 1982-12-15 | 1984-06-25 | 株式会社 間組 | Construction of blown concrete |
| JPS62184808A (en) * | 1986-02-10 | 1987-08-13 | 三井建設株式会社 | Manufacture of concrete-mortar |
| JPS63118208A (en) * | 1986-11-07 | 1988-05-23 | 中外商工株式会社 | Method of mixing cement material |
| JPH01282140A (en) * | 1988-05-10 | 1989-11-14 | Denki Kagaku Kogyo Kk | Method for spraying fresh concrete |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2293378A (en) * | 1994-09-20 | 1996-03-27 | Sandoz Ltd | Rapid-setting cements |
| US5629048A (en) * | 1994-09-20 | 1997-05-13 | Sandoz Ltd. | Rapid setting cementitious compositions and method |
| GB2293378B (en) * | 1994-09-20 | 1998-01-21 | Sandoz Ltd | Rapid-setting cementitious composition |
| CN104265327A (en) * | 2014-08-25 | 2015-01-07 | 河南省煤炭科学研究院有限公司 | Long-distance wet type concrete spraying method |
| CN111236979A (en) * | 2020-03-20 | 2020-06-05 | 刘思琪 | Roadway side concrete rapid sprayer for preventing water damage of coal seam |
| CN111236979B (en) * | 2020-03-20 | 2021-08-24 | 杭州华移技术有限公司 | Roadway side concrete rapid sprayer for preventing water damage of coal seam |
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