JPS6246754Y2 - - Google Patents
Info
- Publication number
- JPS6246754Y2 JPS6246754Y2 JP1986070756U JP7075686U JPS6246754Y2 JP S6246754 Y2 JPS6246754 Y2 JP S6246754Y2 JP 1986070756 U JP1986070756 U JP 1986070756U JP 7075686 U JP7075686 U JP 7075686U JP S6246754 Y2 JPS6246754 Y2 JP S6246754Y2
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- cement
- mixed
- introduction pipe
- fibers
- 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
Links
- 239000004570 mortar (masonry) Substances 0.000 claims description 42
- 239000000835 fiber Substances 0.000 claims description 33
- 238000005507 spraying Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000004568 cement Substances 0.000 description 14
- 239000007921 spray Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000011083 cement mortar Substances 0.000 description 8
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-SQOUGZDYSA-N Gluconic acid Natural products OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Nozzles (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、繊維入り急硬性セメントモルタルの
壁面吹付装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wall spraying device for rapidly hardening fiber-containing cement mortar.
一般的に繊維入り急硬性セメントモルタルの壁
面塗布装置には、いろいろの装置があるが、作業
性の点から吹付装置によるのが最も好ましいもの
とされている。従来、繊維入りセメントモルタル
は、作業性を向上するために、通常のセメントモ
ルタルに比べて水を多くする方法をとつている
が、これを従来の装置で吹付けた壁面モルタル
は、その硬化前に流下する、いわゆる“だれ”現
象を生ずるので、繊維の付着が不均一となり、本
来の繊維入りセメントモルタルの特性を十分に発
現できなかつた。この現象は、特に気温の低い冬
場において顕著であるのでこの改善が望まれてい
た。
Generally, there are various devices for applying fiber-containing rapid hardening cement mortar to walls, but from the viewpoint of workability, a spraying device is considered the most preferable. Conventionally, fiber-filled cement mortar is made by adding more water than normal cement mortar in order to improve workability, but wall mortar sprayed with this using conventional equipment does not contain water before it hardens. This causes the so-called "drip" phenomenon in which the fibers flow down, resulting in non-uniform adhesion of fibers and failure to fully exhibit the original properties of fiber-containing cement mortar. Since this phenomenon is particularly noticeable in winter when the temperature is low, improvement of this phenomenon has been desired.
また、繊維入りセメントモルタルの強度発現を
短時間に行なわせるために、セメント急硬材スラ
リーとセメントモルタルを吹付機から噴出させた
後、又は吹付機の噴出口直前で瞬間的に混合さ
せ、型面に吹付けて繊維強化セメント成型物を製
造する装置が知られている（特開昭53−94504号
公報）。しかし、この装置は型枠を用いることが
条件とされており、しかもセメント急硬材スラリ
ーは瞬時に混合されるので、これを壁面吹付工事
に適用しても硬化時間が不均一となつて、“だ
れ”現象の防止は改善できなかつた。 In addition, in order to develop the strength of fiber-containing cement mortar in a short period of time, cement rapid hardening slurry and cement mortar are mixed instantly after being ejected from a spray machine, or immediately before the spout of the spray machine, and molded. An apparatus for manufacturing fiber-reinforced cement molded products by spraying onto a surface is known (Japanese Patent Laid-Open No. 53-94504). However, this equipment requires the use of formwork, and the cement hardening slurry is mixed instantly, so even if it is applied to wall spraying work, the curing time will be uneven. Prevention of the "who" phenomenon could not be improved.
漏水又は出水に対する防水を目的としてセメン
ト急結剤をセメントモルタルと共に吹付けるガン
は公知（例えば特公昭49−11162）であるが、こ
のガンは急結剤がノズル内において棒状となりそ
の周囲をモルタルに包まれたまま放出するように
したものであり局所に近接して使用されるもので
あつてこの種のガンは本案装置には使用できない
ものである。 Guns that spray cement quick-setting agents together with cement mortar for the purpose of waterproofing water leakage or water leakage are known (e.g. Japanese Patent Publication No. 49-11162). This type of gun cannot be used in the device of the present invention because it is designed to be released while being wrapped and used close to the local area.
更に繊維材料を壁面等に接着剤と共に噴霧する
装置として特公昭48−29845が提案されている
が、この装置はガンの中心に開口する繊維吹出口
の周囲に、所定角度を保持された複数の接着剤噴
霧ノズルが設けられ放出繊維を被包するように噴
霧するものであつて繊維被着面における繊維部の
パターンと接着剤塗布パターンとを一致させ得な
い本質的な欠点がある他モルタル吹付装置装置と
しては利用できない。 Furthermore, Japanese Patent Publication No. 48-29845 has proposed a device for spraying fiber materials together with adhesive onto walls, etc., but this device consists of multiple fiber outlets held at a predetermined angle around a fiber outlet opening at the center of the gun. Mortar spraying has the essential drawback that it is equipped with an adhesive spray nozzle and sprays the ejected fibers so as to envelop them, but the pattern of the fibers on the surface to which the fibers are adhered cannot match the adhesive application pattern. It cannot be used as a device.
本案は、塗布面において繊維と急結剤分散混合
モルタルを同一パターンで重畳被着させ上記従来
装置による諸欠点を解決する吹付装置を提供する
ものである。
The present invention provides a spraying device that solves the various drawbacks of the conventional devices by overlapping fibers and mortar with dispersed setting agent in the same pattern on the coating surface.
本案吹付装置は、モルタル導入管１の先端側内
部に中心軸３１を固設すると共に該軸上に複数の
直交羽根３２を軸着したラインミキサ３を設け、
前期中心軸の後端３３に対面させて急硬剤スラリ
ー導入管２の開口端部２１を位置させ前記モルタ
ル導入管の先端側外周に圧搾空気導入室４１を構
成するノズル外筒４２を設け、該ノズル外筒の先
端吹出口４から急結剤混合モルタル６を放出させ
ると共に前記モルタル導入管又はノズル外筒に吹
付繊維のチヨツパーガンを吹付角度変更自在に設
けて構成される。
The present spraying device has a central shaft 31 fixed inside the tip side of the mortar introduction pipe 1, and a line mixer 3 with a plurality of orthogonal blades 32 mounted on the shaft,
The opening end 21 of the hardener slurry introduction pipe 2 is positioned facing the rear end 33 of the central axis, and a nozzle outer cylinder 42 constituting a compressed air introduction chamber 41 is provided on the outer periphery of the distal end side of the mortar introduction pipe. The mortar 6 mixed with an accelerating agent is discharged from the outlet 4 at the tip of the nozzle outer cylinder, and a chopper gun of sprayed fibers is provided in the mortar introduction pipe or the nozzle outer cylinder so that the blowing angle can be changed.
上記装置において、モルタルは急硬材と共にラ
インミキサに送られ該部を移動中にほぼ均一に混
合分散され急硬材混合モルタル（以下混合モルタ
ルという）となつて管５からの圧搾空気により吹
出口４から被着壁面に向けて放出される。
In the above device, the mortar is sent to the line mixer together with the hardened materials, and while moving through the line mixer, the mortar is almost uniformly mixed and dispersed to form a mixed mortar of the rapidly hardened materials (hereinafter referred to as mixed mortar). 4 toward the adhered wall surface.
これと同時にチヨツパーガン７からは繊維のロ
ービング８を５〜30mm程度に切断した短繊維９が
圧搾空気によつて混合モルタル吹付パターンと同
一になるように吹付角度及び吹出空気量が調節さ
れて噴射される。 At the same time, short fibers 9 obtained by cutting fiber rovings 8 into pieces of about 5 to 30 mm are sprayed from the chopper gun 7 using compressed air, with the spray angle and amount of air being adjusted so as to be the same as the mixed mortar spray pattern. Ru.
従つて短繊維と混合モルタルとは空間移動中に
おいても接触し、これらが被着面に到達したとき
混合モルタルは繊維を抱き混むような状態で急速
に固結する。 Therefore, the short fibers and the mixed mortar come into contact with each other even during spatial movement, and when they reach the surface to which they are adhered, the mixed mortar quickly solidifies in a state that envelops the fibers.
本案装置によれば被着面において混合モルタル
中の繊維が均一密度で分散しているから金属繊維
の如く比重の大きい繊維を混合してもダレ現象を
生じない効果がある。 According to the device of the present invention, since the fibers in the mixed mortar are dispersed at a uniform density on the adhering surface, there is an effect that no sagging phenomenon occurs even when fibers with a high specific gravity such as metal fibers are mixed.
モルタルを調製するには、セメントとして
JISR5210に規定される普通・早強・超早強・中
庸熱・耐硫酸塩等のポルトランドセメントやこれ
にシリカ、フライアツシユさらには高炉水砕スラ
グを混合した混合セメント等が使用できる。これ
に細骨材を任意の割合で配合し水を加えてポンプ
輸送可能なスラリー濃度とする。具体的には、セ
メント100重量部に対し、細骨材50〜450重量部、
水30〜60重量部の割合とするのが、モルタルの流
動性と強度発現の面から好適である。 To prepare mortar, as cement
Portland cement of normal, early strength, super early strength, moderate heat, sulfate resistance, etc. specified in JISR5210, mixed cement with silica, fly ash, and even granulated blast furnace slag can be used. This is mixed with fine aggregate in any proportion and water is added to make a slurry with a concentration that can be transported by pump. Specifically, 50 to 450 parts by weight of fine aggregate to 100 parts by weight of cement,
A proportion of 30 to 60 parts by weight of water is suitable from the viewpoint of fluidity and strength development of the mortar.
本考案の混合機に供給する急硬材スラリーを調
製する場合は、急硬材として、炭酸ナトリウム、
珪酸ナトリウム、アルミン酸ナトリウム、塩化カ
ルシウムなどの無機塩類や、アルミナセメント、
カルシウムアルミネート、あるいはカルシウムア
ルミネートと石コウとの混合物などのセメント系
物質等のように、セメントの凝結硬化を促進する
ようなもの全てが使用可能であるが、これらの
中、凝結開始時間の調整の容易性、短時間強度発
現性及び長期安定性の面から、カルシウムアルミ
ネートと石こうとの混合物が最も好ましい。カル
シウムアルミネートとしては、CaO含有量が37〜
45重量％のものがよく、特に結晶形物よりも無定
形物は強度発現にすぐれている。カルシウムアル
ミネートに対する石コウの割合は、同様な理由に
より、0.5〜２重量倍量が好ましく、また使用す
る石コウの形態についても特に制約はないが、
型無水石コウが好適である。 When preparing the rapidly hardening material slurry to be supplied to the mixer of the present invention, sodium carbonate,
Inorganic salts such as sodium silicate, sodium aluminate, calcium chloride, alumina cement,
Any substance that accelerates the setting and hardening of cement can be used, such as cementitious substances such as calcium aluminate or a mixture of calcium aluminate and gypsum; A mixture of calcium aluminate and gypsum is most preferred from the viewpoint of ease of adjustment, short-term strength development, and long-term stability. As calcium aluminate, CaO content is 37~
A content of 45% by weight is preferable, and amorphous materials exhibit better strength than crystalline materials. For the same reason, the ratio of gypsum to calcium aluminate is preferably 0.5 to 2 times the weight, and there are no particular restrictions on the form of the gypsum used.
Type anhydrite is preferred.
モルタル又は急硬材スラリーのいずれか一方又
は両方に、各種のセメント分散剤、セメントリタ
ーダー（以下リターダーという）、増粘剤を添加
すると、それ相当の良好な結果を与え、また例え
ばエチレン−酢酸ビニルエマルジヨンなどの酢酸
ビニル系エマルジヨン、アクリル系エマルジヨン
などの樹脂エマルジヨンを配合しておくと、壁面
モルタルの耐水性が一段と改善されたものとな
る。混合機で凝結開始時間が0.5〜30分である急
硬モルタルを調製するには、モルタルと急硬材ス
ラリーのいずれか一方又は両方の供給量を調節す
ることによつてできるが、モルタル量で調節する
のは、なかなか難しく、また急硬モルタルの吹付
量に影響を与えるので、あまり好適な方法ではな
い。またリターダーの添加量を調節することによ
つても可能である。この場合のリターダーとして
は、グルコン酸及び／又は酒石酸又はこれらの塩
類５〜20重量％、クエン酸又はその塩類30〜10重
量％、及びアルカリ炭酸塩50〜85重量％よりなる
混合物は、その添加量に比例した凝結開始時間が
得られるので、好ましいリターダーである。 Comparably good results can be obtained by adding various cement dispersants, cement retarders (hereinafter referred to as retarders), and thickeners to either or both of the mortar and the rapidly hardening material slurry. If a resin emulsion such as a vinyl acetate emulsion such as an emulsion or an acrylic emulsion is blended, the water resistance of the wall mortar will be further improved. To prepare a rapid hardening mortar with a setting start time of 0.5 to 30 minutes using a mixer, it is possible to prepare a rapid hardening mortar with a setting start time of 0.5 to 30 minutes by adjusting the supply amount of either or both of the mortar and the rapid hardening material slurry. This is not a very suitable method because it is difficult to adjust and also affects the amount of rapidly hardening mortar sprayed. It is also possible to adjust the amount of retarder added. In this case, as a retarder, a mixture consisting of 5 to 20% by weight of gluconic acid and/or tartaric acid or their salts, 30 to 10% by weight of citric acid or its salts, and 50 to 85% by weight of an alkali carbonate is used. It is a preferred retarder because it provides a volume-proportional setting onset time.
本考案において、急硬モルタルの凝結開始時間
は“だれ”現象防止には短いものほどよいが、機
内の閉塞等の事情を考慮して0.5〜30分、好まし
くは５〜10分である。つまり、0.5分よりも短い
凝結開始時間は、不慮の事故に対して機内を閉塞
させてしまう恐れがあるし、また30分よりも長い
時間では、“だれ”防止はできない。いずれにし
ても凝結開始時間を安定にすることは好ましい。 In this invention, the shorter the setting start time of the quick-hardening mortar, the better in preventing the "sagging" phenomenon, but taking into consideration factors such as blockage inside the machine, the setting start time is 0.5 to 30 minutes, preferably 5 to 10 minutes. In other words, a setting start time shorter than 0.5 minutes may cause the machine to be blocked in the event of an accident, and a time longer than 30 minutes cannot prevent "sagging". In any case, it is preferable to stabilize the setting start time.
吹付機としては、市販の湿式用のもので十分で
あり、ノズルの方向は、壁面にほぼ直角となるよ
うにするのがよい。ノズルと壁面間距離は0.5〜
2m程度、好ましくは0.7〜1.2m程度にすれば、材
料のはね返り率（リバウンド率）が小さくてす
む。同様な理由により、ノズル先端での吹出し圧
は0.5〜３Kg／cm2、好ましくは１〜1.5Kg／cm2程度
にするのがよい。繊維の、種類としては、鋼繊
維、ガラス繊維、有機繊維、木毛、石綿等を適宜
用いることができるが、作業性と耐久性の点か
ら、耐アルカリガラス繊維が好ましい。また急硬
モルタルのセメント成分に対する繊維の割合は、
0.5〜30重量％程度がよい。 A commercially available wet sprayer is sufficient, and the direction of the nozzle is preferably approximately perpendicular to the wall surface. The distance between the nozzle and the wall is 0.5~
If the length is about 2 m, preferably about 0.7 to 1.2 m, the rebound rate of the material will be small. For the same reason, the blowing pressure at the tip of the nozzle is preferably about 0.5 to 3 kg/cm 2 , preferably about 1 to 1.5 kg/cm 2 . As for the type of fibers, steel fibers, glass fibers, organic fibers, wood wool, asbestos, etc. can be used as appropriate, but alkali-resistant glass fibers are preferred from the viewpoint of workability and durability. In addition, the ratio of fiber to the cement component of quick-hardening mortar is
Approximately 0.5 to 30% by weight is preferable.
本考案において、繊維入りモルタルの積層厚さ
は３〜30mmが好適であるが、現場状況により何等
これに限定されるものではない。なお、壁面に吹
付られた繊維入りモルタルは、鏝やロールによつ
ておさえをすれば、さらに安定性を有する壁が形
成される。 In the present invention, the laminated thickness of the fiber-containing mortar is preferably 3 to 30 mm, but is not limited to this depending on the site situation. Note that if the fiber-containing mortar sprayed onto the wall is held down with a trowel or a roll, a more stable wall will be formed.
本考案は、建築構造物の壁面工事は勿論のこ
と、岩盤や地山の崩落防止等の工事に適用でき
る。 The present invention can be applied not only to wall construction of building structures, but also to construction work to prevent collapse of bedrock and earth.
次に実施例をあげてさらに本考案を説明する。 Next, the present invention will be further explained by giving examples.
実施例
普通ポルトランドセメント100重量部、珪砂100
重量部、水40重量部及びセメント減水剤１重量部
をモルタルミキサーで混合してモルタルを調製し
た。また、これとは別に、カルシウムアルミネー
トと石コウからなる急硬材（電気化学工業(株)製商
品名「デンカコスミツク」100重量部、クエン酸
ソーダ２重量部及び水55重量部を混合して急硬材
スラリーを調製した。Example: 100 parts by weight of ordinary Portland cement, 100 parts by weight of silica sand
A mortar was prepared by mixing parts by weight, 40 parts by weight of water, and 1 part by weight of a cement water reducing agent in a mortar mixer. Separately, 100 parts by weight of a rapidly hardening material made of calcium aluminate and gypsum (trade name "Denka Cosmic" manufactured by Denki Kagaku Kogyo Co., Ltd.), 2 parts by weight of sodium citrate, and 55 parts by weight of water were mixed. A rapid hardwood slurry was prepared.
モルタル中のセメント成分に対して急硬材成分
が10重量％になるように調節しながらラインミキ
サーを内蔵した混合機（特殊機化工（株）製）に
送給し、ここで混合後５分で凝結開始するように
急硬モルタルを撹拌混合して耐水紙表面にメタル
ラスを打ちつけた壁面に吹付けた。 The mortar was fed to a mixer with a built-in line mixer (manufactured by Tokushu Kikako Co., Ltd.) while adjusting the hardening material component to be 10% by weight relative to the cement component in the mortar, where it was mixed for 5 minutes. Rapidly hardening mortar was stirred and mixed so that it would start setting, and was sprayed onto a wall with metal lath nailed to the surface of waterproof paper.
これと並行して、市販の耐アルカリガラス繊維
をロービングのままチヨツパーガン（明治機械製
作所社製）に送り込み、チヨツパーガン内部の切
断機により20mm繊維長とし、急硬モルタルの吹付
パターンと同一広がりとなるように角度を調節し
て壁面に吹付けた。 At the same time, commercially available alkali-resistant glass fibers were fed into a Chiyotsper gun (manufactured by Meiji Kikai Seisakusho Co., Ltd.) in their roving state, and the cutting machine inside the Chiyotsper gun cut the fibers to a length of 20 mm, so that the fibers would have the same spread as the spray pattern of the quick-hardening mortar. I adjusted the angle and sprayed it on the wall.
こうして、厚さ10mm程度の壁面工事を行つたと
ころ、吹付後約５分で均一な硬化面となり、脱落
もなく長時間経過後も安定であつた。 In this way, when we worked on a wall with a thickness of about 10 mm, it became a uniform hardened surface within about 5 minutes after spraying, and remained stable even after a long period of time without falling off.
比較のため、これらを混合機に送給しないで、
直接空中で混合するように吹付けたこと以外は、
実施例と同一条件で壁面工事を行つたところ、吹
付後60分経過しても硬化しないなどの不均一硬化
を示したばかりか、モルタルの脱落が生じた。 For comparison, without feeding these to the mixer,
Except for spraying to mix directly in the air.
When wall work was carried out under the same conditions as in the example, not only did the mortar not harden unevenly, such as not curing even after 60 minutes after spraying, but the mortar also fell off.
図面は、本考案の実施例の説明図である。
付号１……モルタル導入管、２……急硬材スラ
リー導入管、３……混合機、４……吹付機、５…
…圧搾ガス、６……急硬モルタル吹付パターン、
７……チヨツパーガン、８……繊維、９……繊維
吹付パターン。
The drawings are explanatory diagrams of embodiments of the present invention. Number 1... Mortar introduction pipe, 2... Rapidly hardened material slurry introduction pipe, 3... Mixer, 4... Spraying machine, 5...
...Compressed gas, 6...Rapid hardening mortar spray pattern,
7... Chotsupagan, 8... Fiber, 9... Fiber spray pattern.
Claims (1)
され、該軸上には複数の直交羽根が設けられたラ
インミキサが固設され前記中心軸の後端には急硬
材スラリ導入管が開口位置され、前記モルタル導
入管の先端側外周に圧搾空気導入室を構成し且つ
急硬材混合モルタルを放出する吹出口を有するノ
ズル外筒が設けられると共に前記モルタル導入管
又はノズル外筒に吹付繊維の射出用チヨツパーガ
ンを吹付角度調節自在に設け、急硬材混合モルタ
ルと吹付繊維とを同時に且つ同一パターンになる
ように放出することを特徴とする繊維モルタル吹
付装置。 A central shaft is fixed inside the tip side of the mortar introduction pipe, a line mixer having a plurality of orthogonal blades is fixed on the shaft, and a hardened material slurry introduction pipe is opened at the rear end of the central shaft. A nozzle outer cylinder is provided on the outer periphery of the distal end side of the mortar introduction pipe, and has a blowout port for discharging the mortar mixed with the rapidly hardened material, and forms a compressed air introduction chamber. 1. A fiber mortar spraying device, characterized in that an injection chopper gun is provided which can freely adjust the spraying angle, and discharges rapidly hardened material mixed mortar and sprayed fibers simultaneously and in the same pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986070756U JPS6246754Y2 (en) | 1986-05-13 | 1986-05-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986070756U JPS6246754Y2 (en) | 1986-05-13 | 1986-05-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61187844U JPS61187844U (en) | 1986-11-22 |
| JPS6246754Y2 true JPS6246754Y2 (en) | 1987-12-19 |
Family
ID=30607629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986070756U Expired JPS6246754Y2 (en) | 1986-05-13 | 1986-05-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6246754Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4829845A (en) * | 1971-08-21 | 1973-04-20 | ||
| JPS4911162A (en) * | 1972-05-30 | 1974-01-31 |
-
1986
- 1986-05-13 JP JP1986070756U patent/JPS6246754Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4829845A (en) * | 1971-08-21 | 1973-04-20 | ||
| JPS4911162A (en) * | 1972-05-30 | 1974-01-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61187844U (en) | 1986-11-22 |
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