JPH0724815A - Spraying of cement - Google Patents
Spraying of cementInfo
- Publication number
- JPH0724815A JPH0724815A JP19402793A JP19402793A JPH0724815A JP H0724815 A JPH0724815 A JP H0724815A JP 19402793 A JP19402793 A JP 19402793A JP 19402793 A JP19402793 A JP 19402793A JP H0724815 A JPH0724815 A JP H0724815A
- Authority
- JP
- Japan
- Prior art keywords
- magnesia
- spraying
- cement
- slurry
- phosphate
- 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
Classifications
-
- 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
- C04B28/34—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 cold phosphate binders
- C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
-
- 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
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、即硬性のマグネシア−
ホスフェート系セメントを用いて吹付時のリバウンド率
が低く、かつ優れた付着性とコンクリート強度を与える
セメントの吹付方法に関する。BACKGROUND OF THE INVENTION The present invention relates to a quick-hardening magnesia
The present invention relates to a method for spraying a cement using a phosphate-based cement, which has a low rebound rate at the time of spraying and gives excellent adhesion and concrete strength.
【０００２】[0002]
【従来の技術】トンネル堀削工事において、地肌露出面
の落盤や風化による剥落などを防止するために、従来か
らコンクリートを吹付ける工法が実施されている。この
吹付け工法には、通常、主剤となるセメント成分として
ポルトランドセメントが用いられ、これにカルシウムア
ルミネート、アルミン酸塩、炭酸ナトリウム、水ガラス
または仮焼明礬などの急結剤および砂、砕石等の骨材を
配合して吹付材が形成されている。ところが、ポルトラ
ンドセメント系の吹付材は、吹付時のリバウンド率が高
いうえ、硬化時間が比較的長いために初期強度が低く、
往々にして吹付後のコンクリート面が脱落するなどの欠
点があった。2. Description of the Related Art In tunnel excavation work, a method of spraying concrete has been conventionally practiced in order to prevent the exposed surface of the ground from falling off or coming off due to weathering. In this spraying method, Portland cement is usually used as the main cement component, and calcium aluminate, aluminate, sodium carbonate, water glass or quick-setting agents such as calcined alum and sand, crushed stone, etc. The sprayed material is formed by mixing the aggregates. However, the Portland cement-based spray material has a high rebound rate at the time of spraying and a low initial strength due to the relatively long curing time.
Often, there were drawbacks such as the concrete surface falling off after spraying.
【０００３】一方、ポルトランドセメントと全く異なる
特殊セメントとして、マグネシア−ホスフェート系セメ
ントが知られている。このマグネシア−ホスフェート系
セメントは、マグネシアとリン酸二水素アンモニウムを
主剤とし、これに骨材、硬化遅延剤などを配合して構成
されるセメント系で、例えば建築物、道路などの補修
材、金属鋳造用の鋳型材、耐火物のコーティング材など
に適用して優れた効果を発揮する（特開平３−80137 号
公報、特開平３−80138 号公報）。On the other hand, a magnesia-phosphate cement is known as a special cement which is completely different from Portland cement. This magnesia-phosphate cement is a cement type composed mainly of magnesia and ammonium dihydrogen phosphate, and an aggregate, a hardening retarder, etc., for example, a repair material for buildings, roads, etc., a metal. It exhibits excellent effects when applied to casting mold materials, coating materials for refractories, etc. (JP-A-3-80137 and JP-A-3-80138).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、マグネ
シア−ホスフェート系セメントは硬化時間が非常に短い
ため、水と短時間内に混練して直ちに打設しなければ確
実な施工がでいないなど実用面での問題がある。また、
このような特性上、これまで吹付材として検討された例
は見当たらないが、短時間内に硬化し、初期強度の高い
硬化物に転化する優れた即硬性は、吹付材の効能として
極めて魅力的なものである。However, since the curing time of magnesia-phosphate cement is very short, it cannot be surely constructed unless it is kneaded with water within a short period of time and immediately placed. I have a problem. Also,
Due to such characteristics, no examples have been studied so far as a spray material, but the excellent quick-hardening property, which cures in a short time and converts into a cured product with high initial strength, is extremely attractive as an effect of the spray material. It is something.
【０００５】本発明者らは、かかるポルトランドセメン
トにはないマグネシア−ホスフェート系セメント固有の
特性を生かし、これを吹付材として適用する可能性につ
き検討を重ねた結果、そのスラリー化を吹付機の輸送管
内でおこなうと操業性よく吹付けすることができ、しか
もリバウンド率が低く、高強度で耐久性の良好な吹付面
が形成し得ることを確認した。The present inventors have made extensive use of the characteristics unique to magnesia-phosphate cement not found in such Portland cement, and have studied the possibility of applying it as a spray material. It was confirmed that spraying with good operability was possible when performed in a pipe, a rebound rate was low, and a sprayed surface with high strength and good durability could be formed.
【０００６】本発明は上記の知見に基づいて開発された
もので、その目的は、マグネシア−ホスフェート系セメ
ントを用いて、吹付時のリバウンド率が低く、かつ吹付
後に優れた付着性ならびに硬化強度を付与することがで
きるセメントの吹付方法を提供することにある。The present invention was developed on the basis of the above findings, and its object is to use magnesia-phosphate cement to achieve a low rebound rate at the time of spraying and to obtain excellent adhesion and curing strength after spraying. It is to provide a method for spraying cement that can be applied.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めの本発明によるセメントの吹付方法は、マグネシア−
リン酸二水素アンモニウムを主剤とするマグネシア−ホ
スフェート系セメントを吹付機の輸送管中で輸送混合し
ながらスラリー化し、該スラリーを施工面へ吹付けるこ
とを構成上の特徴とする。The method for spraying cement according to the present invention for achieving the above object is a magnesia-based method.
A constitutional feature is that a magnesia-phosphate cement containing ammonium dihydrogen phosphate as a main component is made into a slurry while being transported and mixed in a transport pipe of a spraying machine, and the slurry is sprayed onto a construction surface.
【０００８】本発明に用いる吹付材の主剤となるマグネ
シア−ホスフェート系セメントは、マグネシアとリン酸
二水素アンモニウムからなる組成物である。マグネシア
は、マグネシアクリンカーを粉砕した微粉末であり、リ
ン酸二水素アンモニウムは、結晶粉末または水溶液のい
ずれかである。このセメント成分は、下記 (1)式の反応
により速やかに固化するが、この際のＭｇＯ／ＮＨ4 Ｈ
ＰＯ4 モル比は少なくとも１．８以上、好ましくは２〜
３の範囲に設定される。 ＭｇＯ＋ＮＨ4 Ｈ2 ＰＯ4 ＋５Ｈ2 Ｏ→ＮＨ4 ＭｇＰＯ4 ・６Ｈ2 Ｏ…(1) The magnesia-phosphate cement, which is the main component of the spraying material used in the present invention, is a composition comprising magnesia and ammonium dihydrogen phosphate. Magnesia is a fine powder of crushed magnesia clinker, and ammonium dihydrogen phosphate is either a crystalline powder or an aqueous solution. This cement component quickly solidifies by the reaction of the following formula (1), but MgO / NH 4 H
The PO 4 molar ratio is at least 1.8 or more, preferably 2 to
It is set in the range of 3. MgO + NH 4 H 2 PO 4 + 5H 2 O → NH 4 MgPO 4 · 6H 2 O ... (1)
【０００９】マグネシア−ホスフェート系セメントは、
そのまま水を添加して吹付材とすることもできるが、助
剤として骨材、補強剤、ゲルタイム調整剤および粘度調
整剤から選ばれた少なくとも１種を添加配合してスラリ
ー化することが好ましい。The magnesia-phosphate cement is
Although it is possible to add water as it is to form a spray material, it is preferable to add and blend at least one selected from an aggregate, a reinforcing agent, a gel time adjusting agent and a viscosity adjusting agent as an auxiliary agent to form a slurry.
【００１０】骨材としては、粗骨剤または細骨剤が適宜
用いられ、セメントに対して不活性で強度のあるもので
あれば材質に特に限定はない。通常、珪砂や砕石などが
使用される。補強剤としては、例えばシリカヒューム、
ホワイトカーボン、籾殻灰などの微粉状シリカ、フライ
アッシュ、天然もしくは合成ゼオライトなどが挙げられ
る。ゲルタイム調整剤としては、例えばホウ酸ソーダ、
オキシカルボン酸アルカリ、リン酸アルカリ、ポリリン
酸アルカリ、有機ホスホン酸アルカリなどを挙げること
ができ、また粘度調整剤としてはベントナイト、粘土
類、水溶性高分子などが例示される。As the aggregate, a coarse bone agent or a fine bone agent is appropriately used, and the material is not particularly limited as long as it is inert to cement and strong. Usually, silica sand and crushed stone are used. Examples of the reinforcing agent include silica fume,
Examples include white carbon, finely powdered silica such as rice husk ash, fly ash, and natural or synthetic zeolite. As the gel time adjusting agent, for example, sodium borate,
Examples thereof include alkali oxycarboxylate, alkali phosphate, alkali polyphosphate, and alkali organic phosphonate, and examples of the viscosity modifier include bentonite, clays, water-soluble polymers and the like.
【００１１】これら助剤の配合割合は、施工すべき構造
物または地盤の性状や用いる助剤の種類や物性などによ
り幅広く設定されるため一様ではないが、多くの場合、
セメント主剤１００重量部に対して多くとも１００重量
部までの範囲である。The blending ratio of these auxiliaries is not uniform because it is widely set depending on the properties of the structure or ground to be constructed, the type and physical properties of the auxiliaries used, etc.
The range is up to 100 parts by weight with respect to 100 parts by weight of the cement base.
【００１２】本発明に係るセメントの吹付方法は、上記
のマグネシア−リン酸二水素アンモニウムを主剤とする
マグネシア−ホスフェート系セメントを吹付機の輸送管
中で輸送混合しながらスラリー化したのち、該スラリー
をノズルを介して施工面に吹付ける操作でおこなわれ
る。マグネシア−ホスフェート系セメントと水を予め混
合したスラリーを用いて吹付しようとすると、硬化が進
行して吹付機の輸送管やノズルの閉塞化を招き、円滑な
吹付操作ができなくなる。In the method for spraying cement according to the present invention, the above-mentioned magnesia-phosphate cement containing magnesia-ammonium dihydrogen phosphate as a main component is slurried while being transported and mixed in a transport pipe of a spraying machine, and then the slurry. Is sprayed onto the construction surface through the nozzle. If spraying is performed using a slurry in which magnesia-phosphate cement and water are premixed, hardening progresses and the transport pipes and nozzles of the spraying machine are clogged, and smooth spraying operation becomes impossible.
【００１３】マグネシア−ホスフェート系セメントを吹
付機によりスラリー状態で施工面へ吹付けるには、次の
二つの態様が採られる。その一つは、リン酸二水素アン
モニウムの水溶液とマグネシアを主剤とする水性スラリ
ーを吹付機に圧搾空気で送り込み、輸送管中で輸送混合
させながらマグネシア−ホスフェート系セメントのスラ
リーを形成し、ノズル先端から施工面へ吹付ける工法
（湿式法）である。他の方法は、マグネシア−ホスフェ
ート系セメントを主剤とする組成混合粉末を圧搾空気で
吹付機に圧送し、輸送管の途中で水を添加混合してスラ
リー化したのち、ノズルを通して施工面へ吹付ける工法
（乾式法）である。これらの方法は、施工の目的、場
所、使用薬剤の物性などに応じて適宜に使い分けること
ができるが、操作の面からは前者の湿式法を採ることが
好ましい。To spray the magnesia-phosphate cement on the work surface in a slurry state with a spraying machine, the following two modes are adopted. One of them is to send an aqueous solution of ammonium dihydrogen phosphate and an aqueous slurry containing magnesia as a main component to the spraying machine with compressed air to form a slurry of magnesia-phosphate cement while transporting and mixing in a transport pipe, and nozzle tip. It is a construction method (wet method) of spraying onto the construction surface. Another method is to send a composition mixed powder containing magnesia-phosphate cement as a main component under pressure to a spraying machine, add water in the middle of a transport pipe to mix and mix it into a slurry, and then spray it onto a construction surface through a nozzle. It is a construction method (dry method). These methods can be appropriately used depending on the purpose of construction, location, physical properties of chemicals used, and the like, but from the viewpoint of operation, it is preferable to adopt the former wet method.
【００１４】[0014]
【作用】本発明の吹付方法によれば、マグネシア−ホス
フェート系セメントの主剤となるマグネシアとリン酸二
水素アンモニウムとが上記した (1)式の反応を介して硬
化し、セメント質としての接着作用を営む。該硬化反応
は極めて速やかに進行するため、通常のポルトランドセ
メント系の吹付材に比べて初期強度が高く、施工面に対
して優れた付着性（結合性）を示す。なお、この反応
は、マグネシアとリン酸二水素アンモニウムの当量で進
行するが、瞬間的な固液の不均質反応であるためマグネ
シアは過剰であることが必要になる。したがって、前述
したようにＭｇ０はＮＨ4 Ｈ2 ＰＯ4 に対するモル比と
して少なくとも１．８倍、好ましくは２〜３倍である場
合に円滑な硬化反応が進行する。According to the spraying method of the present invention, magnesia, which is the main component of magnesia-phosphate cement, and ammonium dihydrogen phosphate are hardened through the reaction of the above formula (1), and the adhesive action as cementum is obtained. Run. Since the curing reaction proceeds extremely quickly, the initial strength is higher than that of a normal Portland cement-based spraying material, and excellent adhesion (bondability) to the construction surface is exhibited. This reaction proceeds with an equivalent amount of magnesia and ammonium dihydrogen phosphate, but since it is an instantaneous heterogeneous reaction of solid and liquid, magnesia needs to be excessive. Therefore, as described above, when the molar ratio of Mg0 to NH 4 H 2 PO 4 is at least 1.8 times, preferably 2 to 3 times, the smooth curing reaction proceeds.
【００１５】助剤として適宜に配合する珪砂などは骨材
として、微細シリカなどは補強剤として硬化したコンク
リートの強度発現を助長する。またホウ酸アルカリやキ
レート剤は、硬化反応を制御してゲルタイムを調整する
ために機能する。リン酸二水素アルカリは、アンモニア
臭を実質的に除く作用をなし、粘土などはセメントの接
着性をより改善して吹付時のリバウンド率を減少させる
機能を果たす。したがって、助剤の選択と配合比率を的
確に設定することにより、従来よりも一層効果的で操業
性のよい吹付工法が可能となる。Silica sand or the like, which is appropriately mixed as an auxiliary agent, serves as an aggregate, and fine silica or the like serves as a reinforcing agent to promote strength development of hardened concrete. Further, the alkali borate and the chelating agent function to control the curing reaction and adjust the gel time. Alkali dihydrogen phosphate has a function of substantially removing the smell of ammonia, and clay and the like have a function of further improving the adhesiveness of cement and reducing the rebound rate during spraying. Therefore, by selecting the auxiliary agent and setting the compounding ratio appropriately, it becomes possible to realize a spraying method which is more effective than the conventional one and has good operability.
【００１６】[0016]
【実施例】以下、本発明の実施例を比較例と対比しなが
ら具体的に説明する。EXAMPLES Examples of the present invention will be specifically described below in comparison with comparative examples.
【００１７】実施例１〜５ 水道水にリン酸二水素アンモニウムを溶解し、濃度５０
重量％の水溶液（Ａ液）を調製した。これとは別に、表
１に示す成分を混合してマグネシアを主剤とする組成の
水性スラリー（Ｂ液）を調製した。Examples 1 to 5 Ammonium dihydrogen phosphate was dissolved in tap water to a concentration of 50.
A wt% aqueous solution (Liquid A) was prepared. Separately from this, the components shown in Table 1 were mixed to prepare an aqueous slurry (B liquid) having a composition containing magnesia as a main component.
【００１８】表１に示した比率のＡ液とＢ液を吹付機の
輸送管に圧搾空気で圧入し、輸送管中で輸送混合させな
がらマグネシア−ホスフェート系セメントのスラリーを
形成し、ノズル先端からビーム型枠に吹付けた。各吹付
材における吹付時のリバウンド率、吹付硬化体の圧縮強
度および吹付面の状態（目視観察）を測定し、その結果
を表２に示した。なお、リバウンド率は、ビーム型枠
（１５０×１５０×７００mm）を約７０°傾斜させた面
に吹付けた際に落下した材料重量を吹付使用材料の重量
で除した値の百分率で示し、硬化体の圧縮強度は、前記
と同一のビーム型枠を用いて端板の１枚を外した状態で
吹付けをおこない、２８日経過後に供試体を採取してＪ
ＩＳ １１１４に準じて圧縮強度を測定した値で示し
た。Liquids A and B in the ratios shown in Table 1 were pressed into the transportation pipe of the spraying machine with compressed air to form a magnesia-phosphate cement slurry while being transported and mixed in the transportation pipe. Sprayed on the beam formwork. The rebound rate at the time of spraying, the compression strength of the spray-cured product, and the state of the sprayed surface (visual observation) were measured for each sprayed material, and the results are shown in Table 2. The rebound rate is expressed as a percentage of the value of the weight of the material dropped when the beam formwork (150 x 150 x 700 mm) was sprayed on the surface inclined by about 70 ° divided by the weight of the material used for spraying. Regarding the compressive strength of the body, the same beam form as above was used for spraying with one end plate removed, and after 28 days, the specimen was sampled and J
The compression strength was measured according to IS 1114.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】比較例 ポルトランドセメント３６０kg、砂１０２８kg、砕石６
８５kg、水２１６kgに急結剤（アルシウムアルミネー
ト:70wt%、無水炭酸ナトリウム:25wt%、アルミン酸ソー
ダ:5wt% ）２０kgを混合したスラリーを吹付材とし、吹
付機を用いて実施例と同様に吹付試験をおこなった。そ
の結果、リバウンド率は３６％で、２８日後における硬
化体の圧縮強度は１３６kg/cm2であった。したがって、
本発明の吹付方法は従来工法に比べて吹付時および吹付
後の状態が著しく改善されていることが認められる。Comparative Example Portland cement 360 kg, sand 1028 kg, crushed stone 6
A slurry prepared by mixing 85 kg, 216 kg of water with 20 kg of a quick-setting agent (alcium aluminate: 70 wt%, anhydrous sodium carbonate: 25 wt%, sodium aluminate: 5 wt%) was used as a spraying material, and a spraying machine was used. The spraying test was performed on. As a result, the rebound rate was 36%, and the compression strength of the cured product after 28 days was 136 kg / cm 2 . Therefore,
It can be seen that the spraying method of the present invention has significantly improved the condition during spraying and after spraying as compared with the conventional method.
【００２２】[0022]
【発明の効果】以上のとおり、本発明に係るセメントの
吹付方法によれば、従来吹付材として注目されなかった
即硬性のマグネシア−ホスフェート系セメントを用い、
吹付時のリバウンド率が低く、かつ従来の吹付コンクリ
ートに比べて優れた付着性と圧縮強度を付与することが
可能となる。そのうえ、吹付操作も円滑におこなうこと
ができるから、各種地盤の強化改良、トンネル内の止水
補修などに極めて有用である。特に耐海水性が良好なた
め、海岸付近の土木工事、海底トンネルの工事や補修等
の目的に対して効果が期待できる。As described above, according to the method for spraying cement according to the present invention, the immediate-hardening magnesia-phosphate cement which has not been noticed as a spraying material is used.
The rebound rate at the time of spraying is low, and it is possible to give excellent adhesiveness and compressive strength as compared with conventional sprayed concrete. In addition, since the spraying operation can be performed smoothly, it is extremely useful for strengthening and improving various types of ground, repairing water stops in tunnels, etc. In particular, since it has good seawater resistance, it can be expected to be effective for purposes such as civil engineering work near the coast, construction and repair of subsea tunnels.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三好 栄治 東京都江東区亀戸９丁目15番１号 日本化 学工業株式会社研究開発本部内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Eiji Miyoshi 9-15-1, Kameido, Koto-ku, Tokyo Nihon Kagaku Kogyo Co., Ltd.
Claims (3)
を主剤とするマグネシア−ホスフェート系セメントを吹
付機の輸送管中で輸送混合しながらスラリー化し、該ス
ラリーを施工面へ吹付けることを特徴とするセメントの
吹付方法。1. A cement characterized in that a magnesia-phosphate-based cement containing magnesia-ammonium dihydrogen phosphate as a main component is made into a slurry while being transported and mixed in a transport pipe of a spraying machine, and the slurry is sprayed onto a construction surface. Spraying method.
グネシアを主剤とする水性スラリーを吹付機の輸送管内
で混合させてマグネシア−ホスフェート系セメントのス
ラリーを形成する請求項１記載のセメントの吹付方法。2. The method for spraying cement according to claim 1, wherein an aqueous solution of ammonium dihydrogen phosphate and an aqueous slurry containing magnesia as a main component are mixed in a transportation pipe of a spraying machine to form a slurry of magnesia-phosphate cement.
粘度調整剤から選ばれた少なくとも１種の助剤を添加し
てマグネシア−ホスフェート系セメントのスラリーを形
成する請求項１又は２記載のセメントの吹付方法。3. The cement according to claim 1, wherein at least one auxiliary selected from an aggregate, a reinforcing agent, a gel time adjusting agent and a viscosity adjusting agent is added to form a magnesia-phosphate cement slurry. Spraying method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19402793A JPH0724815A (en) | 1993-07-09 | 1993-07-09 | Spraying of cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19402793A JPH0724815A (en) | 1993-07-09 | 1993-07-09 | Spraying of cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0724815A true JPH0724815A (en) | 1995-01-27 |
Family
ID=16317727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19402793A Pending JPH0724815A (en) | 1993-07-09 | 1993-07-09 | Spraying of cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0724815A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2742142A1 (en) * | 1995-12-08 | 1997-06-13 | Rhone Poulenc Chimie | NEW BONDING PHASE FOR PHOSPHOMAGNETIC CEMENTS AND THEIR USE FOR THE PREPARATION OF MORTARS |
| US8167995B2 (en) | 2008-06-12 | 2012-05-01 | Latitude 18, Inc. | Inorganic phosphate resins and method for their manufacture |
| US8425717B2 (en) | 2010-02-09 | 2013-04-23 | Latitude 18, Inc. | Phosphate bonded composites and methods |
| US8557342B2 (en) | 2009-12-11 | 2013-10-15 | Latitude 18, Inc. | Inorganic phosphate corrosion resistant coatings |
| US8858702B2 (en) | 2009-12-11 | 2014-10-14 | Latitude 18, Inc. | Inorganic phosphate compositions and methods |
| US10422041B2 (en) | 2009-12-18 | 2019-09-24 | Latitude 18, Inc | Inorganic phosphate corrosion resistant coatings |
-
1993
- 1993-07-09 JP JP19402793A patent/JPH0724815A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2742142A1 (en) * | 1995-12-08 | 1997-06-13 | Rhone Poulenc Chimie | NEW BONDING PHASE FOR PHOSPHOMAGNETIC CEMENTS AND THEIR USE FOR THE PREPARATION OF MORTARS |
| WO1997021639A1 (en) * | 1995-12-08 | 1997-06-19 | Rhodia Chimie | Novel binding phase for phosphorus-magnesium cements and use thereof for preparing mortars |
| US5718757A (en) * | 1995-12-08 | 1998-02-17 | Rhone-Poulenc Chimie | Binding phase for phosphomagnesium cements and their use for the preparation of mortars |
| US8167995B2 (en) | 2008-06-12 | 2012-05-01 | Latitude 18, Inc. | Inorganic phosphate resins and method for their manufacture |
| US8557342B2 (en) | 2009-12-11 | 2013-10-15 | Latitude 18, Inc. | Inorganic phosphate corrosion resistant coatings |
| US8858702B2 (en) | 2009-12-11 | 2014-10-14 | Latitude 18, Inc. | Inorganic phosphate compositions and methods |
| US10422041B2 (en) | 2009-12-18 | 2019-09-24 | Latitude 18, Inc | Inorganic phosphate corrosion resistant coatings |
| US8425717B2 (en) | 2010-02-09 | 2013-04-23 | Latitude 18, Inc. | Phosphate bonded composites and methods |
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