JPH028980B2 - - Google Patents
Info
- Publication number
- JPH028980B2 JPH028980B2 JP3440186A JP3440186A JPH028980B2 JP H028980 B2 JPH028980 B2 JP H028980B2 JP 3440186 A JP3440186 A JP 3440186A JP 3440186 A JP3440186 A JP 3440186A JP H028980 B2 JPH028980 B2 JP H028980B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- cement
- quick
- setting agent
- 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.)
- Expired
Links
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- 238000005507 spraying Methods 0.000 claims description 18
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 10
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 8
- -1 alkali metal aluminate Chemical class 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 5
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 5
- 150000008041 alkali metal carbonates Chemical class 0.000 claims description 5
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 2
- 239000001095 magnesium carbonate Substances 0.000 claims description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 2
- 239000004568 cement Substances 0.000 description 20
- 239000000203 mixture Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 230000035515 penetration Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000004677 hydrates Chemical class 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 159000000003 magnesium salts Chemical class 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000003513 alkali Substances 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
- 230000005494 condensation Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
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
- C04B28/02—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
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)
Description
〔産業上の利用分野〕
本発明はセメントあるいはセメント−骨材混合
物の湿式吹付け法に用いられる急結剤に関するも
のである。
〔発明の背景〕
この種の吹付け法には乾式吹付け法と湿式吹付
け法とがある。乾式吹付け法はセメントあるいは
セメント−骨材混合物を水と混練することなくし
て粉状で吹付け面に水と接触させつつ吹付けると
ともに施工する方法であり、湿式吹付け法はセメ
ントと砂、砂利等の骨材との混合物を水と混練し
た混練物を基盤に吹付ける方法であり、何れの方
法においてもセメントの急結を図るために急結剤
が用いられている。
〔従来の技術〕
湿式吹付け法の場合には水と混練した時点で既
にセメント粒子表面に不活性な水和物が生成して
おり、該水和物によつて急結剤による急結効果が
妨害される。したがつて現在ではこのような支障
のない乾式吹付け法が主体となつている。
乾式吹付け法に用いられる急結剤としては例え
ばアルカリ炭酸塩とカルシウムアルミネートとの
混合物が提供されている（特公昭60−4149号）。
〔発明が解決しようとする問題点〕
しかしながら乾式吹付け法は前記したように粉
末を水と接触しつつ吹付けるものであるから粉じ
ん災害が起り易く、また粉末は均一に混合するこ
とが困難である。
〔問題点を解決するための手段〕
本発明は上記従来の問題点を解決する手段とし
てカルシウムアルミネート20〜50重量％、アルカ
リ金属炭酸塩20〜40重量％、硫酸カルシウムおよ
び／または塩基性炭酸マグネシウム５〜30重量
％、およびアルカリ金属アルミネート５〜20重量
％からなる湿式吹付け法に用いる急結剤を提供す
るものである。
本発明を以下に詳細に説明する。
本発明に用いられるカルシウムアルミネートは
一般式nCaO・mAl2O3で表わされるもので、上
記カルシウムアルミネートとしてはCaO・
Al2O3、CaO・2Al2O3、3CaO・Al2O3、12CaO・
7Al2O3、更に該カルシウムアルミネートにハロ
ゲン元素が取入れられた3CaO・3Al2O3・CaF2、
11CaO・7Al2O3・CaF5等が例示される。上記例
示は本発明を限定するものではない。上記カルシ
ウムアルミネートの中で望ましいものとしては
3CaO・Al2O3がある。該3CaO・Al2O3は他のカ
ルシウムアルミネートに比して特に湿式吹付け法
に用いられる場合には取扱かい容易でかつ、良好
な凝結が得られる。
上記カルシウムアルミネート、は急結剤中に20
〜50重量％含有せられるべきである。上記カルシ
ウムアルミネートの含有量が20重量％以下の場合
には湿式吹付け法においては充分な急結性が得ら
れず、一方50重量％以上の場合には他の成分の必
要量が確保出来ず擬凝結が起つて不均一な固結体
を生ずる。
本発明に用いられるアルカリ金属炭酸塩とは例
えば、炭酸カリウム、炭酸ナトリウム、重炭酸カ
リウム、重炭酸ナリウム等であり、湿式吹付け法
における初期の凝結を円滑に行わしめるためには
無水であることが望ましい。
上記アルカリ金属炭酸塩は急結剤中に20〜40重
量％含有せられるべきである。上記アルカリ金属
炭酸塩の含有量が20重量％以下の場合には凝結が
遅れ均一かつ強固な固結体が得られず、40重量％
以上の場合には固結体の強度が低下する。
本発明には硫酸カルシウムおよび／または塩基
性炭酸マグネシウムが用いられるが凝結促進効果
の大きい点では硫酸カルシウム、なかんずく硫酸
カルシウムの無水塩もしくは半水塩が望ましい。
上記カルシウムおよびマグネシウムの塩類は急
結剤中に５〜30重量％含有せられるべきである。
上記カルシウムおよびマグネシウムの塩類が５重
量％以下の場合には凝結開始が遅れ、30重量％以
上の場合には固結体の強度が低下する。
本発明に用いられるアルカリ金属アルミネート
とは例えば、アルミン酸カリウム、アルミン酸ナ
トリウム等であり、上記アルカリ金属アルミネー
トは急結剤中に５〜20重量％含有せられるべきで
ある。上記アルカリ金属アルミネートの含有量が
５重量％以下の場合には凝結開始が遅れて均一な
固結体が得られず、20重量％以上の場合には急結
効果が逆に低下するようになる。
上記組成を有する本発明の急結剤はセメントに
対して通常３〜15重量％程度添加される。
本発明の急結剤を用いて湿式吹付法を実施する
にはセメント、あるいはセメント−骨材混合物と
水とを混練し、更に本発明の急結剤を所定量添加
してスプレーガンにより基盤に吹付ける。この際
セメント−骨材混合物と水との比はセメント100
重量部に対して水が通常40〜70重量部であり、セ
メント−骨材混合物におけるセメント−骨材との
重量比は通常１：４〜１：６である。
〔作用〕
本発明の急結剤はセメントと水との混練の際に
セメント粒子表面に不活性な水和物が形成されて
も、該水和物に妨害されることなくセメントを急
速に凝結せしめる。
〔発明の効果〕
したがつて本発明の急結剤を用いることによつ
て湿式吹付け法においてもセメントの急速な凝結
が得られ、粉じん災害もなくかつ均一な調合が容
易である湿式吹付け法の実用性が高められること
になる。
実施例 １
下記組成の急結剤を調製する。
[Industrial Field of Application] The present invention relates to an quick-setting agent used in wet spraying of cement or cement-aggregate mixtures. [Background of the Invention] This type of spraying method includes a dry spraying method and a wet spraying method. The dry spraying method is a method in which cement or a cement-aggregate mixture is sprayed in powder form onto the sprayed surface without being mixed with water and in contact with water, while the wet spraying method is a method in which cement and sand, This is a method in which a mixture of aggregate such as gravel and water is mixed with water and then sprayed onto the base, and in both methods, a fast-setting agent is used to quickly set the cement. [Prior art] In the case of the wet spraying method, inert hydrates are already formed on the surface of cement particles when they are mixed with water, and these hydrates prevent the quick setting effect of the quick setting agent. is obstructed. Therefore, the dry spraying method, which does not cause such problems, is currently the main method. For example, a mixture of alkali carbonate and calcium aluminate has been provided as a quick setting agent used in the dry spraying method (Japanese Patent Publication No. 4149/1983). [Problems to be solved by the invention] However, as mentioned above, in the dry spraying method, powder is sprayed while coming into contact with water, so dust accidents are likely to occur, and it is difficult to mix the powder uniformly. be. [Means for Solving the Problems] The present invention solves the above conventional problems by using 20 to 50% by weight of calcium aluminate, 20 to 40% by weight of alkali metal carbonates, calcium sulfate and/or basic carbonate. The present invention provides a rapid setting agent for use in a wet spraying method, which comprises 5 to 30% by weight of magnesium and 5 to 20% by weight of an alkali metal aluminate. The present invention will be explained in detail below. The calcium aluminate used in the present invention is represented by the general formula nCaO・mAl 2 O 3 , and the calcium aluminate mentioned above is CaO・
Al 2 O 3 , CaO・2Al 2 O 3 , 3CaO・Al 2 O 3 , 12CaO・
7Al 2 O 3 , 3CaO・3Al 2 O 3・CaF 2 in which a halogen element is further incorporated into the calcium aluminate,
Examples include 11CaO・7Al 2 O 3・CaF 5 and the like. The above examples are not intended to limit the invention. Among the above calcium aluminates, the preferred one is
There is 3CaO・Al 2 O 3 . Compared to other calcium aluminates, 3CaO.Al 2 O 3 is easier to handle and provides better setting, especially when used in wet spraying. The above calcium aluminate is 20% in the quick setting agent.
~50% by weight should be contained. If the calcium aluminate content is less than 20% by weight, sufficient rapid setting cannot be achieved in the wet spraying method, while if it is more than 50% by weight, the necessary amounts of other components cannot be secured. Otherwise, pseudo-condensation occurs, resulting in a non-uniform solid. The alkali metal carbonates used in the present invention include, for example, potassium carbonate, sodium carbonate, potassium bicarbonate, sodium bicarbonate, etc., and must be anhydrous to ensure smooth initial condensation in the wet spraying method. is desirable. The alkali metal carbonate should be contained in the quick setting agent in an amount of 20 to 40% by weight. If the content of the above-mentioned alkali metal carbonate is less than 20% by weight, the coagulation will be delayed and a uniform and strong solid will not be obtained.
In the above case, the strength of the solid body decreases. Calcium sulfate and/or basic magnesium carbonate are used in the present invention, but calcium sulfate, especially anhydrous or hemihydrate salts of calcium sulfate, are preferred in terms of their greater effect of promoting coagulation. The calcium and magnesium salts mentioned above should be contained in the rapid setting agent in an amount of 5 to 30% by weight.
If the amount of the calcium and magnesium salts is less than 5% by weight, the start of coagulation will be delayed, and if it is more than 30% by weight, the strength of the solid will decrease. The alkali metal aluminate used in the present invention is, for example, potassium aluminate, sodium aluminate, etc., and the alkali metal aluminate should be contained in the quick setting agent in an amount of 5 to 20% by weight. If the content of the alkali metal aluminate is less than 5% by weight, the start of coagulation will be delayed and a uniform solidified body will not be obtained, and if it is more than 20% by weight, the rapid setting effect will decrease. Become. The quick setting agent of the present invention having the above composition is usually added in an amount of about 3 to 15% by weight based on the cement. To carry out the wet spraying method using the quick-setting agent of the present invention, cement or a cement-aggregate mixture and water are kneaded, a predetermined amount of the quick-setting agent of the present invention is added, and the mixture is applied to the base using a spray gun. Spray. At this time, the ratio of cement-aggregate mixture to water is cement 100.
The water content is usually 40 to 70 parts by weight, and the cement-to-aggregate weight ratio in the cement-to-aggregate mixture is usually from 1:4 to 1:6. [Function] The quick-setting agent of the present invention can rapidly set cement without being hindered by the hydrates even if inert hydrates are formed on the surface of cement particles during kneading of cement and water. urge [Effects of the Invention] Therefore, by using the quick-setting agent of the present invention, rapid setting of cement can be obtained even in wet spraying, and wet spraying can be achieved without dust hazards and with easy uniform mixing. This will enhance the practicality of the law. Example 1 An rapid setting agent having the following composition is prepared.
【表】
表中の数字は重量％を示す。
上記急結剤を用いて下記の混練物を調製する。
セメント*1：砂*2重量比 １：４
水：セメント（Ｗ／Ｃ） 60重量％
急結剤添加量 ７重量％／セメント
＊1：セメントは普通ポルトランドセメントを
使用した。
＊2：砂はFM2.8のものを使用した。
セメント、砂、水をミキサーボールに入れたモ
ルタルミキサーによつて２分間混練した後急結剤
を添加し15秒高速撹拌して混練物を調製した。
上記混練物はミキサーボールに入れたままです
ばやく、突固めを行い供試体とする。
このようにして得られた供試体を用いて20℃に
おいてプロクター貫入試験器によつて貫入抵抗値
（PSI）を測定する。その結果は第２表に示され
る。[Table] The numbers in the table indicate weight %. The following kneaded product is prepared using the above-mentioned quick-setting agent. Cement *1 : Sand *2 Weight ratio 1:4 Water: Cement (W/C) 60% by weight Accelerating agent addition amount 7% by weight/cement * 1 : Ordinary Portland cement was used as the cement. * 2 : Sand with FM2.8 was used. Cement, sand, and water were mixed for 2 minutes using a mortar mixer placed in a mixer ball, then an accelerating agent was added and the mixture was stirred at high speed for 15 seconds to prepare a kneaded product. The above-mentioned kneaded material is quickly compacted while still in the mixer bowl to obtain a specimen. Using the specimen thus obtained, the penetration resistance value (PSI) is measured using a Proctor penetration tester at 20°C. The results are shown in Table 2.
【表】 実施例 ２ 下記組成の急結剤を調製する。【table】 Example 2 Prepare an accelerating agent with the following composition.
【表】
表中の数字は重量％を示す。
上記急結剤を用いて実施例１と同様にして供試
体を作製し貫入抵抗値を測定した結果を第４表に
示す。[Table] The numbers in the table indicate weight %. Test specimens were prepared in the same manner as in Example 1 using the above rapid setting agent, and the penetration resistance values were measured. Table 4 shows the results.
【表】 比較例 １ 下記組成の急結剤を調製する。【table】 Comparative example 1 Prepare an accelerating agent with the following composition.
【表】
上記急結剤を用いて実施例１と同様にして供試
体を作製し貫入抵抗値を測定した結果を第６表に
示す。[Table] Test specimens were prepared in the same manner as in Example 1 using the above quick-setting agent, and the penetration resistance values were measured. Table 6 shows the results.
【表】 比較例 ２ 下記の組成の急結剤を調製する。【table】 Comparative example 2 Prepare an accelerating agent with the following composition.
【表】
上記急結剤を用いて実施例１と同様にして供試
体を作製し貫入抵抗値を測定した結果を第８表に
示す。[Table] Test specimens were prepared in the same manner as in Example 1 using the above-mentioned quick-setting agent, and the penetration resistance values were measured. Table 8 shows the results.
【表】
上記実施例１，２、比較例１，２の結果、即ち
第２表、第４表、第６表、第８表をみると本発明
の試料No.１〜No.12、は良好な急結性および強度を
示すが本発明の必須成分を欠く試料No.13〜No.18は
急結性に劣り強度も充分でないことが明らかであ
る。
乾式試験
本発明の試料としてNo.３およびNo.９をとり比較
試料としてNo.13およびNo.16をとる。
上記各試料について乾式法にて下記の通り供試
体を作成した。
セメントと砂とをミキサーボールに入れモルタ
ルミキサーによつて30秒混合した後急結剤を添加
し更に30秒間混合する。その後水を添加して10秒
間高速撹拌し、得られた混練物をミキサーボール
に入れたまますばやく突固めを行い供試体を作製
する。なお一般に乾式法では湿式法と比較して水
−セメント比、（Ｗ／Ｃ）が少なくなるので本比
較試験の場合もこれにならい水−セメント比を50
重量％とした。
このようにして得られた供試体によつて実施例
１と同様に貫入抵抗値を測定する。
試料No.３について乾式試験における貫入抵抗値
を実施例１の湿式試験における結果と比較したグ
ラフを第１図に示す。同様に試料No.８，15，18に
ついての湿式−乾式比較グラフを夫々第２図〜第
４図に示す。図中○ぁ檗[Table] Looking at the results of Examples 1 and 2 and Comparative Examples 1 and 2, that is, Tables 2, 4, 6, and 8, samples No. 1 to No. 12 of the present invention are It is clear that samples No. 13 to No. 18, which exhibit good quick-setting properties and strength, but lack the essential components of the present invention, have poor quick-setting properties and do not have sufficient strength. Dry test No. 3 and No. 9 are taken as samples of the present invention, and No. 13 and No. 16 are taken as comparative samples. Specimens for each of the above samples were prepared using a dry method as described below. Cement and sand are placed in a mixer bowl and mixed for 30 seconds using a mortar mixer, then an accelerating agent is added and mixed for an additional 30 seconds. After that, water is added and stirred at high speed for 10 seconds, and the resulting kneaded mixture is quickly compacted while being placed in a mixer ball to prepare a specimen. Generally, in the dry method, the water-cement ratio (W/C) is lower than in the wet method, so in this comparative test, the water-cement ratio was set to 50.
It was expressed as weight%. Using the specimen thus obtained, the penetration resistance value is measured in the same manner as in Example 1. A graph comparing the penetration resistance value in the dry test for Sample No. 3 with the result in the wet test of Example 1 is shown in FIG. Similarly, wet-dry comparison graphs for Sample Nos. 8, 15, and 18 are shown in FIGS. 2 to 4, respectively. In the picture ○†a
Claims (1)
カリ金属炭酸塩20〜40重量％、硫酸カルシウムお
よび／または塩基性炭酸マグネシウム５〜30重量
％、およびアルカリ金属アルミネート５〜20重量
％からなる湿式吹付け法に用いる急結剤。1 Wet spraying consisting of 20-50% by weight of calcium aluminate, 20-40% by weight of alkali metal carbonate, 5-30% by weight of calcium sulfate and/or basic magnesium carbonate, and 5-20% by weight of alkali metal aluminate A quick-setting agent used in the law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3440186A JPS62191454A (en) | 1986-02-19 | 1986-02-19 | Accelerator for wet spray method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3440186A JPS62191454A (en) | 1986-02-19 | 1986-02-19 | Accelerator for wet spray method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62191454A JPS62191454A (en) | 1987-08-21 |
| JPH028980B2 true JPH028980B2 (en) | 1990-02-28 |
Family
ID=12413163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3440186A Granted JPS62191454A (en) | 1986-02-19 | 1986-02-19 | Accelerator for wet spray method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62191454A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2710337B2 (en) * | 1988-05-10 | 1998-02-10 | 電気化学工業株式会社 | Shotcrete method |
| EP0416134A4 (en) * | 1989-03-28 | 1991-08-28 | Onoda Cement Company, Ltd. | Cement hardening accelerator and its production |
| FR2659895A1 (en) * | 1990-03-22 | 1991-09-27 | Nouvion Bernard | Process for the manufacture of materials made of stabilised, compressed and crystallised soil aggregates and the product obtained |
| AU2007318532B2 (en) * | 2006-11-09 | 2012-11-01 | Denki Kagaku Kogyo Kabushiki Kaisha | Set accelerator and technique for spraying with the same |
-
1986
- 1986-02-19 JP JP3440186A patent/JPS62191454A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62191454A (en) | 1987-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5360841A (en) | Use of ethylene oxide/propylene oxide block copolymers in hydraulic binder materials and materials so obtained | |
| JPH028980B2 (en) | ||
| JPH0553742B2 (en) | ||
| JP3718697B2 (en) | High strength shotcrete cement and high strength shotcrete | |
| JPH0753597B2 (en) | Cement admixture and cement composition | |
| JP2764030B2 (en) | Concrete viscosity reducing agent | |
| JP4878752B2 (en) | Quick hardening material and quick hardening cement composition | |
| JP4617073B2 (en) | Quick hardening material and quick hardening cement composition | |
| JPH0280358A (en) | Cement admixture | |
| JPH07115899B2 (en) | Shotcrete additive | |
| JP2898995B2 (en) | Cement quick setting agent | |
| JP3097422B2 (en) | Hydration reaction suppression method by cement coating | |
| JPH0364464B2 (en) | ||
| JPH0680452A (en) | Cement admixture and cement composition | |
| JPH0319179B2 (en) | ||
| JPH0676243B2 (en) | Cement quick setting agent | |
| JPH02167847A (en) | Production of improved powdery cement composition | |
| SU1756298A1 (en) | Binder | |
| JPH0725577B2 (en) | A quick-setting agent for wet spraying of cement mortar or concrete. | |
| JPH0788245B2 (en) | Cement hardening accelerator | |
| JPH089498B2 (en) | A method for retarding the hardening of cement containing lime aluminate. | |
| JPH10265248A (en) | Cement admixture and cement composition using the same | |
| JP7074527B2 (en) | Cement composite | |
| SU958368A1 (en) | Expanding binder | |
| JPH10305418A (en) | Method for regulating concrete setting time |