JPS63297255A - Dust-suppressing agent - Google Patents
Dust-suppressing agentInfo
- Publication number
- JPS63297255A JPS63297255A JP13223487A JP13223487A JPS63297255A JP S63297255 A JPS63297255 A JP S63297255A JP 13223487 A JP13223487 A JP 13223487A JP 13223487 A JP13223487 A JP 13223487A JP S63297255 A JPS63297255 A JP S63297255A
- Authority
- JP
- Japan
- Prior art keywords
- dust
- cement
- weight
- polyethylene oxide
- molecular weight
- 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
- 239000000428 dust Substances 0.000 claims abstract description 26
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 12
- 239000004094 surface-active agent Substances 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 abstract description 13
- 239000003795 chemical substances by application Substances 0.000 abstract description 8
- 239000004570 mortar (masonry) Substances 0.000 abstract description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 abstract description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 abstract description 2
- -1 ethylene, propylene Chemical group 0.000 abstract description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 abstract description 2
- 239000011976 maleic acid Substances 0.000 abstract description 2
- 239000000178 monomer Substances 0.000 abstract description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 2
- 229920002554 vinyl polymer Polymers 0.000 abstract description 2
- 150000008064 anhydrides Chemical class 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 238000007334 copolymerization reaction Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920003169 water-soluble polymer Polymers 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はコンクリートあるいはモルタルの吹き付は工法
における粉じんの発生を減少させることを目的とする粉
じん低減剤に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a dust reducing agent for reducing dust generation in concrete or mortar spraying construction methods.
（従来技術とその問題点）
従来、コンフートあるいはモルタルの吹き付は工法とし
ては湿式１法、乾式１法がある。湿式１法はセメント、
骨材及び水をミキサーで練りまぜた後、圧さく空気で圧
送し、ノズルから吹き付ける。乾式１法はセメントと骨
材の空練り混合物と水を別々に圧さく空気で送り、ノズ
ルで合流させて吹き付ける。これら吹き付は工法はトン
ネル覆工に使用される場合が多く、吹き付は施工時の粉
じんやミストの発生が作業環境上の重大な問題となって
おり、この改善が強く要望されている。(Prior art and its problems) Conventionally, there are two methods for spraying comfort or mortar: a wet method and a dry method. Wet method 1 is cement,
After kneading the aggregate and water with a mixer, it is compressed with compressed air and sprayed through a nozzle. In the dry method 1, an air-mixed mixture of cement and aggregate and water are separately compressed and sent with air, then combined with a nozzle and sprayed. These spraying methods are often used for tunnel lining, and the generation of dust and mist during construction poses a serious problem in the working environment, and there is a strong demand for improvement.
本発明者らは先に、水溶性高分子を一成分とする粉しん
低減剤を水溶液として添加する方法を提案した（特開昭
５８−１３５２６．特開昭５８−１３５２６８）。The present inventors previously proposed a method in which a dust reducing agent containing a water-soluble polymer as one component is added as an aqueous solution (JP-A-58-13526 and JP-A-58-135268).
水溶性高分子としてはグアーガム又はその変性体、ポリ
アクリルアミド部分加水分解物、アクリルアミド°−メ
チルメタクリレート共重合体の部分加水分解物、アクリ
ルアミド−アクリル酸ナトリウム共重合体、アクリルア
ミド共重合体、ポリエチレンオキサイド、ポリビニルア
ルコール、ポリアクリル酸ナトリウム、ヒドロキシプロ
ピルメチルセルロース、ヒドロキシエチルセルロース、
カルボキシメチルセルロースなどが知られている。Examples of water-soluble polymers include guar gum or modified products thereof, polyacrylamide partial hydrolyzate, acrylamide °-methyl methacrylate copolymer partial hydrolyzate, acrylamide-sodium acrylate copolymer, acrylamide copolymer, polyethylene oxide, Polyvinyl alcohol, sodium polyacrylate, hydroxypropyl methyl cellulose, hydroxyethyl cellulose,
Carboxymethylcellulose and the like are known.
かかる方法では、粉じん低減効果りよ非常に大きいもの
の高粘性水溶液を吸う為に特殊な定量ｉ：′、ンブが必
要で、吹き付はノズル付近の配管が多く複雑になり経済
性、作業性が低下する。又、定量水ンブのトラブルが多
く保守管理に手間がかかるという問題があった。 一方
、水溶性高分子は粉末のまま骨材とあらかじめ混合して
からセメントを加える方法、骨を才とセメントの空練り
混合物を調整してから添加する方法、粉末のセメント急
結剤と混合してから急結剤と共に添加する方法などいず
れの方法で添加しても溶解に時間がかかる為に水ｉ容凛
として添加する程の粉じん低減効果なく又、吹き付はノ
ズルが閉塞しゃずいという問題があり、粉末型の高性能
粉じん低減剤の出現が要望されていた。Although this method has a very large dust reduction effect, it requires a special metering device to suck up the highly viscous aqueous solution, and spraying is complicated due to the large number of piping near the nozzle, reducing economic efficiency and workability. do. In addition, there was a problem that there were many troubles with the metering water tank, and maintenance and management was time-consuming. On the other hand, water-soluble polymers can be mixed in powder form with aggregate before adding cement, mixed with bone and cement after preparing a dry mixture, or mixed with powdered cement quick-setting agent. No matter which method you use, such as adding it together with an accelerating agent, it takes time to dissolve, so it is not as effective in reducing dust as adding it as water, and the problem is that the nozzle gets clogged when spraying. Therefore, there was a demand for a powder type high-performance dust reducing agent.
（発明の目的）
本発明は上記の問題点に鑑みてなされたもので、セメン
ト混合物に粉末のまま添加しても吹き付は時における粉
じんの発生を極めて少なくすることができ、且つ吹き付
はノズルの閉塞がなく、セメントの強度低下がない粉末
型の粉じん低減剤を提供するものである。(Object of the Invention) The present invention has been made in view of the above problems, and even if it is added to a cement mixture as a powder, the generation of dust during spraying can be extremely reduced. To provide a powder type dust reducing agent that does not cause nozzle clogging and does not reduce the strength of cement.
（発明の構成）
本発明は
（イ）ポリエチレンオキサイド ３０〜 ７０重量部
（ロ）ポリカルボン酸型高分子界面活性剤 ７０〜３０
重量部
からなる粉じん低減剤に関するものである。(Structure of the Invention) The present invention consists of (a) polyethylene oxide 30 to 70 parts by weight (b) polycarboxylic acid type polymeric surfactant 70 to 30 parts by weight
Parts by weight of the dust reducing agent.
本発明で用いるポリエチレンオキサイドは分子量が３０
万〜６００万のものが好ましい。これ以下の分子量であ
ると溶解速度は大きいものの粉じん低減効果が小さく、
分子量が大き過ぎると溶解速度が小さい遅い為に実際的
に扮じん低減効果が小さい。ポリエチレンオキサイドの
使用量はセメントに対して０．０１重量％程度から効果
があるが、多く添加しても不経済となるばかりでなくセ
メントの強度を低下させるので０．０２重量％〜０．５
ｆｆｉｆｉ１％程度とするのがよい。本発明で用いるポ
リカルボン酸型高分子界面゛活性剤はエチレン、プロピ
レン、イソブチレン、ペンテン、スチレンなどのビニル
単量体とマレイン酸、イタコン酸、フマル酸及びこれら
の酸無水物などのα、β−不飽和シカルボン酸や酸無水
物とを共重合して得ることができる。分子量は５００〜
５万のものが用いられ、セメントに対して０．０１ｉｉ
ｆｆｉ％〜０゜５重量％程度添加される。ポリエチレン
オキサイドとポリカルボン酸型高分子界面活性剤の添加
割合は３０／７０〜７０／３０重量部が好ましい。The polyethylene oxide used in the present invention has a molecular weight of 30
The number is preferably from 10,000 to 6,000,000. If the molecular weight is lower than this, the dissolution rate is high but the dust reduction effect is small.
If the molecular weight is too large, the dissolution rate is low and slow, so the effect of reducing dust particles is actually small. The amount of polyethylene oxide used is effective from about 0.01% by weight based on cement, but adding too much is not only uneconomical but also reduces the strength of cement, so 0.02% to 0.5% by weight.
It is preferable to set ffifi to about 1%. The polycarboxylic acid type polymeric surfactant used in the present invention is a combination of vinyl monomers such as ethylene, propylene, isobutylene, pentene, and styrene, and alpha and beta acids such as maleic acid, itaconic acid, fumaric acid, and their acid anhydrides. - It can be obtained by copolymerizing unsaturated dicarboxylic acids and acid anhydrides. Molecular weight is 500~
50,000 is used, and 0.01ii for cement
It is added in an amount of about ffi% to 0.5% by weight. The addition ratio of polyethylene oxide and polycarboxylic acid type polymeric surfactant is preferably 30/70 to 70/30 parts by weight.
この範囲よりも小さいと粉じん低減効果が小さく、この
範囲よりも大きいと粉じん低減効果が小さいばかりでな
く吹き付はノズルが閉塞しやすい。When it is smaller than this range, the dust reduction effect is small, and when it is larger than this range, not only the dust reduction effect is small, but also the nozzle tends to be clogged when spraying.
本発明の粉じん低減剤はコンクリートあるいはモルタル
の吹き付は工法に際し、粉末のまま骨材とあらかじめ混
合してからセメントを加える方法、骨材とセメントの空
練り混合物を調整してから添加する方法、粉末のセメン
ト急結剤と混合してから急結剤と共に添加する方法など
いずれの方法で添加してもよい。もちろん、あらかじめ
水に溶解してから添加することもてきる。When spraying concrete or mortar, the dust reducing agent of the present invention may be mixed with aggregate in powder form before adding cement, or may be added after adjusting a dry mixture of aggregate and cement. It may be added by any method such as mixing with a powdered cement quick-setting agent and then adding it together with the quick-setting agent. Of course, it can also be added after being dissolved in water.
次ぎに実施例をあげて本発明を更に詳細に説明する。Next, the present invention will be explained in more detail with reference to Examples.
実施例１゜
セメン） １００重量部、川砂３００重量部に分子１１
４００万のポリエチレンオキサイドとポリカルボン酸型
高分子界面活性剤（花王デモールＥＰパウダー）を第１
表の割合でミキサーを用いて５分間混合した。吹きはけ
直前に粉末急結剤５重量部を添加し、ノズル先端で水を
水／セメント比が５５％になるように添加して吹き１：
Ｊけた。セメント５００重量部当たりの発生粉じん量と
吹き１］（ノノズルの閉塞の有無を測定した。Example 1゜Cement) 100 parts by weight, 300 parts by weight of river sand, molecule 11
4 million polyethylene oxide and polycarboxylic acid type polymeric surfactant (Kao Demol EP powder)
Mixing was performed for 5 minutes using a mixer at the ratio shown in the table. Immediately before blowing, add 5 parts by weight of powder quick setting agent, add water at the nozzle tip so that the water/cement ratio is 55%, and blow 1:
J Keta. Amount of dust generated per 500 parts by weight of cement and blowing 1] (The presence or absence of clogging of the nozzle was measured.
第 ｌ ° 表 ＊６はネ０リエチしジオ失サイドの水溶液を添加した。Chapter l Table For *6, an aqueous solution of geodehydration was added.
ポリエチレンオキサイドとポリカルボン酸型高分子界面
活性剤を併用するとｔ目乗効果により著しく扮じん低減
効果があることがわかる。叉、吹き付はノズルの閉塞も
なく、作業性が良好である。It can be seen that when polyethylene oxide and a polycarboxylic acid type polymeric surfactant are used together, there is a remarkable effect of reducing dust due to the t square effect. Moreover, there is no clogging of the nozzle during spraying, and the workability is good.
実施例２゜
第２表の分子量を有するポリエチレンオキサイド０．１
％（対セメント重辺％）とポリカルボン酸型高分子界面
活性剤（花王デモールＥＰパウダー）０．１％（対セメ
ント重１％）を使用した以外は実施例１と同様にして１
テっだ。セメント５００重量部当たりの発生粉じん量を
測定した。Example 2゜Polyethylene oxide having the molecular weight shown in Table 2 0.1
% (based on cement weight) and polycarboxylic acid type polymeric surfactant (Kao Demol EP powder) 0.1% (based on cement weight 1%) was used in the same manner as in Example 1.
It's te. The amount of dust generated per 500 parts by weight of cement was measured.
第 ２ 表
ポリエチレンオキサイドの分子量がｌＯ万径程度ら粉じ
ん低減効果が認められ、分子量が大きい程効果があるも
のの大き過ぎるとかえって効果が減少する。Table 2 A dust reduction effect is observed when the molecular weight of polyethylene oxide is around 10,000 diameters, and although the larger the molecular weight is, the more effective it is, if it is too large, the effect actually decreases.
実施例３゜
分子ｆｆ１３０万を有するポリエチレンオキサイド０．
１％（対セメント重量％）と第３表の界面活性剤０．１
％（対セメント重量％）を使用した以外は実権例と同様
にしておこなった。セメント５００重量部当たりの発生
扮しん里と吹き付はモルタルの圧縮強度を測定した。Example 3 Polyethylene oxide with a molecule ff of 1.3 million 0.
1% (wt% of cement) and 0.1 of the surfactant in Table 3
% (% by weight of cement) was used in the same manner as in the actual example. The compressive strength of the mortar was measured by the amount of heat generated per 500 parts by weight of cement.
実験ＮＯ１２が本発明例で、扮しん低減効果か大きく又
、強度低下もない。曲は比！２１５１で、例えは実験Ｎ
０１４．１５の例は扮じん効果は認められるものの強度
低下が大きい。 実験Ｎ０２Ｇ、２７゜２８の例はセメ
ント減水剤として公知の界面活性剤を用いたもので、強
度低下はほとんどないものの粉じん低減効果がない。Experiment No. 12 is an example of the present invention, which has a large effect of reducing friction and has no decrease in strength. The song is ratio! 2151, the example is experiment N.
In the example of No. 014.15, the dust effect was observed, but the strength was greatly reduced. Experiment No. 02G, 27° 28 uses a surfactant known as a cement water reducing agent, and although there is almost no decrease in strength, there is no dust reduction effect.
第 ３ 表
実施例４゜
第４表の水溶性高分子０．１％（対セメント重量％）と
ポリカルボン酸型高分子界面活性剤（日本ゼオン製ワー
ク５００を水／エタノールで再沈精製し、真空乾燥した
もの）０．１％（対セメント重量％）を使用した以外は
実施例１と同様にして行った。セメント５００重量部当
たりの発生粉じん量を測定した。Table 3 Example 4 0.1% of the water-soluble polymer shown in Table 4 (wt% of cement) and polycarboxylic acid type polymer surfactant (Nippon Zeon Work 500 were reprecipitated and purified with water/ethanol. The same procedure as in Example 1 was carried out except that 0.1% (based on the weight of the cement) was used. The amount of dust generated per 500 parts by weight of cement was measured.
実験Ｎ０２つが本発明例で、粉じん低減効果か大きい。Experiment No. 2 is an example of the present invention, and the dust reduction effect is large.
曲は比較例で、扮じん低）賎効果がほとんどない。The song is a comparative example and has almost no effect.
（発明の効果）
本発明によれは、粉末のまま吹き付は工法の吹き付は材
料にわずか二の扮しん低酸剤を；ｎ加するのみて吹き付
は時の粉じんを低下させろことがてきるのて経済的であ
る。又、特殊なポンプ、配管を必要としないので作業性
を全く損なうことがない。しかも、吹き付はノズルを閉
塞することなく吹き付は作業をすることができ、吹き付
はセメンＩ・の強度低下がない。(Effects of the Invention) According to the present invention, it is possible to reduce the amount of dust during spraying by adding only two or more low-acid agents to the material. It is very economical. Further, since no special pump or piping is required, workability is not impaired at all. Moreover, the spraying process can be performed without clogging the nozzle, and the spraying process does not reduce the strength of Cement I.
Claims (1)
量部 からなる粉じん低減剤[Claims] (a) A dust reducing agent consisting of 30 to 70 parts by weight of polyethylene oxide (b) 70 to 30 parts by weight of a polycarboxylic acid type polymeric surfactant
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13223487A JPS63297255A (en) | 1987-05-28 | 1987-05-28 | Dust-suppressing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13223487A JPS63297255A (en) | 1987-05-28 | 1987-05-28 | Dust-suppressing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63297255A true JPS63297255A (en) | 1988-12-05 |
Family
ID=15076503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13223487A Pending JPS63297255A (en) | 1987-05-28 | 1987-05-28 | Dust-suppressing agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63297255A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494516A (en) * | 1992-07-22 | 1996-02-27 | Sandoz Ltd. | Workable cementitious compositions |
| JP2000302503A (en) * | 1999-02-10 | 2000-10-31 | Denki Kagaku Kogyo Kk | Quick-setting agent, quick setting agent slurry, spraying material and spraying construction method using the same |
| JP2000302505A (en) * | 1999-02-19 | 2000-10-31 | Denki Kagaku Kogyo Kk | Accelerator, accelerator slurry, spraying material and method of spraying using the same |
| JP2000302504A (en) * | 1999-02-18 | 2000-10-31 | Denki Kagaku Kogyo Kk | Accelerator, accelerator slurry, spraying material and method of spraying using the same |
| JP2001294465A (en) * | 2000-04-10 | 2001-10-23 | Denki Kagaku Kogyo Kk | Rebound reducing agent, spraying material and spaying method using it |
| JP2001294464A (en) * | 2000-04-10 | 2001-10-23 | Denki Kagaku Kogyo Kk | Rebound reducing agent, spraying material and spaying method using it |
| JP2002053357A (en) * | 2000-08-10 | 2002-02-19 | Denki Kagaku Kogyo Kk | Quick setting agent, spraying material and spraying method using the same quick setting agent |
| JP2009078934A (en) * | 2007-09-25 | 2009-04-16 | Denki Kagaku Kogyo Kk | Quick setting cement concrete, and spraying method |
| WO2010060659A1 (en) * | 2008-11-25 | 2010-06-03 | Construction Research & Technology Gmbh | Use of polyols and cyclohexane polycarboxylic acid derivatives for the removal of dust from chemical construction products |
| CN104190373A (en) * | 2014-09-15 | 2014-12-10 | 天津霍斯特抑尘科技有限公司 | Ground dust inhibiting sweeping material and preparing method thereof |
-
1987
- 1987-05-28 JP JP13223487A patent/JPS63297255A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4324334B4 (en) * | 1992-07-22 | 2006-01-12 | Construction Research & Technology Gmbh | A method for abruptly reducing the flowability of a pumpable cement-containing mixture |
| AU674866B2 (en) * | 1992-07-22 | 1997-01-16 | Construction Research & Technology Gmbh | Workable cementitious compositions |
| US5494516A (en) * | 1992-07-22 | 1996-02-27 | Sandoz Ltd. | Workable cementitious compositions |
| JP2000302503A (en) * | 1999-02-10 | 2000-10-31 | Denki Kagaku Kogyo Kk | Quick-setting agent, quick setting agent slurry, spraying material and spraying construction method using the same |
| JP4493780B2 (en) * | 1999-02-10 | 2010-06-30 | 電気化学工業株式会社 | Quick setting agent, quick setting agent slurry, spray material and spraying method using the same |
| JP2000302504A (en) * | 1999-02-18 | 2000-10-31 | Denki Kagaku Kogyo Kk | Accelerator, accelerator slurry, spraying material and method of spraying using the same |
| JP4493781B2 (en) * | 1999-02-18 | 2010-06-30 | 電気化学工業株式会社 | Quick setting agent, quick setting agent slurry, spray material and spraying method using the same |
| JP2000302505A (en) * | 1999-02-19 | 2000-10-31 | Denki Kagaku Kogyo Kk | Accelerator, accelerator slurry, spraying material and method of spraying using the same |
| JP4493782B2 (en) * | 1999-02-19 | 2010-06-30 | 電気化学工業株式会社 | Quick setting agent, quick setting agent slurry, spray material and spraying method using the same |
| JP4508350B2 (en) * | 2000-04-10 | 2010-07-21 | 電気化学工業株式会社 | Spraying material and spraying method using the same |
| JP2001294465A (en) * | 2000-04-10 | 2001-10-23 | Denki Kagaku Kogyo Kk | Rebound reducing agent, spraying material and spaying method using it |
| JP4508351B2 (en) * | 2000-04-10 | 2010-07-21 | 電気化学工業株式会社 | Spraying material and spraying method using the same |
| JP2001294464A (en) * | 2000-04-10 | 2001-10-23 | Denki Kagaku Kogyo Kk | Rebound reducing agent, spraying material and spaying method using it |
| JP2002053357A (en) * | 2000-08-10 | 2002-02-19 | Denki Kagaku Kogyo Kk | Quick setting agent, spraying material and spraying method using the same quick setting agent |
| JP4657428B2 (en) * | 2000-08-10 | 2011-03-23 | 電気化学工業株式会社 | Quick setting agent, spraying material and spraying method using the same |
| JP2009078934A (en) * | 2007-09-25 | 2009-04-16 | Denki Kagaku Kogyo Kk | Quick setting cement concrete, and spraying method |
| WO2010060659A1 (en) * | 2008-11-25 | 2010-06-03 | Construction Research & Technology Gmbh | Use of polyols and cyclohexane polycarboxylic acid derivatives for the removal of dust from chemical construction products |
| US8454744B2 (en) | 2008-11-25 | 2013-06-04 | Construction Research & Technology Gmbh | Use of polyols and cyclohexane polycarboxylic acid derivatives for the removal of dust from chemical construction products |
| CN104190373A (en) * | 2014-09-15 | 2014-12-10 | 天津霍斯特抑尘科技有限公司 | Ground dust inhibiting sweeping material and preparing method thereof |
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