JPH0297443A - Method for preventing weathering of hydraulic calcium aluminate - Google Patents
Method for preventing weathering of hydraulic calcium aluminateInfo
- Publication number
- JPH0297443A JPH0297443A JP24914588A JP24914588A JPH0297443A JP H0297443 A JPH0297443 A JP H0297443A JP 24914588 A JP24914588 A JP 24914588A JP 24914588 A JP24914588 A JP 24914588A JP H0297443 A JPH0297443 A JP H0297443A
- Authority
- JP
- Japan
- Prior art keywords
- calcium aluminate
- hydraulic
- hydraulic calcium
- weathering
- fatty acids
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 13
- 239000000194 fatty acid Substances 0.000 claims abstract description 13
- 229930195729 fatty acid Natural products 0.000 claims abstract description 13
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 11
- 239000011819 refractory material Substances 0.000 abstract description 4
- 239000011575 calcium Substances 0.000 abstract description 3
- 229910052791 calcium Inorganic materials 0.000 abstract description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052602 gypsum Inorganic materials 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- -1 calcium aluminates Chemical class 0.000 description 5
- 229910001570 bauxite Inorganic materials 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は水硬性カルシウムアルミネートの風化防止方法
に関し、更に詳しくは、セメント系不定形キャスタブル
、コンクリート及び混和材等に使用される水硬性カルシ
ウムアルミネートの風化防止方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for preventing weathering of hydraulic calcium aluminate, and more particularly, to a method for preventing weathering of hydraulic calcium aluminate, and more specifically, it relates to a method for preventing weathering of hydraulic calcium aluminate. Concerning a method for preventing weathering of aluminate.
セメントは貯蔵中に空気とふれると、湿分を吸い軽微な
水利反応を起し、同時に空中のＣＯ２を吸収する。これ
は水和生成物と反応して、強熱減量を増し、比ｌも小さ
くなり、凝結もおそくなり、強さの発現性もしだいに低
下する。これがセメントの風化である。When cement comes into contact with air during storage, it absorbs moisture and causes a slight water use reaction, and at the same time absorbs CO2 from the air. This reacts with the hydration product, increasing the loss on ignition, decreasing the ratio, slowing down the setting, and gradually decreasing the strength development. This is the weathering of cement.
このセメントの風化を防止する方法として種々検討され
てきたが、貯蔵場所の通風を少なくするなど設備的な防
止方法が主で、艮好な風化防止材が望まれていた。（コ
ンクリート工学ハンドブック、勅書書店発行等）
一方、カルシウムアルミネートの中でも水硬性カルシウ
ムアルミネートは、水利活性が強く極微量の水分により
水和反応を起こし、更には、炭酸ガスの吸着や炭酸化に
より、一般に「風邪ひき」あるいは「風化」と呼ばれる
水利活性の低下音生じ易いという課題を持っている。Various methods have been studied to prevent cement from weathering, but the main methods have been equipment-based methods, such as reducing ventilation in the storage area, and there has been a desire for an effective weathering prevention material. (Concrete Engineering Handbook, published by Choku Shoten, etc.) On the other hand, among calcium aluminates, hydraulic calcium aluminate has strong water use activity, causing a hydration reaction with extremely small amounts of water, and also adsorbing carbon dioxide gas and carbonation. As a result, there is a problem in that water use activity tends to decrease, which is generally referred to as ``cold catching'' or ``weathering''.
特に空気中の水分や炭酸ガスに接触させておくと、時間
変化に伴い強熱減量が著しく増加し、硬化遅れや強度低
下等の原因になっていた。In particular, if it is brought into contact with moisture or carbon dioxide gas in the air, the ignition loss increases significantly over time, causing a delay in curing and a decrease in strength.
中でも水硬性カルシウムアルミネートと耐火材料とｔプ
レミックスした不定形キャスタブルは、耐火材料に吸着
している水分やエアー中の水分、更には、炭酸ガスによ
り風化し、長期間貯蔵した製品は著しく硬化遅延しｆｃ
り、逆に急硬化したシするため、使用できなかった。こ
の風化の悪影響は、セメント添加量の少ない、低セメン
トキャスタブルあるいは高強度キャスタデルと呼ばれる
、不定形キャスタデルにおいて顕著に見られた。Among them, monolithic castables made of a premix of hydraulic calcium aluminate and refractory materials are weathered by moisture adsorbed to the refractory material, moisture in the air, and even carbon dioxide, and products stored for a long period of time will harden significantly. delayed fc
On the contrary, it could not be used because it hardened rapidly. This adverse effect of weathering was most noticeable in irregularly shaped castadels, which contain a small amount of cement and are called low-cement castables or high-strength castadels.
これまで水硬性カルシウムアルミネートの風化防止策と
して、塩化ビニリデン等の袋にバックし突気と遮断する
方法や、耐火材料等とのプレミックス品においては水硬
性カルシウムアルミネートと耐火材料とを個別に袋詰め
する方法等が取られていたがその効果は十分でなかった
。Until now, as a measure to prevent hydraulic calcium aluminate from weathering, methods such as bagging it in a vinylidene chloride bag to block it from sudden air flow, and methods for pre-mixing products with fireproof materials, etc., have been used to separate hydraulic calcium aluminate and fireproof materials. Methods such as packaging the product in bags have been used, but the effect was not sufficient.
本発明者は上記課題を解消すべく鋭意検討した結果、特
定の方法を用いることにより、水硬性カルシウムアルミ
ネートの風化を防止できる知見を得て本発明を完成する
に至った。As a result of intensive studies to solve the above problems, the inventors of the present invention have completed the present invention based on the knowledge that weathering of hydraulic calcium aluminate can be prevented by using a specific method.
即ち、本発明は、水硬性カルシウムアルミネートに脂肪
酸類を添加することを特徴とする水硬性カルシウムアル
ミネートの風化防止方法である。That is, the present invention is a method for preventing weathering of hydraulic calcium aluminate, which is characterized by adding fatty acids to hydraulic calcium aluminate.
以下本発明の内容を詳しく説明する。The contents of the present invention will be explained in detail below.
本発明にがかる水硬性カルシウムアルミネート４（以下
水硬性ＣＡという）水硬性てあって、ボーキサイトやバ
イヤーアルミナ等のアルミナ源、生石灰や石灰石等のカ
ルシア源全使用し焼成法及び／又は電融法によって合成
したクリンカーをボールミル、ローラーミル及びオング
ミル等の粉砕機で粉砕したものである。水硬性ＣＡの鉱
物組成はＣａＯｆ Ｃ、Ａｚ２ｏ、、 ２ Ａとすると
、Ｃ３Ａ 、 Ｃ５Ａ３、Ｃｌ２Ａ７、ＣＡ％Ｃ３Ａ
、及びＣＡ２等で示されるものであって、具体的にはア
ルミナセメントがあげられる。Hydraulic calcium aluminate 4 (hereinafter referred to as hydraulic CA) according to the present invention is hydraulic and uses all alumina sources such as bauxite and Bayer alumina, and calcia sources such as quicklime and limestone, and is produced by a calcination method and/or an electrofusion method. The clinker synthesized by the method is pulverized using a pulverizer such as a ball mill, a roller mill, or an ong mill. The mineral composition of hydraulic CA is CaOf C, Az2o, 2A, then C3A, C5A3, Cl2A7, CA%C3A
, and CA2, and specific examples include alumina cement.
本発明にかかる脂肪酸類は、各種脂肪酸及び／又はその
塩であジ、脂肪酸とは、アルキル基ヲＲとするとＲＣＯ
ＯＨで表わされるものであって、飽和脂肪酸、不飽和脂
肪酸どちらでも艮い。具体的には、オレイン酸、ステア
リン酸及びパルミチン酸等であって、ステアリン酸が特
に好ましい。The fatty acids according to the present invention include various fatty acids and/or salts thereof.
It is expressed as OH, and can be either a saturated fatty acid or an unsaturated fatty acid. Specifically, oleic acid, stearic acid, palmitic acid, etc. are used, and stearic acid is particularly preferred.
又、本発明にかかる脂肪酸塩は、アルカリ金属？ｌ１−
ＸとするとＲＣ’ＯＯＸで表わされるものなどであって
、各々のナトリウム塩、カリウム塩及びカルシウム塩等
が好ましい。脂肪酸類のうちステアリン酸アルカリ金属
塩が特に好ましい。Also, is the fatty acid salt according to the present invention an alkali metal? l1-
When X is represented by RC'OOX, the respective sodium salts, potassium salts, calcium salts, etc. are preferable. Among fatty acids, alkali metal stearates are particularly preferred.
脂肪酸類の添加方法は、水硬性ＣＡのクリンカーの粉砕
時に混合粉砕しても、粉砕した粉末状の水硬性ＣＡと混
合しても良いが、クリンカー粉砕時に混合する方法が風
化防止効果の面から好ましい。The fatty acids can be added by mixing and pulverizing the clinker of hydraulic CA, or by mixing it with the pulverized powdered hydraulic CA, but from the viewpoint of weathering prevention effect, it is preferable to add fatty acids when pulverizing the clinker. preferable.
脂肪酸類の使用量は水硬性ＣＡ１００重量部に対し、ｏ
、ｏ ｏ ｉ〜６重量部の範囲であることが好ましく、
０．０１〜０．５重量部がより好ましい。The amount of fatty acids used is o based on 100 parts by weight of hydraulic CA.
, preferably in the range of o o i to 6 parts by weight,
More preferably 0.01 to 0.5 parts by weight.
ｏ、ｏ ｏ ｉ重量部未満ではその効果に乏しく、６重
量部會越えるとカルシウムアルミネートの水利が著しく
遅れるため好ましくない。If the amount is less than 1 part by weight, the effect will be poor, and if it exceeds 6 parts by weight, water utilization of calcium aluminate will be significantly delayed, which is not preferable.
本発明の方法により製造した水硬性ＣＡは耐風化性が向
上するため、各種耐火材や、石賞及びカルシウムサルホ
アルミネート（Ｃ８Ａ）等の混和材とデレミキシ／グし
た状態で長期間貯蔵可能になる。Since the hydraulic CA produced by the method of the present invention has improved weathering resistance, it can be stored for a long period of time when mixed with various refractory materials and admixtures such as stone and calcium sulfoaluminate (C8A). Become.
特に、吸湿性の犬さいシリカヒユーム等の超微粉と分散
剤の入った低セメントキャスタデルや水硬性ＣＡの急硬
性を利用した気泡コンクリート等の混和材に有効である
。It is particularly effective for admixtures such as low cement castadel containing ultrafine powder such as hygroscopic silica hume and a dispersant, and aerated concrete that utilizes the rapid hardening properties of hydraulic CA.
以下実施例により本発明を更に詳しく説明する。 The present invention will be explained in more detail with reference to Examples below.
実施例１
ボーキサイト１００重量部、生石灰６０軍量部を配合し
、電気炉で１，６５０°Ｃにて１時間溶融した。その溶
融物のタッピング時に、エアー圧１０ｋｌｉｌ ／ ｃ
ｍ”にて吹き飛ばし、表−１に示す水硬性ＣＡクリンカ
ー？製造した。Example 1 100 parts by weight of bauxite and 60 parts by weight of quicklime were blended and melted in an electric furnace at 1,650°C for 1 hour. When tapping the melt, air pressure 10klil/c
m'' to produce hydraulic CA clinker shown in Table 1.
上記クリンカーと表−２に示す脂肪酸類を所定量チュー
ブミルにて混合粉砕して、ブレーン法による比表面積で
４，８００ｍ２／ １１の水硬性ＣＡを得た。A predetermined amount of the above clinker and the fatty acids shown in Table 2 were mixed and pulverized in a tube mill to obtain a hydraulic CA having a specific surface area of 4,800 m2/11 by the Blaine method.
この水硬性ＣＡを２０９Ｃ１８０％Ｒ，Ｈ，の雰囲気中
に放置し所定時間経過した時の強熱減ｉ（以下Ｉｇ％ｔ
ｏｓｓという）の増加と水利発熱時間を測定した。結果
を表−２に併記する。面、測定は次の方法で行った。This hydraulic CA is left in an atmosphere of 209C180%R,H, and the ignition loss i (hereinafter referred to as Ig%t
oss) and the water use heat generation time were measured. The results are also listed in Table-2. The measurements were carried out using the following method.
（１１Ｉｇ％ｔｏｓｓ ：所定時間経過し次試料をｉ、
ｉｏｏ℃で恒量になるまで焼成し、未放置
品との熱減量の差とした。(11Ig%toss: After a predetermined period of time, the next sample is
The product was fired at 100°C until it reached a constant weight, and the difference in heat loss between the product and the unused product was determined.
（２）水利発熱： ＪＩＳ Ｒ２５２１記載のモルタル
の水利発熱曲線を温度記録計にて記
録し、注水から発熱ピークまでに
要した時間とした。(2) Water use heat generation: The water use heat generation curve of the mortar described in JIS R2521 was recorded with a temperature recorder, and the time required from water injection to the heat generation peak was taken as the time.
〈使用材料〉
ボーキサイト：ガイアナ産白ボーキサイト生 石 灰
二日本石灰工業社製生石灰脂肪酸類Ａ ニステアリン酸
ナトリウム、関東化学社製試薬１級
ニステアリン酸、
ニオレイン酸、
〃
：バルミチン酸、
ニステアリン酸カリウム、
〔発明の効果〕
以上から明らかなように、
本発明の方法を用い
ると水硬性Ｃ
Ａの風化が防止でき貯蔵安定性が向
上する。<Materials used> Bauxite: White bauxite raw lime from Guyana
Quicklime fatty acids A manufactured by Nippon Lime Industry Co., Ltd. Sodium nistearate, reagent manufactured by Kanto Kagaku Co., Ltd. Primary nistearic acid, nioleic acid, Valmitic acid, Potassium nistearate, [Effects of the invention] As is clear from the above. By using the method of the present invention, weathering of hydraulic CA can be prevented and storage stability can be improved.
Claims (1)
することを特徴とする水硬性カルシウムアルミネートの
風化防止方法。(1) A method for preventing weathering of hydraulic calcium aluminate, which comprises adding fatty acids to hydraulic calcium aluminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63249145A JP2779177B2 (en) | 1988-10-04 | 1988-10-04 | Method for preventing weathering of hydraulic calcium aluminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63249145A JP2779177B2 (en) | 1988-10-04 | 1988-10-04 | Method for preventing weathering of hydraulic calcium aluminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0297443A true JPH0297443A (en) | 1990-04-10 |
| JP2779177B2 JP2779177B2 (en) | 1998-07-23 |
Family
ID=17188590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63249145A Expired - Fee Related JP2779177B2 (en) | 1988-10-04 | 1988-10-04 | Method for preventing weathering of hydraulic calcium aluminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779177B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002003251A (en) * | 2000-06-16 | 2002-01-09 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP2002053356A (en) * | 2000-08-03 | 2002-02-19 | Denki Kagaku Kogyo Kk | Quick setting agent for cement |
| JP2002167253A (en) * | 2000-11-30 | 2002-06-11 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP2002284555A (en) * | 2001-03-27 | 2002-10-03 | Sumitomo Osaka Cement Co Ltd | Cement setting accelerator and method for manufacturing solidified concrete product |
| JP2006306647A (en) * | 2005-04-27 | 2006-11-09 | Denki Kagaku Kogyo Kk | Alumina cement composition and repairing method using the same |
| JP2009263164A (en) * | 2008-04-25 | 2009-11-12 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition for mass concrete |
| JP2014205592A (en) * | 2013-04-12 | 2014-10-30 | 太平洋マテリアル株式会社 | Accelerator |
| CN107709267A (en) * | 2015-06-26 | 2018-02-16 | 电化株式会社 | Fast hard material, its manufacture method and the fast hydraulic cement composition using the fast hard material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49120922A (en) * | 1973-03-12 | 1974-11-19 |
-
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- 1988-10-04 JP JP63249145A patent/JP2779177B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49120922A (en) * | 1973-03-12 | 1974-11-19 |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002003251A (en) * | 2000-06-16 | 2002-01-09 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP4571274B2 (en) * | 2000-06-16 | 2010-10-27 | 電気化学工業株式会社 | Cement admixture and cement composition |
| JP4498560B2 (en) * | 2000-08-03 | 2010-07-07 | 電気化学工業株式会社 | Cement quick-setting agent |
| JP2002053356A (en) * | 2000-08-03 | 2002-02-19 | Denki Kagaku Kogyo Kk | Quick setting agent for cement |
| JP2002167253A (en) * | 2000-11-30 | 2002-06-11 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP2002284555A (en) * | 2001-03-27 | 2002-10-03 | Sumitomo Osaka Cement Co Ltd | Cement setting accelerator and method for manufacturing solidified concrete product |
| JP4636718B2 (en) * | 2001-03-27 | 2011-02-23 | 住友大阪セメント株式会社 | Method for producing hardened concrete |
| JP2006306647A (en) * | 2005-04-27 | 2006-11-09 | Denki Kagaku Kogyo Kk | Alumina cement composition and repairing method using the same |
| JP2009263164A (en) * | 2008-04-25 | 2009-11-12 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition for mass concrete |
| JP2014205592A (en) * | 2013-04-12 | 2014-10-30 | 太平洋マテリアル株式会社 | Accelerator |
| CN107709267A (en) * | 2015-06-26 | 2018-02-16 | 电化株式会社 | Fast hard material, its manufacture method and the fast hydraulic cement composition using the fast hard material |
| JPWO2016208277A1 (en) * | 2015-06-26 | 2018-04-12 | デンカ株式会社 | QUICK HARDENING MATERIAL, PROCESS FOR PRODUCING THE SAME, AND HARDENING CEMENT COMPOSITION USING SAME |
| EP3315472A4 (en) * | 2015-06-26 | 2019-03-13 | Denka Company Limited | Quick hardening material, method for producing it, and quick hardening cement composition using it |
| CN107709267B (en) * | 2015-06-26 | 2020-05-05 | 电化株式会社 | Quick-hardening material, method for producing same, and quick-hardening cement composition using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2779177B2 (en) | 1998-07-23 |
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