JPS591228B2 - Method for controlling the setting of hydraulic calcium aluminates - Google Patents
Method for controlling the setting of hydraulic calcium aluminatesInfo
- Publication number
- JPS591228B2 JPS591228B2 JP54077547A JP7754779A JPS591228B2 JP S591228 B2 JPS591228 B2 JP S591228B2 JP 54077547 A JP54077547 A JP 54077547A JP 7754779 A JP7754779 A JP 7754779A JP S591228 B2 JPS591228 B2 JP S591228B2
- Authority
- JP
- Japan
- Prior art keywords
- calcium aluminates
- calcium
- controlling
- portland cement
- added
- 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
- 239000011575 calcium Substances 0.000 title claims description 29
- 229910052791 calcium Inorganic materials 0.000 title claims description 27
- -1 calcium aluminates Chemical class 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 23
- 239000011398 Portland cement Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 8
- 239000000920 calcium hydroxide Substances 0.000 claims description 8
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 8
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 7
- 239000001110 calcium chloride Substances 0.000 claims description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 7
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims description 4
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 235000012255 calcium oxide Nutrition 0.000 claims description 4
- 150000001735 carboxylic acids Chemical class 0.000 claims description 4
- 150000001805 chlorine compounds Chemical class 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 150000004820 halides Chemical class 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- 235000015165 citric acid Nutrition 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 239000000174 gluconic acid Substances 0.000 claims description 2
- 235000012208 gluconic acid Nutrition 0.000 claims description 2
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims 3
- 238000005345 coagulation Methods 0.000 claims 3
- 229910002651 NO3 Inorganic materials 0.000 claims 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 2
- 239000003245 coal Substances 0.000 claims 1
- 125000005843 halogen group Chemical group 0.000 claims 1
- 239000004568 cement Substances 0.000 description 16
- 239000000203 mixture Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 101100323029 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) alc-1 gene Proteins 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 229910001634 calcium fluoride 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
- 238000010276 construction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
本発明はカルシウムアルミネートまたはカルシラムアル
ミネートを含むクリンカを主体とする水硬性組成物の凝
結調節方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the setting of a clinker-based hydraulic composition containing calcium aluminate or calcilum aluminate.
アルミナ質原料と石灰質原料またはアルミナ質原料、石
灰質原料、ケイ酸質原料およびハロゲン化物からなる調
合原料を焼成すると、種々の組成のアルミン酸カルシウ
ムまたはハロアルミン酸カルシウムの他に３ Ｃａ Ｏ
−Ｓ ｉ０２．２ＣａＯ０ＳｉＯ２゜４ＣａＯ，Ａｄ２
０３ 、Ｆｅ２Ｏ３などからなるクリンカが得られ、こ
れらの組成物は水利活性が大きく、かつ硬化性も犬なる
ために、数時間程度の早期強さの発現が大きいことは一
般に知られているが初期強さが低い欠点がある。When an alumina raw material and a calcareous raw material or a blended raw material consisting of an alumina raw material, a calcareous raw material, a siliceous raw material, and a halide are fired, in addition to calcium aluminate or calcium haloaluminate of various compositions, 3 Ca O
-S i02.2CaO0SiO2゜4CaO, Ad2
03, Fe2O3, etc., and it is generally known that these compositions have high water use activity and low hardening properties, so they exhibit a large early strength within a few hours. It has the disadvantage of low strength.
本発明者等はこれらの欠点を添加剤の添加により除去せ
んとして種々研究したところ、これらの組成物に安価で
入手容易なアルカリ金属またはアルカリ土類金属の塩化
物を添加し、水と混練りすると、殆んど瞬結性のアルミ
ン酸カルシウムまたはアルミン酸カルシウムを含むクリ
ンカ（以下刃ルシウムアルミネート類という）の場合は
凝結時・間が延長されると共に早期強度が発見されるこ
とを認めた。The present inventors conducted various studies in an attempt to eliminate these drawbacks by adding additives, and found that they added chlorides of alkali metals or alkaline earth metals, which are inexpensive and easily available, to these compositions and kneaded them with water. As a result, it was found that in the case of almost instant-setting calcium aluminate or clinker containing calcium aluminate (hereinafter referred to as lucium aluminates), the setting time was prolonged and early strength was found. .
さらにこのようにして造ったセメントに下記するような
種々の添加剤を添加すれば、凝結時間が一層調節され、
強度の犬なるセメントが得られることを知見した。Furthermore, by adding various additives as described below to the cement made in this way, the setting time can be further adjusted.
It was discovered that strong cement can be obtained.
次に種々行った実験のうち代表的な実験例を示す。Next, a representative example of various experiments conducted will be shown.
実験 １
第１表に示す如き化学成分のカルシウムアルミネートを
含むクリンカＡ１−煮３の３種のクリンカを使用した。Experiment 1 Three types of clinker, clinker A1 and boiled 3, containing calcium aluminate with chemical components as shown in Table 1 were used.
このクリンカの鉱物組成はＡｌＣ１□Ａ７．ＣａＦ２２
７％； １６．２ Ｃ３Ａ３ 、 ＣａＦ２８５％；お
よびＡ ３ Ｃ１１Ａ７−ＣａＦ２８２％である。The mineral composition of this clinker is AlC1□A7. CaF22
7%; 16.2 C3A3, CaF285%; and A3C11A7-CaF282%.
これらクリンカにセメント中の１２０３１モルに対し、
塩化カルシウムを第２表に示す如き種々のモル数加え、
さらにセメント１重量に対し砂２重量の割合に加え、水
／セメント比を６０％にして混練し、成形硬化せしめた
後脱型し、３時間後の圧縮強度を測定し、第２表および
第１図の如き結果を得た。These clinkers have 12,031 moles in cement.
Adding various moles of calcium chloride as shown in Table 2,
Furthermore, in addition to the ratio of 2 weights of sand to 1 weight of cement, the mixture was mixed with a water/cement ratio of 60%, molded and hardened, then demolded, and the compressive strength was measured after 3 hours. The results shown in Figure 1 were obtained.
この結果よりカルシウムアルミネートを含むクリンカお
よび消石灰を添加したアルミナセメントに塩化カルシウ
ムを添加すれば短時間に圧縮強度が犬になることが認め
られる。These results indicate that the compressive strength can be improved in a short time by adding calcium chloride to alumina cement containing clinker containing calcium aluminate and slaked lime.
実験 ２
次に実験１に示したＡ１のカルシウムアルミネートの他
に１２ＣａＯ−７Ａ１２０３を主成分とした次の如き組
成のカルシウムアルミネート
に塩化カルシウム、塩化ナトリウムおよび塩化マグネシ
ウム（倒れも無水物として）のうちの少くとも１種を加
え、さらにこの混合物に消石灰を添加または添加せずし
てセメントを造り、このセメント１重量部に対し砂２重
量部を加え、水／セメント比６０％で混練りし、成形し
て硬化せしめたところ第２表の如き結果を得た。Experiment 2 Next, in addition to the calcium aluminate of A1 shown in Experiment 1, calcium chloride, sodium chloride, and magnesium chloride (also treated as anhydrous) were added to calcium aluminate with the following composition containing 12CaO-7A1203 as the main component. At least one of these is added, and cement is made by adding or not adding slaked lime to this mixture, 2 parts by weight of sand is added to 1 part by weight of this cement, and the mixture is kneaded at a water/cement ratio of 60%. When molded and cured, the results shown in Table 2 were obtained.
この結果よりカルシウムアルミネートまたはカルシウム
アルミネートを含むタリンカに水溶性塩化物を添加すれ
ば凝結時間が長くなり、さらに消石灰を添加すれば凝結
時間が短く圧縮強度が犬になることが認められた。From these results, it was confirmed that adding water-soluble chloride to calcium aluminate or tarinka containing calcium aluminate increases the setting time, and further adding slaked lime shortens the setting time and improves the compressive strength.
実験 ３
さらに実験２における配合割合のセメントにさらにクエ
ン酸０．５部を添加し、実験２と同じ条件で水と混練り
し、凝結時間を測定し、第３表の結果を得た。Experiment 3 Further, 0.5 part of citric acid was added to the cement having the mixing ratio in Experiment 2, and the mixture was kneaded with water under the same conditions as Experiment 2. The setting time was measured, and the results shown in Table 3 were obtained.
この結果よりカルシウムアルミネートまたはカルシウム
アルミネートを含むクリンカにクエン酸を添加すれば凝
結時間を延長せしめることが出来ることが認められた。From this result, it was confirmed that the setting time could be extended by adding citric acid to calcium aluminate or clinker containing calcium aluminate.
なお上記クエン酸の代りにホウ酸、硝酸カルシウムまた
はポルトランドセメントクリンカを添加した場合上記と
同様に凝結時間を延長せしめることができた。When boric acid, calcium nitrate or Portland cement clinker was added instead of the citric acid, the setting time could be extended in the same way as above.
本発明はこれらの知見に基く方法であって、カルシウム
アルミネート類にアルカリ金属またはアルカリ土類金属
の塩化物またはこれら塩化物と共に生石灰または消石灰
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
ート類の凝結調節方法であり、また水硬性カルシウムア
ルミネート類の凝結を調節すると共に強度を増強せしめ
る方法、または凝結時間を延長せしめる方法である。The present invention is a method for producing hydraulic calcium aluminates based on these findings, which is characterized by adding an alkali metal or alkaline earth metal chloride or quicklime or slaked lime together with these chlorides to calcium aluminates. It is also a method of controlling the setting of hydraulic calcium aluminates and increasing the strength or extending the setting time.
本発明においてカルシウムアルミネート類とはアルミナ
質原料と石灰質原料またはこれら原料とケイ酸質原料お
よびハロゲン化物とを種々の割合で調合し、焼成して得
た水硬性組成物であって、例えば、１２Ｃａ０．７Ａ１
２０ｓ、３ＣａＯ，３Ａｄ２０３゜Ｃａ Ｆ２または１
１ＣａＯ，７Ａｄ□０３−ＣａＦ２などのカルシウムア
ルミネートであり、また１１ＣａＯ。In the present invention, calcium aluminates are hydraulic compositions obtained by mixing an alumina raw material, a calcareous raw material, or these raw materials, a silicic acid raw material, and a halide in various proportions and firing the mixture, for example, 12Ca0.7A1
20s, 3CaO, 3Ad203°Ca F2 or 1
Calcium aluminates such as 1CaO, 7Ad□03-CaF2, and 11CaO.
７ Ａ ｌ ２０ｇ −Ｃａ Ｆ２ を５〜６０重量％
、３ＣａＯ０Ｓ１０２を５重量％以上含むカルシウムハ
ロアルミネート含有の水硬性クリンカである。7 Al 20g -Ca F2 5-60% by weight
This is a hydraulic clinker containing calcium haloaluminate containing 5% by weight or more of 3CaO0S102.
またアルカリ金属またはアルカリ土類金属の塩化物とは
塩化カルシウム、塩化マグネシウム、塩化カリウム、塩
化ナトリウムなどであって、その添加量はカルシウムア
ルミネート類中のＡｌ２Ｏ３に対してモル比で０．１〜
８であり、８以上では凝結時間が長くなり、早期強度の
発見が悪くなるので好ましくない。In addition, chlorides of alkali metals or alkaline earth metals include calcium chloride, magnesium chloride, potassium chloride, sodium chloride, etc., and the amount added is from 0.1 to Al2O3 in the calcium aluminates in molar ratio.
8, and if it is 8 or more, the setting time becomes long and early strength detection becomes difficult, so it is not preferable.
本発明に使用する生石灰または消石灰はセメントの短期
圧縮強度を増加せしめる作用をなすものであって、その
添加量はカルシウムアルミネート類に対し１００重量部
以下が好ましく、１００重量部を越えるとハンドリング
が困難になることがある。The quicklime or slaked lime used in the present invention has the effect of increasing the short-term compressive strength of cement, and the amount added is preferably 100 parts by weight or less based on the calcium aluminate, and if it exceeds 100 parts by weight, handling becomes difficult. It can be difficult.
また有機カルボン酸（例えばクエン酸、酒石酸、グルコ
ン酸など）韮たはその塩、ホウ酸またはその塩、または
硝酸塩は倒れもセメントの凝結時間を延長せしめる作用
をなし、その添加量はカルシウムアルミネート類に対し
１０重量％以下が好ましく、１０重量％を越えると凝結
が遅くなり過ぎるので好ましくない。In addition, organic carboxylic acids (such as citric acid, tartaric acid, gluconic acid, etc.) or their salts, boric acid or its salts, or nitrates have the effect of prolonging the setting time of cement, and the amount of addition thereof is controlled by calcium aluminate. It is preferably 10% by weight or less based on the class, and if it exceeds 10% by weight, it is not preferable because setting is too slow.
さらにまたポルトランド系セメント（普通ポルトランド
セメント、早強ポルトランドセメント、超早強ポルトラ
ンドセメントなど）またはそのクリンカあるいは混合ポ
ルトランドセメントは何れもカルシウムアルミネート類
セメントの凝結を遅延する効果があるが、早期強度を低
下せしめる頌向かあり、その添加量はカルシウムアルミ
ネート類に対し５〜１００重量係が好ましく、１００重
量％を越えると硬化が極めて遅くなる。Furthermore, Portland cements (normal Portland cement, early strength Portland cement, ultra early strength Portland cement, etc.) or their clinkers or mixed Portland cements have the effect of retarding the setting of calcium aluminate cements, but the early strength The amount added is preferably 5 to 100% by weight relative to the calcium aluminate, and if it exceeds 100% by weight, curing becomes extremely slow.
本発明においてカルシウムアルミネート類に添加するア
ルカリ金属またはアルカリ土類金属の塩化物は直接カル
シウムアルミネート類に添加しても、またカルシウムア
ルミネート類を水と混練りする際に塩化物を溶液として
使用することもできる。In the present invention, the alkali metal or alkaline earth metal chloride added to the calcium aluminates can be added directly to the calcium aluminates, or the chloride can be added as a solution when the calcium aluminates are kneaded with water. You can also use
本発明は従来市販されているセメントと同様に粗骨材お
よび細骨材を加えてコンクリートとして使用することが
できる。The present invention can be used as concrete by adding coarse aggregate and fine aggregate in the same way as conventional commercially available cement.
たＸ゛本発明は可溶性の塩化物を含有しているので鉄筋
を腐蝕する欠点があるが、強度が犬であるので鉄筋を使
用しない道路工事などには充分使用することができる。Since the present invention contains soluble chloride, it has the disadvantage of corroding reinforcing bars, but since it has a certain level of strength, it can be used satisfactorily for road construction, etc., where reinforcing bars are not used.
そして本発明においては、従来有機化学工場より多量に
排出し、その処分に困っている塩酸を石灰等で中和した
ものを本発明に利用できるので、公害対策および省資源
の面からその利用価値は犬である。In addition, in the present invention, hydrochloric acid, which has been discharged in large quantities from conventional organic chemical factories and is difficult to dispose of, can be used in the present invention by neutralizing it with lime, etc., so its value in terms of pollution control and resource saving can be utilized. is a dog.
実施例 １
実験に使用した第１表のＡＩカルシウムアルミネートを
含むクリンカを使用し、このクリンカに消石灰、クエン
酸を第４表に示す割合に配合し、これに水５０重量部中
に塩化カルシウムを１５重量部含有する液を加え、混練
り後、ブロックに成形し、凝結時間および圧縮強度を測
定し、第５表の結果を得た。Example 1 Clinker containing AI calcium aluminate shown in Table 1 used in the experiment was used, slaked lime and citric acid were added to this clinker in the proportions shown in Table 4, and calcium chloride was added to 50 parts by weight of water. A solution containing 15 parts by weight of .
次に比較のため上記と同じカルシウムアルミネートを含
むクリンカ１００重量部を使用し、このクリンカに無水
石こう３０重量部、クエン酸０．３重量部および砂２０
０重量部を加えて混合し、これに水５０重量部を加えて
混練りし、上記と同形のブロックに成形し、凝結時間お
よび圧縮強度を測定し、第６表の結果を得た。Next, for comparison, 100 parts by weight of clinker containing the same calcium aluminate as above was used, and this clinker was mixed with 30 parts by weight of anhydrous gypsum, 0.3 parts by weight of citric acid, and 20 parts by weight of sand.
0 parts by weight were added and mixed, and 50 parts by weight of water were added and kneaded, molded into blocks of the same shape as above, and the setting time and compressive strength were measured, and the results shown in Table 6 were obtained.
上記第５表と第６表との結果を比較すれば、本発明の水
硬性カルシウムアルミネートより造ったセメントは公知
の水硬性カルシウムアルミネートより造ったセメントよ
りも凝結時間が短かく、初期強度が犬になることが認め
られた。Comparing the results in Tables 5 and 6 above, the cement made from the hydraulic calcium aluminate of the present invention has a shorter setting time and initial strength than the cement made from the known hydraulic calcium aluminate. was allowed to become a dog.
実施例 ２
ボーキサイトと石灰石とをＣａＯ： Ａ／２０ｓのモル
比が１２ニアになるように調合し、混合粉砕した後、こ
れを電気炉で１３５０℃で３時間焼成し、１２ＣａＯ，
７Ａ６□０．Ａ−主成分とした水硬性カルシウムアルミ
ネートを造り、粉砕してブレーン比表面積４３００ｃｒ
ｄ／ｇにした。Example 2 Bauxite and limestone were mixed so that the molar ratio of CaO:A/20s was 12nia, mixed and pulverized, and then calcined in an electric furnace at 1350°C for 3 hours to produce 12CaO,
7A6□0. A - Make hydraulic calcium aluminate as the main component and crush it to obtain Blaine specific surface area of 4300 cr.
It was set to d/g.
得られたカルシウムアルミネート１００重量部に対しク
エン酸０．５重量部、砂２００重量部を添加混合したも
のに水６０重量部中に塩化カルシウム７０重量部含有の
液を加え混線後成形し凝結時間および材Ａ？−３時間後
の圧縮強度を測定したところ、凝結時間の始発は１５分
、終結は２３分であって、圧縮強度は６１Ｋｙ／ｃｙｒ
ｊであった。To 100 parts by weight of the obtained calcium aluminate, 0.5 parts by weight of citric acid and 200 parts by weight of sand were added and mixed, and a solution containing 70 parts by weight of calcium chloride in 60 parts by weight of water was mixed, then molded and solidified. Time and material A? - When the compressive strength was measured after 3 hours, the initial setting time was 15 minutes and the final setting time was 23 minutes, and the compressive strength was 61 Ky/cyr.
It was j.
図面は本発明の実験１において得たＣａＣ７１１２／Ａ
１２Ｑモル比と圧縮強度との関係を示すものである。The drawing shows CaC7112/A obtained in Experiment 1 of the present invention.
It shows the relationship between 12Q molar ratio and compressive strength.
Claims (1)
イ酸質原料およびハロゲン化物とを種々の割合で調合、
粉砕、焼成して得た１２ＣａＯ・７Ａ１２０３．３Ｃａ
０・３Ａ７１！２０３・ＣａＸ２および１１Ｃａ０・７
Ａ１２０３・ＣａＸ２（但しＸはハロゲン原子を示す。 ）のうちの少くとも一種のカルシウムアルミネートまた
は１１Ｃａ０・７Ａ４２０３・ＣａＦ２５〜６０重量係
、３ＣａＯ−８ｉＯ２５重量係以上を含ムカルシウムハ
ロアルミネート含有の水硬性クリンカにアルカリ金属ま
たはアルカリ土類金属の塩化物を添加することを特徴と
するカルシウムアルミネート類の凝結調節方法。 ２ 前記アルカリ金属またはアルカリ土類金属の塩化物
として塩化カルシウム、塩化マグネシウム、塩化カリウ
ムおよび塩化ナトリウムのうちの少くとも一種類を、カ
ルシウムアルミネート類中のＡ １１２０３成分に対し
モル比で０．１〜８添加することを特徴とする特許請求
の範囲第１項記載のカルシウムアルミネート類の凝結調
節力も ３ 特許請求の範囲第１項において、カルシウムアルミ
ネート類と塩化物との混合物にさらに生石灰または消石
灰を添加することを特徴とするカルシウムアルミネート
類の凝結調節方法。 ４ カルシウムアルミネート類１００重量部に対し生石
灰または消石灰を１００重量部以下添加することを特徴
とする特許請求の範囲第３項記載のカルシウムアルミネ
ート類の凝結調節方法。 ５ 特許請求の範囲第１項または第３項において、有機
カルボン酸またはその塩、ホウ酸またはその塩、硝酸塩
、およびポルトランド系セメントまたはポルトランド系
セメントタリンカのうちの少くとも一種を添加すること
を特徴とするカルシウムアルミネート類の凝結調節方法 ６ 前記有機カルボン酸またはその塩、ホウ酸またはそ
の塩、および硝酸塩のうちの少くとも一種を、カルシウ
ムアルミネート類に対し１０重量係以下添加することを
特徴とする特許請求の範囲第５項記載のカルシウムアル
ミネート類の凝結調節方法。 １ 前記有機カルボン酸がクエン酸、酒石酸およびグル
コン酸のうちの少くとも一種であることを特徴とする特
許請求の範囲第５項記載のカルシウムアルミネート類の
凝結調節方法。 ８ 前記ポルトランド系セメントまたはポルトランド系
セメントタリンカをカルシウムアルミネート類に対して
５〜１００重量係添加することを特徴とする特許請求の
範囲第５項記載のカルシウムアルミネート類の凝結調節
方法 ９ 前記ポルトランド系セメントが普通ポルトランドセ
メント、早強ポルトランドセメント、超早強ポルトラン
ドセメントおよび混合ポルトランドセメントのうちの少
くとも一種であることを特徴とする特許請求の範囲第５
項記載のカルシウムアルミネート類の凝結調節方法。[Claims] 1. Alumina raw materials and coal raw materials, or these raw materials and silicic acid raw materials and halides in various proportions,
12CaO・7A1203.3Ca obtained by crushing and firing
0.3A71!203.CaX2 and 11Ca0.7
Water containing calcium haloaluminate containing at least one type of calcium aluminate or 11Ca0.7A4203.CaF25 to 60 weight factor, 3CaO-8iO25 weight factor or more of A1203.CaX2 (X represents a halogen atom). A method for controlling the setting of calcium aluminates, which comprises adding an alkali metal or alkaline earth metal chloride to hard clinker. 2. At least one of calcium chloride, magnesium chloride, potassium chloride, and sodium chloride as the alkali metal or alkaline earth metal chloride is added at a molar ratio of 0.1 to the A 11203 component in the calcium aluminates. The setting control ability of the calcium aluminates according to claim 1, which is characterized in that the calcium aluminates and chlorides are added to 3. A method for controlling the setting of calcium aluminates, which comprises adding slaked lime. 4. The method for controlling the setting of calcium aluminates according to claim 3, characterized in that 100 parts by weight or less of quicklime or slaked lime is added to 100 parts by weight of calcium aluminates. 5 In claim 1 or 3, at least one of organic carboxylic acid or its salt, boric acid or its salt, nitrate, and Portland cement or Portland cement tarinka is added. Method 6 for controlling the coagulation of calcium aluminates, characterized in that at least one of the organic carboxylic acid or its salt, boric acid or its salt, and nitrate is added to calcium aluminates by weight of 10 or less. A method for controlling the setting of calcium aluminates according to claim 5. 1. The method for controlling coagulation of calcium aluminates according to claim 5, wherein the organic carboxylic acid is at least one of citric acid, tartaric acid, and gluconic acid. 8. A method for controlling the setting of calcium aluminates according to claim 5, characterized in that 5 to 100 weight percent of the Portland cement or Portland cement tarinka is added to the calcium aluminates. 9. Claim 5, wherein the Portland cement is at least one of ordinary Portland cement, early strength Portland cement, ultra early strength Portland cement, and mixed Portland cement.
Method for controlling coagulation of calcium aluminates as described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54077547A JPS591228B2 (en) | 1979-06-21 | 1979-06-21 | Method for controlling the setting of hydraulic calcium aluminates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54077547A JPS591228B2 (en) | 1979-06-21 | 1979-06-21 | Method for controlling the setting of hydraulic calcium aluminates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS565366A JPS565366A (en) | 1981-01-20 |
| JPS591228B2 true JPS591228B2 (en) | 1984-01-11 |
Family
ID=13637029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54077547A Expired JPS591228B2 (en) | 1979-06-21 | 1979-06-21 | Method for controlling the setting of hydraulic calcium aluminates |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591228B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61157498U (en) * | 1985-03-20 | 1986-09-30 | ||
| JPS63275215A (en) * | 1987-05-06 | 1988-11-11 | Matsushima Kogyo Co Ltd | Saw resonator |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2656782B2 (en) * | 1988-02-22 | 1997-09-24 | 電気化学工業株式会社 | Low temperature hydraulic composition |
| JP2771591B2 (en) * | 1989-04-19 | 1998-07-02 | 電気化学工業株式会社 | Production method of cured body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5239844A (en) * | 1975-09-25 | 1977-03-28 | Agency Of Ind Science & Technol | Selective penetrating reflection film |
-
1979
- 1979-06-21 JP JP54077547A patent/JPS591228B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5239844A (en) * | 1975-09-25 | 1977-03-28 | Agency Of Ind Science & Technol | Selective penetrating reflection film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61157498U (en) * | 1985-03-20 | 1986-09-30 | ||
| JPS63275215A (en) * | 1987-05-06 | 1988-11-11 | Matsushima Kogyo Co Ltd | Saw resonator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS565366A (en) | 1981-01-20 |
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