JPH0380137A - Cement composition - Google Patents
Cement compositionInfo
- Publication number
- JPH0380137A JPH0380137A JP21490689A JP21490689A JPH0380137A JP H0380137 A JPH0380137 A JP H0380137A JP 21490689 A JP21490689 A JP 21490689A JP 21490689 A JP21490689 A JP 21490689A JP H0380137 A JPH0380137 A JP H0380137A
- Authority
- JP
- Japan
- Prior art keywords
- mgo
- water
- cement
- compsn
- magnesium oxide
- 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
- 239000004568 cement Substances 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 title claims description 14
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 22
- 239000000395 magnesium oxide Substances 0.000 claims description 21
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 15
- 159000000009 barium salts Chemical class 0.000 claims description 13
- 239000010452 phosphate Substances 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 18
- 235000021317 phosphate Nutrition 0.000 abstract description 11
- 150000003839 salts Chemical class 0.000 abstract description 5
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 abstract description 4
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract description 4
- 238000005058 metal casting Methods 0.000 abstract description 3
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 abstract description 2
- 229910001626 barium chloride Inorganic materials 0.000 abstract description 2
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 2
- 235000019799 monosodium phosphate Nutrition 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000011044 quartzite Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- ZHJGWYRLJUCMRT-UHFFFAOYSA-N 5-[6-[(4-methylpiperazin-1-yl)methyl]benzimidazol-1-yl]-3-[1-[2-(trifluoromethyl)phenyl]ethoxy]thiophene-2-carboxamide Chemical group C=1C=CC=C(C(F)(F)F)C=1C(C)OC(=C(S1)C(N)=O)C=C1N(C1=C2)C=NC1=CC=C2CN1CCN(C)CC1 ZHJGWYRLJUCMRT-UHFFFAOYSA-N 0.000 description 1
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- WAKZZMMCDILMEF-UHFFFAOYSA-H barium(2+);diphosphate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O WAKZZMMCDILMEF-UHFFFAOYSA-H 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- QQFLQYOOQVLGTQ-UHFFFAOYSA-L magnesium;dihydrogen phosphate Chemical compound [Mg+2].OP(O)([O-])=O.OP(O)([O-])=O QQFLQYOOQVLGTQ-UHFFFAOYSA-L 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 229910000401 monomagnesium phosphate Inorganic materials 0.000 description 1
- 235000019785 monomagnesium phosphate Nutrition 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は酸化マグネシウム成分とリン酸塩成分を基本成
分としこれに水を加えるだけで反応硬化するワンパック
型のマグネシア−ホスフェトセメント組成物に関するも
のである。Detailed Description of the Invention (Industrial Field of Application) The present invention is a one-pack type magnesia-phosphate cement composition which has a magnesium oxide component and a phosphate component as basic components and can be reacted and hardened simply by adding water thereto. It is related to.
更に言えば、本発明は建築物、道路等の補修用セメント
材、 モルタル材または補修用コンクリート材、 歯科
用またはその他の金属鋳込用鋳型材、 耐火物材または
その表面コーテイング材に用いられるマクネシアーポス
フェートセメントに関するものである。Furthermore, the present invention provides a cement material for repairing buildings, roads, etc., a mortar material or a concrete material for repairing, a mold material for dental or other metal casting, a refractory material, or a mask used for its surface coating material. It concerns nesia phosphate cement.
（従来の技術）
従来よりマグネシア−ホスフェートセメント組成物が短
時間で高強度の硬化体をつくり、熱的な線変化率も低く
特長ある材料であることは知られていたが、硬化時間が
２−４分と極端に短く作業性に欠けるためその用途は限
定されてき た。(Prior art) It has been known that magnesia-phosphate cement compositions produce high-strength hardened products in a short period of time and are characteristic materials with a low thermal linear change rate. - Its use has been limited because it is extremely short (4 minutes) and lacks workability.
この硬化時間を延ばすために
■基本的なＭ ｇ Ｏ／ Ｐ ２０５比を変えたり、
カルボン酸などの遅延剤を加える方法
■効果的な遅延剤としてホウ素のオキシ酸類を使用する
方法（特開昭５１−７６３２０＋■リン酸成分としてポ
リリン酸アンモニウム溶液を使用する方法（米国特許３
．２８５．７５８号）
等が提案されている。In order to extend this curing time, ■ change the basic M g O / P 205 ratio,
A method of adding a retardant such as a carboxylic acid ■ A method of using boron oxyacids as an effective retarder (JP-A-51-76320 + ■ A method of using an ammonium polyphosphate solution as a phosphoric acid component (US Pat. No. 3)
．． 285.758) etc. have been proposed.
（発明が解決しようとする問題点）
しかしながら、硬化時間調節のための■の方法は硬化体
強度を低下させ良くない、■の方法はＢ ２０３成分に
より高温において低融点化合物を生じるため耐火材や鋳
型材用途には適さない。(Problems to be Solved by the Invention) However, the method (2) for adjusting the curing time is not good because it reduces the strength of the cured product. Not suitable for mold material use.
■の方法はリン酸成分が溶液状のため製品形態をワンパ
ック型にできなくなる等の問題点を有していた。Method (2) had problems such as the fact that the phosphoric acid component was in the form of a solution, making it impossible to form the product into a one-pack type.
以上の問題点に鑑み、本発明者等は、 鋭意研究を行っ
た結果、遅延剤として水溶性バリウム塩が有効であるこ
とを知見し本発明を得た。In view of the above problems, the present inventors conducted intensive research and found that water-soluble barium salt is effective as a retarder, thereby obtaining the present invention.
（問題を解決するための手段）
即ち、本発明は、 酸化マグネシウム成分及びリン酸塩
成分を基本成分とする反応型セメント組成物に、 水溶
性バリウム塩を含有させることを特徴とするセメント組
成物である。(Means for solving the problem) That is, the present invention provides a cement composition characterized in that a water-soluble barium salt is contained in a reactive cement composition whose basic components are a magnesium oxide component and a phosphate component. It is.
水溶性バリウム塩は結晶粉末で−あり各成分を混合一体
化させてワンバック型セメントとすることができ、 水
もしくはコロイダルシリカ水分散液（シリカゾル）を加
えるだけで硬化体をつくることができる。Water-soluble barium salt is a crystalline powder and can be made into a one-back type cement by mixing and integrating the various components, and a hardened product can be created by simply adding water or an aqueous colloidal silica dispersion (silica sol).
本発明に使用する酸化マグネシウムとしてはＭｇＯ成分
が９５％以上のものが好ましいが、用途によっては８０
％以下でも使用でき特に限定されるものではない。The magnesium oxide used in the present invention preferably has an MgO content of 95% or more, but depending on the use, it may have an MgO content of 80% or more.
% or less and is not particularly limited.
また酸化マグネシウムの粒度は３２５メツシュ篩通過分
が８０重量％以上であるのが好ましいが、 １５０メツ
シュ篩通過分が８０重盟％以上でも使用でき、酸化マグ
ネシウムに以下で記載する骨材としての役割まで持たせ
るならば更に粗粒なものでも使用できる。In addition, it is preferable that the particle size of magnesium oxide is 80% by weight or more of the amount passing through a 325 mesh sieve, but it can also be used even if the amount passing through a 150 mesh sieve is 80% by weight or more, and magnesium oxide has a role as an aggregate as described below. Even coarser grains can be used if they last up to that point.
特に、使用しやすい酸化マグネシウムは酸化マグネシウ
ム 無水リン酸２水素アンモニウム。水を重量比で］、
、４： ］、、４： ］、、Ｏに混合すると５分以
内に硬化する性質を有するものである。In particular, magnesium oxide that is easy to use is magnesium oxide anhydrous ammonium dihydrogen phosphate. water by weight],
, 4: ], , 4: ], , has the property of curing within 5 minutes when mixed with O.
本発明に使用するリン酸塩成分としてはリン酸２水素ア
ンモニウム、 リン酸２水素ナトリウム、 リン酸２水
素カリウム、 リン酸２水素マグネシウム等から選ばれ
る一種または二種以上の混合物が使用できる。 これら
のリン酸塩は酸化マグネシウムと粉体同志混合したとき
の貯蔵安定性の点で無水物が好ましいが、特に長期保存
をしないならば結晶水をもった含水塩でもよい。As the phosphate component used in the present invention, one or a mixture of two or more selected from ammonium dihydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, magnesium dihydrogen phosphate, etc. can be used. These phosphates are preferably anhydrous from the viewpoint of storage stability when mixed with magnesium oxide in powder form, but hydrated salts containing water of crystallization may also be used unless they are stored for a particularly long period of time.
同様に貯蔵安定性の点で微粉末よりも粗粒がよく、 好
ましくは１５０メツシュ通過分が１０重量％以下がよい
。Similarly, from the viewpoint of storage stability, coarse particles are better than fine powders, and preferably the amount passing through 150 meshes is 10% by weight or less.
水溶性バリウム塩としては水酸化バリウム。A water-soluble barium salt is barium hydroxide.
塩化バリウム、硝酸バリウムなどの水溶性バリウム塩で
あればいずれも使用でき、貯蔵安定性のためには無水物
が好ましいが、 含水物でも用途によっては使用できる
。水溶性バリウム塩は使用量はセメント組成物の目的と
する硬化時間に合わせて適宜調節することができるが、
その大体の使用量は酸化マグネシウム成分（ＭｇＯ）
１モルに対しバリウム塩として○ Ｏ↓〜０．２モル使
用し、 更に好ましくは００３〜０．１５モル使用する
。Any water-soluble barium salt such as barium chloride or barium nitrate can be used, and anhydrous salts are preferred for storage stability, but hydrated salts can also be used depending on the purpose. The amount of water-soluble barium salt used can be adjusted as appropriate depending on the desired hardening time of the cement composition.
Most of the amount used is magnesium oxide component (MgO)
The barium salt is used in an amount of 0.2 to 0.2 moles per mole, more preferably 0.03 to 0.15 moles.
尚、酸化マグネシウム成分（ＭｇＯ）と、 リン酸塩成
分（Ｐ２Ｏ３）との配合割合は、使用目的により異なる
が、 一般にはＭｇＯ： ＰｐＯｓ（モル比）＝ｌ：
０．１５〜１・ ０．６７が好まし い。The blending ratio of the magnesium oxide component (MgO) and the phosphate component (P2O3) varies depending on the purpose of use, but is generally MgO: PpOs (molar ratio) = l:
0.15 to 1.0.67 is preferable.
酸化マグネシウム、 リン酸塩、 バリウム塩は粉体で
混合し、 これに水もしくは水性シリカゾルを添加して
使用することができるが、 骨材成分を、 あらかじめ
粉体に混合しておくこともよい。骨材成分は用途によっ
て任意選定することができるが、 例えば耐火材料用途
には不活性なシリカ、 アルミナ、 マグネシア、 カ
ルシア、 ジルコニア、 ムライトなど、建材や土木材
用途には珪石、珪砂、珪岩、 コンクリート用骨材など
を用途に応じた粒度配合で使用する。また骨材成分の添
加は酸化マグネシウム粒子とリン酸塩粒子の固体間反応
を物理的に防止する効果もあり、 その目的のためには
微細な骨材の存在は好ましい。Magnesium oxide, phosphate, and barium salt can be used by mixing them in the form of powder and adding water or aqueous silica sol to this, but it is also good to mix the aggregate components into the powder in advance. Aggregate components can be selected arbitrarily depending on the application, but for example, inert silica, alumina, magnesia, calcia, zirconia, and mullite are used for fire-resistant materials, and silica, silica sand, quartzite, and concrete are used for building materials and civil engineering materials. Use aggregate, etc., with a particle size mix depending on the purpose. Additionally, the addition of aggregate components has the effect of physically preventing solid-solid reactions between magnesium oxide particles and phosphate particles, and for that purpose, the presence of fine aggregate is preferable.
（作 用）
本発明における酸化マグネシウム成分とリン酸塩成分は
周知のように式（１）の様に反応し、水不溶性の（ＮＨ
，）！−ｇＰ０４ ６Ｈ３Ｏを生成して硬化するが、
）１２０
Ｍ ｇ Ｏ十 （ＮＨｉ） Ｈ２ＰＯ＋
−シ（ＮＨｉ）ＭｇＰＯ＋ ・ ６）４ ２０
（１）この反応において、 バリウム塩が存在すると
遅延作用を生じる。 しかし、 その作用機構について
は詳細は不明であるが、恐らく、 リン酸バリウムの析
出又は固溶体の生成が考えられ、 これらの多成分系の
形成において反応が制御されることによるものと考えら
れる。(Function) As is well known, the magnesium oxide component and the phosphate component in the present invention react as shown in formula (1), and the water-insoluble (NH
,)! -gP04 6H3O is produced and cured, but )120 M g O (NHi) H2PO+
-NHi)MgPO+ ・6) 4 20
(1) In this reaction, the presence of barium salt causes a delayed effect. However, the details of its mechanism of action are unknown, but it is probably due to the precipitation of barium phosphate or the formation of a solid solution, and the reaction is controlled in the formation of these multicomponent systems.
（実施例）
以下に実施例を挙げて説明するが、 ここで硬化時間と
は粉体混合物に水を添加してから混練物が可塑性を失う
までの時間で、指で押して判定する。硬化体の強度とは
硬化前の混練物を４０ ｍｍφＸ ４０ ｍｍ Ｈの型
枠に入れて硬化させ所定時間後に取り出してアームスラ
ー型強度試験機を用いて測定した圧縮強度である。(Example) Examples will be given and explained below. Here, the curing time is the time from when water is added to the powder mixture until the kneaded material loses its plasticity, and is determined by pressing with a finger. The strength of the cured product is the compressive strength measured by putting the kneaded product before curing into a mold of 40 mm φ x 40 mm H, curing it, taking it out after a predetermined period of time, and measuring it using an Armsler type strength testing machine.
１〜６１
酸化マグネシウム（宇部化学工業■製ＵＢＥ９５粉）と
試薬級リン酸２水素アンモニウム及び第１表に示す添加
剤を１分間混合し所定量の水を加えて更に１分間混練し
放置して硬化時間を測定した。結果は第１表に示した。1 to 61 Magnesium oxide (UBE95 powder manufactured by Ube Chemical Industry Co., Ltd.), reagent grade ammonium dihydrogen phosphate, and the additives shown in Table 1 were mixed for 1 minute, then a predetermined amount of water was added, kneaded for another 1 minute, and left to stand. Curing time was measured. The results are shown in Table 1.
この第１表の結果が示すように本発明に係るセメント組
成物はバリウム塩の添加により硬化時間の調節が出来た
。As shown in Table 1, the curing time of the cement composition according to the present invention could be adjusted by adding barium salt.
２
実施例１〜６で使用した材料に骨材として珪岩を配合し
十分混合したものについて硬化時間及び経時強度を測定
した。第２表に配合゛組成、第３表に測定値を示した。2. The materials used in Examples 1 to 6 were mixed with quartzite as an aggregate, and the hardening time and strength over time were measured. Table 2 shows the composition, and Table 3 shows the measured values.
バリウム塩の添加は、硬化時間を遅くすることができる
と同時更に硬化体の圧縮強度も高めることができた。The addition of barium salt was able to slow down the curing time and at the same time increase the compressive strength of the cured product.
比−較二例−旦
実施例１〜６の配合のバリウム塩を硝酸カルシウム４水
塩に代えて硬化時間を測定したところ、 ５分で硬化し
全く遅延効果はなかった。Comparison 2 Examples - When the barium salt in Examples 1 to 6 was replaced with calcium nitrate tetrahydrate and the curing time was measured, the curing took place in 5 minutes and there was no retarding effect at all.
８ ４
実施例］〜６のリン酸塩を試薬級リン酸２水素ナトリウ
ムに代えて試験を行い、硬化時間と１時間後の強度を測
定した。結果を第４表に記し た。8 4 Examples] Tests were conducted by replacing the phosphates in Examples 1 to 6 with reagent grade sodium dihydrogen phosphate, and the curing time and strength after 1 hour were measured. The results are shown in Table 4.
５
実施例１〜６の材料を用いて水の代わりに８１０２２０
％のシリカゾル（日本化学工業■製シリカドール２０）
を使用し、 硬化時間の測定を行った。結果を第５表に
示した。5 Using the materials of Examples 1 to 6 and replacing water with 810220
% silica sol (Silicadol 20 manufactured by Nihon Kagaku Kogyo ■)
was used to measure the curing time. The results are shown in Table 5.
特開平３
８０１３７ （４）
特開平３
８０１３７ （５）
特開平３
８０１３７ （６）
（発明の効果）
本発明のセメント組成物は、 従来に比して、硬化時間
を長くすることができるので、建築物道路等の補修用セ
メント材、 モルタル材または補修用コンクリート材、
歯科用またはその他の金属鋳込用鋳型材、耐火物材ま
たはその表面コテイング材等の幅広い用途に使用するこ
とができる。JP-A-3 80137 (4) JP-A-3 80137 (5) JP-A-3 80137 (6) (Effects of the Invention) The cement composition of the present invention has the following advantages: Cement materials, mortar materials or concrete materials for repairing buildings and roads, etc.
It can be used in a wide range of applications, such as dental or other metal casting mold materials, refractory materials, and surface coating materials.
Claims (1)
分とする反応型セメント組成物に、水溶性バリウム塩を
含有させることを特徴とするセメント組成物。(1) A cement composition characterized in that a water-soluble barium salt is contained in a reactive cement composition whose basic components are a magnesium oxide component and a phosphate component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21490689A JPH0380137A (en) | 1989-08-23 | 1989-08-23 | Cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21490689A JPH0380137A (en) | 1989-08-23 | 1989-08-23 | Cement composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380137A true JPH0380137A (en) | 1991-04-04 |
Family
ID=16663524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21490689A Pending JPH0380137A (en) | 1989-08-23 | 1989-08-23 | Cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909591A (en) * | 2015-05-22 | 2015-09-16 | 周末 | Bending-resistant basic magnesium sulfate cement and preparation method thereof |
-
1989
- 1989-08-23 JP JP21490689A patent/JPH0380137A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909591A (en) * | 2015-05-22 | 2015-09-16 | 周末 | Bending-resistant basic magnesium sulfate cement and preparation method thereof |
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