JP2000159586A - Cement dissolving liquid - Google Patents
Cement dissolving liquidInfo
- Publication number
- JP2000159586A JP2000159586A JP10375199A JP37519998A JP2000159586A JP 2000159586 A JP2000159586 A JP 2000159586A JP 10375199 A JP10375199 A JP 10375199A JP 37519998 A JP37519998 A JP 37519998A JP 2000159586 A JP2000159586 A JP 2000159586A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- liquid
- cement
- alkyl acetoacetate
- solution
- 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 21
- 239000007788 liquid Substances 0.000 title abstract description 18
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 10
- -1 alkyl acetoacetate Chemical compound 0.000 claims abstract description 10
- 150000001261 hydroxy acids Chemical class 0.000 claims abstract description 6
- 150000003628 tricarboxylic acids Chemical class 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 150000002763 monocarboxylic acids Chemical class 0.000 claims abstract description 3
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 abstract description 12
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004310 lactic acid Substances 0.000 abstract description 6
- 235000014655 lactic acid Nutrition 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000011260 aqueous acid Substances 0.000 abstract 1
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- WRQNANDWMGAFTP-UHFFFAOYSA-N Methylacetoacetic acid Chemical compound COC(=O)CC(C)=O WRQNANDWMGAFTP-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-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
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- KQTIIICEAUMSDG-UHFFFAOYSA-N tricarballylic acid Chemical compound OC(=O)CC(C(O)=O)CC(O)=O KQTIIICEAUMSDG-UHFFFAOYSA-N 0.000 description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- RBNPOMFGQQGHHO-UHFFFAOYSA-N -2,3-Dihydroxypropanoic acid Natural products OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- WDJHALXBUFZDSR-UHFFFAOYSA-N Acetoacetic acid Natural products CC(=O)CC(O)=O WDJHALXBUFZDSR-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920006051 Capron® Polymers 0.000 description 1
- RBNPOMFGQQGHHO-UWTATZPHSA-N D-glyceric acid Chemical compound OC[C@@H](O)C(O)=O RBNPOMFGQQGHHO-UWTATZPHSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- WOWBFOBYOAGEEA-UHFFFAOYSA-N diafenthiuron Chemical compound CC(C)C1=C(NC(=S)NC(C)(C)C)C(C(C)C)=CC(OC=2C=CC=CC=2)=C1 WOWBFOBYOAGEEA-UHFFFAOYSA-N 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 229940093915 gynecological organic acid Drugs 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 229940107700 pyruvic acid Drugs 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
- C04B41/5338—Etching
- C04B41/5361—Etching with molten material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はセメント、コンクリート
などを溶解する安全な液体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safe liquid for dissolving cement, concrete and the like.
【０００２】[0002]
【従来の技術】セメントの水酸化カルシウムを溶解し、
セメントを脆くする液としてアセト酢酸メチルが用いら
れてきた。しかし、これは作用が弱く、時間を要し、か
つ有機溶媒であるので環境汚染の恐れがある。さらに有
害性、引火性、揮発性もあるので取扱に難点がある。次
に、硫酸、塩酸、フッ酸なども有効であるが有害性があ
り、廃液処理に難点がある。そこで安全性が高く、無害
でかつセメント成分を容易に溶解する液が求められてい
る。2. Description of the Related Art Dissolve calcium hydroxide in cement,
Methyl acetoacetate has been used as a liquid to make the cement brittle. However, this is weak in action, takes time, and is an organic solvent, which may cause environmental pollution. In addition, it is harmful, flammable, and volatile, which makes it difficult to handle. Next, sulfuric acid, hydrochloric acid, hydrofluoric acid and the like are effective but harmful, and there is a problem in waste liquid treatment. Therefore, there is a demand for a liquid which is highly safe, harmless and easily dissolves cement components.
【０００３】[0003]
【発明が解決しようとする課題】無害、安全かつ環境汚
染の心配がなく、セメントを容易に溶解する液を発明す
る。SUMMARY OF THE INVENTION The present invention invents a liquid which is harmless, safe and free from environmental pollution and which can easily dissolve cement.
【０００４】[0004]
【課題を解決するための手段】発明者は、水酸化カルシ
ウム、水酸化マグネシウム、炭酸化カルシウム等と反応
し、反応速度が大きく、かつ安全、無害な液として、モ
ノカルボン酸、ジカルボン酸、トリカルボン酸、ケトカ
ルボン酸、ヒドロキシ酸の有機酸を見い出した。これら
は単独で用いてもよいし、混合して用いてもよいが、混
合する方が好ましい結果を与える場合がある。The inventor of the present invention reacted with calcium hydroxide, magnesium hydroxide, calcium carbonate, and the like to obtain a monocarboxylic acid, a dicarboxylic acid, a tricarboxylic acid, a monocarboxylic acid, a dicarboxylic acid, or a tricarboxylic acid as a safe and harmless liquid having a high reaction rate. Organic acids such as acids, ketocarboxylic acids and hydroxy acids have been found. These may be used alone or may be used as a mixture. However, mixing may give more preferable results.
【０００５】ジカルボン酸にはシュウ酸、マロン酸、マ
イレン酸、フマル酸、フタル酸、コハク酸が代表的で、
作用は弱くなるが、グルタル酸、アジピン酸、ピメリン
酸、スベリン酸、アゼライン酸、セバシン酸等も含まれ
る。トリカルボン酸には、クエン酸、トリカルバリル酸
がある。ケトカルボン酸にはピルビン酸、アセト酢酸等
がある。オキシカルボン酸のうち既述のものを除くと、
乳酸、グルコール酸、ヒドロアクリル酸、りんご酸、グ
リセリン酸、サリチル酸、オキシ吉草酸、オキシカプロ
ン酸、アスコルビン酸等がある。モノカルボン酸にはギ
酸、酢酸の他、プロピオン酸、酪酸、吉草酸、カプロン
等があるが、ギ酸、酢酸は、刺激性、腐食性があり、好
ましいとはいえない。しかし、他のカルボン酸と混合し
て割合を少なくして用いることができる。[0005] Typical dicarboxylic acids are oxalic acid, malonic acid, maleic acid, fumaric acid, phthalic acid and succinic acid.
Although the effect is weakened, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid and the like are also included. Tricarboxylic acids include citric acid and tricarballylic acid. Ketocarboxylic acids include pyruvic acid and acetoacetic acid. Excluding the above-mentioned oxycarboxylic acids,
Lactic acid, glycolic acid, hydroacrylic acid, malic acid, glyceric acid, salicylic acid, oxyvaleric acid, oxycaproic acid, ascorbic acid and the like. Monocarboxylic acids include propionic acid, butyric acid, valeric acid, and capron in addition to formic acid and acetic acid. Formic acid and acetic acid are not preferable because they are irritating and corrosive. However, it can be mixed with other carboxylic acids and used in a reduced proportion.
【０００６】本発明の溶解液はアセト酢酸メチルのよう
な揮発性がないため、長時間作用するという特徴があ
り、また、ほとんどのものが有害性を有しない。特に、
ヒドロキシ酸との混合液は、ヒドロキシ酸自体が沸点が
高く、より長時間作用することができる一方、ヒドロキ
シ酸が反応力に劣るのを他の酸が補うため、最も適して
いるといえる。本発明の好ましい実施態様は、有機酸の
１０〜６０％水溶液を調合し、それをセメントにかける
と直ちに反応が生じ、気体が発生する。物理的にこすっ
たり、振動を与えるとより反応は促進される。特に、高
周波振動が良い結果を与える。水溶液は濃厚であるほど
良い結果を与えるとは限らず、実験では、２０〜３０％
液で十分である。[0006] The solution of the present invention does not have the volatility of methyl acetoacetate, and therefore has the characteristic of acting for a long time, and most of them have no harmfulness. In particular,
A mixed solution with a hydroxy acid is the most suitable because the hydroxy acid itself has a high boiling point and can act for a longer time, but the other acid compensates for the inferior reactivity of the hydroxy acid. A preferred embodiment of the present invention is to prepare a 10 to 60% aqueous solution of an organic acid and apply it to cement, whereupon the reaction takes place and gas is evolved. The reaction is accelerated by physically rubbing or applying vibration. In particular, high frequency vibration gives good results. Aqueous solutions do not always give better results when they are thicker, and in experiments, 20-30%
Liquid is enough.
【０００７】次に、これらの液は粘度が大きく、浸透性
には欠ける。そこで、それらにアセト酢酸アルキルを加
えた液は、浸透性と強い溶解液を有することになる。乳
酸、グリコール酸は液状であり、アセト酢酸アルキルに
溶解するので加水分解が生じにくく好ましい。また、酸
水溶液とアセト酢酸アルキルの混液は加水分解が徐々に
進行するので、作業直前に混合するのが好ましい。Next, these liquids have high viscosity and lack permeability. Therefore, a solution obtained by adding alkyl acetoacetate to them has a permeability and a strong solution. Lactic acid and glycolic acid are preferable because they are liquid and are dissolved in alkyl acetoacetate, so that hydrolysis hardly occurs. Further, since the hydrolysis of the mixed solution of the acid aqueous solution and the alkyl acetoacetate proceeds gradually, it is preferable to mix them immediately before the operation.
【０００８】[0008]
【作用】本発明の溶解液は、有機酸であるため安全かつ
不揮発性であり、まずセメントに含まれる炭酸カルシウ
ムや炭酸マグネシウムと反応するとともに、水酸化カル
シウムとも反応しセメントの結合成分を破壊し、遂には
セメントをもろくする。この時、ジカルボン酸又はトリ
カルボン酸は、カルシウムやマグネシウムとキレート化
合物を生成するため、反応が容易に進行するものと考え
られる。The solution of the present invention is safe and non-volatile because it is an organic acid. First, it reacts with calcium carbonate and magnesium carbonate contained in cement, and also reacts with calcium hydroxide to destroy the cement binding component. Finally, the cement becomes brittle. At this time, the dicarboxylic acid or tricarboxylic acid generates a chelate compound with calcium or magnesium, so that the reaction is considered to proceed easily.
【０００９】[0009]
【実施例１】クエン酸３０％水溶液をマンションベラン
ダのセメントにつけた。気泡が大量に発生し、セメント
が柔らかくなった。EXAMPLE 1 A 30% aqueous solution of citric acid was applied to cement on an apartment veranda. Bubbles were generated in large quantities and the cement became soft.
【０００１０】[00010]
【実施例２】マロン酸３０％、乳酸１０％からなる水溶
液をセメントにかけ、セメントを軟化させ、ブラシで削
って、セメントを剥がすことができた。Example 2 An aqueous solution consisting of 30% malonic acid and 10% lactic acid was applied to cement, the cement was softened, and the cement was peeled off with a brush.
【０００１１】[00011]
【実施例３】クエン酸２５％、乳酸１０％からなる水溶
液を壁に付着したセメントを剥がした。Example 3 A cement containing 25% citric acid and 10% lactic acid on the wall was peeled off.
【０００１２】[00012]
【実施例４】乳酸５に対し、アセト酢酸メチル１０の溶
液と、クエン酸１０％水溶液を１対１の割合で作業直前
に混合した液はセメント溶解力を有した。Example 4 A solution obtained by mixing a solution of methyl acetoacetate 10 with a 10% aqueous solution of citric acid in a ratio of 1 to 1 with respect to lactic acid 5 immediately before the operation had cement dissolving power.
Claims (2)
ルボン酸、ケトカルボン酸、ヒドロキシ酸のいずれか一
つ又は混合液からなるセメント溶解液。1. A cement solution comprising one or a mixture of a monocarboxylic acid, a dicarboxylic acid, a tricarboxylic acid, a ketocarboxylic acid and a hydroxy acid.
載のセメント溶解液。2. The cement dissolving solution according to claim 1, wherein an alkyl acetoacetate is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10375199A JP2000159586A (en) | 1998-11-20 | 1998-11-20 | Cement dissolving liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10375199A JP2000159586A (en) | 1998-11-20 | 1998-11-20 | Cement dissolving liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000159586A true JP2000159586A (en) | 2000-06-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10375199A Pending JP2000159586A (en) | 1998-11-20 | 1998-11-20 | Cement dissolving liquid |
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| Country | Link |
|---|---|
| JP (1) | JP2000159586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016199458A (en) * | 2015-04-10 | 2016-12-01 | 株式会社竹中工務店 | Cement hardened body removal method |
-
1998
- 1998-11-20 JP JP10375199A patent/JP2000159586A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016199458A (en) * | 2015-04-10 | 2016-12-01 | 株式会社竹中工務店 | Cement hardened body removal method |
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