JPH0451594B2 - - Google Patents
Info
- Publication number
- JPH0451594B2 JPH0451594B2 JP61133717A JP13371786A JPH0451594B2 JP H0451594 B2 JPH0451594 B2 JP H0451594B2 JP 61133717 A JP61133717 A JP 61133717A JP 13371786 A JP13371786 A JP 13371786A JP H0451594 B2 JPH0451594 B2 JP H0451594B2
- Authority
- JP
- Japan
- Prior art keywords
- water glass
- cement
- sparingly soluble
- silica sol
- sodium
- 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
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
〔産業上の利用分野〕
本発明は軟弱あるいは漏水地盤の固結ないしは
止水を目的とする水ガラス、及びセメントを主材
とする懸濁型の地盤注入素材に関する。
〔従来の技術〕
セメント及び水ガラスを主材とする薬液を地盤
に注入する工法は、既に多く実用化に供されてい
る。
水ガラスと過剰の酸を均一に混合して得られる
酸性シリカゾルとセメントよりなる系もまた、多
く実用に供されており、これらは一応ゲル化は認
められ、アルカリの溶出は極めて少いことが知ら
れている。
〔発明が解決しようとする問題点〕
しかし、前者の方法では水ガラス、セメント共
に強アルカリ性を呈し、固結後においても長時間
にわたつてアルカリを溶出し続けるという欠点を
有している。
さらに、後者の方法ではセメントが硬化しない
ため固結体の強度は極めて劣るという欠点を有し
ている。
また、酸性シリカゾル−セメントの系に可溶性
のアルカリ剤（炭酸ナトリウム、炭酸水素ナトリ
ウム等）を併用することにより、上記の欠点を除
去することは可能である。しかし、この系におい
ては、ゲル化時間が遅延するか或はゲル化時間が
ばらついて不安定であつて、ゲル化に数10秒から
数分を要し、地盤中の間隔を短時間に完全に固結
せしめることが出来ない欠点を有する。
本発明の目的は数秒から遅くとも30秒以下とい
う短時間で完全に均一に固結し強度的にもすぐ
れ、またゲル化時間のバラツキも少く、安定した
ゲル化を付与し得る地盤注入用薬材を提供するこ
とにある。
〔問題点を解決するための手段〕
前述の目的を達成するため、本発明によれば、
水ガラスと酸を混合して得られる酸性シリカゾル
にセメントと二炭酸一水素三ナトリウムを合流し
てなることを特徴とする。
前述の本発明にかかる懸濁型水ガラス系地盤注
入用薬材はさらに難溶性の塩類、塩基類、または
金属酸化物を添加することもできる。
〔実施例〕
以下、本発明を実施例により具体的に詳述す
る。
１ 酸性シリカゾルの調整
過剰の酸と水ガラスを混合して得られる。
この配合の一例を示せば、表−１のとおりで
ある。
[Industrial Field of Application] The present invention relates to a suspension-type ground injection material whose main material is water glass and cement for the purpose of solidifying or water-stopping soft or leaky ground. [Prior Art] Many construction methods have already been put into practical use, in which chemical solutions mainly made of cement and water glass are injected into the ground. Many systems consisting of acidic silica sol and cement, obtained by uniformly mixing water glass and excess acid, are also in practical use, and although gelation has been observed, it has been shown that alkali elution is extremely small. Are known. [Problems to be Solved by the Invention] However, the former method has the disadvantage that both water glass and cement exhibit strong alkalinity, and the alkali continues to be eluted for a long time even after solidification. Furthermore, the latter method has the disadvantage that the cement does not harden and the strength of the solidified body is extremely poor. Furthermore, it is possible to eliminate the above-mentioned drawbacks by using a soluble alkali agent (sodium carbonate, sodium bicarbonate, etc.) in combination with the acidic silica sol-cement system. However, in this system, the gelation time is delayed or varies and is unstable, requiring several tens of seconds to several minutes for gelation, and it is difficult to completely close the gaps in the ground in a short period of time. It has the disadvantage that it cannot be solidified. The purpose of the present invention is to provide a chemical for ground injection that can solidify completely and uniformly in a short period of time, from several seconds to 30 seconds at the latest, has excellent strength, has little variation in gelation time, and can provide stable gelation. Our goal is to provide the following. [Means for solving the problem] In order to achieve the above-mentioned object, according to the present invention,
It is characterized by being made by combining cement and trisodium dihydrogen carbonate with acidic silica sol obtained by mixing water glass and acid. The suspension-type water glass-based ground injection drug according to the present invention described above may further contain sparingly soluble salts, bases, or metal oxides. [Example] Hereinafter, the present invention will be specifically explained in detail with reference to Examples. 1 Preparation of acidic silica sol Obtained by mixing excess acid and water glass. An example of this formulation is shown in Table 1.
【表】
表−１において酸としては硫酸を例示した
が、塩酸、硝酸又は酸性硫酸ナトリウム等水溶
液が酸性を呈する塩類であつてもよい。
２ 酸性シルカゾル−セメント−セスキ炭酸ナト
リウム系の調整。Ａ液として表−１の酸性シリ
カゾル、Ｂ液としてセスキ炭酸ナトリウムを含
むセメント懸濁液（本発明）、一般の可溶性ア
ルカリ剤（対象）およびセスキ炭酸ナトリウム
の使用量に相当（化学的当量）する炭酸ナトリ
ウムと炭酸水素ナトリウムの混合物（対象）を
それぞれ使用し、これらＡ液とＢ液を合流し、
固結せしめ、結果を表−２に示す。[Table] Although sulfuric acid is exemplified as the acid in Table 1, salts whose aqueous solution is acidic, such as hydrochloric acid, nitric acid, or acidic sodium sulfate, may also be used. 2 Preparation of acidic silcasol-cement-sodium sesquicarbonate system. Acidic silica sol in Table 1 as liquid A, cement suspension containing sodium sesquicarbonate (invention) as liquid B, equivalent to the usage amount (chemical equivalent) of general soluble alkali agent (target) and sodium sesquicarbonate. Using a mixture (target) of sodium carbonate and sodium hydrogen carbonate, these A and B solutions are combined,
It was solidified and the results are shown in Table 2.
【表】【table】
【表】
(1) セスキ炭酸ナトリウムの単独使用（実験番
号３、５、８、10、12、14）は、それと化学
的当量に相当する炭酸ナトリウムと炭酸水素
ナトリウムの混合物を使用した場合（実験番
号４、６、９、11、13、15）に比較してゲル
化時間が非常に短縮されている。
(2) 一般のアルカリ剤として炭酸ナトリウムを
単独に使用した場合（実験番号１、２、７）
は何れもゲル化に長時間を要する。
３ 酸性シリカゾル−セメント−セスキ炭酸ナト
リウム−難溶性塩類、塩基、金属酸化物系の調
整。
本発明はＢ液中のセメント−セスキ炭酸ナトリ
ウムの系にさらに難溶性の塩類又は難溶性の塩基
又は難溶性の金属酸化物を少量添加することによ
りゲル化時間を更に短縮することが出来る。
難溶性の塩類として炭酸カルシウム、焼石こう
を、難溶性の塩基として水酸化マグネシウム、水
酸化アルミニウムを、難溶性の金属酸化物として
は酸化マグネシウム、酸化アルミニウムを用いた
時の結果を表−３に示す。[Table] (1) When sodium sesquicarbonate was used alone (Experiment No. 3, 5, 8, 10, 12, 14), when a mixture of sodium carbonate and sodium bicarbonate corresponding to chemical equivalents was used (Experiment No. 3, 5, 8, 10, 12, 14). The gelation time is significantly shortened compared to Nos. 4, 6, 9, 11, 13, and 15). (2) When sodium carbonate is used alone as a general alkaline agent (experiment numbers 1, 2, 7)
Both require a long time to gel. 3. Adjustment of acidic silica sol-cement-sodium sesquicarbonate-sparingly soluble salts, bases, and metal oxide systems. In the present invention, the gelation time can be further shortened by adding a small amount of sparingly soluble salts, sparingly soluble bases, or sparingly soluble metal oxides to the cement-sodium sesquicarbonate system in solution B. Table 3 shows the results when using calcium carbonate and calcined gypsum as sparingly soluble salts, magnesium hydroxide and aluminum hydroxide as sparingly soluble bases, and magnesium oxide and aluminum oxide as sparingly soluble metal oxides. show.
以上からＡ液として酸性シリカゾルを、Ｂ液と
してセメント−セスキ炭酸ナトリウムの系を用い
てＡ液とＢ液を合流することにより10秒から30秒
程度、更にＢ液としてセメント−セスキ炭酸ナト
リウム−難溶性の塩、塩基、金属酸化物の系を用
いてＡ液とＢ液を合流することにより数秒から10
数秒程度で均一にして且つ高強度の固結体を得る
ことが可能である。
From the above, using acidic silica sol as the A liquid and cement-sodium sesquicarbonate system as the B liquid, the A and B liquids are combined for about 10 to 30 seconds, and then the B liquid is cement-sodium sesquicarbonate. By combining liquids A and B using a system of soluble salts, bases, and metal oxides, the
It is possible to obtain a uniform and high-strength solidified body in about a few seconds.
Claims (1)
ゾルにセメントと二炭酸一水素三ナトリウムを合
流してなる懸濁型水ガラス系地盤注入用薬材。 ２ 特許請求範囲１において更に難溶性の塩類、
塩基類、または金属酸化物を添加することよりな
る懸濁型水ガラス系地盤注入用薬材。[Scope of Claims] 1. A suspended water glass-based ground injection drug made by combining cement and trisodium dihydrogen carbonate with acidic silica sol obtained by mixing water glass and acid. 2 In Claim 1, further sparingly soluble salts,
Suspended water glass-based ground injection agent made by adding bases or metal oxides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133717A JPS62290791A (en) | 1986-06-11 | 1986-06-11 | Grout for injection into ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133717A JPS62290791A (en) | 1986-06-11 | 1986-06-11 | Grout for injection into ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62290791A JPS62290791A (en) | 1987-12-17 |
| JPH0451594B2 true JPH0451594B2 (en) | 1992-08-19 |
Family
ID=15111255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61133717A Granted JPS62290791A (en) | 1986-06-11 | 1986-06-11 | Grout for injection into ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62290791A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5806079B2 (en) * | 2011-10-21 | 2015-11-10 | 電気化学工業株式会社 | Cement quick setting agent, cement composition, and spraying method |
| JP7478458B2 (en) * | 2022-04-27 | 2024-05-07 | 株式会社サン・エンジニア | Bleeding inhibitor for hydraulic solidification liquid |
-
1986
- 1986-06-11 JP JP61133717A patent/JPS62290791A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62290791A (en) | 1987-12-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |