JPH0721138B2 - Injectable composition for ground consolidation - Google Patents
Injectable composition for ground consolidationInfo
- Publication number
- JPH0721138B2 JPH0721138B2 JP1309285A JP30928589A JPH0721138B2 JP H0721138 B2 JPH0721138 B2 JP H0721138B2 JP 1309285 A JP1309285 A JP 1309285A JP 30928589 A JP30928589 A JP 30928589A JP H0721138 B2 JPH0721138 B2 JP H0721138B2
- Authority
- JP
- Japan
- Prior art keywords
- water glass
- silica
- liquid
- alkaline earth
- caustic
- 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 - Fee Related
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
- C04B28/26—Silicates of the alkali metals
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は超微粒子懸濁状の反応剤組成物でシリカ化合物
を硬化することにより、極めて優れた浸透性を発揮する
地盤固結用注入剤組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a ground consolidation injection agent that exhibits extremely excellent permeability by curing a silica compound with a reaction agent composition in the form of ultrafine particles. It relates to a composition.
セメントを除いた無機系の懸濁型グラウトとして、各種
モル比の水ガラス、あるいはフライアッシュ、シリカフ
ューム、珪藻土等のポゾランあるいはホワイトカーボン
や水ガラス中のアルカリをイオン交換樹脂で除去して得
られた珪酸コロイド等と石灰類（主として消石灰）とか
らなるグラウトがある。しかし、使用する消石灰の粒子
はせいぜい40μ程度であるために細粒土への浸透性に欠
ける欠点がある。粉砕して微粒子にするには限度があ
り、また経済的に高価となる。As an inorganic suspension grout excluding cement, it was obtained by removing alkali in water glass of various molar ratios, or fly ash, silica fume, diatomaceous earth or white carbon or water glass with an ion exchange resin. There is a grout consisting of silicic acid colloids and limes (mainly slaked lime). However, since the particles of slaked lime used are about 40μ at the most, there is a drawback that the permeability to fine-grained soil is lacking. There is a limit to crushing into fine particles and it is economically expensive.
本発明の目的はアルカリ土金属の塩化物、苛性アルカリ
はともに水溶性で、両者の反応による生成物（アルカリ
土金属の水酸化物）の粒子は数μ程度の微粒子状でコロ
イド状を呈することに着目し、従来のシリカ化合物と消
石灰からなる系の地盤への浸透性の向上をはかり、極め
て優れた浸透性を発揮する地盤固結用注入剤組成物を提
供することにある。The object of the present invention is that both the alkaline earth metal chloride and caustic are water-soluble, and the particles of the product (alkaline earth metal hydroxide) produced by the reaction of both are colloidal in the form of fine particles of about several μm. In view of the above, it is an object of the present invention to provide an injectable composition for soil consolidation, which aims to improve the permeability of a conventional system composed of a silica compound and slaked lime to the soil, and exhibits extremely excellent permeability.
前述の目的を達成するため、本発明によれば、シリカ化
合物、例えば水ガラス、粉状シリカゲル（水ガラスのゲ
ル化物を粉状に粉砕したもの）、ホワイトカーボン、ポ
ゾラン、スラグのような珪酸カルシウム、水ガラス中の
アルカリをイオン交換樹脂で除去して得られた珪酸コロ
イドセメントと、アルカリ土金属の塩化物および苛性ア
ルカリをあらかじめ反応してなる硬化剤との混合物から
なることを特徴とする。To achieve the above objects, according to the present invention, silica compounds, such as water glass, powdered silica gel (a powdered product of water glass pulverized), white carbon, pozzolan, calcium silicate such as slag. , A mixture of a silicic acid colloidal cement obtained by removing alkali in water glass with an ion exchange resin and a curing agent obtained by previously reacting a chloride of alkaline earth metal and caustic alkali.
アルカリ土金属（Ｍ）の塩化物と苛性アルカリ（NOH）
は次の反応によってＭ（OH）２とNClを生成する。Alkaline earth metal (M) chloride and caustic alkali (NOH)
Produces M (OH) 2 and NCl by the following reaction.
MCl2＋2NOH→Ｍ（OH）２＋2NCl 生成したNClは液中に溶解しており、Ｍ（OH）２は微粒
子状（粒度：数μ）でコロイド状を呈し、通常のＭ（O
H）２に比べて極めて微粒子である。一般に水ガラスは
アルカリ土金属の塩化物と瞬間的に、またアルカリ土金
属の水酸化物とは数分間でゲル化するが、本発明による
硬化剤を用いると充分長いゲル化時間が得られる。ま
た、水ガラス以外のシリカ化合物に本発明による硬化剤
を加えても充分長いゲル化時間が得られる。MCl 2 + 2NOH → M (OH) 2 + 2NCl The produced NCl is dissolved in the liquid, and M (OH) 2 is in the form of fine particles (particle size: several μ) and colloidal.
It is extremely finer than H) 2 . Generally, water glass gels instantly with an alkaline earth metal chloride and with an alkaline earth metal hydroxide within a few minutes, but a sufficiently long gelling time can be obtained by using the curing agent of the present invention. Even if the curing agent according to the present invention is added to a silica compound other than water glass, a sufficiently long gelling time can be obtained.
以下本発明を次の実施例によって詳述する。 The present invention will be described in detail below with reference to the following examples.
1.使用材料 （１）シリカ化合物 シリカ化合物として水ガラス、ホワイトカーボン、水ガ
ラスをイオン交換樹脂処理によりアルカリを除去した珪
酸コロイド（以下珪酸コロイドと記す）、粉状シリカ、
ポゾランとして珪藻土を使用した例を挙げる。1. Materials used (1) Silica compound As a silica compound, water glass, white carbon, silicic acid colloid obtained by removing alkali from water glass by ion exchange resin treatment (hereinafter referred to as silicic acid colloid), powdered silica,
An example of using diatomaceous earth as pozzolan is given.
ｉ）水ガラス モル比の異なる表−１に示す組成の水ガラスを使用し
た。i) Water glass Water glass having a composition shown in Table 1 having different molar ratios was used.
ii）ホワイトカーボン 般用的なホワイトカーボンとして表−２に示すものを使
用した。 ii) White carbon As the general white carbon, those shown in Table 2 were used.
iii）珪酸コロイド 表−３に示す物性のものを使用した。 iii) Silica colloid The one having the physical properties shown in Table 3 was used.
iv）粉状シリカ 市販の粉状シリカゲル試薬を使用した。 iv) Powdered silica Commercially available powdered silica gel reagent was used.
ｖ）珪藻土 表−４に示す物性のものを使用した。v) Diatomaceous earth The physical properties shown in Table 4 were used.
（２）硬化剤 アルカリ土金属の塩化物として塩化カルシウム、苛性ア
ルカリとして苛性ソーダ、対照として消石灰を使用した
例を挙げる。 (2) Hardener An example in which calcium chloride is used as the chloride of the alkaline earth metal, caustic soda is used as the caustic alkali, and slaked lime is used as the control is given below.
ｉ）塩化カルシウム ２水塩（CaCl2・2H2O）試薬一級 ii）苛性ソーダ 水酸化ナトリウム（NaOH）試薬一級 iii）消石灰 水酸化カルシウム〔Ca（OH）２〕試薬一級 2.シリカ化合物として水ガラスを用いた系 Ａ液として水ガラス水溶液、Ｂ液として塩化カルシウム
と苛性ソーダを混合してなる消石灰含有懸濁液を用い、
Ａ−Ｂ混合液のゲル化時間と固結体の水中養生一軸圧強
度を表−５に示す。i) Calcium chloride dihydrate (CaCl 2 · 2H 2 O) reagent first class ii) Caustic soda sodium hydroxide (NaOH) reagent first class iii) Slaked lime calcium hydroxide [Ca (OH) 2 ] reagent first class 2. Water glass as silica compound A water glass aqueous solution is used as the liquid A, and a slaked lime-containing suspension obtained by mixing calcium chloride and caustic soda is used as the liquid B.
Table 5 shows the gelling time of the AB mixed liquid and the uniaxial pressure strength of the solidified body for curing in water.
表−５において、Ｂ液中の苛性ソーダをＡ液側に加えて
Ａ液（水ガラスと苛性ソーダ）とあとＢ液（塩化カルシ
ウム）を混合すると瞬結状となる。 In Table 5, when caustic soda in solution B is added to solution A side and solution A (water glass and caustic soda) and solution B (calcium chloride) are mixed, a instantaneous binding occurs.
3.シリカ化合物としてホワイトカーボンを用いた系 表−６に配合とゲル化時間ならびに水中養生一軸圧縮強
度を示す。3. System using white carbon as silica compound Table 6 shows the composition, gelation time, and uniaxial compressive strength under water curing.
表−６のＢ液が本発明硬化剤の組成物で塩化カルシウム
と苛性ソーダはあらかじめ混合して形成される。Liquid B in Table 6 is a composition of the curing agent of the present invention, which is formed by mixing calcium chloride and caustic soda in advance.
Ｂ液中の苛性ソーダをあらかじめＡ液に混合しておいて
から塩化カルシウムを加えるとすでにホワイトカーボン
から溶出したシリカ分が存在しておりそれが塩化カルシ
ウムと直接反応して瞬結状となる。しかし、あらかじめ
塩化カルシウムと苛性ソーダを混合した上でホワイトカ
ーボンと反応させると瞬間的に反応することなく、ゲル
化時間を調整できる。 When the caustic soda in the solution B is mixed with the solution A in advance and calcium chloride is added, the silica component already eluted from the white carbon is present and this reacts directly with the calcium chloride to form a momentary binding state. However, if calcium chloride and caustic soda are mixed in advance and reacted with white carbon, the gelling time can be adjusted without instantaneously reacting.
4.シリカ化合物として珪酸コロイド、粉状シリカ、珪藻
土を用いた系 表−７に配合とゲル化時間ならびに水中養生一軸圧縮強
度を示す。4. System using colloidal silicate, silica powder and diatomaceous earth as silica compound. Table-7 shows the composition, gelation time and uniaxial compressive strength for underwater curing.
この場合においてもＢ液中の苛性ソーダをあらかじめＡ
液中に加えておいてからＡ液とＢ液を混合すると瞬結状
となる。Even in this case, the caustic soda in the liquid B is previously
When the liquid A and the liquid B are mixed after being added to the liquid, a momentary setting occurs.
5.シリカ化合物を複数種用いた系 複数種のシリカ化合物として水ガラスとホワイトカーボ
ンを併用した系を一例として、表−８に配合とゲル化時
間ならびに水中養生一軸圧縮強度を示す。5. System using multiple types of silica compounds As an example of a system using water glass and white carbon as multiple types of silica compounds, Table 8 shows the composition, gelation time and uniaxial compressive strength under water curing.
この場合においてもＢ液中の苛性ソーダをＡ液中にあら
かじめ加えてＡ液とＢ液を混合すると瞬結状となる。 Also in this case, when caustic soda in the liquid B is added to the liquid A in advance and the liquids A and B are mixed, a instantaneous binding state occurs.
6.水ガラスと消石灰からなる系 対照としてＡ液と水ガラス水溶液、Ｂ液を消石灰懸濁液
を用い、AB混合によるゲル化時間、一軸圧縮強度を表−
９に示す。6. System consisting of water glass and slaked lime As a control, liquid A and water glass aqueous solution and liquid B are used as slaked lime suspension, and gelation time and uniaxial compression strength by AB mixing are shown
9 shows.
この場合、消石灰の粒度が大きいため土粒子間に対する
浸透性が悪い。In this case, since the particle size of slaked lime is large, the permeability between soil particles is poor.
7.浸透固結試験 内径5cm、高さ10cmのモールド中に豊浦標準砂を填充し
て、小型注入ポンプを用いてモールド下面から浸透試験
を行なった。表−６の実験No.9、11のＢ液を注入したと
ころ、Ｂ液は上部まで浸透して溢出した。溢出した液は
Ｂ液そのものとほとんど変化はなかった。 7. Penetration and Consolidation Test We filled a mold with an inner diameter of 5 cm and a height of 10 cm with Toyoura standard sand and conducted a permeation test from the bottom of the mold using a small injection pump. When the solution B of Experiment Nos. 9 and 11 in Table 6 was injected, the solution B permeated to the upper part and overflowed. The overflowed liquid was almost the same as the liquid B itself.
対照として表−９の実験No.23、24のＢ液を同じように
注入したところ消石灰が目づまりして上部からは上澄液
に相当する液が溢出して、そのうちにほとんど溢出しな
くなってしまった。As a control, when the B solutions of Experiment Nos. 23 and 24 in Table 9 were injected in the same manner, the slaked lime was clogged and the solution equivalent to the supernatant liquid overflowed from the upper part, and almost no more overflowed in the meantime. Oops.
同様にして実験No.6（表−５）、No.11（表−６）No.19
（表−８）および対照としてNo.28（表−９）のAB混合
液を注入して一週間後にモールド中からとり出して一軸
圧縮試験を行った。Similarly, Experiment No. 6 (Table-5), No. 11 (Table-6) No. 19
(Table 8) and as a control, the AB mixed solution of No. 28 (Table 9) was injected, and one week later, the mixture was taken out from the mold and subjected to a uniaxial compression test.
No.6、11、19は全体が均一に固結し、それぞれ24.5kgf/
cm2、25.8kgf/cm2、28.4kgf/cm2を示した。それに対し
て、対照としてのNo.28は下面付近のみ固結し、上部に
行く程浸透しておらず供試体を得ることができなかっ
た。Nos. 6, 11, and 19 are uniformly consolidated, and each is 24.5 kgf /
cm 2, 25.8kgf / cm 2, showed 28.4kgf / cm 2. On the other hand, as a control, No. 28 was solidified only near the lower surface and did not permeate toward the upper portion, so that a sample could not be obtained.
以上シリカ化合物として実施例に取りあげなかった各種
の水ガラス、ホワイトカーボン、珪酸コロイド、粉状シ
リカ、珪藻土以外のポゾラン（フライアッシュ、珪華酸
性白土、シリカフューム等）について、またアルカリ土
金属の塩化物としてマグネシウムの塩化物、苛性アルカ
リとして苛性カリを用いても同じような傾向を示す 〔発明の効果〕 以上より本発明は、シリカ化合物を固結するための硬化
剤としてアルカリ土金属の塩化物と苛性アルカリを混合
してなるアルカリ土金属の水酸化物を含有したコロイド
状懸濁液を用いるため、粒度が極めて細かくて土粒子間
に目づまりを起こさず、しかもゲル化時間が長くて浸透
性が優れ、かつ強度の高い固結体を得ることができる。Various types of water glass, white carbon, silicic acid colloid, powdered silica, pozzolans other than diatomaceous earth (fly ash, siliceous acid clay, silica fume, etc.) not mentioned in the above examples as silica compounds, and chlorides of alkaline earth metals The same tendency is exhibited when magnesium chloride is used as the caustic and caustic potash is used as the caustic alkali. [Effect of the Invention] As described above, the present invention is based on alkaline earth metal chloride Since a colloidal suspension containing an alkaline earth metal hydroxide mixed with an alkali is used, the particle size is extremely fine and does not cause clogging between soil particles, and the gelation time is long and the permeability is excellent. In addition, a solid body having high strength can be obtained.
Claims (1)
リをあらかじめ反応してなる硬化剤と、シリカ化合物と
の混合物からなる地盤固結用注入剤組成物。1. A ground consolidation injectable composition comprising a mixture of a curing agent obtained by previously reacting an alkaline earth metal chloride and caustic with a silica compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1309285A JPH0721138B2 (en) | 1989-11-30 | 1989-11-30 | Injectable composition for ground consolidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1309285A JPH0721138B2 (en) | 1989-11-30 | 1989-11-30 | Injectable composition for ground consolidation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03170596A JPH03170596A (en) | 1991-07-24 |
| JPH0721138B2 true JPH0721138B2 (en) | 1995-03-08 |
Family
ID=17991153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1309285A Expired - Fee Related JPH0721138B2 (en) | 1989-11-30 | 1989-11-30 | Injectable composition for ground consolidation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721138B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0717902B2 (en) * | 1990-02-14 | 1995-03-01 | 強化土エンジニヤリング株式会社 | Curable composition for ground injection |
| FR2697830B1 (en) * | 1992-11-12 | 1995-01-27 | Rhone Poulenc Chimie | Process for the preparation of injectable grout. |
| FR2705338B1 (en) * | 1993-05-21 | 1995-08-18 | Rhone Poulenc Chimie | Liquid grout for consolidation or sealing of floors. |
| US9022698B2 (en) | 2004-11-08 | 2015-05-05 | Terra Seal, LLC | Natural analog system for reducing permeability of ground |
| US7381014B1 (en) * | 2004-11-08 | 2008-06-03 | Bird John M | Natural analog system for reducing permeability of ground |
| JP5519148B2 (en) * | 2008-12-25 | 2014-06-11 | 電気化学工業株式会社 | Injection material and injection method using the same |
| CN103193454A (en) * | 2013-02-04 | 2013-07-10 | 陕西煤业化工建设（集团）有限公司 | Grouting material applicable to reinforcement of sand layer and grouting method |
| JP5531234B1 (en) * | 2013-02-08 | 2014-06-25 | 強化土株式会社 | Ground injection material and ground injection method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593500B2 (en) * | 1975-03-20 | 1984-01-24 | 東亞合成株式会社 | Ground stabilization method |
| JPS60124691A (en) * | 1983-12-09 | 1985-07-03 | Raito Kogyo Kk | Pouring of grout into ground |
-
1989
- 1989-11-30 JP JP1309285A patent/JPH0721138B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03170596A (en) | 1991-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |