JPH0713232B2 - Ground injection chemical - Google Patents
Ground injection chemicalInfo
- Publication number
- JPH0713232B2 JPH0713232B2 JP28188390A JP28188390A JPH0713232B2 JP H0713232 B2 JPH0713232 B2 JP H0713232B2 JP 28188390 A JP28188390 A JP 28188390A JP 28188390 A JP28188390 A JP 28188390A JP H0713232 B2 JPH0713232 B2 JP H0713232B2
- Authority
- JP
- Japan
- Prior art keywords
- water glass
- molar concentration
- metal salt
- alkali metal
- sio
- 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
- 238000002347 injection Methods 0.000 title claims description 14
- 239000007924 injection Substances 0.000 title claims description 14
- 239000000126 substance Substances 0.000 title claims description 12
- 235000019353 potassium silicate Nutrition 0.000 claims description 40
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 39
- -1 alkali metal salt Chemical class 0.000 claims description 27
- 229910052783 alkali metal Inorganic materials 0.000 claims description 22
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 21
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 13
- 150000004645 aluminates Chemical class 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 8
- 150000001340 alkali metals Chemical class 0.000 claims description 8
- 238000009472 formulation Methods 0.000 claims description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 239000004480 active ingredient Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 45
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 30
- 229910001388 sodium aluminate Inorganic materials 0.000 description 17
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 description 16
- 238000001879 gelation Methods 0.000 description 16
- 235000011121 sodium hydroxide Nutrition 0.000 description 15
- 239000000725 suspension Substances 0.000 description 10
- 239000011440 grout Substances 0.000 description 9
- 239000011734 sodium Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910001868 water Inorganic materials 0.000 description 7
- 239000011575 calcium Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 240000006909 Tilia x europaea Species 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 239000000499 gel Substances 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- IQDXNHZDRQHKEF-UHFFFAOYSA-N dialuminum;dicalcium;dioxido(oxo)silane Chemical compound [Al+3].[Al+3].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O IQDXNHZDRQHKEF-UHFFFAOYSA-N 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
- 239000000463 material Substances 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は水ガラス、アルミン酸のアルカリ金属塩および
炭酸のアルカリ土金属塩、あるいはさらに、アルカリ金
属を有するアルカリを有効成分とし、ゲル化時間が長い
にもかかわらず高強度を呈し、かつ極めて優れた浸透性
を発揮する地盤注入用薬液に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention uses water glass, an alkali metal salt of aluminate and an alkaline earth metal salt of carbonic acid, or an alkali having an alkali metal as an active ingredient, and has a gel time. The present invention relates to a chemical liquid for ground injection which exhibits high strength and exhibits extremely excellent penetrability in spite of its long length.
水ガラスをアルミン酸ソーダによってゲル化せしめるこ
とは古くから知られているが、長時間でのゲル化時間の
調整は極めて困難である上に、固結体の強度が軟弱であ
る。また、セメントを使用しない無機系の懸濁型水ガラ
スグラウトも知られている。これは水ガラスの反応剤と
して石灰を用いるものである。これら懸濁型水ガラスグ
ラウトは溶液型グラウトに比べて強度的には優れるもの
の、懸濁状であるため、たとえ微粒子状の石灰を使用し
たとしても、その浸透性には自ら限度があり、溶液型に
は到底及ばない。したがって、長時間のゲル化時間で、
しかも浸透性に優れた高強度の懸濁型の水ガラスグラウ
トが要望されている。It has long been known that water glass is gelled with sodium aluminate, but it is extremely difficult to adjust the gelation time over a long period of time, and the strength of the solidified body is weak. In addition, an inorganic suspension-type water glass grout that does not use cement is also known. This uses lime as a reaction agent for water glass. Although these suspension-type water glass grouts are superior in strength to the solution-type grouts, they are suspensions, so even if fine-grained lime is used, its permeability is limited and It is far from the type. Therefore, with a long gelation time,
Moreover, a high-strength suspension type water glass grout having excellent permeability is desired.
本発明の目的は、水ガラスとアルミン酸のアルカリ金属
塩からなるグラウトに炭酸のアルカリ土金属塩、さらに
はアルカリ金属を有するアルカリカルシウムをある範囲
内において調整配合することにより、広範囲にわたる水
ガラス、アルミン酸ソーダの使用を可能とし、かつ長い
ゲル化時間を要して懸濁状から溶液状へと徐々に移行し
ながら浸透してゆき強度的にも今までにない高強度のグ
ラウトを得る地盤注入用薬液を提供することにある。The object of the present invention is to prepare a wide range of water glass by adjusting and blending an alkaline earth metal salt of carbonic acid in a grout composed of an alkali metal salt of water glass and aluminate, and further an alkaline calcium having an alkali metal within a certain range, A ground that makes it possible to use sodium aluminate and penetrates while gradually transitioning from suspension to solution with a long gelation time and obtaining a grout of unprecedented strength. It is to provide a liquid medicine for injection.
前述の目的を達成するため、本発明の地盤注入用薬液に
よれば、水ガラス、アルミン酸のアルカリ金属塩および
炭酸のアルカリ土金属塩あるいはさらにアルカリ金属を
有するアルカリを有効成分とすることを特徴とする。In order to achieve the above-mentioned object, according to the chemical solution for ground injection of the present invention, water glass, an alkali metal salt of aluminate and an alkaline earth metal salt of carbonic acid, or an alkali having an alkali metal is further used as an active ingredient. And
上述の各成分は配合液１当り次の（Ａ）および（Ｂ）
の条件を同時に満足するように配合されることが好まし
い。The above components are the following (A) and (B)
It is preferable that they are blended so as to simultaneously satisfy the above condition.
（Ａ）水ガラスからのSiO2モル濃度が1.0モル以上、好
ましくは1.0〜3.4。(A) The molar concentration of SiO 2 from water glass is 1.0 mol or more, preferably 1.0 to 3.4.
（Ｂ）水ガラスおよびアルミン酸のアルカリ金属塩、あ
るいはさらにアルカリ金属を有するアルカリからの全Me
2Oモル濃度に対する水ガラスからのSiO2モル濃度の比が
2.5以下、好ましくは0.5〜2.5。(B) Total Me from water glass and alkali metal salts of aluminate, or alkalis with additional alkali metals
The ratio of the molar concentration of SiO 2 from water glass to the molar concentration of 2 O is
2.5 or less, preferably 0.5 to 2.5.
さらに本発明は前述の（Ａ）および（Ｂ）の条件に加え
て次の（Ｃ）および（Ｄ）の条件を同時に満足するよう
に配合されることもできる。Further, the present invention can be blended so as to simultaneously satisfy the following conditions (C) and (D) in addition to the above conditions (A) and (B).
（Ｃ）アルミン酸のアルカリ金属塩からのAl2O3モル濃
度に対する水ガラスからのSiO2モル濃度の比が５以上、
好ましくは30〜５。(C) The ratio of the molar concentration of SiO 2 from water glass to the molar concentration of Al 2 O 3 from the alkali metal salt of aluminate is 5 or more,
Preferably 30-5.
（Ｄ）炭酸のアルカリ土金属塩モル濃度が0.5モル以
上、好ましくは0.5〜1.7モル。(D) The molar concentration of the alkaline earth metal salt of carbonic acid is 0.5 mol or more, preferably 0.5 to 1.7 mol.
ここで、前述のアルミン酸のアルカリ金属塩とはアルミ
ン酸ソーダ、アルミン酸カリ等であり、さらに、炭酸の
アルカリ土金属塩とは炭酸カルシウム、炭酸マグネシウ
ム等である。また、アルカリ金属を有するアルカリとは
苛性アルカリ、アルカリ金属の炭酸塩、リン酸２アルカ
リ金属塩等であるが、特に苛性アルカリのような強アル
カリが効果的である。Here, the above-mentioned alkali metal salts of aluminate are sodium aluminate, potassium aluminate and the like, and further, the alkali earth metal salts of carbonic acid are calcium carbonate, magnesium carbonate and the like. The alkali having an alkali metal includes caustic alkali, carbonate of alkali metal, dialkali metal phosphate, etc., but strong alkali such as caustic alkali is particularly effective.
上述の本発明は如何なるモル比（SiO2のモル濃度/Na2O
のモル濃度）の水ガラス、また、如何なるモル比（Me2O
のモル濃度/Al2O3のモル濃度）のアルミン酸アルカリ金
属塩をも使用でき、長時間を要して徐々に懸濁状から溶
液状へと移行しながらゲル化に至る。したがって、その
間に徐々ではあるが、確実に地盤に浸透し、しかも溶液
型グラウトとしてはもちろん懸濁型グラウト（セメント
を除く）としても今までにない高強度のグラウトを得る
ことができる。The present invention described above can be applied to any molar ratio (molar concentration of SiO 2 / Na 2 O
Of water glass, and any molar ratio (Me 2 O
Alkali metal aluminate of (molar concentration of / molar concentration of Al 2 O 3 ) can also be used, and it takes a long time to gradually form a gelation while gradually changing from a suspension state to a solution state. Therefore, it is possible to obtain a grout having a high strength which has not yet been obtained as a solution-type grout and as a suspension-type grout (excluding cement), though it gradually penetrates into the ground.
炭酸のアルカリ土金属塩は生石灰や消石灰等の石灰類と
は異なる挙動を示す。すなわち、石灰類は水ガラスのモ
ル比SiO2/Me2Oの全ての領域でゲル化現象を起こす。一
方、炭酸のアルカリ土金属塩はモル比がほぼ１付近かあ
るいはそれ以下でないと、多量添加してもゲル化を起こ
さない。その場合、配合直後からゲル化後に至るまで懸
濁状の白濁した状態のまま白色ゲルを形成する。すなわ
ち、炭酸のアルカリ土金属塩は本来、水ガラスとは反応
しないものであるが、モル比が１付近あるいはそれ以下
の水ガラス中では、遊離の苛性ソーダの作用によってCa
（OH）２を形成し、これが水ガラスのSiO2と反応するも
のと思われる。Alkaline earth metal salts of carbonic acid behave differently from limes such as quick lime and slaked lime. That is, limes cause a gelation phenomenon in all regions where the molar ratio of water glass is SiO 2 / Me 2 O. On the other hand, the alkaline earth metal salt of carbonic acid does not cause gelation even if added in a large amount unless the molar ratio is about 1 or less. In that case, a white gel is formed in a suspended white turbid state immediately after blending until after gelation. That is, although the alkaline earth metal salt of carbonic acid originally does not react with water glass, in water glass with a molar ratio of about 1 or less, it is caused by the action of free caustic soda.
It is believed that (OH) 2 is formed, which reacts with SiO 2 of water glass.
また、石灰類はその大部分が10ミクロン以上の粒子で占
められており、このため細粒土には浸透し得ない。それ
に対して、炭酸のアルカリ土金属塩では、例えば炭酸カ
ルシウムの場合、重炭酸カルシウムと沈降炭酸カルシウ
ムとがあるが、このうち、特に沈降炭酸カルシウムはそ
のほとんどが10μ以下の粒径からなり、細粒土に対する
浸透性に優れている。また、炭酸カルシウムは水ガラス
との反応性は本質的にはないが、アルミン酸のアルカリ
金属塩、例えばアルミン酸ソーダに加えるとアルミン酸
ソーダが直ちにゲル化することからアルミン酸ソーダと
は反応性がある。ところが、本発明のように、例えば水
ガラスと、アルミン酸ソーダと、炭酸カルシウムの系で
はアルミン酸ソーダと炭酸カルシウムは直ちに反応する
ことなく、しかも、長時間を要してゲル化に至る間に徐
々に反応が進行して透明状に近い溶液状となるため、溶
液型に近い浸透性を示すようになるのである。この理由
は明らかでないが、水ガラス−アルミン酸ソーダ−炭酸
カルシウムの系が配合当初はそれぞれ遊離の状態で懸濁
状を呈しており、苛性ソーダの添加もしくは添加するこ
となく、SiO2、Na2O、Al2O3、CaCO3のある濃度範囲内で
徐々に反応が進み、何らかの可溶性の構造をもったカル
シウム・アルミニウム珪酸塩に変化して、強固なゲルを
形成するものと思われる。In addition, most of limes are occupied by particles with a size of 10 microns or more, and therefore cannot penetrate into fine-grained soil. On the other hand, in alkaline earth metal salts of carbonic acid, for example, in the case of calcium carbonate, there are calcium bicarbonate and precipitated calcium carbonate. Of these, most of the precipitated calcium carbonate has a particle size of 10 μm or less, Excellent permeability to grain soil. Also, calcium carbonate is not essentially reactive with water glass, but when added to an alkali metal salt of aluminate, such as sodium aluminate, the sodium aluminate immediately gels, so it is reactive with sodium aluminate. There is. However, as in the present invention, for example, in a system of water glass, sodium aluminate, and calcium carbonate, sodium aluminate and calcium carbonate do not react immediately, and moreover, it takes a long time to reach gelation. Since the reaction gradually progresses to form a solution that is almost transparent, it exhibits permeability that is close to that of a solution type. The reason for this is not clear, but the system of water glass-sodium aluminate-calcium carbonate is in a suspension state in a free state at the beginning of compounding, and SiO 2 , Na 2 O are added without adding caustic soda. , Al 2 O 3 and CaCO 3 within a certain concentration range, the reaction gradually progresses to form a strong gel by converting to calcium-aluminum silicate having some soluble structure.
以下、本発明を実施例によって詳述する。 Hereinafter, the present invention will be described in detail with reference to examples.
実施例 １ 〔１〕使用材料 （１）水ガラス モル比の異なる表−１に示す組成の３種類の水ガラスを
使用。Example 1 [1] Materials used (1) Water glass Three kinds of water glass having different compositions in the composition shown in Table 1 were used.
（２）アルミン酸ソーダ 次の二種類の表−２に示すアルミン酸ソーダ液を使用。 (2) Sodium aluminate The following two types of sodium aluminate solutions shown in Table 2 are used.
（３）苛性ソーダ 水酸化ナトリウム試薬一級を使用。 (3) Use caustic soda sodium hydroxide reagent first grade.
（４）炭酸カルシウム 炭酸カルシウム試薬一級を使用。(4) Calcium carbonate First grade calcium carbonate reagent is used.
〔２〕本発明にかかる水ガラス−アルミン酸ソーダ−炭
酸カルシウム−（苛性ソーダ）からなる系。[2] A system comprising water glass-sodium aluminate-calcium carbonate- (caustic soda) according to the present invention.
水ガラス、アルミン酸ソーダ、炭酸カルシウムおよび苛
性ソーダの配合順は如何なる方法でも均一に充分撹拌混
合すればよい。しかし、アルミン酸ソーダと苛性ソーダ
とは反応して沈澱を発生するため十分撹拌混合して均一
な懸濁状とすることが必要である。Water glass, sodium aluminate, calcium carbonate and caustic soda may be mixed in any order by uniformly stirring and mixing them. However, since sodium aluminate and caustic soda react with each other to generate a precipitate, it is necessary to stir and mix them sufficiently to form a uniform suspension.
以下の実施ではＡ液として水ガラス、アルミン酸ソー
ダ、苛性ソーダ、水からなる配合液800mlを、Ｂ液とし
て炭酸カルシウムの水懸濁液200mlを用いて、Ａ液とＢ
液を合流してゲル化に至らしめた。配合ならびにゲル化
時間と固結標準砂の一軸圧縮強度試験結果を表−３に一
括して示す。In the following implementation, 800 ml of a liquid mixture of water glass, sodium aluminate, caustic soda, and water was used as the A liquid, and 200 ml of an aqueous suspension of calcium carbonate was used as the B liquid.
The liquids were combined to achieve gelation. The composition, gelation time, and uniaxial compressive strength test results of consolidated standard sand are collectively shown in Table 3.
実施例 ２ 直径5cm、長さ10cmの小型コンクリートモールド中に標
準砂を充填して注入試験を行なった。 Example 2 A standard concrete sand was filled in a small concrete mold having a diameter of 5 cm and a length of 10 cm to perform an injection test.
ただし、CaCO3工業用重質炭酸カルシウムを用いた。However, CaCO 3 industrial heavy calcium carbonate was used.
配合−1:CaCO3の粒径分布はD50＝10μだった。表−３の
配合No.15. 配合−2:配合−１において、アルミン酸ソーダを加え
ず、苛性ソーダ加えをて［SiO2］W/［Na2O］＝1.41にな
るように調整する。Formulation-1: The particle size distribution of CaCO 3 was D 50 = 10μ. In Formulation No. 15 and Formulation-2: Formulation-1 of Table-3, adjust so that [SiO 2 ] W / [Na 2 O] = 1.41 by adding caustic soda without adding sodium aluminate.
配合−3:配合−２のCaCO3の代わりに同一モル濃度のCa
（OH）２を用いる。Ca（OH）２の粒径分布はD50＝15μ
だった。Recipe-3: Instead of CaCO 3 of Recipe-2, Ca of the same molar concentration
(OH) 2 is used. The particle size distribution of Ca (OH) 2 is D 50 = 15μ
was.
配合−4:表−３の配合No.20。Recipe-4: Recipe No. 20 in Table-3.
配合−5:配合−４において、アルミン酸ソーダを加え
ず、苛性ソーダを加えて［SiO2］W/［Na2O］＝1.04にな
るように調整する。Formulation-5: In Formulation-4, sodium aluminate is not added, but caustic soda is added to adjust to [SiO 2 ] W / [Na 2 O] = 1.04.
配合−6:配合−５のCaCO3の代わりに同一モル濃度のCa
（OH）２を用いる。Blending -6: Ca of the same molar concentration, instead of CaCO 3 formulations -5
(OH) 2 is used.
配合−7:表−３の配合32。Recipe-7: Recipe 32 in Table-3.
配合−8:配合−７のアルミン酸ソーダを加えず苛性ソー
ダを加えて［SiO2］W/［Na2O］＝1.07になるように調整
する。Formulation-8: Add sodium caustic soda of Formulation-7 and add caustic soda to adjust to [SiO 2 ] W / [Na 2 O] = 1.07.
配合−9:配合−８において、CaCO3の代わりに同一モル
濃度のCa（OH）２を用いる。Blending -9: in the formulation -8, using the same molar concentration of Ca (OH) 2 instead of CaCO 3.
浸透固結状況は以下のとおりであった。The situation of infiltration consolidation was as follows.
配合−５、配合−８は供試体の下半分までは浸透固結し
たが、上半分は浸透固結しなかった。配合−２は供試体
の下半分は浸透したが固結していなかった。配合−３、
配合−６、配合−９は供試体の下三分の一のみ浸透固結
したが、それより上部は浸透固結しなかった。In Formulation-5 and Formulation-8, the lower half of the test piece was permeated and solidified, but the upper half was not permeated and solidified. Formulation-2 penetrated the lower half of the test piece but did not solidify. Formulation-3,
In Formulation-6 and Formulation-9, only the lower third of the test piece permeated and solidified, but the upper part did not permeate and solidify.
配合−１、配合−４、配合−７は供試体全体が浸透固結
した。In Formulation-1, Formulation-4, and Formulation-7, the entire specimen was permeated and solidified.
次に粒径分布がD10＝0.05mm、D90＝0.15mmという標準砂
より細かい細砂を直径5cm、長さ50cmのモールド中に填
充して浸透試験を行なったところ全体が浸透固結した。Next, fine sand with a particle size distribution of D 10 = 0.05 mm, D 90 = 0.15 mm, which is finer than standard sand, was filled in a mold with a diameter of 5 cm and a length of 50 cm, and an infiltration test was carried out. .
〔３〕実施結果の考察 以上の実施結果から次のようなことがわかる。[3] Consideration of Implementation Results The following can be understood from the implementation results described above.
（１）実施No.1では［SiO2］Ｗが低く低強度である。(1) In execution No. 1, [SiO 2 ] W is low and has low strength.
（２）実施No.3ではS/N、S/Aがともに大で、ゲル化時間
が早く、SiO2が濃厚な割に低強度である。(2) In execution No. 3, both S / N and S / A are large, the gelation time is fast, and SiO 2 is concentrated, but the strength is low.
（３）実施No.9および25はS/Nが小さくて、ゲル化時間
が余りにも長すぎて強度も低い。(3) Execution Nos. 9 and 25 have low S / N, gelling time is too long, and strength is low.
（４）実施No.10はS/Aが小さくて、ゲル化時間が早すぎ
る。(4) Run No. 10 has a low S / A and gelation time is too fast.
（５）実施No.13、29、31、35、39、41はS/Aが大きすぎ
て、ゲル化時間が長すぎ、水ガラス濃度の割に低強度で
ある。(5) In Run Nos. 13, 29, 31, 35, 39, and 41, the S / A was too large, the gelation time was too long, and the strength was low relative to the water glass concentration.
（６）実施No.11はCaCO3の濃度が低く、低強度である。(6) Implementation No. 11 has a low CaCO 3 concentration and low strength.
（７）実施No.12はCaCO3の濃度が大きく、粘性が高すぎ
る感がある。(7) Execution No. 12 has a high CaCO 3 concentration, and the viscosity is too high.
（８）実施No.14、19は［SiO2］Ｗが大きく、粘性が高
すぎる感がある。(8) Execution Nos. 14 and 19 have a large [SiO 2 ] W and have a feeling that the viscosity is too high.
（９）モル比2.94の表−１のNo.1の水ガラスを使用の場
合は、ほとんどの場合、苛性ソーダの添加を必要とする
が、モル比の低いNo.2、３の水ガラスを使用の場合は必
ずしも苛性ソーダの添加を必要としない。(9) In the case of using No. 1 water glass in Table-1 with a molar ratio of 2.94, caustic soda is required in most cases, but No. 2 and 3 water glasses with a low molar ratio are used. In the case of, it is not always necessary to add caustic soda.
（10）以上の結果から、配合液１当り、 ［SiO2］Ｗ＝1.0以上、好ましくは1.0〜3.4、 S/N＝2.5以下、好ましくは0.5〜2.5、 S/A＝５以上、好ましくは30〜５、 ［CaCO3］＝0.5以上、好ましくは0.5〜1.7 の範囲内にあることが望ましく、特に ［SiO2］Ｗ＝1.5〜3.4、 S/N＝0.7〜1.7、 S/A＝27〜10、 ［CaCO3］＝0.5〜1.7 の範囲内に配合を調整した薬液（実施No.4〜６、15〜1
8、20、21、23、24、30、32、33、36、37、40、42）は
極めて優れた効果があることがわかる。(10) From the above results, [SiO 2 ] W = 1.0 or more, preferably 1.0 to 3.4, S / N = 2.5 or less, preferably 0.5 to 2.5, S / A = 5 or more, preferably 1 per formulation liquid. 30 to 5, [CaCO 3 ] = 0.5 or more, preferably 0.5 to 1.7, and particularly [SiO 2 ] W = 1.5 to 3.4, S / N = 0.7 to 1.7, S / A = 27 ~10, [CaCO 3] = 0.5~1.7 chemical solution adjusted formulation within the range of (embodiment No.4~6,15~1
8, 20, 21, 23, 24, 30, 32, 33, 36, 37, 40, 42) have extremely excellent effects.
（11）上記範囲内においては、水ガラスの懸濁型グラウ
トとして前例のない長時間（数時間）を要して確実にゲ
ル化に至り、強度的にも極めて優れていることがわか
る。(11) Within the above range, it can be seen that, as a suspension grout of water glass, it takes a long time (several hours) unprecedented to surely lead to gelation, and it is also extremely excellent in strength.
（12）水ガラス−炭酸カルシウムのみの系ではモル比が
１付近でないと固結効果がないことがわかるが、本発明
ではモル比がもっと高くても固結機能があり、アルカリ
度が少なくてすむため作業性に優れている。(12) It can be seen that the system having only water glass-calcium carbonate has no consolidation effect unless the molar ratio is close to 1. However, in the present invention, even if the molar ratio is higher, there is a consolidation function and the alkalinity is small. It has excellent workability because it can be completed.
（13）水ガラス−消石灰あるいは水ガラス−炭酸カルシ
ウムのみの系では標準砂への浸透は不充分となる。(13) In the system containing only water glass-slaked lime or water glass-calcium carbonate, the permeation into standard sand is insufficient.
（14）水ガラス−炭酸カルシウムのみの系と本発明の系
を比較すると、本発明の浸透性が優れている理由はアル
ミン酸ソーダの水ガラスや炭酸カルシウムに対する反応
性により炭酸カルシウムが浸透性のよい状態になり、そ
の結果、配合液の浸透性がよくなるものと思われる。(14) Comparing the system of the present invention with the system of water glass-calcium carbonate alone, the reason why the permeability of the present invention is excellent is that calcium carbonate has a permeability due to the reactivity of sodium aluminate with water glass and calcium carbonate. It is considered that a good condition is achieved, and as a result, the permeability of the compounded solution is improved.
（15）本発明は、配合時は懸濁状を呈するが、時間の経
過とともに溶液状へ近づき、徐々に透明なゲルへと変化
し、水中養生経過とともに強度増加も大きい。(15) In the present invention, while it is in a suspension state at the time of compounding, it approaches a solution state with the passage of time, gradually changes to a transparent gel, and the strength increases greatly with the course of underwater curing.
以上の事実から本発明にかかる地盤注入薬液は次の効果
が明らかである。From the above facts, the ground injection liquid medicine according to the present invention has the following effects.
1.配合時は懸濁状態にありながらゲル化が進むに従って
徐々に懸濁物は溶解して溶液状に近づく。長いゲル化時
間（数時間）を維持できるので、その間に溶液状に近づ
きつつ浸透していくことからして、配合時は懸濁状であ
りながら、溶液状に近い浸透効果が期待できる。1. While blending, the suspension gradually dissolves and approaches a solution as the gelation progresses while it is in a suspended state. Since a long gelation time (several hours) can be maintained, the solution permeates while approaching a solution state during that time, so that a penetrating effect close to a solution state can be expected while being a suspension state at the time of compounding.
2.固結体の強度としては前例のない高強度を示し、水中
養生経過による強度増加も大きく恒久性グラウトとして
優れることが期待できる。2. The strength of the solidified body is unprecedented and it is expected that it will be excellent as a permanent grout with a large increase in strength due to the course of underwater curing.
3.本発明の範囲内になる如く、苛性ソーダを使用または
使用することなく、配合を調整することにより、如何な
るモル比の水ガラス、また如何なるモル比のアルミン酸
ソーダをも使用することができる。3. Any molar ratio of water glass and any molar ratio of sodium aluminate can be used by adjusting the formulation with or without the use of caustic soda within the scope of the invention.
Claims (5)
よび炭酸のアルカリ土金属塩を有効成分とする地盤注入
用薬液であって、配合液１当り次の（Ａ）および
（Ｂ）の条件を同時に満足するように配合されることを
特徴とする地盤注入用薬液。 （Ａ）水ガラスからのSiO2モル濃度が1.0モル以上。 （Ｂ）水ガラスおよびアルミン酸のアルカリ金属塩から
の全Me2Oモル濃度に対する水ガラスからのSiO2モル濃度
の比が2.5以下。1. A ground injection chemical solution comprising water glass, an alkali metal salt of aluminate and an alkaline earth metal salt of carbonic acid as active ingredients, wherein the following conditions (A) and (B) per formulation solution are satisfied: A chemical liquid for ground injection, which is formulated so as to satisfy both at the same time. (A) SiO 2 molar concentration from water glass is 1.0 molar or more. (B) The ratio of the molar concentration of SiO 2 from water glass to the total molar concentration of Me 2 O from water glass and an alkali metal salt of aluminate is 2.5 or less.
て、配合液１当り前記（Ａ）および（Ｂ）の条件に加
えてさらに次の（Ｃ）および（Ｄ）の条件を同時に満足
するように配合されることを特徴とする地盤注入用薬
液。 （Ｃ）アルミン酸のアルカリ金属塩からのAl2O3モル濃
度に対する水ガラスからのSiO2モル濃度の比が５以上。 （Ｄ）炭酸のアルカリ土金属塩モル濃度が0.5モル以
上。2. The chemical solution for ground injection according to claim 1, wherein the following conditions (C) and (D) are simultaneously satisfied in addition to the conditions (A) and (B) per compounded liquid. A chemical liquid for ground injection, which is blended as described below. (C) The ratio of the molar concentration of SiO 2 from water glass to the molar concentration of Al 2 O 3 from the alkali metal salt of aluminate is 5 or more. (D) The molar concentration of carbonic acid alkaline earth metal salt is 0.5 mol or more.
炭酸のアルカリ土金属塩およびアルカリ金属を有するア
ルカリを有効成分とする地盤注入用薬液。3. Water glass, an alkali metal salt of aluminate,
A soil injection chemical solution containing an alkaline earth metal salt of carbonic acid and an alkali having an alkali metal as an active ingredient.
いて、配合液１当り次の（Ａ）および（Ｂ）の条件を
同時に満足するように配合されることを特徴とする地盤
注入用薬液。 （Ａ）水ガラスからのSiO2モル濃度が0.1モル以上。 （Ｂ）水ガラス、アルミン酸のアルカリ金属塩およびア
ルカリ金属を有するアルカリからの全Me2Oモル濃度に対
する水ガラスからのSiO2モル濃度の比が2.5以下。4. The ground injection chemical solution according to claim 3, wherein each of the mixed solutions is blended so as to simultaneously satisfy the following conditions (A) and (B). Medicinal solution. (A) SiO 2 molar concentration from water glass is 0.1 molar or more. (B) The ratio of the molar concentration of SiO 2 from water glass to the total concentration of Me 2 O from water glass, an alkali metal salt of aluminate and an alkali having an alkali metal is 2.5 or less.
いて、配合液１当り前記（Ａ）および（Ｂ）の条件に
加えてさらに次の（Ｃ）および（Ｄ）の条件を同時に満
足するように配合されることを特徴とする地盤注入用薬
液。 （Ｃ）アルミン酸のアルカリ金属塩からのAl2O3モル濃
度に対する水ガラスからのSiO2モル濃度の比が５以上。 （Ｄ）炭酸のアルカリ土金属塩モル濃度が0.5モル以
上。5. The ground injection chemical solution according to claim 4, wherein in addition to the conditions (A) and (B) per formulation solution, the following conditions (C) and (D) are simultaneously applied. A chemical liquid for ground injection, which is blended so as to satisfy the requirement. (C) The ratio of the molar concentration of SiO 2 from water glass to the molar concentration of Al 2 O 3 from the alkali metal salt of aluminate is 5 or more. (D) The molar concentration of carbonic acid alkaline earth metal salt is 0.5 mol or more.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28188390A JPH0713232B2 (en) | 1990-10-22 | 1990-10-22 | Ground injection chemical |
| TW81102894A TW205079B (en) | 1990-10-22 | 1992-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28188390A JPH0713232B2 (en) | 1990-10-22 | 1990-10-22 | Ground injection chemical |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04159389A JPH04159389A (en) | 1992-06-02 |
| JPH0713232B2 true JPH0713232B2 (en) | 1995-02-15 |
Family
ID=17645299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28188390A Expired - Fee Related JPH0713232B2 (en) | 1990-10-22 | 1990-10-22 | Ground injection chemical |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0713232B2 (en) |
| TW (1) | TW205079B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2697830B1 (en) * | 1992-11-12 | 1995-01-27 | Rhone Poulenc Chimie | Process for the preparation of injectable grout. |
-
1990
- 1990-10-22 JP JP28188390A patent/JPH0713232B2/en not_active Expired - Fee Related
-
1992
- 1992-04-14 TW TW81102894A patent/TW205079B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04159389A (en) | 1992-06-02 |
| TW205079B (en) | 1993-05-01 |
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