JP3205900B2 - Grout material for ground injection - Google Patents
Grout material for ground injectionInfo
- Publication number
- JP3205900B2 JP3205900B2 JP36253197A JP36253197A JP3205900B2 JP 3205900 B2 JP3205900 B2 JP 3205900B2 JP 36253197 A JP36253197 A JP 36253197A JP 36253197 A JP36253197 A JP 36253197A JP 3205900 B2 JP3205900 B2 JP 3205900B2
- Authority
- JP
- Japan
- Prior art keywords
- water glass
- silicic acid
- strength
- sio
- colloidal silica
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水ガラスを陽イオン
交換樹脂で処理して得られる活性珪酸を主成分として含
有する活性珪酸系の地盤注入用グラウト材に係り、特
に、固結後に高固結強度を呈するとともに、固結体の耐
久性および環境保全性にも優れた地盤注入用グラウト材
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an activated silicate-based grouting material containing active silica as a main component, obtained by treating water glass with a cation exchange resin. The present invention relates to a grouting material for ground injection which exhibits binding strength and also has excellent durability and environmental preservation properties of a consolidated body.
【０００２】[0002]
【従来の技術】水ガラス系グラウトとして従来、水ガラ
スそのものを主成分としたグラウト、酸性シリカゾルを
主成分としたグラウト、コロイダルシリカを主成分とし
たグラウト、水ガラスを陽イオン交換樹脂で処理して得
られる活性珪酸を主成分としたグラウト等が知られてい
る。2. Description of the Related Art Conventionally, as a water glass-based grout, a grout mainly containing water glass itself, a grout mainly containing acidic silica sol, a grout mainly containing colloidal silica, and water glass are treated with a cation exchange resin. Grout containing active silicic acid obtained as a main component is known.
【０００３】[0003]
【発明が解決しようとする課題】このうち、水ガラスを
陽イオン交換樹脂で処理して得られる活性珪酸は陽イオ
ン交換樹脂表面のＨイオンと水ガラスのナトリウムイオ
ンが置換反応を起こしてアルカリ分が除去されるためｐ
Ｈが２〜４になってしまう。この際、水ガラス濃度を高
めると、水ガラスが陽イオン交換樹脂を通過する際に、
ゲル化を起こしてしまう。このゲル化を防ぐためには、
濃度の低い水ガラス水溶液を用いなければならず、この
ため、ＳｉＯ2 濃度が低くなって高強度のゲルは得られ
なくなる。Among these, active silicic acid obtained by treating water glass with a cation exchange resin is characterized in that H ions on the surface of the cation exchange resin and sodium ions of the water glass undergo a substitution reaction to cause alkali content. Is removed because p
H becomes 2-4. At this time, if the water glass concentration is increased, when the water glass passes through the cation exchange resin,
It causes gelation. To prevent this gelation,
An aqueous solution of water glass having a low concentration must be used, so that the concentration of SiO 2 becomes low and a gel having high strength cannot be obtained.
【０００４】そこで、本発明の目的は高固結強度を呈す
るとともに長いゲル化時間を得、しかも固結体の耐久性
および環境保全性にも優れ、上述の公知技術に存する欠
点を改良した地盤注入用グラウト材を提供することにあ
る。Accordingly, an object of the present invention is to provide a ground having a high compaction strength, a long gelation time, excellent durability of a compacted body and excellent environmental preservation, and an improvement over the above-mentioned disadvantages of the prior art. It is to provide a grout material for injection.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
め、本発明によれば、水ガラスを陽イオン交換樹脂で処
理して得られる活性珪酸と、コロイダルシリカとを有効
成分として含み、酸性ないしは中性領域のｐＨ値を呈し
てなることを特徴とする。According to the present invention, an active silicic acid obtained by treating water glass with a cation exchange resin and colloidal silica are effectively used to achieve the above object.
Contained as an ingredient , exhibits pH values in the acidic or neutral range
It is characterized by becoming .
【０００６】[0006]
【発明の実施の形態】以下、本発明を具体的に詳述す
る。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
【０００７】本発明に用いられる活性珪酸は上述のとお
り、水ガラスを陽イオン交換樹脂で処理して得られ、実
質的に塩を含まず、通常、ｐＨ値２〜４を呈する。ここ
で用いられる水ガラスはいかなるモル比のものでもよい
が、実用的にはＪＩＳ３号水ガラスあるいはモル比４付
近の高モル比水ガラスである。なお、この水ガラスの代
わりに珪酸カリ、珪酸アンミニウム等の水溶性珪酸塩を
用いることもできる。As described above, the active silicic acid used in the present invention is obtained by treating water glass with a cation exchange resin, contains substantially no salt, and usually has a pH value of 2 to 4. The water glass used here may have any molar ratio, but is practically JIS No. 3 water glass or a high molar ratio water glass having a molar ratio of around 4. Note that a water-soluble silicate such as potassium silicate or ammonium silicate can be used instead of the water glass.
【０００８】上述の活性珪酸が陽イオン交換樹脂を通過
の際にゲル化しないで得られる活性珪酸はＳｉＯ2 濃度
１０％以下、好ましくは２〜６％の液体であって、Ｓｉ
Ｏ2濃度、ｐＨ、温度等を適当に調整することにより、
約１〜３日間はゲル化することなく安定化される。した
がって、グラウト材の原料として比較的長期間にわたっ
て安定して使用される。The activated silicic acid obtained without gelling the above-mentioned activated silicic acid when passing through a cation exchange resin is a liquid having a SiO 2 concentration of 10% or less, preferably 2 to 6%,
By appropriately adjusting the O 2 concentration, pH, temperature, etc.,
It is stabilized without gelling for about 1 to 3 days. Therefore, it is used stably for a relatively long time as a raw material of the grout material.
【０００９】このような活性珪酸は上述のとおり、それ
自体遅かれ早かれゲル化するが酸性であるため、これに
アルカリ剤や塩類あるいは酸を反応剤として添加するこ
とによりゲル化時間を調整することができる。また、こ
の活性珪酸は上述のとおり、アルカリを除去して得られ
るため、シリカゲルの解重合を起こしにくく、このた
め、生成されたゲルは安定性や、耐久性に優れる。As described above, such an active silicic acid itself gels sooner or later, but is acidic. Therefore, it is possible to adjust the gelation time by adding an alkali agent, a salt or an acid as a reactant thereto. it can. Further, since the activated silicic acid is obtained by removing the alkali as described above, the depolymerization of the silica gel hardly occurs, and therefore, the generated gel is excellent in stability and durability.
【００１０】しかし、上述活性珪酸は製造中にゲル化し
ないように、あるいは工場から現場に運搬時にゲル化し
ないように、また、注入作業中にもゲル化しないよう
に、さらに、浸透が充分に行われるように、充分なゲル
化時間を有することが必要であり、このためには、希薄
な水ガラス水溶液を用いて製造されなければならない。
濃い水ガラスを用いたのでは、水ガラスを陽イオン交換
樹脂中に通過処理する間に水ガラスがゲル化してしまう
からである。However, the above-mentioned activated silicic acid does not gel during production, does not gel during transportation from the factory to the site, and does not gel during the injection operation, and furthermore, has sufficient penetration. As is done, it is necessary to have a sufficient gelling time, for which it has to be manufactured with a dilute aqueous water glass solution.
This is because the use of dark water glass causes the water glass to gel during the passage of the water glass through the cation exchange resin.
【００１１】このようにして、活性珪酸は通常、シリカ
分の高い濃度のものは得られず、したがって、これを用
いた注入工法では、高強度のゲルは期待できない。As described above, the active silicic acid generally does not have a high silica content, and therefore, a high-strength gel cannot be expected by the injection method using the same.
【００１２】本発明はこのような活性珪酸に存する欠点
を解決するものであって、活性珪酸に次の物質を併用し
て目的を達成するものである。[0012] The present invention has been made to solve the drawbacks existing in this active silicic acid, it is to achieve the object in combination the following things electrolyte to the active silicic acid.
【００１３】コロイダルシリカを併用コロイダルシリカ
とは水ガラスをイオン交換樹脂に通過し、得られる活性
珪酸水溶液を加熱等によって数万あるいはそれ以上の分
子量に縮合安定化し、２０〜３０％のＳｉＯ2 濃度に濃
縮したものである。[0013] The colloidal silica combination of colloidal silica through the water glass to an ion exchange resin, condensation stabilized tens of thousands or more of molecular weight by heating or the like of the active silicic acid solution obtained, 20-30% of SiO 2 concentration It is concentrated.
【００１４】このコロイダルシリカは通常、ｐＨ値が中
性ないしは１０付近の弱アルカリ性を呈するが、酸や酸
性塩を添加することにより酸性を呈するようにすること
もできる。The colloidal silica usually exhibits a weak alkaline property at a pH value of about neutral or around 10, but may be made acidic by adding an acid or an acid salt.
【００１５】このようなコロイダルシリカを活性珪酸と
混合して酸性乃至ほぼ中性領域のｐＨ値を呈するように
調整することにより、ゲル化時間が長いにもかかわらず
固結体の強度が増強され、かつゲル収縮が減少されたグ
ラウト材を得ることができる。By mixing such colloidal silica with active silicic acid to adjust the pH value to an acidic to almost neutral range, the strength of the consolidated body is enhanced despite the long gelation time. A grout material having reduced gel shrinkage can be obtained.
【００１６】なお、上述のコロイダルシリカと活性珪酸
の混合物（グラウト材）にはさらに反応剤を含有せしめ
ることもできる。The mixture (grout material) of the above-mentioned colloidal silica and active silicic acid may further contain a reactant.
【００１７】この反応剤として、例えば、酸類、塩類、
カルシウムまたはマグネシウムの炭酸塩、水酸化物、ヘ
キサメタリン酸ソーダ等の金属封鎖剤、セメントやスラ
グ類等が挙げられる。The reactants include, for example, acids, salts,
Examples thereof include calcium or magnesium carbonates, hydroxides, sequestering agents such as sodium hexametaphosphate, cement and slags.
【００１８】これら反応剤はコロイダルシリカと活性珪
酸の混合物中に添加してもよく、あるいはこれらを混合
する前に、これらのいずれかにあらかじめ添加すること
もできる。These reactants may be added to the mixture of colloidal silica and active silicic acid, or may be added to any of them before mixing them.
【００１９】上述反応剤の添加量は活性珪酸もコロイダ
ルシリカも実質的に塩を含まないため、通常の水ガラス
−反応剤系グラウトへの添加量よりも少ない量である。Since the active silicic acid and the colloidal silica do not substantially contain salts, the amount of the above-mentioned reactant is smaller than the amount added to the ordinary water glass-reactant grout.
【００２０】活性珪酸にコロイダルシリカを併用するこ
とにより強度増加が達成される理由はコロイダルシリカ
の主成分がＳｉＯ 2 であるため、混合物中のＳｉＯ 2 濃
度が増大し、かつコロイダルシリカの大きなシリカ粒子
間に活性珪酸に起因する小さなシリカ粒子が充填され、
しかも、この活性珪酸が極めて反応性に富み、コロイダ
ルシリカ同志を強固に連結するものと思われる。 The use of colloidal silica in combination with activated silicic acid
The reason that the strength increase is achieved by colloidal silica
Is mainly composed of SiO 2 , so that the SiO 2 concentration in the mixture is high.
Large silica particles with increased degree of colloidal silica
In between, small silica particles caused by active silicic acid are filled,
Moreover, this activated silicic acid is extremely reactive and
It seems that Lusilica is strongly connected.
【０【００２１】例えば、活性珪酸およびコロイダルシ
リカの併用物と、同一ＳｉＯ 2 濃度のコロイダルシリカ
とを比較すると、併用物は特に固結体の初期強度が著し
く増大し、最終強度も大きくなる。しかも、この場合、
混合物中の濃度が増大するにもかかわらず、ゲル化時間
は大幅に短縮することがなく、充分な浸透時間が確保さ
れる。 For example, activated silicic acid and colloidal
Rica combination and colloidal silica with same SiO 2 concentration
In comparison, the combination showed a particularly high initial strength of the consolidated body.
And the final strength also increases. And in this case,
Gelation time despite increasing concentration in the mixture
Is not significantly reduced, ensuring sufficient penetration time
It is.
【００２２】このような本発明グラウト材は単独では充
分な長さのゲル化時間を得ることができない高ＳｉＯ2
濃度の活性珪酸でも充分なゲル化時間を得ることがで
き、あるいは低濃度のＳｉＯ2 の活性珪酸のＳｉＯ2 を
高めてかつ長くゲル化時間を得ることができ、また、同
一ＳｉＯ2 濃度の活性珪酸と比較すると、長期固結強度
が大幅に増加し、ゲルの収縮も小さい。The high SiO 2 to the present invention grout can not get the gel time long enough alone
Possible to obtain sufficient gel time even at a concentration of the active silicic acid, or a low density and to increase the SiO 2 of SiO 2 of active silicic acid in the longer it is possible to obtain a gel time, also, the same SiO 2 concentration of the active Compared with silicic acid, the long-term consolidation strength is greatly increased, and the shrinkage of the gel is small.
【００２３】さらに、本発明グラウト材はゲル化物から
の塩の溶出が少なく、かつ、ｐＨ値が酸性からほぼ中性
の領域にあるので、従来の水ガラスグラウトのようなア
ルカリ公害はなく、水質保全性、環境保全性にも優れて
いる。Further, since the grout material of the present invention has little elution of salt from the gelled material and has a pH value in a range from acidic to almost neutral, it does not have alkaline pollution as in the conventional water glass grout, and has a high water quality. Excellent in maintainability and environmental preservation.
【００２４】[0024]
【発明の実施例】以下、本発明を実施例によって詳述す
るが、本発明はこれらの実施例に限定されるものではな
い。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples.
【００２５】使用材料 １．水ガラス 比重（２０℃）：1.３９、ＳｉＯ2 ：２9.０％のＪＩＳ
３号水ガラスを使用。Materials used 1. Water glass JIS with specific gravity (20 ° C): 1.39, SiO 2 : 29.0%
Use No. 3 water glass.
【００２６】２．活性珪酸 １7.５％の水ガラス水溶液を陽イオン交換樹脂で処理し
て得られるｐＨ：2.７、比重（２０℃）：1.０３、Ｓｉ
Ｏ2 ：5.０％の活性珪酸を使用。この活性珪酸は室温で
のゲル化に1.５〜２日を要した。2. Activated silicic acid 17.5% aqueous glass solution treated with cation exchange resin, pH: 2.7, specific gravity (20 ° C): 1.03, Si
O 2 : 5.0% active silicic acid is used. This activated silicic acid took 1.5 to 2 days to gel at room temperature.
【００２７】３．コロイダルシリカ 陽イオン交換樹脂で処理した水ガラス水溶液にアルカリ
を添加し、加熱して縮合安定化せしめ、濃縮した無水珪
酸の膠質溶液であって、ＳｉＯ2 ：約３０％、Ｎａ
2 Ｏ：0.７％以下、比重（２０℃）：1.２１〜1.２２、
ｐＨ：９〜１０の物性を有するコロイダルシリカを使
用。3. Adding an alkali to the water glass solution treated with colloidal silica cation exchange resin and heated brought condensation stabilized, a colloid solution of concentrated anhydrous silicic acid, SiO 2: about 30%, Na
2 O: 0.7% or less, specific gravity (20 ° C.): 1.21 to 1.22,
Colloidal silica having physical properties of pH: 9 to 10 is used.
【００２８】４．酸性シリカゾル 水ガラス−硫酸系であって、ｐＨ：1.８、ＳｉＯ2 ：8.
９％、ゲル化時間：約５０時間の酸性シリカゾルを使
用。4. Acidic silica sol water glass - a sulfuric acid, pH: 1.8, SiO 2: 8.
9%, gelling time: about 50 hours using acidic silica sol.
【００２９】５．反応剤 （１）硫酸水素ナトリウム 試薬一級、ＮａＨＳＯ4 ・Ｈ2 Ｏ 5 . Reactants (1) Sodium hydrogen sulfate First grade reagent, NaHSO 4 · H 2 O
【００３０】（２）塩化ナトリウム 試薬一級、ＮａＣｌ(2) Sodium chloride Reagent primary, NaCl
【００３１】（３）炭酸水素ナトリウム 試薬一級、ＮａＨＣＯ3 (3) Sodium bicarbonate reagent primary grade, NaHCO 3
【００３２】（４）炭酸ナトリウム 無水炭酸ナトリウム、試薬一級、Ｎａ2 ＣＯ3 (4) Sodium carbonate Anhydrous sodium carbonate, reagent primary, Na 2 CO 3
【００３３】（５）硫酸アルミニウム 試薬一級、Ａｌ2(ＳＯ4)3 ・１６〜１８Ｈ2 Ｏ(5) Aluminum sulfate reagent primary grade, Al 2 (SO 4 ) 3 .16-18H 2 O
【００３４】（６）２０％水酸化ナトリウム水溶液 水酸化ナトリウム（試薬一級）を水に溶解した２０％水
溶液。(6) 20% aqueous solution of sodium hydroxide A 20% aqueous solution of sodium hydroxide (primary reagent) dissolved in water.
【００３５】（７）１０％硫酸水溶液 ７５％工業用硫酸を水で稀釈した１０％水溶液。(7) 10% sulfuric acid aqueous solution A 10% aqueous solution obtained by diluting 75% industrial sulfuric acid with water.
【００３６】本発明にかかるグラウト材の配合例とその
物性を本発明以外のグラウト材と比較して表１に一括し
て示す。Table 1 shows the composition examples of the grout material according to the present invention and the physical properties thereof in comparison with grout materials other than the present invention.
【００３７】表１中、ＳｉＯ2 は各実施例あるいは比較
例における活性珪酸、水ガラス、コロイダルシリカまた
は酸性シリカゾル中のＳｉＯ2 合計量を配合液中の％で
表示した。ｐＨ値はガラス電極ｐＨ計で測定し、ゲル化
時間はカップ倒立法により測定した。一軸圧縮強度は豊
浦標準砂によるサンドゲルをポリ塩化ビニリデン密閉養
生して、土質工学会規準の「土の一軸圧縮試験方法」に
より測定した。ホモゲルの収縮率（％）はポリプロピレ
ン樹脂製の密閉容器中にホモゲルを２０℃の温度で５日
間放置して生じた離漿水の量から算出した。[0037] In Table 1, SiO 2 was expressed active silicic in each example or comparative example, water glass, a SiO 2 the total amount of colloidal silica or an acidic silica sol in% in formulation solution. The pH value was measured with a glass electrode pH meter, and the gel time was measured by a cup inverted method. The unconfined compressive strength was measured according to the "Unconfined Compression Test Method of Soil" of the Japan Society of Geotechnical Engineers by sealing and curing a sand gel of Toyoura standard sand with polyvinylidene chloride . Shrinkage homo gel (%) was calculated from the amount of the resulting release漿水by the Homogeru in a sealed container made of a polypropylene resin was allowed to stand for 5 days at a temperature of 20 ° C..
【００３８】[0038]
【表１】 [Table 1]
【００３９】表１より次のことがわかる。通常の水ガラ
スとその硬化剤とからなる系（比較例No.1）では長期
（３０日）強度の方が初期（１日）強度より低い。ま
た、酸性シリカゾルと水ガラスからなる系（比較例No.
2）では比較例No.1より若干の強度増加はあるものの、
依然として低く、また、長期強度も初期強度も殆ど変わ
らない。The following can be seen from Table 1. In a system composed of ordinary water glass and its hardener (Comparative Example No. 1), the long-term (30 days) strength is lower than the initial (1 day) strength. In addition, a system composed of acidic silica sol and water glass (Comparative Example No.
In 2), although there is a slight increase in strength compared to Comparative Example No. 1,
It is still low, and the long-term strength and the initial strength hardly change.
【００４０】活性珪酸またはコロイダルシリカと通常の
反応剤からなる系（比較例No.3〜５）では初期強度に比
べ、長期強度に優れるが、全般に比較的低強度である。In a system comprising active silicic acid or colloidal silica and a usual reactant (Comparative Examples Nos. 3 to 5), the long-term strength is superior to the initial strength, but the strength is generally relatively low.
【００４１】これに比べて、活性珪酸を中心として、こ
れにコロイダルシリカあるいはさらに反応剤を加えて酸
性からほぼ中性の領域に配合した本発明にかかわる、実
施例No.1〜５では全般に高い強度を示し、特に、長期強
度に優れ、かつホモゲルの収縮も少ない。 On the other hand, the active silicic acid
Add colloidal silica or further reactants to the acid
Of the present invention blended in the neutral to almost neutral range.
Examples Nos. 1 to 5 show high strength in general, especially long-term strength.
Excellent degree of homogeneity and low shrinkage of homogel.
【００４２】従来の水ガラス−反応剤の系からなる比較
例No.1と本発明にかかる実施例No.3〜５、６との反応剤
の量を比べると、ＳｉＯ2 濃度、ｐＨの差や反応剤の種
類にもよるが、本発明の系では非常に少量でよいことが
示される。When the amounts of the reactants in Comparative Example No. 1 comprising the conventional water glass-reactant system and Examples Nos. 3 to 5 and 6 according to the present invention were compared, the difference in SiO 2 concentration and pH was found. It is shown that very small amounts are sufficient in the system of the present invention, depending on the type of the reactants and the reactants.
【００４３】このことは本発明の配合では、一般にＳｉ
Ｏ2 量を多くすることが容易であることに起因するよう
である。また、実施例No.3と比較例No.2の比較におい
て、ＳｉＯ2 量は略同量であるが、ゲル化時間は実施例
３の方がはるかに遅い。それにもかかわらず、実施例N
o.3の方が強固で収縮性も少ない。This means that in the formulation of the present invention, Si
This seems to be due to the fact that it is easy to increase the amount of O 2 . In addition, in the comparison between Example No. 3 and Comparative Example No. 2, the amount of SiO 2 is substantially the same, but the gelation time of Example 3 is much slower. Nevertheless, Example N
o.3 is stronger and has less shrinkage.
【００４４】以上のとおり、本発明では、ゲル化時間は
数分から数時間に及び、その調整が容易である。As described above, in the present invention, the gelation time ranges from several minutes to several hours, and the adjustment is easy.
【００４５】本発明では、ｐＨは全て酸性からほぼ中性
領域にあり、通常の水ガラス系グラウト（比較例No.1）
のような強アルカリを呈することはなく、したがって、
本発明は環境保全面からも好ましい。In the present invention, the pH values are all in the acidic to almost neutral range, and are usually water-glass grouts (Comparative Example No. 1).
Does not exhibit a strong alkali like
The present invention is also preferable from the viewpoint of environmental protection.
【００４６】[0046]
【発明の効果】以上のとおり、水ガラスを陽イオン交換
樹脂で処理して得られた活性珪酸をベースとして、これ
にコロイダルシリカあるいはさらに反応剤を添加して酸
性からほぼ中性の領域に調整した地盤注入用グラウト材
は次の効果を奏し得るものである。As described above, according to the present invention, a water glass as a base and the resulting active silicic acid by treatment with a cation exchange resin, to which colloidal silica Kaa Rui is further added reactant substantially acidic to neutral Grout material for ground injection adjusted to the area
Are those can achieve the following effects.
【００４７】１．従来の水ガラス系グラウト材に比べ、
同程度のＳｉＯ2 濃度でも本発明のグラウトは高強度を
示す。1. Compared to conventional water glass grout,
The grout of the present invention exhibits high strength even at the same SiO 2 concentration.
【００４８】２．さらに、ＳｉＯ2 濃度を濃厚にし、し
かも長いゲル化時間を得ることができるので一層の強度
増強と浸透性が可能となる。2. Further, since the SiO 2 concentration can be increased and a long gelation time can be obtained, the strength can be further increased and the permeability can be increased.
【００４９】３．従来の水ガラス系グラウトよりも収縮
が少ない。3. Less shrinkage than conventional water glass grout.
【００５０】４．したがって、本発明は優れた耐久性を
示し、広範囲にわたるゲル化時間の調整が容易である。4. Therefore, the present invention shows excellent durability, and it is easy to adjust the gel time over a wide range.
【００５１】５．また、本発明は酸性からほぼ中性領域
を示し、かつ、ゲル化物からの塩の溶出量が少ないた
め、水質保全性、環境保全性に優れる。5. In addition, the present invention exhibits an acidic to almost neutral region and a small amount of salt eluted from the gelled product, so that it is excellent in water quality conservation and environmental conservation.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｃ０４Ｂ 111:70 Ｃ０９Ｋ 103:00 (56)参考文献 特開 昭60−144382（ＪＰ，Ａ) 特開 昭60−20992（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C09K 17/00 - 17/52 C04B 28/00 - 28/36 E02D 3/00 - 3/12 ──────────────────────────────────────────────────続 き Continuation of front page (51) Int.Cl. 7 Identification symbol FI // C04B 111: 70 C09K 103: 00 (56) References JP-A-60-144382 (JP, A) JP-A-60-20992 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) C09K 17/00-17/52 C04B 28/00-28/36 E02D 3/00-3/12
Claims (1)
得られる活性珪酸と、コロイダルシリカとを有効成分と
して含み、酸性乃至中性領域のｐＨ値を呈してなる地盤
注入用グラウト材。1. A grouting material for ground injection comprising an active silicic acid obtained by treating water glass with a cation exchange resin and colloidal silica as active ingredients and exhibiting a pH value in an acidic to neutral range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36253197A JP3205900B2 (en) | 1997-12-15 | 1997-12-15 | Grout material for ground injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36253197A JP3205900B2 (en) | 1997-12-15 | 1997-12-15 | Grout material for ground injection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11172248A JPH11172248A (en) | 1999-06-29 |
| JP3205900B2 true JP3205900B2 (en) | 2001-09-04 |
Family
ID=18477095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36253197A Expired - Fee Related JP3205900B2 (en) | 1997-12-15 | 1997-12-15 | Grout material for ground injection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3205900B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011161978A1 (en) | 2010-06-25 | 2011-12-29 | 電気化学工業株式会社 | Injection material, process for production of injection material, and injection method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5015193B2 (en) * | 2009-04-30 | 2012-08-29 | 強化土株式会社 | Ground injection material and ground injection method |
| JP4955123B2 (en) * | 2011-11-28 | 2012-06-20 | 強化土株式会社 | Ground injection material and ground injection method |
| JP6183678B2 (en) * | 2012-09-27 | 2017-08-23 | 株式会社大林組 | Solution type grout and grout method using the same |
| JP7326384B2 (en) * | 2021-06-23 | 2023-08-15 | 花王株式会社 | Ground improvement method |
-
1997
- 1997-12-15 JP JP36253197A patent/JP3205900B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011161978A1 (en) | 2010-06-25 | 2011-12-29 | 電気化学工業株式会社 | Injection material, process for production of injection material, and injection method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11172248A (en) | 1999-06-29 |
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