JPS62290790A - Grout for injection into ground - Google Patents
Grout for injection into groundInfo
- Publication number
- JPS62290790A JPS62290790A JP13371686A JP13371686A JPS62290790A JP S62290790 A JPS62290790 A JP S62290790A JP 13371686 A JP13371686 A JP 13371686A JP 13371686 A JP13371686 A JP 13371686A JP S62290790 A JPS62290790 A JP S62290790A
- Authority
- JP
- Japan
- Prior art keywords
- calcium
- alkaline
- gelation
- magnesium
- gelation time
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims description 14
- 239000007924 injection Substances 0.000 title claims description 14
- 239000011440 grout Substances 0.000 title abstract description 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 17
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 7
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 6
- 159000000003 magnesium salts Chemical class 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims abstract description 5
- 239000007864 aqueous solution Substances 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 7
- 238000001879 gelation Methods 0.000 abstract description 27
- 230000002378 acidificating effect Effects 0.000 abstract description 9
- 230000007935 neutral effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 2
- 239000001506 calcium phosphate Substances 0.000 abstract description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 abstract description 2
- 235000011010 calcium phosphates Nutrition 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 abstract description 2
- 239000004137 magnesium phosphate Substances 0.000 abstract description 2
- 229910000157 magnesium phosphate Inorganic materials 0.000 abstract description 2
- 229960002261 magnesium phosphate Drugs 0.000 abstract description 2
- 235000010994 magnesium phosphates Nutrition 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 abstract 1
- 229940075110 dibasic magnesium phosphate Drugs 0.000 abstract 1
- 235000019700 dicalcium phosphate Nutrition 0.000 abstract 1
- 229940095079 dicalcium phosphate anhydrous Drugs 0.000 abstract 1
- MHJAJDCZWVHCPF-UHFFFAOYSA-L dimagnesium phosphate Chemical compound [Mg+2].OP([O-])([O-])=O MHJAJDCZWVHCPF-UHFFFAOYSA-L 0.000 abstract 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- JUNWLZAGQLJVLR-UHFFFAOYSA-J calcium diphosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])(=O)OP([O-])([O-])=O JUNWLZAGQLJVLR-UHFFFAOYSA-J 0.000 description 5
- 229910000393 dicalcium diphosphate Inorganic materials 0.000 description 5
- 235000019821 dicalcium diphosphate Nutrition 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 235000021317 phosphate Nutrition 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- XZTWHWHGBBCSMX-UHFFFAOYSA-J dimagnesium;phosphonato phosphate Chemical compound [Mg+2].[Mg+2].[O-]P([O-])(=O)OP([O-])([O-])=O XZTWHWHGBBCSMX-UHFFFAOYSA-J 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical group 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000318 alkali metal phosphate Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- -1 calcium diphosphate dimagnesium diphosphate Chemical compound 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000001177 diphosphate Substances 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical class [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 159000000011 group IA salts Chemical class 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
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229940045641 monobasic sodium phosphate Drugs 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔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あるいは止水に用
いられる非アルカリ性珪酸水溶液を用いた地盤注入用薬
液に係り、特にゲル化時間の調整が容易であって固結物
が中性で、かつ高強度を呈する地盤注入用薬液に関する
。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a chemical solution for ground injection using a non-alkaline silicic acid aqueous solution used to solidify or stop water in soft or leaky ground, and in particular to adjustment of gelation time. The present invention relates to a chemical solution for ground injection that is easy to prepare, has a neutral solidified substance, and exhibits high strength.
非アルカリ性珪酸水溶液は水ガラスと酸を混合して水ガ
ラス中のアルカリを除去して得られるもので、通常は酸
性液と水ガラス水溶液を噴射あるいは強制的に攪拌混合
することにより調製され、ｐＨ１〜３の強酸性珪酸水溶
液である。A non-alkaline silicic acid aqueous solution is obtained by mixing water glass and an acid to remove the alkali in the water glass.It is usually prepared by spraying or forcibly stirring and mixing the acidic liquid and the water glass aqueous solution, and the pH is 1. -3 strongly acidic silicic acid aqueous solution.
この非アルカリ性珪酸水溶液を地盤注入用薬液として用
いる場合、これはゲル化時間が長いので、通常、この水
溶液にアルカリ性促進剤を添加混合し、ゲル化を促進せ
しめて用いられる。このアルカリ性促進剤として従来、
水ガラス液、苛性アルカリ、炭酸塩９重炭酸塩等が用い
られている。When this non-alkaline silicic acid aqueous solution is used as a chemical solution for ground injection, since it takes a long time to gel, an alkaline accelerator is usually added to the aqueous solution to promote gelation. Conventionally, as this alkaline accelerator,
Water glass liquid, caustic alkali, carbonate 9 bicarbonate, etc. are used.
又、ゲル化時間をゆるやかにするために、炭酸カルシウ
ム、炭酸マグネシウム、水酸化カルシウム、水酸化マグ
ネシウム等の難溶性アルカリ剤を用いる方法も知られて
いる。Also known is a method of using a sparingly soluble alkali agent such as calcium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide, etc. in order to slow down the gelation time.
しかし、前者の方法では、このような従来のアルカリ性
促進剤の僅かな量的変化に対してゲル化時間が大幅に変
動するため、ゲル化時間の調整が非常に困難である。However, in the former method, it is very difficult to adjust the gelation time because the gelation time varies greatly in response to such a slight quantitative change in the conventional alkaline accelerator.
また、後者の方法では、難溶性アルカリ剤の添加量が多
くなるとゲル化時間が大巾に短縮し、かつゲル化物はア
ルカリ性を呈するという欠点があった。又炭酸塩を用い
た場合、炭酸ガスを発生して固結物がポーラスになり、
強度が弱くなるという欠点があった。In addition, the latter method has the disadvantage that when the amount of the sparingly soluble alkaline agent added increases, the gelation time is significantly shortened and the gelled product exhibits alkalinity. In addition, when carbonate is used, carbon dioxide gas is generated and the solidified material becomes porous.
The drawback was that the strength was weakened.
本発明の目的は、前述の公知技術に存する欠点を改良し
たもので、特に長いゲル化時間の調整が容易であるとと
もに固結体が中性領域において高強度を呈するような地
盤注入用薬液を提供することにある。The object of the present invention is to improve the drawbacks of the above-mentioned known techniques, and to provide a chemical solution for ground injection that is particularly easy to adjust for a long gelation time and that allows the solidified body to exhibit high strength in the neutral region. It is about providing.
前述の目的を達成するため、本発明によれば、水ガラス
を酸で処理して得られる非アルカリ性珪酸水溶液と、リ
ン酸のカルシウム塩またはマグネシウム塩とを含有して
なることを特徴とする。In order to achieve the above object, the present invention is characterized in that it contains a non-alkaline silicic acid aqueous solution obtained by treating water glass with an acid, and a calcium salt or magnesium salt of phosphoric acid.
本発明に用いられる非アルカリ性珪酸水溶液は水ガラス
水溶液と酸を混合して水ガラス中のアルカリを除去して
得られるものであり、通常はｐＨ１〜３の強酸性を呈す
るものである。The non-alkaline silicic acid aqueous solution used in the present invention is obtained by mixing a water glass aqueous solution and an acid to remove the alkali in the water glass, and usually exhibits strong acidity with a pH of 1 to 3.
本発明に用いるリン酸塩は、第一、第二、第三等のリン
酸のカルシウム塩、またはマグネシウム塩である事が必
要であって、その他の塩例えば、第一、第二、第三リン
酸塩ナトリウム等のリン酸アルカリ金属塩では本発明の
効果は得られない。The phosphate used in the present invention must be a calcium salt or a magnesium salt of primary, secondary, or tertiary phosphoric acid; The effects of the present invention cannot be obtained with alkali metal phosphates such as sodium phosphate.
第三リン酸ナトリウム、第ニリン酸ナトリウムはアルカ
リ性を呈し、添加量ゲル化時間曲線は他のアルカリ剤に
くらべればゆるやかであるが添加量が多くなればゲル化
時間が数十秒以内になってしまう。Sodium triphosphate and sodium diphosphate exhibit alkalinity, and the gelation time curve of the added amount is gentler than that of other alkaline agents, but as the amount added increases, the gelation time decreases to within tens of seconds. Put it away.
又第一リン酸ナトリウムは酸性を呈し、これは非アルカ
リ性珪酸水溶液中に加えてもゲル化促進作用はあまり生
じない。In addition, monobasic sodium phosphate exhibits acidity, and even when added to a non-alkaline silicic acid aqueous solution, it does not significantly promote gelation.
これに対し、本発明にかかるリン酸カルシウム、または
マグネシウム、特に第ニリン酸カルシウム。In contrast, calcium or magnesium phosphate, in particular calcium diphosphate, according to the invention.
第ニリン酸マグネシウムは僅かに水溶性で中性から微酸
性を呈しているにもかかわらず非アルカリ性珪酸水溶液
のゲル化促進効果を有し、しかも多量に加えても、ゲル
化時間は数十分あるいは十数分収下よりも短縮しないと
いう大きな特徴を有している。Although magnesium diphosphate is slightly water-soluble and exhibits neutral to slightly acidic properties, it has the effect of promoting gelation of non-alkaline silicic acid aqueous solutions, and even when added in large amounts, the gelation time is several tens of minutes. It also has the great feature that it does not shorten more than 10 minutes or less.
この理由はカルシウムイオン又はマグネシウムイオンが
ゲル化促進作用を有し、かつその水溶液のｐＨ値が中性
から微酸性であることからゲル化曲線の傾斜を極めてゆ
るやかにし、しかもゲル化時間をある時間以内には短縮
させないという効果を生じ、さらにゲル化物のｐｉｔ値
を弱酸性から中性に保ちアルカリ領域には達せしめない
というきわめて特異な効果を生じさせるものと思われ、
このような効果は本出願人によってはじめて発見された
ものである。The reason for this is that calcium ions or magnesium ions have a gelation-promoting effect, and the pH value of the aqueous solution is neutral to slightly acidic, so the slope of the gelation curve is extremely gentle, and the gelation time is It is believed that this has the effect of not shortening the gel within the range of 100 to 100%, and also has the very unique effect of keeping the pit value of the gel from weakly acidic to neutral and preventing it from reaching the alkaline range.
This effect was first discovered by the applicant.
以下、本発明を第ニリン酸カルシウムを用いて説明する
。Hereinafter, the present invention will be explained using calcium diphosphate.
実験−１
表−１に示した配合により非アルカリ性珪酸水溶液を作
製した。Experiment-1 A non-alkaline silicic acid aqueous solution was prepared according to the formulation shown in Table-1.
表−１
実験−２
実験−１の非アルカリ性珪酸水溶液（１）、（２１５０
ｃｃをそれぞれ用意し、これらをＡ液とした。Table-1 Experiment-2 Non-alkaline silicic acid aqueous solution (1) of Experiment-1, (2150
cc were prepared, and these were used as liquid A.
さらに第ニリン酸カルシウム量を変化させてそれぞれ水
で５０ｃｃの懸濁液とし、これをＢ液とした。Further, the amount of calcium diphosphate was varied and each suspension was made into a 50 cc suspension with water, which was designated as Solution B.
これらＡ液およびＢ液を合流し、合流液についてゲル化
時間とｐＨを測定し、結果を第１図および第２図のグラ
フに示した。These solutions A and B were combined, and the gelation time and pH of the combined solution were measured, and the results are shown in the graphs of FIGS. 1 and 2.
図中、曲線Ａは合流直後のｐＨを、曲線Ｂはゲル化して
１日経過した後の固結体のｐＨを示す。In the figure, curve A shows the pH immediately after confluence, and curve B shows the pH of the solidified body one day after gelation.
第１図および第２図から、注入に最も適したゲル化時間
である数十分から数分の範囲において、安定したゲル化
時間を得ることがわかる。また、合流液は合流直後、曲
線Ａのとおり酸性乃至弱酸性のｐＨ値を呈するが、ゲル
化後は曲線Ｂのとおり、ｐＨ５乃至中性を呈し、本発明
薬液はほとんど無公害グラウトであることがわかる。It can be seen from FIGS. 1 and 2 that a stable gelation time can be obtained in the range of several tens of minutes to several minutes, which is the most suitable gelation time for injection. In addition, the combined liquid exhibits an acidic to slightly acidic pH value as shown in curve A immediately after the confluence, but after gelation, as shown in curve B, it exhibits a pH of 5 to neutral, which means that the chemical solution of the present invention is almost pollution-free grout. I understand.
この結果より、本発明ではきわめて安定した長いゲル化
時間の調整が可能であり、またＡ液・Ｂ液の吐出量のば
らつきによる注入操作の誤差や配合誤差があってもゲル
化時間の変動の少い注入が可能となる事が判る。From this result, it is possible to adjust an extremely stable long gelation time with the present invention, and even if there is an error in the injection operation or a mixing error due to variations in the discharge amount of liquids A and B, fluctuations in the gelation time can be suppressed. It can be seen that a small amount of injection is possible.
実験−３
比較のために種々の添加剤を用いた実験の例を表−２に
示す。Experiment 3 Table 2 shows examples of experiments using various additives for comparison.
表−２
（温度１８〜２０℃）
表−２の結果から本発明に係る第ニリン酸カル −シ
ウム、第ニリン酸マグネシウムの場合（配合隘１５〜２
０）は他の添加剤に比べて、添加量によ ゛るゲル化
時間の変動が極めて少く安定化している −ことがわ
かる。Table 2 (Temperature 18 to 20°C) From the results in Table 2, in the case of calcium diphosphate and magnesium diphosphate according to the present invention (composition range 15 to 2
It can be seen that, compared to other additives, the gelation time of 0) has extremely little variation depending on the amount added and is stable.
実験−４１
表−２の配合液を標準砂と混合して固結せしめた、固結
標準砂の一軸圧縮強度を表−３に示す。Experiment 41 Table 3 shows the unconfined compressive strength of consolidated standard sand, which was obtained by mixing the blended solution in Table 2 with standard sand and consolidating it.
表−３す
る
表−３の結果から表−２の配合番号１６．１９（本発明
）の第ニリン酸カルシウム２第ニリン酸マグネシウムの
場合は他の場合に比べ高い強度を １斥していること
がわかる。From the results in Table 3, it can be seen that the calcium diphosphate dimagnesium diphosphate of combination number 16.19 (invention) in Table 2 has a higher strength than other cases. Recognize.
なお、本発明にかかるリン酸のカルシウム塩。In addition, the calcium salt of phosphoric acid according to the present invention.
ングネシウム塩は第ニリン酸塩に限らず第一、第三リン
酸塩においてもはパ同様な結果が得られる。Similar results can be obtained with ngnesium salts, not only with diphosphates but also with primary and tertiary phosphates.
また、第一、第二および第三リン酸塩は互いに洋用して
用いてもよい。Furthermore, primary, secondary and tertiary phosphates may be used interchangeably.
なお、本発明にかかる薬液を実際に地盤中に注（するに
当って、例えば水ガラスと酸を混合してｌられた、ｐＨ
が３以下の非アルカリ性珪酸水溶液二前記リン酸塩を添
加混合し、この混合物を地盤−に注入することはもちろ
んのこと、前記非アル５り性珪酸水溶液にリン酸塩水溶
液を合流して注（することもできる。（合流液のｐＨ値
は酸性でも、ビルカリ性でも、中性でもよい。）
さらに、例えば二重注入管を用い、一方の管路）１ら非
アルカリ性珪酸水溶液あるいはこれにリン変温を含む混
合物を送液し、他方の管路から水ガラス、アルカリ性塩
、セメント、その他のアルカノ類を送液し、注入管、先
端部でこれらを合流して輝粘性グラウトとして注入し、
その後リン酸塩水溶液あるいはこれに塩やアルカリ性促
進剤を配合し、この配合液を前記非アルカリ性珪酸水溶
液の注入系統の任意の個所で合流して、ゲル化時間の長
い浸透性グラウトとして注入し、本発明薬液を複合注入
工法の薬液として利用することもできる。In addition, when actually pouring the chemical solution according to the present invention into the ground, for example, the pH
Of course, it is possible to add and mix the above-mentioned phosphate with a non-alkaline aqueous silicic acid solution having an alkali of 3 or less, and to inject this mixture into the ground. (The pH value of the combined liquid may be acidic, bilcalicic, or neutral.) Furthermore, for example, by using a double injection pipe, one pipe may be used. A mixture containing phosphorus is delivered, and water glass, alkaline salts, cement, and other alkanoids are delivered from the other pipe, and these are combined at the tip of the injection pipe and injected as bright viscous grout. ,
Thereafter, a phosphate aqueous solution or a salt or an alkaline accelerator are mixed therein, and this mixed solution is combined at any point in the injection system of the non-alkaline silicic acid aqueous solution and injected as a permeable grout with a long gelling time, The chemical solution of the present invention can also be used as a chemical solution for a composite injection method.
以上のとおり本発明にかかる地盤注入用薬液は非アルカ
リ性珪酸水溶液と、リン酸のカルシウム塩又はマグネシ
ウム塩を含有してなるから長時間のゲル化時間領域の調
整が容易であるとともに固結強度が大きく、地下水のｐ
Ｈも大きく変化せしめることなく実用上有用な薬液であ
る。As described above, since the chemical solution for ground injection according to the present invention contains a non-alkaline silicic acid aqueous solution and a calcium salt or magnesium salt of phosphoric acid, it is easy to adjust the long gelation time range and the consolidation strength is high. large, groundwater p
It is a practically useful chemical solution without significantly changing H.
第１図および第２図は非アルカリ性珪酸水溶液と対する
第ニリン酸カルシウムの添加量と、それに対応したｐ）
Ｉおよびゲル化時間の変化を表わしたグラフである。
写１０Figures 1 and 2 show the amount of calcium diphosphate added to the non-alkaline silicic acid aqueous solution and the corresponding p)
1 is a graph showing changes in I and gelation time. Picture 10
Claims (1)
液と、リン酸のカルシウム塩又はマグネシウム塩とを含
有してなる地盤注入用薬液。A chemical liquid for ground injection containing a non-alkaline silicic acid aqueous solution obtained by treating water glass with an acid and a calcium salt or magnesium salt of phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133716A JPH0643582B2 (en) | 1986-06-11 | 1986-06-11 | Ground injection chemical |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133716A JPH0643582B2 (en) | 1986-06-11 | 1986-06-11 | Ground injection chemical |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62290790A true JPS62290790A (en) | 1987-12-17 |
| JPH0643582B2 JPH0643582B2 (en) | 1994-06-08 |
Family
ID=15111232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61133716A Expired - Lifetime JPH0643582B2 (en) | 1986-06-11 | 1986-06-11 | Ground injection chemical |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643582B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6363785A (en) * | 1986-09-05 | 1988-03-22 | Kyokado Eng Co Ltd | Grout for ground |
| JP2001348572A (en) * | 2000-06-07 | 2001-12-18 | Nagoya Cullet Kk | Method of solidifying ground foundation |
| JP2002155279A (en) * | 2000-11-22 | 2002-05-28 | Nagoya Cullet Kk | Method for hardening ground |
| JP2003531798A (en) * | 2000-04-28 | 2003-10-28 | ブレント アール． コンスタンツ， | Calcium phosphate cement prepared from silicate solution |
| US7776413B2 (en) | 2002-09-10 | 2010-08-17 | Yupo Corporation | Melt thermal transfer recording paper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52126912A (en) * | 1976-04-19 | 1977-10-25 | Kyokado Eng Co | Method of stabilizing poor subsoil |
| JPS5473407A (en) * | 1977-11-22 | 1979-06-12 | Central Glass Co Ltd | Injection agent for eliminating subsoil pollution |
| JPS59124986A (en) * | 1982-12-31 | 1984-07-19 | Kyokado Eng Co Ltd | Solidification of ground |
-
1986
- 1986-06-11 JP JP61133716A patent/JPH0643582B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52126912A (en) * | 1976-04-19 | 1977-10-25 | Kyokado Eng Co | Method of stabilizing poor subsoil |
| JPS5473407A (en) * | 1977-11-22 | 1979-06-12 | Central Glass Co Ltd | Injection agent for eliminating subsoil pollution |
| JPS59124986A (en) * | 1982-12-31 | 1984-07-19 | Kyokado Eng Co Ltd | Solidification of ground |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6363785A (en) * | 1986-09-05 | 1988-03-22 | Kyokado Eng Co Ltd | Grout for ground |
| JPH0587554B2 (en) * | 1986-09-05 | 1993-12-17 | Kyokado Eng Co | |
| JP2003531798A (en) * | 2000-04-28 | 2003-10-28 | ブレント アール． コンスタンツ， | Calcium phosphate cement prepared from silicate solution |
| JP2001348572A (en) * | 2000-06-07 | 2001-12-18 | Nagoya Cullet Kk | Method of solidifying ground foundation |
| JP4507355B2 (en) * | 2000-06-07 | 2010-07-21 | 名古屋カレット株式会社 | Ground hardening method |
| JP2002155279A (en) * | 2000-11-22 | 2002-05-28 | Nagoya Cullet Kk | Method for hardening ground |
| JP4507393B2 (en) * | 2000-11-22 | 2010-07-21 | 名古屋カレット株式会社 | Ground hardening method |
| US7776413B2 (en) | 2002-09-10 | 2010-08-17 | Yupo Corporation | Melt thermal transfer recording paper |
| US8268415B2 (en) | 2002-09-10 | 2012-09-18 | Yupo Corporation | Melt thermal transfer recording paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0643582B2 (en) | 1994-06-08 |
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