JPH01201390A - Grout for ground - Google Patents
Grout for groundInfo
- Publication number
- JPH01201390A JPH01201390A JP2388688A JP2388688A JPH01201390A JP H01201390 A JPH01201390 A JP H01201390A JP 2388688 A JP2388688 A JP 2388688A JP 2388688 A JP2388688 A JP 2388688A JP H01201390 A JPH01201390 A JP H01201390A
- Authority
- JP
- Japan
- Prior art keywords
- alkali metal
- acid
- metal salt
- dihydrogen phosphate
- ground
- 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.)
- Pending
Links
- 239000011440 grout Substances 0.000 title description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 20
- -1 alkali metal salt Chemical class 0.000 claims abstract description 20
- 239000000376 reactant Substances 0.000 claims abstract description 19
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 15
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 28
- 239000007864 aqueous solution Substances 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 abstract description 12
- 229910000030 sodium bicarbonate Inorganic materials 0.000 abstract description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 3
- 238000007596 consolidation process Methods 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract description 3
- HFNQLYDPNAZRCH-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O.OC(O)=O HFNQLYDPNAZRCH-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 238000001879 gelation Methods 0.000 description 14
- 239000007789 gas Substances 0.000 description 13
- 239000001569 carbon dioxide Substances 0.000 description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 8
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 7
- 235000019799 monosodium phosphate Nutrition 0.000 description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 description 6
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 102100027368 Histone H1.3 Human genes 0.000 description 1
- 101001009450 Homo sapiens Histone H1.3 Proteins 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 159000000011 group IA salts Chemical class 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 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
- 238000000034 method Methods 0.000 description 1
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical compound [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は軟弱地盤あるいは漏水地盤に注入して地盤の固
結あるいは止水に利用する地盤注入用薬液に係り、特に
非アルカリ性珪酸水溶液を用い、完全な溶液型で、かつ
ゲル化時間の調整を容易にした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 that is injected into soft ground or leaky ground and used for solidifying the ground or stopping water, and in particular, it relates to a chemical solution for ground injection that is used to solidify the ground or stop water. , relates to a chemical solution for ground injection that is completely solution type and whose gelation time can be easily adjusted.
地盤注入用薬液として、酸性液と水ガラスを混合してＰ
Ｈ１〜３の非アルカリ性珪酸水溶液を調整し、この水溶
液に水ガラス、炭酸水素ナトリウム、炭酸ナトリウム等
の可溶性アルカリ剤を添加してゲル化せしめる形式のも
のは、ゲル化時間が短く、瞬結性グラウトとして使用に
供されており、比較的長いゲル化時間を維持することは
困難である。また、これらの可溶性アルカリ剤に換えて
、炭酸カルシウム、炭酸マグネシウム等の難溶性アルカ
リ剤を使用すると、ゲル化時間は比較的制御しやすくな
り、長いゲル化時間を維持することも可能であるが、不
溶物が発生混在するために取扱い上、また地盤への浸透
性に関して問題がある。Mix acidic liquid and water glass as a chemical solution for ground injection.
H1-3 non-alkaline silicic acid aqueous solutions are prepared and gelled by adding water glass, sodium bicarbonate, sodium carbonate, or other soluble alkaline agents to the aqueous solutions, which have short gelation times and instant setting properties. It is used as a grout, and it is difficult to maintain a relatively long gelation time. Furthermore, if a poorly soluble alkali agent such as calcium carbonate or magnesium carbonate is used instead of these soluble alkali agents, the gelation time can be controlled relatively easily and it is possible to maintain a long gelation time. , there are problems in handling and infiltration into the ground due to the presence of insoluble matter.
さらに前述の炭酸水素塩、あるいは炭酸塩は可溶性、難
溶性の如何にかかわらず、非アルカリ性珪酸水溶液との
混合に際して多量の炭酸ガスを発生し、この気泡が固結
物中に残存して固結物の強度を低下せしめるという欠点
もある。Furthermore, regardless of whether the above-mentioned hydrogen carbonate or carbonate is soluble or slightly soluble, it generates a large amount of carbon dioxide gas when mixed with a non-alkaline silicic acid aqueous solution, and these bubbles remain in the solidified material and solidify. It also has the disadvantage of reducing the strength of the object.
本発明の目的は上記の問題点を解決せんとするものであ
って、非アルカリ性珪酸水溶液のゲル化にあたり、瞬結
状態ではなくて比較的長いゲル化時間での調整を容易に
し、かつ完全な）古漬型のグラウトとして、浸透性を良
好にし、さらに炭酸ガスの発生も極力減少あるいは皆無
な状態にして固結強度の強化をはかる地盤注入用薬液を
提供することにある。An object of the present invention is to solve the above-mentioned problems, and the purpose of the present invention is to facilitate gelling of a non-alkaline silicic acid aqueous solution with a relatively long gelling time rather than an instantaneous setting state, and to achieve complete gelling. ) It is an object of the present invention to provide a chemical solution for ground injection, which is used as an old pickle type grout and has good permeability, and furthermore, the generation of carbon dioxide gas is minimized or eliminated to strengthen the consolidation strength.
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に炭酸
水素または炭酸のアルカリ金属塩とリン酸二水素の°フ
ルカリ金属塩との混合水溶液からなる反応剤を添加混合
することを特徴とする。In order to achieve the aforementioned object, according to the present invention, a non-alkaline aqueous silicic acid solution obtained by treating water glass with an acid is mixed with an alkali metal salt of hydrogen carbonate or carbonic acid and an alkali metal salt of dihydrogen phosphate. It is characterized by adding and mixing a reactant consisting of an aqueous solution.
本発明に用いられる非アルカリ性珪酸水溶液は、水ガラ
スを酸で処理して水ガラス中のアルカリを除去してえら
れ、例えば硫酸等の酸性液に水ガラスを強制的に攪拌混
合しながら添加することにより調整され、通常ＰＨ１〜
３の強酸性を呈する。The non-alkaline silicic acid aqueous solution used in the present invention is obtained by treating water glass with an acid to remove the alkali in the water glass. For example, the water glass is added to an acidic liquid such as sulfuric acid while forcibly stirring and mixing. It is adjusted by
It exhibits strong acidity of 3.
また、炭酸水素のアルカリ金属塩としては炭酸水素ナト
リウム、炭酸水素カリウム、炭酸のアルカリ金属塩とし
ては炭酸ナトリウム、炭酸カリウムをあげることができ
、さらに、リン酸二水素のアルカリ金属塩としてはリン
酸二水素ナトリウム、リン酸二水素カリウムをあげるこ
とができる。In addition, examples of alkali metal salts of hydrogen carbonate include sodium hydrogen carbonate and potassium hydrogen carbonate; examples of alkali metal salts of carbonic acid include sodium carbonate and potassium carbonate; and examples of alkali metal salts of dihydrogen phosphate include phosphoric acid. Examples include sodium dihydrogen and potassium dihydrogen phosphate.
上述の本発明において、非アルカリ性珪酸水溶液と反応
剤（混合液）との混合は、混合容器で行うほかに両液の
合流で行ってもよい。さらに本発明は二重管を用い、一
方の管路から非アルカリ性珪酸水溶液を送液し、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
ルカリ剤を送液し、注入管先端部でこれらを合流して瞬
結性グラウトとして注入し、その後本発明に係る反応剤
に切り替えてゲル化時間の長い浸透性グラウトとして注
入することにより複合注入工法の薬液として利用するこ
ともできる。In the present invention described above, the non-alkaline silicic acid aqueous solution and the reactant (mixed liquid) may be mixed in a mixing container or may be carried out by combining the two liquids. Furthermore, the present invention uses a double pipe, in which a non-alkaline silicic acid aqueous solution is delivered from one pipe, water glass, alkaline salt, cement, and other alkaline agents are delivered from the other pipe, and the tip of the injection pipe is By combining these and injecting them as instant setting grout, and then switching to the reactant according to the present invention and injecting them as permeable grout with a long gelation time, it can also be used as a chemical solution in the composite injection method.
本発明は前述のとおり、非アルカリ性珪酸水溶液の反応
剤として炭酸水素または炭酸のアルカリ金属塩とリン酸
二水素のアルカリ金属塩の混合液を用いるから、炭酸水
素または炭酸アルカリ金属塩等の可溶性アルカリ剤の単
独使用による欠点を改良し、比較的長いゲル化時間の調
整が可能となる。As described above, the present invention uses a mixture of hydrogen carbonate or an alkali metal salt of carbonate and an alkali metal salt of dihydrogen phosphate as a reactant for a non-alkaline aqueous silicic acid solution. This improves the drawbacks caused by using a single agent, and makes it possible to adjust a relatively long gelation time.
また、前記混合液は炭酸水素または炭酸のアルカリ金属
塩とリン酸二水素のアルカリ金属塩を混合調整する際に
炭酸ガスを発生しつくし、この混合液を非アルカリ性珪
酸水溶液に合流する際に炭酸ガスの発生は著しく減少し
、あるいは皆無となる。したがって、本発明地盤注入用
薬液は固結の際に炭酸ガスによる気泡が固結物中に生じ
ることがなく、固結物の強度が大となる。In addition, when the mixed liquid is mixed and adjusted with hydrogen carbonate or an alkali metal salt of carbonic acid and an alkali metal salt of dihydrogen phosphate, carbon dioxide gas is generated completely, and when this mixed liquid is combined with a non-alkaline silicic acid aqueous solution, carbon dioxide gas is generated. Gas generation is significantly reduced or eliminated. Therefore, the chemical solution for ground injection of the present invention does not generate bubbles due to carbon dioxide gas during consolidation, and the strength of the consolidated product increases.
さらに、本発明は完全に溶液型であって、沈澱を生ぜず
、したがって地盤中への浸透性が良好となる。Furthermore, the present invention is completely solution-based and does not produce precipitation, thus providing good penetration into the ground.
非アルカリ性珪酸水溶液として表−１に示した配合のも
のを使用した。The non-alkaline silicic acid aqueous solution having the composition shown in Table 1 was used.
表−１
反応剤として表−２に示す１３種類の配合のものを使用
する。Table 1 Thirteen types of formulations shown in Table 2 are used as reactants.
表−１の非アルカリ性珪酸水溶液をＡ液として、これに
Ｂ液として表−２の反応剤と水との混合液を合流した時
のゲル化時間と炭酸ガス発生状況を表−３ならびに第１
図ならびに第２図に示す０図中■〜０は表−２の反応剤
の番号を表す。Table 3 and 1 show the gelation time and carbon dioxide gas generation status when the non-alkaline silicic acid aqueous solution in Table 1 was used as liquid A, and the mixed liquid of the reactant and water in Table 2 was combined as liquid B.
0 in the figure and Figure 2 represent the numbers of the reactants in Table-2.
第１図ならびに表−３から明らかなように、対照の炭酸
水素ナトリウムのみの■に対して、リン酸二水素ナトリ
ウムを添加していった■、■、■、■、■、■、■、■
、にい（に従って長いゲル化時間で安定し、炭酸ガスの
発生も減少或いは皆無となる。また、第２図および表−
３から明白なように、対照の炭酸ナトリウムのみの［相
］に対して、リン酸二水素ナトリウムを添加していった
■、■、■についても同様の傾向を示す。As is clear from Figure 1 and Table 3, when sodium dihydrogen phosphate was added to the control ■ containing only sodium hydrogen carbonate, ■, ■, ■, ■, ■, ■, ■, ■
, Ni (according to the gelation time), it becomes stable with a long gelation time, and the generation of carbon dioxide gas is reduced or eliminated. Also, Fig. 2 and Table -
As is clear from 3, the same tendency is shown in cases 1, 2, and 3 in which sodium dihydrogen phosphate is added to the control [phase] containing only sodium carbonate.
反応剤■、■のようにリン酸二水素ナトリウム量が少な
い場合は、成程度炭酸ガスを発生し、また、反応剤■、
０のようにリン酸二水素ナトリウム層が非常に多い場合
は、炭酸ガスの発生は全（なく、ゲル化時間は安定化す
るが、長くなりすぎるきらいがみられる。従って、本発
明にかかる反応剤は対照の炭酸水素ナトリウム、炭酸ナ
トリウム単独の場合に比べて比較的長いゲル化時間の調
整が容易となり、また炭酸ガスの発生は減少或いは皆無
となる効果を発揮するが、好ましくは炭酸水素ナトリウ
ムまたは炭酸ナトリウムに対するリン酸二水素ナトリウ
ムの混合比が規定濃度比で１：０．５〜７の範囲である
ことがわかる。When the amount of sodium dihydrogen phosphate is small as in reactants ■ and ■, a certain amount of carbon dioxide gas is generated, and reactants ■ and
When the sodium dihydrogen phosphate layer is very large as in Example 0, no carbon dioxide gas is generated and the gelation time is stabilized, but it tends to become too long.Therefore, the reaction according to the present invention The agent makes it easier to adjust the relatively long gelation time compared to the control sodium bicarbonate or the case of sodium carbonate alone, and also exhibits the effect of reducing or eliminating the generation of carbon dioxide gas, but sodium bicarbonate is preferable. Alternatively, it can be seen that the mixing ratio of sodium dihydrogen phosphate to sodium carbonate is in the range of 1:0.5 to 7 in terms of the specified concentration ratio.
次にこれらのグラウトを使用して標準砂によるサンドゲ
ルを作成して塩化ビニリデン類のフィルム状色装密封養
生した一軸圧縮強度を測定した結果を表−４に示す。Next, using these grouts, sand gels were prepared from standard sand, and the unconfined compressive strengths of the gels were sealed and cured with a vinylidene chloride film color, and the results are shown in Table 4.
表−４
表−４において、対照の反応剤■、［相］の場合は、炭
酸ガスの発生が激しいため他の反応剤の場合に比べて強
度は劣る。これに対して反応剤■、■、■、■、■、■
、■の場合はいずれも強度が優れていることがわかる。Table 4 In Table 4, in the case of the control reactant ①, [phase], the strength is inferior to that of the other reactants due to the intense generation of carbon dioxide gas. In contrast, the reactants ■, ■, ■, ■, ■, ■
It can be seen that the strength is excellent in both cases of , ■.
この中で、番号■、■、■の反応剤の場合には強度が特
に優れていることがわかる。Among these, it can be seen that the reactants numbered ``■'', ``■'', and ``■'' have particularly excellent strength.
このように強度の点からみても、炭酸水素ナトリウムま
たは炭酸ナトリウムと、リン酸二水素ナトリウムとの併
用からなる反応剤は優れており、特にこれらの混合比が
規定濃度比で１ ： ０．５〜７の範囲内のものは非常
に優れていることがわかる。In this way, from the point of view of strength, a reactant consisting of a combination of sodium bicarbonate or sodium carbonate and sodium dihydrogen phosphate is excellent, especially when the mixing ratio of these is 1:0.5 in terms of the specified concentration ratio. It can be seen that those within the range of 7 to 7 are very excellent.
なお、前述において、炭酸水素、炭酸、リン酸二水素の
アルカリ金属塩として何れもナトリウム塩をとりあげた
が、カリウム塩でも同じ傾向を示すのは勿論であり、又
これらの併用使用も同様な傾向を示すことも勿論である
。In addition, in the above, sodium salts were used as the alkali metal salts of hydrogen carbonate, carbonic acid, and dihydrogen phosphate, but it goes without saying that potassium salts show the same tendency, and the use of these in combination also shows the same tendency. Of course, it is also possible to show.
以上のとおり、本発明に係る薬剤は非アルカリ性珪酸水
溶液のゲル化に炭酸水素、または炭酸のアルカリ金属塩
とリン酸二水素のアルカリ金属塩との混合物からなる水
溶液を使用するもので、比較的長いゲル化時間の調整が
容易であり、合流的に炭酸ガスの発生を著しく減少また
は皆無の状態にするため、固結体の強度が大きい。さら
に完全な溶液型であるため地盤への浸透に優れることが
期待できる。炭酸水素または炭酸のアルカリ金属塩とリ
ン酸二水素のアルカリ金属塩の規定濃度比がｔ：Ｏ，Ｓ
〜７の範囲内では特に前述効果が著しい。As described above, the agent according to the present invention uses an aqueous solution consisting of hydrogen carbonate or a mixture of an alkali metal salt of carbonic acid and an alkali metal salt of dihydrogen phosphate to gel a non-alkaline silicic acid aqueous solution, and is relatively It is easy to adjust the long gelation time, and the generation of carbon dioxide gas is significantly reduced or eliminated, so the strength of the solid body is high. Furthermore, since it is a complete solution type, it can be expected to have excellent penetration into the ground. The specified concentration ratio of the alkali metal salt of hydrogen carbonate or carbonic acid and the alkali metal salt of dihydrogen phosphate is t:O,S
The above-mentioned effect is particularly remarkable within the range of 7 to 7.
第１図および第２図はいずれも反応剤の添加量とゲル化
時間との関係を表したグラフである。
図中、■〜０はいずれも表−２の反応剤を示す。
特許出願人 強化土エンジニャリング株式会社昭和６３
年７月メ日
特許庁長官 吉 １） 文 毅 殴１、事件の表示
昭和６３年特許願第２３８８６号
２、発明の名称
地盤注入用集材
３、補正をする者
事件との関係 特許出願人
住所 東京都文京区本郷３−３−１お茶の水ＫＳビル
名称 強化土エンジニャリング株式会社４、代理人
６、補正により増加する発明の数 な し７、補正の
対象 明細書の「発明の詳細な説明」の欄。
８、ｆｉ正の内容Both FIG. 1 and FIG. 2 are graphs showing the relationship between the amount of reactant added and the gelation time. In the figure, ■ to 0 all indicate the reactants in Table-2. Patent applicant: Reinforced Soil Engineering Co., Ltd. 1986
Director General of the Japanese Patent Office in July 2017 Yoshi 1) Moon Takeshi 1, Indication of the case Patent Application No. 23886 of 1988 2, Title of the invention 3, Person making the amendment Relationship with the case Patent applicant Address: Ochanomizu KS Building, 3-3-1 Hongo, Bunkyo-ku, Tokyo Name: Reinforced Earth Engineering Co., Ltd. 4, Agent: 6 Number of inventions to be increased by amendment: None 7, Subject of amendment "Description" column. 8.Fi positive content
Claims (2)
酸水溶液に、炭酸水素または炭酸のアルカリ金属塩とリ
ン酸二水素のアルカリ金属塩の混合液からなる反応剤を
合流してなる地盤注入用薬液。(1) Ground injection made by combining a non-alkaline silicic acid aqueous solution obtained by treating water glass with an acid and a reactant consisting of a mixture of hydrogen carbonate or an alkali metal salt of carbonate and an alkali metal salt of dihydrogen phosphate. Medicinal liquid for use.
酸水素または炭酸のアルカリ金属塩とリン酸二水素のア
ルカリ金属塩との混合比が規定濃度比で１：０．５〜７
である地盤注入用薬液。(2) In the chemical solution for ground injection according to claim 1, the mixing ratio of the alkali metal salt of hydrogen carbonate or carbonic acid and the alkali metal salt of dihydrogen phosphate is 1:0.5 to 7 in terms of specified concentration ratio.
A chemical solution for ground injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2388688A JPH01201390A (en) | 1988-02-05 | 1988-02-05 | Grout for ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2388688A JPH01201390A (en) | 1988-02-05 | 1988-02-05 | Grout for ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01201390A true JPH01201390A (en) | 1989-08-14 |
Family
ID=12122931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2388688A Pending JPH01201390A (en) | 1988-02-05 | 1988-02-05 | Grout for ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01201390A (en) |
-
1988
- 1988-02-05 JP JP2388688A patent/JPH01201390A/en active Pending
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