JP2000328056A - Ground hardening method - Google Patents
Ground hardening methodInfo
- Publication number
- JP2000328056A JP2000328056A JP2000071411A JP2000071411A JP2000328056A JP 2000328056 A JP2000328056 A JP 2000328056A JP 2000071411 A JP2000071411 A JP 2000071411A JP 2000071411 A JP2000071411 A JP 2000071411A JP 2000328056 A JP2000328056 A JP 2000328056A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- water glass
- aqueous solution
- sulfuric acid
- injected
- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は地盤硬化法に関す
る。地盤の強化及び止水を図るため、地盤中に薬液を混
合注入して該地盤を硬化させることが行なわれる。本発
明はかかる地盤硬化法の改良に関する。[0001] The present invention relates to a soil hardening method. In order to strengthen the ground and stop water, a chemical solution is mixed and injected into the ground to harden the ground. The present invention relates to an improvement in such a ground hardening method.
【０００２】[0002]
【従来の技術】従来、上記のような地盤硬化法として一
般に、地盤中に酸性シリカゾルとアルカリ剤の水溶液と
を混合注入することが行なわれている。この場合の酸性
シリカゾルは水ガラスに通常は硫酸を加えてｐＨ２未満
とした水分散液であり、またアルカリ剤として通常は水
酸化マグネシウムや水酸化カルシウム等のアルカリ土類
金属の水酸化物が使用されている（特公平３−２４５１
５）。しかし、この従来法には、劇物である硫酸を多量
に使用するため、その取扱いが誠に厄介であり、また結
果として好ましくない硫酸根を地盤中へ多量に持ち込む
ことになるという問題がある。しかもその上、水ガラス
に硫酸を加えてｐＨ２未満とした強酸性のシリカゾル
に、水酸化マグネシウムや水酸化カルシウム等の強アル
カリ剤の水溶液を混合するため、混合後における薬液全
体のｐＨが振れ易く、地盤中に注入した水ガラスのゲル
化に要する時間（ゲルタイム）が大きく乱れるという問
題がある。2. Description of the Related Art Conventionally, as the above-described ground hardening method, generally, an acidic silica sol and an aqueous solution of an alkali agent are mixed and injected into the ground. The acidic silica sol in this case is a water dispersion in which sulfuric acid is usually added to water glass to make the pH less than 2, and a hydroxide of an alkaline earth metal such as magnesium hydroxide or calcium hydroxide is usually used as an alkali agent. (Tokuhei 3-2451)
5). However, the conventional method has a problem that since a large amount of sulfuric acid, which is a deleterious substance, is used, its handling is extremely troublesome, and as a result, a large amount of undesired sulfate groups is brought into the ground. In addition, since an aqueous solution of a strong alkaline agent such as magnesium hydroxide or calcium hydroxide is mixed with a strongly acidic silica sol having a pH of less than 2 by adding sulfuric acid to water glass, the pH of the entire chemical solution after mixing tends to fluctuate. In addition, there is a problem that the time required for gelling the water glass injected into the ground (gel time) is greatly disturbed.
【０００３】水ガラスを用いる地盤硬化法では、地盤中
に注入した水ガラスのゲル化を利用して該地盤を硬化さ
せる。この場合、水ガラスのゲルタイムは、該水ガラス
のＳｉＯ2濃度や硬化温度にもよるが、ｐＨにより大き
く影響されることが知られている。水ガラスに硬化剤と
して例えば硫酸を徐々に加え、そのｐＨを順次下げる
と、該水ガラスは概して、ｐＨ６．０〜９．０において
数秒〜数十秒でゲル化する所謂瞬結状態になり、またｐ
Ｈ４．５〜６．０未満において数分〜数十分でゲル化す
る所謂中結状態になり、更にｐＨ３．０〜４．５未満に
おいて数時間〜数十時間でゲル化する所謂長結状態にな
り、そしてｐＨ２未満では安定な酸性シリカゾルにな
る。水ガラスのゲルタイムは、ｐＨ６．０〜９．０近辺
の中性領域よりも低いｐＨ領域において、ｐＨとの関係
で対数的に長くなり、ｐＨ２未満では安定な酸性シリカ
ゾルになるのである。In the ground hardening method using water glass, the ground is hardened by utilizing the gelation of water glass injected into the ground. In this case, the gel time of the water glass is known to be greatly affected by the pH, though it depends on the SiO 2 concentration and the curing temperature of the water glass. When, for example, sulfuric acid is gradually added as a hardening agent to water glass, and the pH is sequentially lowered, the water glass generally becomes a so-called flashing state in which gelation occurs at pH 6.0 to 9.0 in several seconds to several tens of seconds, Also p
When H is less than 4.5 to 6.0, a so-called sintering state occurs in which gelation occurs in several minutes to several tens of minutes, and when pH is less than 3.0 to 4.5, a so-called sintering state occurs in which gelation occurs in several hours to tens of hours. And below pH 2 a stable acidic silica sol. The gel time of water glass becomes logarithmically longer in relation to pH in a pH range lower than the neutral range around pH 6.0 to 9.0, and becomes a stable acidic silica sol at a pH lower than 2.
【０００４】前記した従来法のように、地盤中に注入し
た薬液全体のｐＨが振れると、地盤中に酸性シリカゾル
として注入した水ガラスのゲルタイムが大きく乱れ、地
盤硬化に要する時間が乱れて、硬化作業の前後に予定さ
れている他の作業の進行に支障をきたすのである。When the pH of the whole chemical solution injected into the ground fluctuates as in the conventional method described above, the gel time of the water glass injected as acidic silica sol into the ground is greatly disturbed, and the time required for the ground hardening is disturbed. It interferes with the progress of other work scheduled before and after the work.
【０００５】地盤中に注入した薬液全体のｐＨが振れる
のを改善するため、アルカリ剤と共に調整剤、例えばヘ
キサメタリン酸アルカリ金属塩を用いることも行なわれ
ている（特公平３−２４５１５、特公平４−５６０７
４）。しかし、この従来法でも、単に強アルカリ剤の水
溶液を用いる前記した従来法に比べれば、ｐＨの振れを
相応に改善できるものの、その改善程度が不充分という
問題があり、また依然として、水ガラスに硫酸を加えて
ｐＨ２未満とした強酸性のシリカゾルを用いることによ
る前記した従来法と同様の問題がある。[0005] In order to improve the fluctuation of the pH of the whole chemical solution injected into the ground, an adjusting agent such as an alkali metal hexametaphosphate is also used together with the alkali agent (Japanese Patent Publication No. 3-24515, Japanese Patent Publication No. Hei 4-4). −5607
4). However, even with this conventional method, although the fluctuation of pH can be correspondingly improved as compared with the above-mentioned conventional method using only an aqueous solution of a strong alkaline agent, there is a problem that the degree of the improvement is insufficient, and still water glass has a problem. There is the same problem as the above-mentioned conventional method due to the use of a strongly acidic silica sol having a pH of less than 2 by adding sulfuric acid.
【０００６】[0006]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来法では、１）水ガラスの酸性シリカゾ
ルを調製するのに劇物である硫酸を多量に使用するた
め、その取扱いが誠に厄介である点、また２）結果とし
て好ましくない硫酸根を地盤中へ多量に持ち込むことに
なる点、更に３）地盤中に注入した薬液全体のｐＨが振
れ易く、酸性シリカゾルとして注入した水ガラスのゲル
タイムが乱れる点、以上の３点である。The problems to be solved by the present invention are as follows. In the conventional method, 1) a large amount of sulfuric acid, which is a deleterious substance, is used for preparing acidic silica sol of water glass, so that the handling thereof is difficult. It is very troublesome, 2) As a result, a large amount of undesired sulfate groups are brought into the ground, and 3) The pH of the whole chemical solution injected into the ground is easily changed, and water glass is injected as an acidic silica sol. Are the points where the gel time is disturbed.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決する本
発明は、地盤中に薬液を混合注入して該地盤を硬化させ
る方法において、薬液として水ガラスの水溶液と硬化剤
の水溶液とを用い、且つ該硬化剤として、無機酸と、硫
酸アルミニウム及び／又はポリ塩化アルミニウムとを用
いることを特徴とする地盤硬化法に係る。According to the present invention, there is provided a method of hardening a ground by mixing and injecting a chemical into the ground, wherein an aqueous solution of water glass and an aqueous solution of a hardener are used as the chemical. And a soil hardening method using an inorganic acid, aluminum sulfate and / or polyaluminum chloride as the hardening agent.
【０００８】本発明では、水ガラスの水溶液（Ａ液）
と、硬化剤の水溶液（Ｂ液）とを、地盤中に混合注入す
る。混合注入は、１）双方を注入直前に混合しておいて
から注入する方法（１ショット法）、２）双方を途中混
合しながら注入する方法（１．５ショット法）、３）双
方を注入直後に混合する方法（２ショット法）のいずれ
によってもよい。一般に、上記１）の方法では１本の注
入管を用い、また上記２）の方法では１本のＹ字注入管
を用い、更に上記３）の方法では２本の注入管或は二重
の注入管を用いる。In the present invention, an aqueous solution of water glass (solution A)
And an aqueous solution (solution B) of a curing agent are mixed and injected into the ground. The mixed injection is 1) a method in which both are mixed immediately before injection and then injection (1 shot method), 2) a method in which both are mixed while being injected halfway (1.5 shot method), 3) both injections Any method of mixing immediately after (two-shot method) may be used. In general, one injection pipe is used in the method 1), one Y-shaped injection pipe is used in the method 2), and two injection pipes or double injection pipes are used in the method 3). Use an injection tube.
【０００９】Ａ液としての水ガラスの水溶液の調製に用
いる水ガラスは、市販されている任意の水ガラスを使用
できる。通常はＪＩＳ３号の水ガラスを使用するが、Ｎ
ａ2Ｏ１モルに対してＳｉＯ2を３．６〜４．５モルの割
合で含有するＳｉＯ2高モル比の水ガラスも使用でき
る。As the water glass used for preparing the aqueous solution of water glass as the liquid A, any commercially available water glass can be used. Normally, water glass of JIS No. 3 is used.
water glass of SiO 2 high molar ratio containing SiO 2 in a proportion of 3.6 to 4.5 mol with respect to a 2 O1 moles can be used.
【００１０】Ｂ液としての硬化剤の水溶液の調製に用い
る硬化剤は、無機酸と、硫酸アルミニウム及び／又はポ
リ塩化アルミニウムとの組合わせである。無機酸として
は、塩酸、硝酸、硫酸等を使用できるが、通常は経済的
な硫酸を使用する。かかる硬化剤の水溶液を調製するに
際しては、補助的に他の調整剤、例えばミョウバンやリ
ン酸水素二ナトリウムの水和物（Ｎａ2ＨＰＯ4・１２Ｈ
2Ｏ）等も併用できる。硬化剤としてアルミニウム塩を
用いると、強固で耐久性の高いアルミニウムシリケート
が形成される。The curing agent used for preparing the aqueous solution of the curing agent as the liquid B is a combination of an inorganic acid and aluminum sulfate and / or polyaluminum chloride. As the inorganic acid, hydrochloric acid, nitric acid, sulfuric acid and the like can be used, but usually, economical sulfuric acid is used. In preparing such an aqueous solution of a curing agent, other modifiers such as alum and disodium hydrogen phosphate hydrate (Na 2 HPO 4 .12H
2 O) can also be used in combination. When an aluminum salt is used as a curing agent, a strong and highly durable aluminum silicate is formed.
【００１１】本発明では、地盤中に注入する一方の薬液
（Ａ液）として水ガラスの水溶液を調製し、また他方の
薬液（Ｂ液）として硬化剤の水溶液を調製して、これら
を所定割合で地盤中に混合注入する。Ａ液とＢ液の組成
や濃度、更には双方の混合注入割合を調節することによ
って、地盤中に混合注入する薬液全体のｐＨを所期の通
りに制御でき、したがって地盤中に注入した水ガラスの
ゲルタイムを所期の通りに制御できる。In the present invention, an aqueous solution of water glass is prepared as one chemical solution (solution A) to be injected into the ground, and an aqueous solution of a curing agent is prepared as the other chemical solution (solution B). Mix and inject into the ground with. By adjusting the composition and concentration of solution A and solution B, and also the mixing and injection ratio of both, the pH of the whole chemical mixed and injected into the ground can be controlled as expected, and therefore water glass injected into the ground Gel time can be controlled as expected.
【００１２】地盤硬化作業の現場では一般に、地盤硬化
作業それ自体を所期の通りに行なって、前後の作業を円
滑に進行させるため、地盤中に注入した水ガラスを中結
或は長結させる場合が多い。地盤中に注入した水ガラス
を数時間〜数十時間でゲル化させる長結では、前記した
ように、地盤中に注入する薬液全体のｐＨを３．０〜
４．５未満に調整する必要がある。この場合、硬化剤と
して無機酸と共に用いる他の剤の組成にもよるが、無機
酸として通常用いる硫酸の使用量をできるだけ少なく
し、よって地盤中に持ち込まれることとなる硫酸根の量
をできるだけ少なくするため、硫酸の使用量は、水ガラ
スの水溶液のｐＨを６．０〜９．０に調整する量（言い
替えれば水ガラスの水溶液をほぼ中和する量）とするの
が好ましい。In general, at the site of the ground hardening operation, the ground hardening operation itself is performed as intended, and the water glass injected into the ground is tied or long-bonded in order to smoothly advance the front and rear operations. Often. In long-lasting gelation of the water glass injected into the ground in several hours to several tens of hours, as described above, the pH of the whole chemical injected into the ground is 3.0 to 3.0.
It needs to be adjusted to less than 4.5. In this case, although it depends on the composition of other agents used together with the inorganic acid as the curing agent, the amount of sulfuric acid usually used as the inorganic acid is minimized as much as possible, so that the amount of sulfate groups that are brought into the ground is minimized. Therefore, the amount of sulfuric acid used is preferably an amount that adjusts the pH of the aqueous solution of water glass to 6.0 to 9.0 (in other words, an amount that substantially neutralizes the aqueous solution of water glass).
【００１３】上記の場合において具体的には、硬化剤と
して、硫酸と、硫酸アルミニウム及び／又はポリ塩化ア
ルミニウムとを用いる場合、水ガラス中のＮａ2Ｏ１モ
ル当たり、硫酸を０．７〜１．０モルの割合で用い、ま
た硫酸アルミニウム及び／又はポリ塩化アルミニウムを
０．００２〜０．１４モルの割合で用いる。この場合、
ポリ塩化アルミニウムは一般に［Ａｌ（ＯＨ）1.5Ｃｌ
1.25（ＳＯ4）0.125］nで示されるので、その使用量は
Ａｌ（ＯＨ）1.5Ｃｌ1.25（ＳＯ4）0.125に換算した値
である（ポリ塩化アルミニウムの使用量については以下
同じ）。上記の場合の硫酸の使用量は、水ガラスの水溶
液のｐＨを６．０〜９．０に調整する量であり、また硫
酸アルミニウム及び／又はポリ塩化アルミニウムの使用
量は、地盤中に注入する薬液全体のｐＨを３．０〜４．
５未満に調整する量である。[0013] Specifically in the above case, as the curing agent, and sulfuric acid when using the aluminum sulphate and / or poly aluminum chloride, per Na 2 O1 moles of water glass, sulfuric acid 0.7-1. It is used in a proportion of 0 mol, and aluminum sulfate and / or polyaluminum chloride is used in a proportion of 0.002 to 0.14 mol. in this case,
Poly aluminum chloride is generally [Al (OH) 1.5 Cl
1.25 (SO 4 ) 0.125 ] n , the amount used is a value converted to Al (OH) 1.5 Cl 1.25 (SO 4 ) 0.125 (the amount used of polyaluminum chloride is the same hereinafter). The amount of sulfuric acid used in the above case is an amount for adjusting the pH of the aqueous solution of water glass to 6.0 to 9.0, and the amount of aluminum sulfate and / or polyaluminum chloride is injected into the ground. The pH of the entire chemical is 3.0 to 4.
The amount is adjusted to less than 5.
【００１４】本発明では、地盤中に注入する薬液とし
て、従来法のように、水ガラスに硫酸を加えてｐＨ２未
満とした強酸性のシリカゾルを使用しないため、無機酸
として硫酸を用いる場合においても、硫酸の使用量を著
しく低減でき、また地盤中に持ち込まれることとなる硫
酸根の量を著しく低減できる。その上、従来法のよう
に、水酸化マグネシウムや水酸化カルシウム等の強アル
カリ剤を使用せず、硫酸アルミニウム及び／又はポリ塩
化アルミニウムを使用するため、これらのｐＨ緩衝能も
あって、資材として用いる水ガラスや硫酸に相応のバラ
ツキがあっても、地盤中に注入する薬液全体のｐＨの振
れを小さくでき、よって地盤中に注入した水ガラスのゲ
ルタイムを所期の通りに制御できる。In the present invention, a strongly acidic silica sol having a pH of less than 2 by adding sulfuric acid to water glass is not used as a chemical solution to be injected into the ground as in the conventional method. And the amount of sulfuric acid used can be significantly reduced, and the amount of sulfate radicals brought into the ground can be significantly reduced. In addition, unlike conventional methods, aluminum sulfate and / or polyaluminum chloride are used without using strong alkaline agents such as magnesium hydroxide and calcium hydroxide. Even if the water glass or sulfuric acid used has a considerable variation, the fluctuation of the pH of the whole chemical injected into the ground can be reduced, and the gel time of the water glass injected into the ground can be controlled as expected.
【００１５】[0015]
【発明の実施の形態】本発明の実施形態としては、下記
の例が挙げられる。 １）ＪＩＳ３号の水ガラス１００リットルに、水を加え
て、水ガラスの水溶液２００リットルを調製する（Ａ
液）。別に、７８％硫酸１３リットルに、酸化アルミニ
ウム含量１７％の硫酸アルミニウム（以下単に１７％硫
酸アルミニウムという）６kgと水とを加えて、硬化剤の
水溶液２００リットルを調製する（Ｂ液）。Ａ液とＢ液
とを、等量割合で地盤中に混合注入する方法。この場
合、Ａ液中のＮａ2Ｏ１モル当たり、Ｂ液中の硫酸は
０．８４モルに相当し、また硫酸アルミニウムは０．０
４８モルに相当する。尚、同様の条件下における試験で
は、薬液全体のｐＨは３．４であり、ゲルタイムは３６
０分である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention include the following examples. 1) Water is added to 100 liters of JIS No. 3 water glass to prepare 200 liters of an aqueous solution of water glass (A)
liquid). Separately, 6 kg of aluminum sulfate having 17% aluminum oxide (hereinafter simply referred to as 17% aluminum sulfate) and water are added to 13 liters of 78% sulfuric acid to prepare 200 liters of an aqueous solution of a curing agent (Solution B). A method in which A liquid and B liquid are mixed and injected into the ground at an equal ratio. In this case, the sulfuric acid in the liquid B was equivalent to 0.84 mol, and the aluminum sulfate was 0.04 mol per mol of Na 2 O in the liquid A.
This corresponds to 48 moles. In the test under the same conditions, the pH of the whole drug solution was 3.4 and the gel time was 36.
0 minutes.
【００１６】２）ＪＩＳ３号の水ガラス１００リットル
に、水を加えて、水ガラスの水溶液２００リットルを調
製する（Ａ液）。別に、７８％硫酸１４リットルに、１
０％ポリ塩化アルミニウム水溶液６kgと水とを加えて、
硬化剤の水溶液２００リットルを調製する（Ｂ液）。Ａ
液とＢ液とを、等量割合で地盤中に混合注入する方法。
この場合、Ａ液中のＮａ2Ｏ１モル当たり、Ｂ液中の硫
酸は０．９１モルに相当し、またポリ塩化アルミニウム
は０．０１５モルに相当する。尚、同様の条件下におけ
る試験では、薬液全体のｐＨは３．５であり、ゲルタイ
ムは１８０分である。2) Water is added to 100 liters of JIS No. 3 water glass to prepare 200 liters of an aqueous solution of water glass (Solution A). Separately, add 14 liters of 78% sulfuric acid to 1
Add 6 kg of 0% polyaluminum chloride aqueous solution and water,
A 200 liter aqueous solution of a curing agent is prepared (Solution B). A
A method of mixing and injecting the liquid and the liquid B into the ground at an equal ratio.
In this case, the sulfuric acid in the solution B corresponds to 0.91 mole, and the polyaluminum chloride corresponds to 0.015 mole per mole of Na 2 O in the solution A. In the test under the same conditions, the pH of the whole drug solution was 3.5, and the gel time was 180 minutes.
【００１７】[0017]
【発明の効果】既に明らかなように、以上説明した本発
明には、地盤中に注入する薬液として、従来法のよう
に、水ガラスに多量の硫酸を加えてｐＨ２未満とした強
酸性のシリカゾルを使用しないため、無機酸として硫酸
を用いる場合においても、硫酸の使用量を著しく低減で
き、また地盤中に持ち込まれることとなる硫酸根の量を
著しく低減できるという効果がある。その上、従来法の
ように、水酸化マグネシウムや水酸化カルシウム等の強
アルカリ剤を使用せず、硫酸アルミニウム及び／又はポ
リ塩化アルミニウムを使用するため、これらのｐＨ緩衝
能もあって、地盤中に注入する薬液全体のｐＨの振れを
小さくし、よって地盤中に注入した水ガラスのゲルタイ
ムを所期の通りに制御できるという効果がある。As is clear from the above description, the present invention described above comprises a strongly acidic silica sol which is prepared by adding a large amount of sulfuric acid to water glass to a pH of less than 2, as in the conventional method, as a chemical solution to be injected into the ground. Since sulfur is not used, even when sulfuric acid is used as the inorganic acid, the amount of sulfuric acid used can be significantly reduced, and the amount of sulfate groups brought into the ground can be significantly reduced. In addition, unlike conventional methods, aluminum sulfate and / or polyaluminum chloride are used without using a strong alkaline agent such as magnesium hydroxide or calcium hydroxide. Thus, there is an effect that the fluctuation of the pH of the whole chemical solution to be injected is reduced, and the gel time of the water glass injected into the ground can be controlled as expected.
Claims (3)
化させる方法において、薬液として水ガラスの水溶液と
硬化剤の水溶液とを用い、且つ該硬化剤として、無機酸
と、硫酸アルミニウム及び／又はポリ塩化アルミニウム
とを用いることを特徴とする地盤硬化法。In a method of hardening the ground by mixing and injecting a chemical solution into the ground, an aqueous solution of water glass and an aqueous solution of a hardener are used as the chemical solution, and an inorganic acid, aluminum sulfate and aluminum sulfate are used as the hardener. And / or using a polyaluminum chloride.
モル当たり、硫酸を０．７〜１．０モルの割合で、また
硫酸アルミニウム及び／又はポリ塩化アルミニウムを
｛但し、ポリ塩化アルミニウムはＡｌ（ＯＨ）1.5Ｃｌ
1.25（ＳＯ4）0. 125に換算して｝０．００２〜０．１４
モルの割合で用いる請求項１記載の地盤硬化法。2. As a hardening agent, Na 2 O 1 in water glass is used.
Sulfuric acid is used in a ratio of 0.7 to 1.0 mole per mole, and aluminum sulfate and / or polyaluminum chloride is used, provided that polyaluminum chloride is Al (OH) 1.5 Cl
1.25 (SO 4) in terms of 0.125} 0.002-.14
The method according to claim 1, wherein the method is used in a molar ratio.
を６．０〜９．０に調整する量の無機酸と、地盤中に注
入する薬液全体のｐＨを３．０〜４．５未満に調整する
量の硫酸アルミニウム及び／又はポリ塩化アルミニウム
を用いる請求項１記載の地盤硬化法。3. The pH of an aqueous solution of water glass as a curing agent
Of inorganic acid and / or polyaluminum chloride in an amount that adjusts pH to 6.0 to 9.0 and an amount that adjusts the pH of the whole chemical solution to be injected into the ground to less than 3.0 to 4.5. The ground hardening method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000071411A JP2000328056A (en) | 2000-01-01 | 2000-03-15 | Ground hardening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000071411A JP2000328056A (en) | 2000-01-01 | 2000-03-15 | Ground hardening method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13951199A Division JP3226510B2 (en) | 1999-05-20 | 1999-05-20 | Ground hardening method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000328056A true JP2000328056A (en) | 2000-11-28 |
Family
ID=18590001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000071411A Pending JP2000328056A (en) | 2000-01-01 | 2000-03-15 | Ground hardening method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000328056A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010140663A1 (en) * | 2009-06-04 | 2010-12-09 | 株式会社Hi-Van | Process for production of heat-resistant structure |
| JP2014062209A (en) * | 2012-09-24 | 2014-04-10 | Fuji Kagaku Kk | Solidification material for soil injection suppressed elution of sulfate ion to soil and soil injection method using the same |
| JP2018104913A (en) * | 2016-12-22 | 2018-07-05 | 株式会社竹中工務店 | Water shut-off body and water shut-off method |
-
2000
- 2000-03-15 JP JP2000071411A patent/JP2000328056A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010140663A1 (en) * | 2009-06-04 | 2010-12-09 | 株式会社Hi-Van | Process for production of heat-resistant structure |
| JP2014062209A (en) * | 2012-09-24 | 2014-04-10 | Fuji Kagaku Kk | Solidification material for soil injection suppressed elution of sulfate ion to soil and soil injection method using the same |
| JP2018104913A (en) * | 2016-12-22 | 2018-07-05 | 株式会社竹中工務店 | Water shut-off body and water shut-off method |
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