JPS5852383A - Soil stabilizer - Google Patents

Soil stabilizer

Info

Publication number
JPS5852383A
JPS5852383A JP14977081A JP14977081A JPS5852383A JP S5852383 A JPS5852383 A JP S5852383A JP 14977081 A JP14977081 A JP 14977081A JP 14977081 A JP14977081 A JP 14977081A JP S5852383 A JPS5852383 A JP S5852383A
Authority
JP
Japan
Prior art keywords
water
sodium
silicate
potassium
soil stabilizer
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
Application number
JP14977081A
Other languages
Japanese (ja)
Other versions
JPS6332114B2 (en
Inventor
Kunio Sakagami
阪上 邦夫
Kazuhiro Takeshita
和宏 竹下
Tetsuo Nakase
中瀬 哲夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Chemical Industries Ltd
Original Assignee
Sanyo Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Chemical Industries Ltd filed Critical Sanyo Chemical Industries Ltd
Priority to JP14977081A priority Critical patent/JPS5852383A/en
Publication of JPS5852383A publication Critical patent/JPS5852383A/en
Publication of JPS6332114B2 publication Critical patent/JPS6332114B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To provide a safe and low-cost soil stabilizer having a high binding strength and excellent water checking property and penetrating power, prepared by blending sodium (potassium) silicate with a specified water soluble lower alkylene carbonate. CONSTITUTION:The soil stabilizer is prepared by blending sodium silicate (or potassium silicate) with a 10:90-36:65 by wt. mixt. of ethylene carbonate and prophylene carbonate, in the molar ratio of about 1:0.2-2. The stabilizer is usually used in the form of an aqueous solution with a solid content of about 10-40wt%. A water-soluble acidic metal salt (e.g., acidic metal salt of phosphoric acid) and/or a water-soluble monototri-valent neutral metal salt (e.g., sodium chloride) may be added in an amount of 0.02-1.2mol per 1mol of sodium (potassium) silicate.

Description

【発明の詳細な説明】 本発明は土質安定剤に関するものである。さらに詳しく
は軟弱地盤の強化あるいは漏水地盤の止水などの目的で
使用される、固結強度が優れ、止水性、浸透性などが優
れ且つ安全性が高く、安価で経済性に富む土質安定剤に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to soil stabilizers. More specifically, it is a soil stabilizer that has excellent consolidation strength, excellent water-stopping properties, permeability, etc., and is highly safe, inexpensive, and highly economical, and is used for the purpose of strengthening soft ground or stopping water from leaking ground. It is related to.

軟弱地盤あるいは漏水地盤の改良を目的とする薬液注入
工事で使用される土質安定剤としてケイ酸ナトリウムと
水溶性低級アルキレンカーボネートまたはこれらとナト
リウム、カリウムなどの重炭酸塩、塩化物、硫酸塩、硝
酸塩、もしくは第2リン酸塩からなるものが知られてい
る。しかしこれらの土質安定剤は経済性、安全性2作業
性、浸透性および止水性についてはかなり満足できるも
のであるが、固結強度の面で十分でなく、複雑な土質や
地下水の存在下などの場合のような実際の注入施工にお
ける困難な問題を解決するまでには至っていない。
Sodium silicate and water-soluble lower alkylene carbonate, or these together with bicarbonates such as sodium and potassium, chlorides, sulfates, and nitrates, are used as soil stabilizers in chemical injection work for the purpose of improving soft or leaky ground. , or one consisting of a secondary phosphate is known. However, although these soil stabilizers are quite satisfactory in terms of economy, safety, workability, permeability, and water-stopping properties, they are insufficient in terms of consolidation strength, and are difficult to use in complex soils or in the presence of groundwater. It has not yet been possible to solve the difficult problems in actual injection construction, such as in the case of .

本発明者らはケイ酸アルカリ金属塩との反応において優
れた効果を発揮する水tW性低級アルキレンカーボネー
ト類を用いて固結強度の向上を中心としてさらには他の
緒特性の向丘した土質安定剤を開発すべく鋭意検討を重
ねた結果本発明に到達酸カリウムQ、エチレンカーボネ
ート(131)トプロピレンカーボネー)(B、)との
混合物で、その重量割合が(Bt) : (B2)=1
o:9d〜35:65ノモ(7)e)かラナル土質安定
剤(第一発明)およびケイ酸ナトリウムtたはケイ酸カ
リウムQ、エチレンカーポ+ −ト(B1)とプロピレ
ンカーボネート(B2)との混ば物でその重量割合が(
B□): (B2)= 10:90〜35:65(7)
もの■および水溶性の酸性金属塩まだは/および水溶性
の1〜3価の金属の中性塩0からなる土質安定剤(第二
発明)である。
The present inventors have developed a soil stabilizer that focuses on improving consolidation strength and also has other properties by using water-based lower alkylene carbonates that exhibit excellent effects in reaction with alkali metal silicate salts. As a result of intensive studies to develop the present invention, we have arrived at the present invention, which is a mixture of acid potassium Q and ethylene carbonate (131) topropylene carbonate) (B,), the weight ratio of which is (Bt): (B2)=1
o:9d to 35:65 Nomo(7)e) or Ranal soil stabilizer (first invention) and sodium silicate t or potassium silicate Q, ethylene carbonate (B1) and propylene carbonate (B2) The weight percentage of the adulterant is (
B□): (B2) = 10:90-35:65 (7)
This is a soil stabilizer (second invention) consisting of (2) and a water-soluble acidic metal salt and/or a water-soluble neutral salt of a mono- to trivalent metal.

本発明において使用されるケイ酸す)IJウム(へ)と
しては、JISK−1408に規定されている1号、2
号、3号、4号などがあげられるが、特に土質処理に使
用されているケイ酸ナトリウムJIS 3号が好ましい
、またケイ酸カリウムも使用される。
The silicate used in the present invention is No. 1 or No. 2 specified in JISK-1408.
Among them, sodium silicate JIS No. 3, which is used for soil treatment, is particularly preferred, and potassium silicate is also used.

エチレンカーボネート(B、)およびプロピレンカーボ
ネート(B2)は通常市販のものでよい。
Ethylene carbonate (B,) and propylene carbonate (B2) may be commercially available products.

エチレンカーボネート(B1)、!:プロピレンヵーボ
ネート(B2)の混合塀(へ)の混合割合は重量基準で
(B、) : (B2)=10:90〜35:65(7
)範囲であることが必要である。この範囲外では、その
固結強度はエチレンカーボネートまたはプロピレンカー
ボネート単独の場合の固結強度と何ら変わるところがな
く大幅な強度の向J:は期待できない、(B、)と(B
2)の割合は好ましくは重量基準で(B1) : (B
2)= 1:(:87〜30ニア0である。
Ethylene carbonate (B1),! : The mixing ratio of propylene carbonate (B2) is based on weight (B,) : (B2) = 10:90 to 35:65 (7
) range. Outside this range, the consolidation strength is no different from that of ethylene carbonate or propylene carbonate alone, and a significant increase in strength cannot be expected.
The ratio of 2) is preferably on a weight basis (B1): (B
2)=1:(:87-30 near 0.

/δ゛Jし゛ 本発明におけるケイ酸ナトリウムまijpτ′イ酸カリ
ウム■とエチレンカーボネート(B1)トプロピレンカ
ーポネー1− (B2)との混合物■で、その重量02
〜2モルであり、好ましくはα4〜L2モルである。
/δ゛Jshi゛Sodium silicate or ijpτ' in the present invention is a mixture ■ of potassium sulfate ■ and ethylene carbonate (B1) topropylene carbonate 1- (B2) whose weight is 02
~2 mol, preferably α4~L2 mol.

0が02モル未満の場合は充分な固結強度が得られない
。まだ■が2モルより大の場合は% 2モルに比較して
固結強度の向1が殆んど見られない。
If the amount of 0 is less than 2 moles, sufficient consolidation strength cannot be obtained. However, when ■ is larger than 2 moles, there is hardly any improvement in consolidation strength compared to %2 moles.

またト記■において(B2)に対する代のNa2Oまた
に20のモル数と(B1)のモル数の合計;は、好まし
げで十分な固結強度が得られ、ゲルタイムの調整も広範
囲に且つ容易にできるものであるがさらに水溶性の酸性
金属塩または/および水溶性の1〜3価の金属の中性塩
C)を加えることによってゲルタイムを数秒単位の瞬結
状態にするのを極めて容易とするなどゲルタイム促進効
果を大としたり、まだ固結強度をさらに向1させる。さ
らに経済性の面からも0は0より安価であるため有利で
ある。
In addition, in (2), the sum of the number of moles of Na2O or 20 as a substitute for (B2) and the number of moles of (B1) is preferable and sufficient consolidation strength can be obtained, and the gel time can be adjusted over a wide range. Although this can be easily done, it is extremely easy to achieve an instantaneous gelation state in which the gel time is on the order of several seconds by adding a water-soluble acidic metal salt or/and a water-soluble neutral salt of a mono- to trivalent metal (C). The gel time promotion effect can be increased, and the consolidation strength can be further improved. Further, from an economic point of view, 0 is advantageous because it is cheaper than 0.

0として使用される水溶性の酸性金属塩としては酸性リ
ン酸金属塩(酸性リン酸ナトリウム、酸性リン酸カリウ
ム、酸性リン酸マグネシウムなど)。
Examples of water-soluble acidic metal salts used as 0 include acidic phosphate metal salts (acidic sodium phosphate, acidic potassium phosphate, acidic magnesium phosphate, etc.).

酸性縮合リン酸金属塩(酸性ピロリン酸ナトリウム、酸
性ビロリン酸カリウム、酸性メタリン酸すトリウム、酸
性メタリン酸カリウムなど)9重量重亜硫酸金属塩(重
亜硫酸ナトリウム、重唾硫酸カリウムなど)およびこれ
らの二種以との混合物があげられる。これらのうち好ま
しいものは酸性リン酸金属塩、酸性縮合リン酸金属塩2
重炭酸金属塩および重硫酸金属塩である。
Acidic condensed phosphate metal salts (acidic sodium pyrophosphate, acidic potassium birophosphate, acidic thorium metaphosphate, acidic potassium metaphosphate, etc.), 9 weight bisulfite metal salts (sodium bisulfite, potassium bisulfate, etc.) and these two Examples include mixtures with seeds. Among these, preferred are acidic metal phosphates and acidic condensed metal phosphates 2
metal bicarbonates and metal bisulfates.

水溶性の1〜3価の金属の中性塩としてはアルカリ金属
の中性塩(塩化ナトリウム、塩化カリウム、硫酸ナトリ
ウム、硫酸カリウム、炭酸ナトリウム、炭酸カリウムな
ど)ノマグネシウムの中性塩(塩化マグネシウム、硫酸
マグネシウムなト)。
Water-soluble neutral salts of mono- to trivalent metals include neutral salts of alkali metals (sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, sodium carbonate, potassium carbonate, etc.), neutral salts of magnesium (magnesium chloride, etc.) , magnesium sulfate).

アルミニウムの中性塩(塩化アルミニウム、硫酸アルミ
ニウムなど)およびこれらの二種以北の混合物があげら
れる。これらのうち好ましいものはアルカリ金属の中性
塩の中の塩化ナトリウム、塩化カリウム、硫酸ナトリウ
ム、硫酸カリウムおよびマグネシウムの中性塩、アルミ
ニウムの中性塩である。
Examples include neutral salts of aluminum (aluminum chloride, aluminum sulfate, etc.) and mixtures of these two types. Among these, preferred are neutral salts of alkali metals such as sodium chloride, potassium chloride, sodium sulfate, potassium sulfate and magnesium, and neutral salts of aluminum.

し0が通常002〜1モル、好ましくはαo5〜L1モ
Mである。0が002モル未満ではゲルタイムの促進効
大の場合は、ゲル化時に凝集物が発生し、不均一なゲル
を生成するため未反応の囚、@、0各成分がゲルから逸
脱すると共にゲルの安定性が劣化するという事態を招く
ことになる。また固結強度も低重する。
0 is usually 002 to 1 mole, preferably αo5 to L1 moM. If 0 is less than 002 moles, the gel time is greatly accelerated, aggregates are generated during gelation, and a non-uniform gel is formed. This will lead to a situation where stability deteriorates. Moreover, the consolidation strength is also low.

本発明の土質安定剤を調製するにさいし土質安定剤は、
作業性を考嘔して、適当な粘度の水溶液(薬液という)
にして用いるのが好ましい、たとえば■の薬液と■およ
び場合により■の薬γ夜〔以下■(Qの薬液という〕を
それぞれ調製し、混合して土質安定剤の薬液とするのが
好ましい、囚の薬液を調製する場合、その固形分濃度は
通常lO〜40重量%、好ましくは15〜35重量%で
ある。■(Qの薬液の調製は囚に対する■(Qの鼠を設
定し水を加えて伽の薬液と同容量になるようにして行う
のが好ましい。
In preparing the soil stabilizer of the present invention, the soil stabilizer is
An aqueous solution (called a chemical solution) with an appropriate viscosity, taking into consideration workability.
For example, it is preferable to prepare the chemical solution of ■, and optionally the drug γ of ■ (hereinafter referred to as the chemical solution of Q), and mix them to form a soil stabilizer chemical solution. When preparing a drug solution, the solid content concentration is usually 10 to 40% by weight, preferably 15 to 35% by weight. It is preferable to make the volume the same as that of the medicinal solution.

土質安定剤の薬液とした場合、囚の固形分濃度は種々変
えることができるが薬液全量に対震通常5〜20重量%
、好ましくは75〜175重量%である。
When used as a soil stabilizer chemical solution, the solid content concentration of the material can be varied, but it is usually 5 to 20% by weight of the total chemical solution.
, preferably 75 to 175% by weight.

囚の固形分濃度が5重量%未満であると、充分な固結強
度が得られない、また20重量%より大になると薬液粘
度が高くなり浸透性が劣化すると共に不均一なゲル化が
起こりゲルの安定性が劣化する。
If the solid content concentration of the drug is less than 5% by weight, sufficient consolidation strength cannot be obtained, and if it exceeds 20% by weight, the viscosity of the drug solution increases, the permeability deteriorates, and uneven gelation occurs. Gel stability deteriorates.

本発明の土質安定剤の適用できる土質ないし地盤(以下
両者を総称して地盤ということもある)としては、砂し
キ質土、砂質土、粘性土などの広い範囲の地盤があげら
れる。また複雑な地盤(たとえば砂しキ質土と砂質土と
一*与粘性士とが互層になって存在する地盤)や地下水
の存在する地盤にも適用できる。
The soil quality or ground to which the soil stabilizer of the present invention can be applied (hereinafter both may be collectively referred to as ground) includes a wide range of ground such as sandy soil, sandy soil, and clayey soil. It can also be applied to complex ground (for example, ground with alternating layers of sandy soil, sandy soil, and 1*viscosity soil) and ground where groundwater exists.

本発明の土質安定剤を薬液として地盤へ適用する方法は
とくに限定されず、たとえば■予め全成分を混合した薬
浴とし管で送り地盤へ適用する方法、(υ複数成分系の
薬液(たとえば2成分系)とし、別々に管で送り管の先
端部で混合して安定剤の薬液とし地盤に適用する方法、
0複数成分系(たとえば2成分系)とし、別々に注入管
(たとえば7字管)などで送り、途中で混合して安定剤
の薬液として地盤へ適用する方法などがあげられる。
The method of applying the soil stabilizer of the present invention to the ground as a chemical solution is not particularly limited. (component system) and mix it separately at the tip of the feed pipe to form a stabilizer chemical solution and apply it to the ground,
For example, a method may be used in which a multiple component system (for example, a two-component system) is sent separately through an injection pipe (for example, a 7-shaped pipe), and the mixture is mixed midway through and applied to the ground as a stabilizer chemical solution.

土質安定剤の地盤への適用方法は通常の適用方法、たと
えば散布、混入、注入、噴射などの方法があげられ注入
が好ましい。
The soil stabilizer can be applied to the ground by conventional methods such as spraying, mixing, injection, and injection, with injection being preferred.

本発明の土質安定剤には必要があれば、各種酸類、塩類
、セメント、ベントナイトなどの助剤を加えてもよい、
セメントとしてはポルトランドセメント、アルミナセメ
ントなどがあげられる。
If necessary, auxiliary agents such as various acids, salts, cement, and bentonite may be added to the soil stabilizer of the present invention.
Examples of cement include Portland cement and alumina cement.

本発明の土質安定剤は地盤に適用した場合、従来の安定
剤にくらべて固結強度が格段にすぐれているものである
。また止水性もすぐれ、低粘度であるため地盤への浸透
性にもすぐれている。
When the soil stabilizer of the present invention is applied to the ground, it has much better consolidation strength than conventional stabilizers. It also has excellent water-stopping properties, and its low viscosity allows for excellent penetration into the ground.

さらに本発明の土質安定剤は従来の安定剤と異なり広範
囲の地盤に適用することができる。たとえば複雑な地盤
でも、地下水の存在するような地盤でも十分な固結強度
、止水性および浸透性の得られるものである。
Furthermore, the soil stabilizer of the present invention can be applied to a wide range of soils, unlike conventional stabilizers. For example, sufficient consolidation strength, water-stopping properties, and permeability can be obtained even in complex ground or ground where groundwater exists.

上記以外に本発明の土質安定剤はa)が常温で液状を保
つため、取扱いが容易でしかも水に溶けやすいだめ特に
作業性にすぐれ、数秒から数十分に至るゲルタイムが自
由に調節でき−る。
In addition to the above, the soil stabilizer of the present invention has a) that maintains a liquid state at room temperature, so it is easy to handle and easily dissolves in water, so it is particularly easy to work with, and the gel time can be freely adjusted from a few seconds to several tens of minutes. Ru.

先に述べた ケイ酸ナトリウムと水溶性低級アルキレン
カーボネートとナトリウム、カリウムなどの重炭酸塩、
塩化物などからなる従来の土質安定剤では重炭酸塩など
を加えないと固結強度が向としないといわれていた。し
かしながら本発明においては水溶性低級アルキレンカー
ボネートである(B1)と(B2)の割合を特定の範囲
に設定することにより、予期に反して、重炭酸塩などを
使用しなくても固結強度が従来品より向とした。またこ
れに0を加えることにより固結強度をさらに向1させる
ことができた。
The previously mentioned sodium silicate, water-soluble lower alkylene carbonate, and bicarbonate such as sodium and potassium;
Conventional soil stabilizers made of chlorides and the like were said to have poor consolidation strength unless bicarbonates were added. However, in the present invention, by setting the ratio of water-soluble lower alkylene carbonates (B1) and (B2) within a specific range, the consolidation strength can be increased contrary to expectations without using bicarbonate or the like. Compared to conventional products. Furthermore, by adding 0 to this, the consolidation strength could be further improved by 1.

上記効、果を奏することから本発明の土質安定剤は水田
、湖、ダムなどにおける漏水防止、トンネル工事、シー
ルド工事、潜函工事、採油、立技。
Because it exhibits the above-mentioned effects, the soil stabilizer of the present invention is suitable for water leakage prevention in rice fields, lakes, dams, etc., tunnel construction, shield construction, subcase construction, oil extraction, and standing construction.

掘割などにおける地盤強化や漏水防止、軟弱地盤におけ
る注入による地盤強化や散布による強化。
Strengthening the ground through digging, preventing water leakage, and reinforcing soft ground through injection and spraying.

土木工事、建築工事における裏込めなどの如く農業、土
木建築、鉱業の分野において広汎に適用し得る。
It can be widely applied in the fields of agriculture, civil engineering and construction, and mining, such as backfilling in civil engineering and building construction.

以下実施例により本発明をさらに説明するが本発明はこ
れに限定されるものではない。
The present invention will be further explained below with reference to Examples, but the present invention is not limited thereto.

実施例1〜6および比較例1〜8 ケイ酸ナトリウム1183号(Na20 : 15%、
sio、 :282%)を水で稀釈してA液とし、一方
エチレンヵーボネートおよびプロピレンカーボネートに
水を加えて溶解し、B液としA液とB液からなる土質安
定剤の薬液を得た。この薬液は本発明のうち第1発明に
よるものである。
Examples 1 to 6 and Comparative Examples 1 to 8 Sodium silicate No. 1183 (Na20: 15%,
sio, :282%) was diluted with water to make solution A, and on the other hand, ethylene carbonate and propylene carbonate were added and dissolved in water to make solution B and a soil stabilizer chemical solution consisting of solutions A and B was obtained. . This chemical solution is according to the first invention of the present invention.

表−1および表−2に記載した組成のA液とB液の同量
を混合してゲルタイムおよびゲル化の状態と一日経過後
のホモゲ)v離しよう率を測定した。
Equal amounts of solutions A and B having the compositions shown in Tables 1 and 2 were mixed, and the gel time, gelation state, and homogenization rate after one day were measured.

また別のA液、B液の同量混合液を用いて間隙比二〇6
5の豊浦砂を鋼製モールド(直径:5cTn、高さ:l
(ロ))中で固結させ、得られたテストピースを10倍
容h1の水中で3日間養生した後、J I 5A−12
16に従ってその一軸圧縮強度を測定した。それらの結
果を併せて表−1および表−2に記載する。
In addition, using another mixed solution of the same amount of A liquid and B liquid, the gap ratio was 206.
5 of Toyoura sand into a steel mold (diameter: 5 cTn, height: l
(b)) After curing the obtained test piece in 10 times the volume of water for 3 days, J I 5A-12
The unconfined compressive strength was measured according to 16. The results are also listed in Table-1 and Table-2.

表−1および表−2より明らかなよう・に本発明の安定
剤は同一ケイ酸ナトリウム量の比較例と比較し、ンの固
結強度に優れていることが判る。またゲル化の状態およ
びホモゲル離しよう率においても同一ケイ酸ナトリウム
量の比較例と比較した場合、すぐれており止水性がすぐ
れていることがわかる。
As is clear from Tables 1 and 2, it can be seen that the stabilizer of the present invention has superior solidification strength when compared with the comparative example containing the same amount of sodium silicate. Furthermore, when compared with a comparative example with the same amount of sodium silicate in terms of gelation state and homogel release rate, it can be seen that the water-stopping properties are excellent.

実施例7 ケイ酸ナトリウムJI53号90.?を水で稀釈してA
液(100cc)とし、一方エチレンカーポネート2I
、プロピレンカーボネート8tおよび重硫酸ナトリウム
IOPに水を加えてm解し、B液(100cc )とし
A液、B液からなる土質安定剤の薬液を得た。
Example 7 Sodium silicate JI No. 53 90. ? Dilute with water to make A
liquid (100cc), while ethylene carbonate 2I
, 8 tons of propylene carbonate and sodium bisulfate IOP were dissolved by adding water to obtain Solution B (100 cc), which was a soil stabilizer chemical solution consisting of Solutions A and B.

この薬液は本発明のうち第2発明に相当するものである
。このA液とB液を同量混合したところα2分後に均一
なゲμが生成した。一方両液を間隙比:065の豊浦砂
中に圧太し、その固結砂の一軸圧縮強度を測定したとこ
ろ(3日間の水中養生後)I L5kgAn であった
、また固結砂は1ケ月後も非常に安定であり、体積収縮
1強度劣化がほとんど認められなかった。
This chemical solution corresponds to the second invention of the present invention. When equal amounts of liquid A and liquid B were mixed, a uniform gel μ was formed after α2 minutes. On the other hand, both solutions were compressed into Toyoura sand with a void ratio of 065, and the unconfined compressive strength of the consolidated sand was measured (after 3 days of underwater curing) to be I L5 kgAn. It remained very stable even after the treatment, with almost no volumetric shrinkage or strength deterioration observed.

実施例8 実施例7の薬液配合のうち、重硫酸ナトリウム10gを
重炭酸ナトリウム561?および硫酸マグネシウム14
Ftに変史する以外、実施例9と同様の薬液配合および
試験を行った。結果は下記のとおりであった。
Example 8 Among the chemical formulations of Example 7, 10 g of sodium bisulfate was mixed with 561 ml of sodium bicarbonate. and magnesium sulfate 14
The same chemical formulation and test as in Example 9 were conducted except for changing the history to Ft. The results were as follows.

ゲルタイム(20°C)二 02分 固結砂の一軸圧縮強度: 140 kgS実施例9 ケイ酸ナトリウムJI53号(比重L4. Na2Oa
5%S i02282%)168kgを水で稀釈してA
液(200t)とし、エチレンカーボネートz4kg、
プロピレンカーポネ−ト(16kg 、重炭酸ナトリウ
ム1okgに水を加えて溶解しB液(200t)としだ
本発明のうち第2発明による(以下本発明で統一する)
薬液と一方A液はと記のものと同様であるとし、エチレ
ンカーポネー)12ky重炭酸カリウム11 kgに水
を加えて溶解したものをB p (200t)とした従
来技術による薬液を作成した。これら2種類の薬液につ
いて多量の水が存在する地盤中での固結特性を調査する
目的で以下の試験を行った。
Gel time (20°C) 202 minutes Unconfined compressive strength of consolidated sand: 140 kgS Example 9 Sodium silicate JI No. 53 (specific gravity L4. Na2Oa
Dilute 168 kg of 5% Si02282%) with water to obtain A
liquid (200t), 4kg of ethylene carbonate,
Propylene carbonate (16 kg, 10 kg of sodium bicarbonate was dissolved in water to make solution B (200 t).According to the second invention of the present invention (hereinafter referred to as the present invention)
The chemical solution and the A solution were the same as those described above, and a conventional chemical solution called B p (200 t) was prepared by adding water to 11 kg of ethylene carbonate (12 ky potassium bicarbonate) and dissolving it. The following tests were conducted for the purpose of investigating the consolidation characteristics of these two types of chemical solutions in the ground where a large amount of water exists.

麻袋(容量約80t)の中に注入施工現場から採取され
た粗砂を間隙比α75となるように充填し、水槽の中へ
浸漬した。そのま覧約3時間放置して麻袋の中に充分水
を含浸させた後1通常施工現場で使用されている薬液注
入袋@(注入管は単管とし、AMとB液はY字管で混合
する方法を採用した)を使用してト記の2種類の薬液を
別々の麻袋の中の粗砂中に注入した。注入終了時点か、
ら約24時間経過後、水槽より麻袋を引き上げ、粗砂の
有効固結率(注入対象とする土砂全体積に対する固結部
分の体積を百分率で表わしたもので、この場合一応見か
け北は固結したように形状を保っていても水洗等で崩壊
してしまうような極めて弱い強度しか持たない固結部分
は除外する)および固結部分の一軸圧縮強度を測定した
ところ、・本発明による薬液では有効固結率が87%で
、固結部分の一軸圧縮強度は4.3嬌保であづた。また
従来技術による薬液では有効固結率が43・%で、固結
部分の一軸圧縮強度はtskμゼであった。
A jute bag (capacity: approximately 80 tons) was filled with coarse sand collected from the injection construction site so that the pore ratio was α75, and the bag was immersed in a water tank. After leaving it for about 3 hours to saturate the jute bag with enough water, 1. A chemical injection bag usually used at construction sites (the injection tube is a single tube, and the AM and B liquids are Y-shaped tubes). The two types of chemical solutions described in (G) were injected into coarse sand in separate jute bags using a mixing method. At the end of the injection,
Approximately 24 hours later, the jute bag is removed from the water tank, and the effective consolidation rate of the coarse sand (the volume of the consolidated portion relative to the total volume of soil to be injected is expressed as a percentage; in this case, the apparent north is confirmed to be When we measured the unconfined compressive strength of the solidified parts (excluding consolidated parts that have extremely weak strength such as those that collapse when washed with water, etc. even if they maintain their shape), we found that: - The chemical solution according to the present invention The effective consolidation rate was 87%, and the unconfined compressive strength of the consolidated portion was 4.3 tsukabo. In addition, the effective consolidation rate of the conventional chemical solution was 43%, and the unconfined compressive strength of the consolidated portion was tskμze.

以北の試験結果から、多量に水の存在する地盤の注入に
おいても本発明による薬液が従来技術による薬液に比べ
て特に固結特性に優れていることがわかる。
The test results thus far show that the chemical solution according to the present invention has particularly excellent consolidation properties compared to the chemical solution according to the prior art, even when injected into the ground where a large amount of water exists.

尚、本発明による薬液のケイ酸ナトリウム固形分濃度は
薬液全量に対してias重量%、エチレンカーボネート
とプロピレンカーボネートの重量割合は20:80、ケ
イ酸ナトリウムのNa2O1モルに対するエチレンカー
ポネートトプロピレンカーポネートのモル数の和はα4
7、同じく重炭酸ナトリウムのモル数はα46であった
。また、従来技術による薬−液のケイ酸ナトリウム固形
分濃度は本発明による薬液と同じであり、ケイ酸ナトリ
ウムのNano 1モIしに対するエチレンカーボネー
トのモル数はα53、同じく重炭酸カリウムのモル数は
α43であった。
In addition, the sodium silicate solid content concentration of the chemical solution according to the present invention is ias weight % with respect to the total amount of the drug solution, the weight ratio of ethylene carbonate and propylene carbonate is 20:80, and the ratio of ethylene carbonate to propylene carbonate to 1 mol of Na2O of sodium silicate The sum of the moles of is α4
7. Similarly, the number of moles of sodium bicarbonate was α46. In addition, the sodium silicate solid content concentration of the drug solution according to the prior art is the same as the drug solution according to the present invention, and the number of moles of ethylene carbonate per nano 1 mole of sodium silicate is α53, and the number of moles of potassium bicarbonate is also the same as that of the drug solution according to the present invention. was α43.

Claims (1)

【特許請求の範囲】 1、ケイ酸ナトリウムまたは1およびケイ酸カリウム(
A),エチレンカーポネー)CB、)、!=プロピレン
カーボネート(B2)との混合物で、蚤の重量割合が(
Bs ) : (B2 ) =10:90〜35:65
のもの■からなる土質安定剤。 の和が02〜2である特許請求の範囲第1項またエチレ
ンカーボネート(Bl)トデロヒ0レンカーボネート(
B2)との混合物でその重量割合が(B、 ) : (
B2) = 10:90〜35:65のもの■および水
溶性の酸性金属塩または/および水溶性の1〜3価の金
属の中性塩0からなる土質安定剤。 46囚と0の配合割合において、QのNa2Oまたある
特許請求の範囲第3項記載の土質安定剤。
[Claims] 1. Sodium silicate or 1 and potassium silicate (
A), ethylene carbonate) CB,),! = Mixture with propylene carbonate (B2), the weight percentage of fleas is (
Bs) : (B2) =10:90~35:65
A soil stabilizer consisting of ■. Claim 1, wherein the sum of
A mixture with B2) whose weight ratio is (B, ) : (
B2) = 10:90 to 35:65, and a soil stabilizer comprising 0 of a water-soluble acidic metal salt or/and a water-soluble neutral salt of a mono- to trivalent metal. The soil stabilizer according to claim 3, in which Q of Na2O is added at a mixing ratio of 46 to 0.
JP14977081A 1981-09-21 1981-09-21 Soil stabilizer Granted JPS5852383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14977081A JPS5852383A (en) 1981-09-21 1981-09-21 Soil stabilizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14977081A JPS5852383A (en) 1981-09-21 1981-09-21 Soil stabilizer

Publications (2)

Publication Number Publication Date
JPS5852383A true JPS5852383A (en) 1983-03-28
JPS6332114B2 JPS6332114B2 (en) 1988-06-28

Family

ID=15482347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14977081A Granted JPS5852383A (en) 1981-09-21 1981-09-21 Soil stabilizer

Country Status (1)

Country Link
JP (1) JPS5852383A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299677B1 (en) * 1996-06-25 2001-10-09 Borden Chemical, Inc. Binders for cores and molds

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022008982A1 (en) * 2020-07-04 2022-01-13 Dezhab Sang Engineering Company Soil sealant and stabilizer and slurries and materials strength reinforcement using minerals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299677B1 (en) * 1996-06-25 2001-10-09 Borden Chemical, Inc. Binders for cores and molds

Also Published As

Publication number Publication date
JPS6332114B2 (en) 1988-06-28

Similar Documents

Publication Publication Date Title
JP2018028013A (en) Suspended grouting material
JPS5852383A (en) Soil stabilizer
JPS5876480A (en) Gelation modifying composition for alkali metal silicate and gelation modification
JPH02397B2 (en)
JP2004027023A (en) Water glass grouting material and manufacturing method, grouting method and apparatus
JP2013010829A (en) Grouting material for improving ground, and method for manufacturing the same
JPH0525272B2 (en)
JPS5993787A (en) Solidification of ground
JP2001098271A (en) Ground solidification material
JPH1060470A (en) Composition for one powder type slow-hardening back-filling material
CN104119926B (en) A kind of novel concrete is modified arenosol compositions of additives
JP4094285B2 (en) Silicate-based soil stabilization chemicals
JP3216878B2 (en) Grout material for ground injection
JPS6223995B2 (en)
JP2875390B2 (en) Improvement of rock strengthening and / or cavity filling method in tunnel construction and mining
JPH07305061A (en) Curing agent for silicate-based grout and ground-stabilizing construction method using the same
JPH0471956B2 (en)
JP2000087035A (en) Ground solidifying material
KR101078043B1 (en) Composition for Grouting by Liquid Injection Type and Method of Construction Using Thereof
JP3101949B2 (en) Ground injection method
JPS6260436B2 (en)
JPS609544B2 (en) soil stabilization method
JPH04356588A (en) Stabilization of soil
JPS5980487A (en) Chemical solution for injection into ground
JPS60190490A (en) Method of stabilization of ground