JPH10316967A - Soil hardening agent - Google Patents

Soil hardening agent

Info

Publication number
JPH10316967A
JPH10316967A JP14346097A JP14346097A JPH10316967A JP H10316967 A JPH10316967 A JP H10316967A JP 14346097 A JP14346097 A JP 14346097A JP 14346097 A JP14346097 A JP 14346097A JP H10316967 A JPH10316967 A JP H10316967A
Authority
JP
Japan
Prior art keywords
soil
weight
magnesium oxide
agent
magnesium sulfate
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
Application number
JP14346097A
Other languages
Japanese (ja)
Inventor
Katsuichi Kunimatsu
勝一 國松
Yutaka Matsuda
豊 松田
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP14346097A priority Critical patent/JPH10316967A/en
Publication of JPH10316967A publication Critical patent/JPH10316967A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/008—Flocking or deflocking agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

(57)【要約】 【課題】本発明は、建設作業現場からの発生土等の土壌
を迅速に固化せしめることを課題とする。 【解決手段】酸化マグネシウムおよび／または硫酸マグ
ネシウムを含有する土壌固化剤を土壌に添加混合するこ
とによって該土壌を迅速に固化せしめる。該土壌固化剤
には高炉スラグ、あるいは処理土のｐＨを下げるための
酸性剤、更には土壌中に多量の水分が含まれる場合は、
更に有機高分子凝集剤を添加してもよく、更に固化促進
剤を添加してもよい。(57) [Summary] An object of the present invention is to quickly solidify soil such as soil generated from a construction work site. The soil is rapidly solidified by adding and mixing a soil solidifying agent containing magnesium oxide and / or magnesium sulfate to the soil. The soil hardening agent is a blast furnace slag, or an acid agent for lowering the pH of the treated soil, and furthermore, if the soil contains a large amount of water,
Further, an organic polymer flocculant may be added, and a solidification accelerator may be further added.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、例えばシールド工
法、地中連続壁工法、浚渫工法、表層および深層地盤改
良工法等の建設現場からの発生土のような土壌を固化さ
せるために使用される土壌固化剤に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for solidifying soil such as soil generated from construction sites such as a shield method, an underground continuous wall method, a dredging method, a surface layer and a deep ground improvement method, and the like. It relates to a soil solidifying agent.

【０００２】[0002]

【発明の背景】上記建設現場からの発生土のような土壌
は水分を多量に含み流動性があり、そのまゝでは運搬、
輸送が困難である。そこで該土壌には土壌固化剤を添加
して固化させた上で運搬、輸送行なう方法が採られてい
る。BACKGROUND OF THE INVENTION Soil, such as soil generated from the above construction sites, contains a large amount of water and has fluidity.
Difficult to transport. Therefore, a method is employed in which the soil is solidified by adding a soil solidifying agent, and then transported and transported.

【０００３】[0003]

【従来の技術】従来、この種の土壌固化剤としては、セ
メント系固化剤、生石灰系固化剤、石膏系固化剤や有機
高分子系凝集剤等が使用されている。2. Description of the Related Art Conventionally, cement hardeners, quicklime-based hardeners, gypsum-based hardeners, organic polymer-based coagulants and the like have been used as soil hardeners of this kind.

【０００４】[0004]

【発明が解決しようとする課題】上記セメント系固化剤
や生石灰系固化剤は、土壌に対して通常１０〜１５重量
％添加するが、このような添加量では処理土のｐＨが１
２以上になり、また運搬、輸送が可能な程度に固化する
までに長時間を要すると言う問題点がある。更に上記石
膏系固化剤では処理土は短時間で固化するが、水に接触
すると固化剤が溶解して処理土が崩壊してしまい、また
多量に水分を含む土壌の場合には固化不良を起こす。ま
た更に上記有機高分子系凝集剤でも固化時間は早いが処
理土は耐水性がなく、水に接触すると処理土が崩壊して
しまい、また水分を多量に含む土壌の場合には該有機高
分子系凝集剤の添加量が多くなり、処理土が弾性体とな
って、重機類で突崩したり搬出したりする作業が困難に
なる。The above-mentioned cement-based solidifying agent and quick lime-based solidifying agent are usually added in an amount of 10 to 15% by weight based on the soil.
There is a problem that it takes two or more and it takes a long time to solidify to the extent that transportation and transportation are possible. Further, in the case of the above-mentioned gypsum-based solidifying agent, the treated soil solidifies in a short time, but when it comes into contact with water, the solidifying agent dissolves and the treated soil collapses. . Further, even with the above organic polymer-based flocculant, the solidification time is fast, but the treated soil is not water-resistant, and the treated soil collapses when it comes into contact with water. The added amount of the system coagulant increases, and the treated soil becomes an elastic body, which makes it difficult to break or carry out the heavy machinery.

【０００５】[0005]

【課題を解決するための手段】本発明はこのような建設
現場からの発生土のような土壌を短時間で運搬、輸送が
可能な程度に固化させることを課題とするものであり、
上記課題を解決するための手段として、酸化マグネシウ
ムおよび／または硫酸マグネシウムまたは酸化マグネシ
ウムおよび／または硫酸マグネシウム含有物からなる土
壌固化剤を提供し、該土壌固化剤は酸化マグネシウムお
よび／または硫酸マグネシウム２〜２０重量％、高炉ス
ラグ４０〜９８重量％、酸性剤２〜４重量％を含有する
ことが望ましい。また水分を多量に含む土壌の場合に
は、上記組成に更に有機高分子凝集剤を０．１２〜４重
量％添加することが望ましく、また更に固化促進剤を
０．３〜１０．０重量％添加することが望ましく、該固
化促進剤は水と反応して炭酸ガスを発生するものおよび
／または多価金属塩が望ましい。SUMMARY OF THE INVENTION It is an object of the present invention to solidify soil such as soil generated from a construction site in such a way that it can be transported and transported in a short time.
As a means for solving the above problems, there is provided a soil hardening agent comprising magnesium oxide and / or magnesium sulfate or a material containing magnesium oxide and / or magnesium sulfate, wherein the soil hardening agent comprises magnesium oxide and / or magnesium sulfate. It is desirable to contain 20% by weight, 40 to 98% by weight of blast furnace slag, and 2 to 4% by weight of an acid agent. In the case of soil containing a large amount of water, it is desirable to further add an organic polymer coagulant to the above composition in an amount of 0.12 to 4% by weight, and further to add a solidification accelerator in an amount of 0.3 to 10.0% by weight. It is desirable to add it, and the solidification accelerator is preferably one that reacts with water to generate carbon dioxide gas and / or a polyvalent metal salt.

【０００６】[0006]

【発明の実施の形態】本発明に使用される酸化マグネシ
ウムには、低温焼成品と高温焼成品とがあるが、反応性
の点からみて低温焼成品（軽焼マグネシア）の使用が望
ましい。また本発明ではドロマイトのような酸化マグネ
シウムを含むものも使用出来る。上記酸化マグネシウム
は硫酸マグネシウムに代えてもよく、また酸化マグネシ
ウムと硫酸マグネシウムとを併用してもよい。BEST MODE FOR CARRYING OUT THE INVENTION Magnesium oxide used in the present invention includes a low-temperature fired product and a high-temperature fired product. From the viewpoint of reactivity, the use of a low-temperature fired product (lightly fired magnesia) is preferred. In the present invention, those containing magnesium oxide such as dolomite can also be used. The magnesium oxide may be replaced with magnesium sulfate, or magnesium oxide and magnesium sulfate may be used in combination.

【０００７】本発明では上記酸化マグネシウムおよび／
または硫酸マグネシウムと共に高炉スラグを併用しても
よい。該高炉スラグとしては高炉スラグセメントに使用
されるグレードの高炉水砕スラグが望ましい。In the present invention, the above magnesium oxide and / or
Alternatively, blast furnace slag may be used together with magnesium sulfate. The blast furnace slag is desirably a granulated blast furnace slag used for blast furnace slag cement.

【０００８】本発明では処理土のｐＨを低くするために
酸性剤を使用してもよい。該酸性剤としては、例えば粉
末硫酸、ベンゼンスルホン酸、硼酸等の粉末状の無機酸
あるいは蓚酸、クエン酸、リンゴ酸等の粉末状の有機
酸、硫酸アルミニウム、硫酸アンモニウム、ベンゼンス
ルホン酸アンモニウム等の強酸と弱塩基との粉末状の塩
等が使用される。In the present invention, an acid agent may be used to lower the pH of the treated soil. Examples of the acidic agent include powdered inorganic acids such as powdered sulfuric acid, benzenesulfonic acid and boric acid, and powdered organic acids such as oxalic acid, citric acid and malic acid, and strong acids such as aluminum sulfate, ammonium sulfate and ammonium benzenesulfonate. And a salt of a powder with a weak base.

【０００９】処理する土壌の水分が例えば５０重量％以
上の多量に含まれる場合には、有機高分子凝集剤が使用
される。上記有機高分子凝集剤としては、例えばポリア
クリル酸ソーダ、ポリアクリルアミド、アクリル酸ソー
ダ−アクリルアミド共重合体、ポリエチレンオキサイド
等がある。When the soil to be treated contains a large amount of water, for example, 50% by weight or more, an organic polymer flocculant is used. Examples of the organic polymer coagulant include sodium polyacrylate, polyacrylamide, sodium acrylate-acrylamide copolymer, and polyethylene oxide.

【００１０】本発明では処理土の固化を促進するために
更に固化促進剤を添加してもよい。該固化促進剤として
は、炭酸ソーダ、重炭酸ソーダ、炭酸カリ、重炭酸カ
リ、エチレンカーボネート、イソシアナート化合物等の
水と反応して炭酸ガスを発生することが出来る化合物
（固化促進剤Ａ）および／または硫酸アルミニウム、硫
酸第１鉄、塩化カルシウム、塩化マグネシウム等の多価
金属塩（固化促進剤Ｂ）等が使用される。上記固化促進
剤Ｂのうち硫酸アルミニウムは上記したように酸性剤と
しても使用される。In the present invention, a solidification accelerator may be further added in order to promote the solidification of the treated soil. Examples of the solidification accelerator include compounds such as sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, ethylene carbonate, isocyanate compounds and the like which can react with water to generate carbon dioxide gas (solidification accelerator A) and / or Polyvalent metal salts (solidification accelerator B) such as aluminum sulfate, ferrous sulfate, calcium chloride, and magnesium chloride are used. Among the solidification accelerators B, aluminum sulfate is also used as an acid agent as described above.

【００１１】上記成分においては、酸化マグネシウムお
よび／または硫酸マグネシウムと土壌との固化反応、高
炉スラグを併用した場合には更に酸化マグネシウムおよ
び／または硫酸マグネシウムと高炉スラグとの固化反応
によって土壌が固化せしめられるが、酸性剤によって土
壌のｐＨを酸性側、望ましくはｐＨ５〜９、更に望まし
くはｐＨ５．８〜８．６に調節して該酸化マグネシウム
および／または硫酸マグネシウムと土壌との固化反応、
あるいは該酸化マグネシウムおよび／または硫酸マグネ
シウムと高炉スラグとの固化反応を促進する。また水分
を多量に含有する土壌の場合には、上記成分に加えて上
記有機高分子凝集剤を添加すると、土壌が凝縮して水が
排除され、望ましい固さの土壌固化物が得られる。更に
酸化マグネシウムおよび／または硫酸マグネシウムある
いは酸化マグネシウムおよび／または硫酸マグネシウム
と高炉スラグの併用の場合は、処理土の固化時間が３〜
４日であるが、上記固化促進剤の添加によって固化時間
を１２〜１８時間、更に固化促進剤Ａ，Ｂを併用した場
合は５〜８時間に短縮出来る。上記成分以外に、所望な
れば炭酸カルシウム、無水石膏、半水石膏、タルク等の
充填材が添加されてもよい。In the above components, the solidification reaction between magnesium oxide and / or magnesium sulfate and soil, and when blast furnace slag is used in combination, further solidifies the soil by solidification reaction between magnesium oxide and / or magnesium sulfate and blast furnace slag. However, the pH of the soil is adjusted to an acidic side, preferably pH 5 to 9, more preferably pH 5.8 to 8.6 by an acid agent, and the solidification reaction between the magnesium oxide and / or magnesium sulfate and the soil is performed.
Alternatively, the solidification reaction between the magnesium oxide and / or magnesium sulfate and the blast furnace slag is promoted. In the case of soil containing a large amount of water, when the organic polymer flocculant is added in addition to the above components, the soil is condensed and water is eliminated, and a solidified soil having a desired hardness is obtained. Further, when magnesium oxide and / or magnesium sulfate or magnesium oxide and / or magnesium sulfate and blast furnace slag are used in combination, the solidification time of the treated soil is 3 to
Although it is 4 days, the solidification time can be reduced to 12 to 18 hours by adding the above-mentioned solidification accelerator, and further to 5 to 8 hours when the solidification accelerators A and B are used together. In addition to the above components, if desired, fillers such as calcium carbonate, anhydrous gypsum, gypsum hemihydrate, talc and the like may be added.

【００１２】上記成分の添加比率は本発明の土壌固化剤
中、酸化マグネシウムおよび／または硫酸マグネシウム
２〜２０重量％、高炉スラグ４０〜９８重量％、酸性剤
２〜４重量％であり、該酸性剤は土壌のｐＨに応じて添
加量を調節すべきであることは言うまでもない。また有
機高分子凝集剤は０．１２〜４重量％の範囲で添加され
るが、この添加量は土壌の水分含有量に応じて調節され
る。更に固化促進剤は０．３〜１０．０重量％の範囲で
添加されるが、該固化促進剤はＡ，Ｂ併用されることが
望ましい。更に充填材は通常２５重量％の範囲で添加さ
れる。The addition ratio of the above components is 2 to 20% by weight of magnesium oxide and / or magnesium sulfate, 40 to 98% by weight of blast furnace slag, and 2 to 4% by weight of an acid agent in the soil solidifying agent of the present invention. It goes without saying that the amount of the agent should be adjusted according to the pH of the soil. The organic polymer coagulant is added in the range of 0.12 to 4% by weight, and the amount added is adjusted according to the water content of the soil. Further, the solidification accelerator is added in the range of 0.3 to 10.0% by weight, and the solidification accelerator is preferably used in combination with A and B. Further, the filler is usually added in the range of 25% by weight.

【００１３】本発明の土壌固化剤は土壌に添加する前に
全成分を混合し、その後土壌に添加されてもよいし、ま
た各成分を個々に土壌に添加されてもよいし、更に成分
のうちの二種以上をあらかじめ混合しておいて土壌に添
加されてもよい。The soil solidifying agent of the present invention may be prepared by mixing all the components before adding them to the soil and then adding them to the soil. Alternatively, each component may be added individually to the soil. Two or more of these may be mixed in advance and added to the soil.

【００１４】本発明の土壌固化剤の土壌に対する添加量
は、土質、含水量等によって調節される。一般に粘性の
大きな土質（粘土質）の場合には添加量は少なくして良
く、また粘性の小さな土質（砂質）の場合には添加量は
多くする。更に含水量の大きい土壌の場合は添加量は多
くし、含水量の小さい土壌の場合には添加量は少なくす
る。一般的に言えば含水量８０〜１００重量％の土壌の
場合には、本発明の土壌固化剤は土壌１ｍ3 当たり３０
〜１００kg程度添加され、含水量１００〜２００重量％
の土壌の場合には、本発明の土壌固化剤は土壌１ｍ3 当
たり５０〜２００kg程度添加される。The amount of the soil solidifying agent of the present invention added to soil is adjusted depending on the soil quality, water content and the like. Generally, the amount of addition may be small in the case of highly viscous soil (clay), and the amount of addition is large in the case of low viscosity soil (sand). Further, in the case of soil having a high water content, the amount of addition is increased, and in the case of soil having a low water content, the amount of addition is reduced. Generally speaking, in the case of soil having a water content of 80 to 100% by weight, the soil solidifying agent of the present invention is used in an amount of 30 to 30 m 3 / m 3 of soil.
~ 100kg added, water content 100 ~ 200wt%
Of in the case of soil, soil solidifying agent of the present invention is added about 50~200kg per soil 1 m 3.

【００１５】〔実施例１〕浚渫工法から発生した含水比
１００重量％の発生土（シルト混り粘土質）１ｍ3 に対
して軽焼酸化マグネシウム８０重量％、ドロマイト２０
重量％の混合物からなる土壌固化剤を１５０kg投入し、
バックフォによって掻き回し攪拌混合する。該処理土は
上記固化剤添加後１０分で運搬輸送の可能な程度に凝集
固化し、３時間後にはポータブルコーン貫入抵抗値は
１．５kg／cm2 であり、該処理土固化物は水との接触に
よっても崩壊しない状態となる。[Example 1] Light-burned magnesium oxide 80% by weight, dolomite 20 per 1 m 3 of generated soil (clay containing silt) having a water content of 100% by weight generated by the dredging method
150 kg of a solidifying agent consisting of a mixture of
Stir and mix with a back hood. 10 minutes after the addition of the solidifying agent, the treated soil coagulates and solidifies to the extent that it can be transported and transported. After 3 hours, the portable cone penetration resistance value is 1.5 kg / cm 2 , and the treated soil solidifies with water. It does not collapse even when contacted.

【００１６】比較として上記発生土１ｍ3 に対して生石
灰を１５０kg投入して同様に攪拌混合したところ、運搬
輸送の可能な程度に固化するのに３０分を要し、固化後
３日を経過しても水との接触によって該処理土固化物は
崩壊した。As a comparison, 150 kg of quicklime was added to 1 m 3 of the generated soil, and the mixture was similarly stirred and mixed. As a result, it took 30 minutes to solidify to the extent that it could be transported and transported. However, the treated soil solidified collapsed due to contact with water.

【００１７】〔実施例２〕下記組成の土壌固化剤を調合
する。 軽焼マグネシア １０．０重量％ 硫酸マグネシウム ５．０ 〃 高炉スラグ ７９．５ 〃 硫酸アルミニウム ３．０ 〃 ポリアクリル酸ソーダ ２．５ 〃 シールド工法の現場から発生した水分含有比１２０重量
％の発生土（シルト混り粘土質）に、上記組成の土壌固
化剤を該発生土１ｍ3 に対して１２０kg投入し、バック
フォによって掻き回し攪拌混合する。該発生土は処理前
は流動性があったが、上記土壌固化剤添加後５分で運搬
輸送の可能な程度に凝集固化し、３時間後にポータブル
コーン貫入抵抗値は２．１kg／cm2 であり、該処理土固
化物は水との接触によっても崩壊しない状態となる。Example 2 A soil hardening agent having the following composition is prepared. Light burned magnesia 10.0% by weight Magnesium sulfate 5.0 〃 Blast furnace slag 79.5 ア ル ミ ニ ウ ム Aluminum sulfate 3.0 ソ ー Sodium polyacrylate 2.5 発 生 Soil generated from the site of the shield method with a moisture content of 120% by weight 120 kg of the soil solidifying agent having the above composition is added to 1 m 3 of the generated soil, and the mixture is stirred with a back fo and stirred and mixed. The generated soil had fluidity before the treatment, but coagulated and solidified in 5 minutes after the addition of the soil solidifying agent to such an extent that it could be transported and transported. After 3 hours, the portable cone penetration resistance was 2.1 kg / cm 2 . In some cases, the treated soil solidified material does not collapse even by contact with water.

【００１８】比較としてポリアクリルアミドを上記発生
土１ｍ3 に対して６０kg投入して同様に攪拌混合した
所、５分で運搬輸送の可能な程度に固化したが、固化後
３日を経過しても水との接触によって該処理土固化物は
崩壊した。そして固化物は弾性があり、重機類で突崩す
ことが困難であった。As a comparison, 60 kg of polyacrylamide was added to 1 m 3 of the generated soil, and the mixture was similarly stirred and mixed. After 5 minutes, the mixture was solidified to the extent that it could be transported and transported. The treated soil collapsed by contact with water. The solidified material had elasticity and was difficult to break down with heavy equipment.

【００１９】〔実施例３〕下記組成の土壌固化剤を調合
する。 軽焼マグネシア １０．０重量％ ドロマイト ３．０ 〃 高炉スラグ ６４．５ 〃 無水石膏 ２０．０ 〃 ポリアクリル酸ソーダ ０．５ 〃 重炭酸ソーダ ２．０ 〃 実施例２の発生土１ｍ3 に対して上記組成の土壌固化剤
を１２０kg投入し、バックフォによって掻き回し攪拌混
合する。該処理土は上記土壌固化剤添加後３分で運搬輸
送の可能な程度に凝集固化し、３時間後にポータブルコ
ーン貫入抵抗値は３．３kg／cm2 であり、該固化物は水
との接触によっても崩壊しない状態となる。Example 3 A soil hardening agent having the following composition is prepared. Light burned magnesia 10.0% by weight Dolomite 3.0 〃 Blast furnace slag 64.5 〃 Anhydrite 20.0 ソ ー Sodium polyacrylate 0.5 ソ ー Sodium bicarbonate 2.0 上 記 The above for 1 m 3 of soil generated in Example 2. 120 kg of a soil hardening agent having the composition is added, and the mixture is stirred by a back fo and stirred and mixed. The treated soil coagulates and solidifies to the extent that it can be transported and transported in 3 minutes after the addition of the soil solidifying agent, and after 3 hours the portable corn penetration resistance value is 3.3 kg / cm 2. It will not collapse even if it is.

【００２０】[0020]

【発明の効果】本発明の土壌固化剤は、土壌と混合して
短時間に運搬輸送の可能な程度に固化せしめることが出
来、また固化物は水との接触によっても崩壊せず、更に
重機類で容易に突崩すことが出来、建設現場での発生土
等の土壌の大量迅速処理が可能になる。The soil solidifying agent of the present invention can be mixed with soil and solidified in a short period of time so that it can be transported and transported. The solidified material does not disintegrate by contact with water. Can be easily broken down, and large-scale and rapid treatment of soil such as generated soil at a construction site becomes possible.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０９Ｋ 17/48 Ｂ０９Ｂ 3/00 ３０１Ｅ //(Ｃ０４Ｂ 28/08 22:14 22:06） Ｃ０９Ｋ 103:00 ──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. 6 Identification code FI C09K 17/48 B09B 3/00 301E // (C04B 28/08 22:14 22:06) C09K 103: 00

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】酸化マグネシウムおよび／または硫酸マグ
ネシウムまたは酸化マグネシウムおよび／または硫酸マ
グネシウム含有物からなる土壌固化剤1. A soil solidifying agent comprising magnesium oxide and / or magnesium sulfate or a material containing magnesium oxide and / or magnesium sulfate. 【請求項２】酸化マグネシウムおよび／または硫酸マグ
ネシウム２〜２０重量％と高炉スラグ４０〜９８重量％
とを含有する土壌固化剤2. 2 to 20% by weight of magnesium oxide and / or magnesium sulfate and 40 to 98% by weight of blast furnace slag
And a soil hardener containing 【請求項３】酸化マグネシウムおよび／または硫酸マグ
ネシウム２〜２０重量％、高炉スラグ４０〜９８重量％
および酸性剤２〜４重量％を含有する土壌固化剤3. Magnesium oxide and / or magnesium sulfate 2 to 20% by weight, blast furnace slag 40 to 98% by weight
And a soil hardening agent containing 2 to 4% by weight of an acidic agent 【請求項４】酸化マグネシウムおよび／または硫酸マグ
ネシウム２〜２０重量％、高炉スラグ４０〜９８重量
％、酸性剤２〜４重量％および有機高分子凝集剤０．１
２〜４重量％を含有する土壌固化剤4. 2 to 20% by weight of magnesium oxide and / or magnesium sulfate, 40 to 98% by weight of blast furnace slag, 2 to 4% by weight of acid agent and 0.1 of organic polymer flocculant.
Soil hardener containing 2-4% by weight 【請求項５】請求項１，２，３または４に記載の土壌固
化剤に更に固化促進剤を０．３〜１０．０重量％含有す
る土壌固化剤5. A soil hardening agent according to claim 1, further comprising 0.3 to 10.0% by weight of a hardening accelerator. 【請求項６】該固化促進剤は水と反応して炭酸ガスを発
生することが出来る化合物および／または多価金属塩で
ある請求項５に記載の土壌固化剤6. The soil solidifying agent according to claim 5, wherein the solidifying accelerator is a compound capable of generating carbon dioxide by reacting with water and / or a polyvalent metal salt.
JP14346097A 1997-05-15 1997-05-15 Soil hardening agent Pending JPH10316967A (en)

Priority Applications (1)

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000109830A (en) * 1998-10-01 2000-04-18 Ube Ind Ltd Solidifying material for wet soil and method for improving solidification of wet soil
JP2000109829A (en) * 1998-10-01 2000-04-18 Ube Ind Ltd Solidifying material for wet soil and method for improving solidification of wet soil
WO2003002820A1 (en) * 2001-06-29 2003-01-09 Sunhawk Pty Ltd Stabilising surfaces with magnesium cements
JP2003047388A (en) * 2001-08-06 2003-02-18 Ybk Kogyo:Kk Weed breeding prevention material and method of using it to construct weed breeding prevention layer on the ground
JP2003064361A (en) * 2001-08-29 2003-03-05 Matsuda Giken Kogyo Kk Soil hardening agent
JP2003117532A (en) * 2001-10-09 2003-04-22 Taiheiyo Cement Corp Heavy metal elution suppressing solidifying material and solidifying method
JP2003334526A (en) * 2002-05-21 2003-11-25 Konoike Constr Ltd Method for solidifying and insolubilizing contaminated soil
JP2005007256A (en) * 2003-06-18 2005-01-13 Matsuda Giken Kogyo Kk Contaminated soil insolubilizer
JP2006000692A (en) * 2004-06-15 2006-01-05 Konoike Constr Ltd Dehydration / solidification method for dredged soil
JP2007084360A (en) * 2005-09-20 2007-04-05 Ube Material Industries Ltd Magnesium oxide powder for soil hardening material
KR100711115B1 (en) 2006-10-02 2007-04-24 석성기업주식회사 Clay hardener and clay composition to which the hardener is added
JP2007301418A (en) * 2006-01-26 2007-11-22 Jfe Mineral Co Ltd Soil purification material
JP2008049210A (en) * 2006-03-31 2008-03-06 Sumitomo Osaka Cement Co Ltd Hazardous metal elution reduction solidification method and hazardous metal elution reduction solidification material
JP2008255193A (en) * 2007-04-03 2008-10-23 Matsuda Giken Kogyo Kk Soil solidifying agent
JP2009013427A (en) * 2001-11-30 2009-01-22 Matsuda Giken Kogyo Kk Solidified insolubilizer for soil and soil treatment method
JP2010005488A (en) * 2008-06-24 2010-01-14 Taiheiyo Cement Corp Method of evaluating heavy metal insolubilization performance of magnesium oxide
US8617307B2 (en) * 2009-01-30 2013-12-31 Industry Foundation Of Chonnam National University Alkali-activated binder, alkali-activated mortar, concrete products and wet red clay paving material using binder
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JP2014185300A (en) * 2013-03-25 2014-10-02 Ube Material Industries Ltd Soil solidification agent and soil solidification method
JP2018044110A (en) * 2016-09-16 2018-03-22 鹿島建設株式会社 Soil modifier
JP2018141266A (en) * 2017-02-24 2018-09-13 株式会社 Ｇｔスパイラル Ground repair method and solidifying agent used therefor
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WO2024024719A1 (en) * 2022-07-27 2024-02-01 宇部マテリアルズ株式会社 Alkali agent

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000109830A (en) * 1998-10-01 2000-04-18 Ube Ind Ltd Solidifying material for wet soil and method for improving solidification of wet soil
JP2000109829A (en) * 1998-10-01 2000-04-18 Ube Ind Ltd Solidifying material for wet soil and method for improving solidification of wet soil
WO2003002820A1 (en) * 2001-06-29 2003-01-09 Sunhawk Pty Ltd Stabilising surfaces with magnesium cements
JP2003047388A (en) * 2001-08-06 2003-02-18 Ybk Kogyo:Kk Weed breeding prevention material and method of using it to construct weed breeding prevention layer on the ground
JP2003064361A (en) * 2001-08-29 2003-03-05 Matsuda Giken Kogyo Kk Soil hardening agent
JP2003117532A (en) * 2001-10-09 2003-04-22 Taiheiyo Cement Corp Heavy metal elution suppressing solidifying material and solidifying method
JP2009013427A (en) * 2001-11-30 2009-01-22 Matsuda Giken Kogyo Kk Solidified insolubilizer for soil and soil treatment method
JP2003334526A (en) * 2002-05-21 2003-11-25 Konoike Constr Ltd Method for solidifying and insolubilizing contaminated soil
JP2005007256A (en) * 2003-06-18 2005-01-13 Matsuda Giken Kogyo Kk Contaminated soil insolubilizer
JP2006000692A (en) * 2004-06-15 2006-01-05 Konoike Constr Ltd Dehydration / solidification method for dredged soil
JP2007084360A (en) * 2005-09-20 2007-04-05 Ube Material Industries Ltd Magnesium oxide powder for soil hardening material
KR101214032B1 (en) 2005-09-20 2012-12-20 우베 마테리알즈 가부시키가이샤 Magnesium oxide powder for soil hardener
JP2007301418A (en) * 2006-01-26 2007-11-22 Jfe Mineral Co Ltd Soil purification material
JP2008049210A (en) * 2006-03-31 2008-03-06 Sumitomo Osaka Cement Co Ltd Hazardous metal elution reduction solidification method and hazardous metal elution reduction solidification material
KR100711115B1 (en) 2006-10-02 2007-04-24 석성기업주식회사 Clay hardener and clay composition to which the hardener is added
JP2008255193A (en) * 2007-04-03 2008-10-23 Matsuda Giken Kogyo Kk Soil solidifying agent
JP2010005488A (en) * 2008-06-24 2010-01-14 Taiheiyo Cement Corp Method of evaluating heavy metal insolubilization performance of magnesium oxide
US8617307B2 (en) * 2009-01-30 2013-12-31 Industry Foundation Of Chonnam National University Alkali-activated binder, alkali-activated mortar, concrete products and wet red clay paving material using binder
KR101366864B1 (en) * 2013-03-06 2014-02-21 대한민국 Ground reinforcing structure for stone pagoda cultural heritage
JP2014185300A (en) * 2013-03-25 2014-10-02 Ube Material Industries Ltd Soil solidification agent and soil solidification method
JP2018044110A (en) * 2016-09-16 2018-03-22 鹿島建設株式会社 Soil modifier
JP2018141266A (en) * 2017-02-24 2018-09-13 株式会社 Ｇｔスパイラル Ground repair method and solidifying agent used therefor
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CN119546551A (en) * 2022-07-27 2025-02-28 宇部材料工业株式会社 Alkali
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