JP3479715B2 - Soil solidifying agent - Google Patents
Soil solidifying agentInfo
- Publication number
- JP3479715B2 JP3479715B2 JP03846999A JP3846999A JP3479715B2 JP 3479715 B2 JP3479715 B2 JP 3479715B2 JP 03846999 A JP03846999 A JP 03846999A JP 3846999 A JP3846999 A JP 3846999A JP 3479715 B2 JP3479715 B2 JP 3479715B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- weight
- sulfate
- solidifying agent
- parts
- 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.)
- Expired - Fee Related
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
【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。TECHNICAL FIELD The present invention is used for solidifying soil such as soil generated from a construction site such as a shield construction method, an underground continuous wall construction method, a dredging construction method, and a surface and deep ground improvement construction method. 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 the soil generated from the above construction sites contains a large amount of water and is fluid, and if it is transported,
Difficult to transport. Therefore, a method has been adopted in which a soil solidifying agent is added to the soil to solidify it, and then the soil is 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-based solidifying agents, quicklime-based solidifying agents, gypsum-based solidifying agents, organic polymer-based flocculants and the like have been used as soil solidifying agents of this type.
【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 cement-based solidifying agent and quicklime-based solidifying agent are usually added in an amount of 10 to 15% by weight with respect to the soil. With such an addition amount, the pH of the treated soil is 1%.
There is a problem in that it takes 2 or more and it takes a long time to solidify to the extent that it can be transported and transported. Furthermore, with 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, and in the case of soil containing a large amount of water, poor solidification occurs. . Furthermore, even with the above organic polymer-based coagulant, the treated soil does not have water resistance even though the solidification time is short, the treated soil will collapse when contacted with water, and in the case of soil containing a large amount of water, the organic polymer The amount of the system flocculant added increases, and the treated soil becomes an elastic body, which makes it difficult for the heavy machinery to break down or carry it out.
【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１００重量部と、硫酸アルミニウム、硫酸第１鉄、ポ
リ塩化アルミニウム、酸性硫酸ナトリウム、スルファミ
ン酸、ポリアクリル酸、硫酸アンモニウム、明ばん、仮
焼明ばん石、および硫酸亜鉛からなる群から選ばれた一
種または二種以上の固化剤１０〜１００重量部とからな
る土壌固化剤を提供するものであり、また該酸化マグネ
シウム１００重量部と該固化剤１０〜１００重量部とか
らなる混合物には更に酸性剤５〜５０重量％を添加する
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および／または吸
水剤０．１〜２．０重量％を添加することが望ましい。
また上記土壌固化剤に更に固化促進剤を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ことが出来る化合物および
／または多価金属塩であることが望ましい。SUMMARY OF THE INVENTION An object of the present invention is to solidify soil such as soil generated from such a construction site so that it can be transported and transported in a short time.
As means for solving the above problems, 100 parts by weight of magnesium oxide, aluminum sulfate, ferrous sulfate, polyaluminum chloride, sodium acid sulfate, sulfamic acid, polyacrylic acid, ammonium sulfate, alum, calcined alum and Tona with one or 10 to 100 parts by weight of two or more solidifying agent selected from the group consisting of zinc sulfate
That it is intended to provide a soil solidifying agent, also or 100 parts by weight of magnesium oxide and solid agent 10 to 100 parts by weight
It is desirable further adding an acidic agent 5-50% by weight in Ranaru mixture. In the case of soil containing a large amount of water, it is desirable to add 0.1 to 2.0% by weight of an organic polymer coagulant and / or a water absorbing agent to the above composition.
Further, a solidification accelerator of 0.3 to 10.
It is desirable to add 0% by weight, and it is desirable that the solidification accelerator is a compound and / or a polyvalent metal salt capable of reacting with water to generate carbon dioxide gas.
【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。BEST MODE FOR CARRYING OUT THE INVENTION Magnesium oxide used in the present invention includes a low temperature calcined product and a high temperature calcined product, and it is preferable to use a low temperature calcined product (light burned magnesia) from the viewpoint of reactivity. In the present invention, a material containing magnesium oxide such as dolomite can also be used.
【０００７】本発明の土壌固化剤には、上記酸化マグネ
シウムの他に、硫酸アルミニウム、硫酸第１鉄、ポリ塩
化アルミニウム、酸性硫酸ナトリウム、スルファミン
酸、ポリアクリル酸、硫酸アンモニウム、明ばん、仮焼
明ばん石、および硫酸亜鉛からなる群から選ばれた一種
または二種以上の化合物が使用される。上記化合物のう
ち、硫酸アルミニウム、ポリ塩化アルミニウム、酸性硫
酸ナトリウム、スルファミン酸、ポリアクリル酸、硫酸
アンモニウムは処理土のｐＨを低くする作用もある。In addition to the above magnesium oxide, the soil solidifying agent of the present invention includes aluminum sulfate, ferrous sulfate, polyaluminum chloride, sodium acid sulfate, sulfamic acid, polyacrylic acid, ammonium sulfate, alum, and calcination. One or more compounds selected from the group consisting of albite and zinc sulfate are used. Among the above compounds , aluminum sulfate, polyaluminum chloride, sodium acid sulfate, sulfamic acid, polyacrylic acid, and ammonium sulfate also have the action of lowering the pH of the treated soil.
【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、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、ベンゼンスルホン酸等の粉末状の有機
酸、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、塩化第２鉄、塩化
マグネシウム、塩化アンモニウム等の粉末状の酸性塩等
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 and boric acid, or powdered organic acids such as oxalic acid, citric acid, malic acid, and benzenesulfonic acid, strong acids such as ammonium sulfate and ammonium benzenesulfonate, and weak bases. And a powdered salt of ferric chloride, a powdered acidic salt of ferric chloride, magnesium chloride, ammonium chloride, or the like.
【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、有機高分子凝集剤および
／または吸水剤が使用される。上記有機高分子凝集剤と
しては、例えばポリアクリル酸ナトリウム、ポリアクリ
ルアミド、アクリル酸ナトリウム−アクリルアミド共重
合体、ポリエチレンオキサイドの合成高分子凝集剤、グ
アガム、キサンタンガム、アルギン酸等の天然高分子凝
集剤等があり、吸水剤としては例えば下水焼却灰、木
炭、活性炭、シリカゲル等がある。When the soil to be treated contains a large amount of water such as 50% by weight or more, an organic polymer flocculant and / or a water absorbing agent is used. Examples of the organic polymer flocculant include sodium polyacrylate, polyacrylamide, sodium acrylate-acrylamide copolymer, synthetic polymer flocculant of polyethylene oxide, natural polymer flocculant such as guar gum, xanthan gum, and alginic acid. There are, for example, sewage incineration ash, charcoal, activated carbon and silica gel as the water absorbing agent.
【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、炭酸ナトリウム、重炭酸ナトリウム、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。該固化促進剤Ａは上記酸性剤と併用する
と、処理土のｐＨが高い場合でも、容易にｐＨを低くす
ることが出来るので、酸性助剤としても使用出来る。In the present invention, a solidification accelerator may be further added to accelerate the solidification of the treated soil. Examples of the solidification accelerator include sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, ethylene carbonate, a compound capable of reacting with water to generate carbon dioxide gas (solidification accelerator A), and the like. / Or calcium chloride,
A polyvalent metal salt such as magnesium chloride (solidification accelerator B) or the like is used. When the solidification accelerator A is used in combination with the above-mentioned acidifying agent, the pH can be easily lowered even when the pH of the treated soil is high, and therefore the solidifying accelerator A can be used also as an acid aid.
【００１１】上記成分においては、上記酸化マグネシウ
ムと上記化合物と土壌との固化反応によって土壌が固化
せしめられるが、所望なれば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ｐＨ
５．８〜８．６に調節して該酸化マグネシウムと該化合
物と土壌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
子凝集剤および／または吸水剤を添加すると、土壌が凝
縮して水が排除され、あるいは土壌中の水が吸収され、
望ましい固さの土壌固化物が得られる。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、未焼ドロマイト、ケイ石粉等の充填材が添加さ
れてもよい。[0011] In the above components, although the soil by solidification reaction of the magnesium oxide and the compound and soil is solidify, pH of the soil by and if desired, an acidic agent
On the acidic side, preferably pH 5-9, more preferably pH
5.8 to 8.6 and the magnesium oxide and the compound
It promotes the solidification reaction between objects and soil. In addition, in the case of soil containing a large amount of water, if the organic polymer flocculant and / or water absorbing agent is added in addition to the above components, the soil is condensed and water is removed or water in the soil is absorbed. Is
A soil solidified product having a desired hardness is obtained. In addition to the above components, if desired, calcium carbonate, anhydrous gypsum, hemihydrate gypsum,
Fillers such as talc, unburned dolomite and silica powder may be added.
【００１２】上記成分の添加比率は本発明の土壌固化剤
においては、酸化マグネシウム１００重量部に対して上
記化合物は１０〜１００重量部添加され、そして所望な
れば該土壌固化剤中に上記酸性剤は５〜５０重量％添加
されるが、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
集剤および／または吸水剤は０．１〜２．０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。更に上記固化促進剤は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２５〜５
００重量％の範囲で添加される。In the soil solidifying agent of the present invention, the addition ratio of the above components is such that 10 to 100 parts by weight of the above compound is added to 100 parts by weight of magnesium oxide, and the desired ratio is obtained.
Then , the above-mentioned acidifying agent is added to the soil solidifying agent in an amount of 5 to 50% by weight, but it goes without saying that the addition amount of the acidifying agent should be adjusted according to the pH of the soil. The organic polymer coagulant and / or the water absorbing agent is added in the range of 0.1 to 2.0% by weight, and the addition amount is adjusted according to the water content of soil. Further, the solidification accelerator is 0.3-10.
The solidification accelerator is added in the range of 0% by weight.
It is desirable to use them together. Further, the filler is usually 25 to 5
It is added in the range of 00% 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 added to the soil after mixing all the components before adding to the soil, or each component may be added individually to the soil. Two or more of them 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 may be increased in the case of low viscosity soil (sand). Further, the addition amount is increased in the case of soil having a high water content, and the addition amount is decreased in the case of soil having a low water content. 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 30 per 1 m 3 of soil.
˜100 kg, and in the case of soil having a water content of 100 to 200% by weight, the soil solidifying agent of the present invention is 1 m 3 of soil.
About 50 to 200 kg is added per unit.
【００１５】〔実施例１〕
地下鉄工事で発生した粘土質土壌（含水率４７重量％、
含水比８９重量％、一軸圧縮強度０ｋｇ／ｃｍ２、ｐＨ
７．８）１０００ｃｃに対し、軽焼酸化マグネシウム１
００重量部、硫酸アルミニウム２０重量部の混合物に１
０重量％の粉末酸性硫酸ナトリウムを添加した土壌固化
剤４０ｇを添加し攪拌混合した。該土壌を気中養生した
場合の固化状況を表１に示す。[Example 1] Clay soil generated by subway construction (water content 47% by weight,
Water content 89% by weight, uniaxial compressive strength 0 kg / cm 2 , pH
7.8) 1000 cc of light burned magnesium oxide 1
1 to a mixture of 00 parts by weight and 20 parts by weight of aluminum sulfate
40 g of a soil solidifying agent containing 0% by weight of powdered sodium acid sulfate was added and mixed with stirring. Table 1 shows the solidification status when the soil was cured in air.
【００１６】[0016]
【表１】
表１によれば、該土壌は３時間後には搬出に支障ない程
度に固化し、更に７日後にはｐＨ値が水質基準の上限
８．６を下回った。７日間気中養生した該土壌を水中に
投下した所、３日後でも崩壊はみられなかった。[Table 1] According to Table 1, the soil was solidified after 3 hours to such an extent that it would not hinder the carry-out, and after 7 days, the pH value was below the upper limit of the water quality standard of 8.6. When the soil cured in the air for 7 days was dropped into water, no collapse was observed even after 3 days.
【００１７】〔実施例２〕
トンネル工事で発生した砂質シルト土壌（含水率６３重
量％、含水比１７０重量％、一軸圧縮強度０ｋｇ／ｃｍ
２、ｐＨ６．７）１０００ｃｃに対し、軽焼酸化マグネ
シウム１００重量部、ポリ塩化アルミニウム２０重量部
の混合物に４５重量％の半水石膏を添加した土壌固化剤
５０ｇを添加し攪拌混合した。該土壌を気中養生した場
合の固化状況を表２に示す。[Example 2] Sandy silt soil generated during tunnel construction (water content: 63% by weight, water content: 170% by weight, uniaxial compressive strength: 0 kg / cm)
50 g of a soil solidifying agent to which 45 wt% of hemihydrate gypsum was added to a mixture of 100 parts by weight of light-burned magnesium oxide and 20 parts by weight of polyaluminum chloride was added to 1000 cc of 2 , pH 6.7) and stirred and mixed. Table 2 shows the state of solidification when the soil was cured in air.
【００１８】[0018]
【表２】
表２によれば、該土壌は直後でも搬出に支障ない程度に
固化し、更に８時間後にはｐＨ値が水質基準の上限８．
６を下回った。２４時間気中養生した該土壌を水中に投
下した所、３日後でも崩壊はみられなかった。[Table 2] According to Table 2, the soil was solidified even immediately afterward so as not to hinder the carry-out, and after 8 hours, the pH value reached the upper limit of 8.
Fell below 6. When the soil aged in air for 24 hours was dropped into water, no disintegration was observed even after 3 days.
【００１９】〔実施例３〕
実施例２の土壌に水を加えて含水率６７重量％、含水比
２０３重量％に調製した。該土壌１０００ｃｃに対し、
軽焼酸化マグネシウム１００重量部、明ばん５０重量部
の混合物に５０重量％の未焼ドロマイト、０．３重量％
のポリアクリル酸ナトリウムを添加した土壌固化剤５０
ｇおよび１００ｇを添加し攪拌混合した。該土壌を水中
養生した場合の固化状況（一軸圧縮強度（ｋｇ／ｃ
ｍ２）を表３に示す。Example 3 Water was added to the soil of Example 2 to prepare a water content of 67% by weight and a water content ratio of 203% by weight. For 1000 cc of the soil,
50% by weight unburned dolomite, 0.3% by weight in a mixture of 100 parts by weight of light-burned magnesium oxide and 50 parts by weight of alum
Soil solidifying agent with added sodium polyacrylate 50
g and 100 g were added and mixed with stirring. Solidification status when the soil was cured in water (uniaxial compressive strength (kg / c
m 2 ) is shown in Table 3.
【００２０】[0020]
【表３】
表３によれば、該土壌は土壌固化剤５０ｇ添加、１００
ｇ添加のいずれも１時間で搬出に支障ない程度に固化し
た。また８時間後のｐＨ値は両者共に７．８であった。
２４時間気中養生した該土壌を水中に投下した所、３日
後でも崩壊はみられなかった。[Table 3] According to Table 3, the soil was added with 50 g of a soil solidifying agent, 100
All of the additions of g were solidified to the extent that they did not hinder the delivery in 1 hour. The pH value after 8 hours was 7.8 in both cases.
When the soil aged in air for 24 hours was dropped into water, no disintegration was observed even after 3 days.
【００２１】〔実施例４〕
実施例１の土壌１０００ｃｃに軽焼酸化マグネシウム１
００重量部、硫酸第１鉄８０重量部の混合物に５０重量
％のケイ石粉と１重量％のエチレンカーボネートを添加
した土壌固化剤１００ｇを添加し攪拌混合した。該土壌
を気中養生した場合の固化状況を表４に示す。[Example 4] Light burned magnesium oxide 1 was added to 1000 cc of the soil of Example 1.
To a mixture of 00 parts by weight and 80 parts by weight of ferrous sulfate, 100 g of a soil solidifying agent containing 50% by weight of silica stone powder and 1% by weight of ethylene carbonate was added and mixed by stirring. Table 4 shows the solidification status when the soil was cured in air.
【００２２】[0022]
【表４】
表４によれば、該土壌は２０分後には搬出に支障ない程
度に固化し、ｐＨ値は水質基準の上限８．６を下回っ
た。２４時間気中養生した該土壌を水中に投下した所、
３日後でも崩壊はみられなかった。[Table 4] According to Table 4, after 20 minutes, the soil solidified to such an extent that it would not hinder the carrying out, and the pH value was below the upper limit of 8.6 of the water quality standard. When the soil that had been cured in the air for 24 hours was dropped into water,
No collapse was observed even after 3 days.
【００２３】〔実施例５〕
浚渫工事から発生した有機質粘質土壌（含水率６５重量
％、含水比１８６重量％、強熱加熱残分５３重量％／ｃ
ｍ２、ｐＨ６．３）１０００ｃｃに軽焼酸化マグネシウ
ム１００重量部、硫酸亜鉛５０重量部、硫酸アルミニウ
ム１５重量部の混合物に炭酸カルシウム３０重量％、グ
アガム０．３重量％を添加した土壌固化剤１５０ｇを添
加し攪拌混合した。該土壌を水中養生した場合の固化状
況を表５に示す。[Example 5] Organic viscous soil generated from dredging work (water content 65% by weight, water content ratio 186% by weight, ignition heating residue 53% by weight / c)
150 g of soil solidifying agent obtained by adding 30 parts by weight of calcium carbonate and 0.3% by weight of guar gum to a mixture of 100 parts by weight of light burned magnesium oxide, 50 parts by weight of zinc sulfate, and 15 parts by weight of aluminum sulfate in 1000 cc of m 2 , pH 6.3). Was added and mixed with stirring. Table 5 shows the solidification status when the soil was cured in water.
【００２４】[0024]
【表５】
表５によれば、該土壌は５時間後には搬出に支障ない程
度に固化し、更に７日後のｐＨ値は水質基準の上限８．
６を下回った。７日間水中養生した該土壌を水中に投下
した所、３日後でも崩壊はみられなかった。[Table 5] According to Table 5, the soil solidifies after 5 hours to the extent that it does not hinder the removal, and the pH value after 7 days is the upper limit of the water quality standard of 8.
Fell below 6. When the soil, which had been cured in water for 7 days, was dropped into water, no disintegration was observed even after 3 days.
【００２５】〔比較例１〕
実施例１の土壌１０００ｃｃに半水石膏を１００ｇおよ
び２００ｇを添加し攪拌混合した。該土壌を気中養生し
た場合の固化状況（一軸圧縮強度（ｋｇ／ｃｍ２）を表
６に示す。Comparative Example 1 100 g and 200 g of hemihydrate gypsum were added to 1000 cc of the soil of Example 1 and mixed with stirring. Table 6 shows the solidification state (uniaxial compressive strength (kg / cm 2 )) when the soil was cured in air.
【００２６】[0026]
【表６】
該土壌固化剤を１００ｇ添加した土壌は、２時間後、２
００ｇ添加した土壌は１時間後には搬出に支障のない程
度に固化し、また２４時間後のｐＨ値は８．０で水質基
準の上限８．６を下回ったが、２４時間気中養生した該
土壌を水中に投下した所、１日後には崩壊がみられた。[Table 6] The soil to which 100 g of the soil-solidifying agent was added was 2 hours later, and 2
The soil to which 00 g was added solidified after 1 hour to such an extent that there was no hindrance to carry-out, and the pH value after 24 hours was 8.0, which was below the upper limit of 8.6 of the water quality standard, but was cured in air for 24 hours. When the soil was dropped into water, it collapsed one day later.
【００２７】〔比較例２〕
実施例３の土壌１０００ｃｃに対し、ポルトランドセメ
ント１００重量部と硫酸アルミニウム１００重量部の混
合物からなる土壌固化剤１００ｇを添加し攪拌混合し
た。該土壌は直後の一軸圧縮強度が０．１ｋｇ／ｃｍ２
であり、その後強度向上がみられず搬出困難な状態であ
った。Comparative Example 2 To 1000 cc of the soil of Example 3, 100 g of a soil solidifying agent made of a mixture of 100 parts by weight of Portland cement and 100 parts by weight of aluminum sulfate was added and mixed with stirring. Immediately after that, the soil has a uniaxial compressive strength of 0.1 kg / cm 2
After that, the strength was not improved and it was difficult to carry out.
【００２８】[0028]
【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。また固化した土
壌のｐＨ値を水質基準の上限８．６を下回るようにする
ことが出来るので、該土壌からの地下水や雨水等の滲出
水が周囲の環境へ悪影響を与えることもなく、植生に対
しても問題がない。したがって該土壌は再利用が可能で
ある。Industrial Applicability The soil solidifying agent of the present invention can be mixed with soil and solidified to the extent that it can be transported and transported in a short time, and the solidified product does not collapse even when contacted with water, and the heavy equipment It can be easily broken down, and a large amount of soil such as soil generated at the construction site can be quickly processed. Further, since the pH value of the solidified soil can be set to be lower than the upper limit of 8.6 of the water quality standard, exuded water such as groundwater or rainwater from the soil does not adversely affect the surrounding environment and vegetation is prevented. There is no problem with it. Therefore, the soil can be reused.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ０９Ｃ 1/08 Ｅ０２Ｆ 7/00 Ｄ Ｃ０９Ｋ 17/08 Ｃ０９Ｋ 103:00 17/48 Ｂ０９Ｂ 3/00 ３０４Ｋ Ｅ０２Ｆ 7/00 ＺＡＢ Ｃ０９Ｋ 103:00 (72)発明者 松田 豊 神奈川県横浜市緑区中山町908−29 (56)参考文献 特開 昭51−20414（ＪＰ，Ａ) 特開 昭63−235392（ＪＰ，Ａ) 特開 昭62−260753（ＪＰ，Ａ) 特開 平10−316967（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C09K 17/02 B09B 3/00 B09C 1/08 C09K 17/08 C09K 17/48 E02F 7/00 C09K 103/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI B09C 1/08 E02F 7/00 D C09K 17/08 C09K 103: 00 17/48 B09B 3/00 304K E02F 7/00 ZAB C09K 103 : 00 (72) Inventor Yutaka Matsuda 908-29 Nakayama-cho, Midori-ku, Yokohama-shi, Kanagawa (56) Reference JP-A 51-20414 (JP, A) JP-A 63-235392 (JP, A) JP-A 62-260753 (JP, A) JP-A-10-316967 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) C09K 17/02 B09B 3/00 B09C 1/08 C09K 17 / 08 C09K 17/48 E02F 7/00 C09K 103/00
Claims (5)
ルミニウム、硫酸第１鉄、ポリ塩化アルミニウム、酸性
硫酸ナトリウム、スルファミン酸、ポリアクリル酸、硫
酸アンモニウム、明ばん、仮焼明ばん石、および硫酸亜
鉛からなる群から選ばれた一種または二種以上の固化剤
１０〜１００重量部とからなることを特徴とする土壌固
化剤1. From 100 parts by weight of magnesium oxide, aluminum sulfate, ferrous sulfate, polyaluminum chloride, sodium acid sulfate, sulfamic acid, polyacrylic acid, ammonium sulfate, alum, calcined alum, and zinc sulfate. A soil solidifying agent comprising 10 to 100 parts by weight of one or more solidifying agents selected from the group consisting of
ルミニウム、硫酸第１鉄、ポリ塩化アルミニウム、酸性
硫酸ナトリウム、スルファミン酸、ポリアクリル酸、硫
酸アンモニウム、明ばん、仮焼明ばん石、および硫酸亜
鉛からなる群から選ばれた一種または二種以上の固化剤
１０〜１００重量部とからなる混合物に酸性剤５〜５０
重量％を添加したことを特徴とする土壌固化剤2. From 100 parts by weight of magnesium oxide, aluminum sulfate, ferrous sulfate, polyaluminum chloride, sodium acid sulfate, sulfamic acid, polyacrylic acid, ammonium sulfate, alum, calcined amber and zinc sulfate. acidic agent 5-50 in a mixture consisting of selected one or 10 to 100 parts by weight of two or more solidifying agent from the group consisting
Soil solidifying agent characterized by adding wt%
ルミニウム、硫酸第１鉄、ポリ塩化アルミニウム、酸性
硫酸ナトリウム、スルファミン酸、ポリアクリル酸、硫
酸アンモニウム、明ばん、仮焼明ばん石、および硫酸亜
鉛からなる群から選ばれた一種または二種以上の固化剤
１０〜１００重量部とからなる混合物に酸性剤５〜５０
重量％および有機高分子凝集剤および／または吸水剤
０．１〜２．０重量％を添加したことを特徴とする土壌
固化剤3. From 100 parts by weight of magnesium oxide, aluminum sulfate, ferrous sulfate, polyaluminum chloride, sodium acid sulfate, sulfamic acid, polyacrylic acid, ammonium sulfate, alum, calcined amber and zinc sulfate. acidic agent 5-50 in a mixture consisting of selected one or 10 to 100 parts by weight of two or more solidifying agent from the group consisting
% By weight and 0.1 to 2.0% by weight of an organic polymer flocculant and / or a water absorbing agent are added to the soil solidifying agent.
に更に固化促進剤を０．３〜１０．０重量％添加したこ
とを特徴とする土壌固化剤4. A soil solidifying agent comprising the soil solidifying agent according to claim 1, further containing 0.3 to 10.0% by weight of a solidifying accelerator.
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４に記載の土壌固化剤5. The soil solidifying agent according to claim 4, wherein the solidification accelerator is a compound capable of reacting with water to generate carbon dioxide gas and / or a polyvalent metal salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03846999A JP3479715B2 (en) | 1999-02-17 | 1999-02-17 | Soil solidifying agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03846999A JP3479715B2 (en) | 1999-02-17 | 1999-02-17 | Soil solidifying agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000239660A JP2000239660A (en) | 2000-09-05 |
| JP3479715B2 true JP3479715B2 (en) | 2003-12-15 |
Family
ID=12526111
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03846999A Expired - Fee Related JP3479715B2 (en) | 1999-02-17 | 1999-02-17 | Soil solidifying agent |
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| Country | Link |
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| JP (1) | JP3479715B2 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4564647B2 (en) * | 2000-11-29 | 2010-10-20 | 松田技研工業株式会社 | Soil solidifying agent |
| JP4562929B2 (en) * | 2001-02-14 | 2010-10-13 | 独立行政法人農業・食品産業技術総合研究機構 | Cement composition |
| JP2003047388A (en) * | 2001-08-06 | 2003-02-18 | Ybk Kogyo:Kk | Material for preventing growth of weed and method for constructing layer for preventing growth of weed on ground using the same |
| JP2003064361A (en) * | 2001-08-29 | 2003-03-05 | Matsuda Giken Kogyo Kk | Soil hardener |
| JP4990865B2 (en) * | 2001-11-30 | 2012-08-01 | 松田技研工業株式会社 | Solidified insolubilizer for soil and soil treatment method |
| JP4174818B2 (en) * | 2002-10-09 | 2008-11-05 | 三菱マテリアル株式会社 | Granulated soil |
| JP2005154735A (en) * | 2003-11-07 | 2005-06-16 | Matsuda Giken Kogyo Kk | Soil solidification agent, soil pavement material and soil paving process |
| JP2006219547A (en) * | 2005-02-09 | 2006-08-24 | Matsuda Giken Kogyo Kk | Soil-solidifying material |
| JP4837936B2 (en) * | 2005-04-20 | 2011-12-14 | 宇部興産株式会社 | Low alkali solidification material for hydrous soil and solidification treatment method |
| JP4841912B2 (en) * | 2005-09-20 | 2011-12-21 | 宇部マテリアルズ株式会社 | Magnesium oxide powder for soil hardening material |
| JP5362171B2 (en) * | 2005-12-13 | 2013-12-11 | 宇部マテリアルズ株式会社 | Soil hardening material |
| JP5072726B2 (en) * | 2008-06-15 | 2012-11-14 | 株式会社Ｈｉ−Ｖａｎ | Manufacturing method of molded body, repair method using the manufacturing method, and flame-retardant imparting material containing powder of the molded body |
| JP5718562B2 (en) * | 2009-10-30 | 2015-05-13 | 鹿島建設株式会社 | Soil stabilization treatment material and soil stabilization treatment method using the same |
| JP5748015B1 (en) * | 2014-04-03 | 2015-07-15 | 宇部興産株式会社 | Insolubilizer and insolubilization method |
| JP6713354B2 (en) * | 2016-06-17 | 2020-06-24 | 太平洋セメント株式会社 | Method of treating mud generated by shield method |
| JP7497116B2 (en) | 2019-07-10 | 2024-06-10 | 松田技研工業株式会社 | Soil solidification agent |
| CN115502181A (en) * | 2022-10-21 | 2022-12-23 | 中海油田服务股份有限公司 | Weak curing agent, and preparation method, use method and application thereof |
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