JPH08283717A - Modifier for soil of excavation - Google Patents
Modifier for soil of excavationInfo
- Publication number
- JPH08283717A JPH08283717A JP7111244A JP11124495A JPH08283717A JP H08283717 A JPH08283717 A JP H08283717A JP 7111244 A JP7111244 A JP 7111244A JP 11124495 A JP11124495 A JP 11124495A JP H08283717 A JPH08283717 A JP H08283717A
- Authority
- JP
- Japan
- Prior art keywords
- modifier
- soil
- water
- fibers
- lime
- 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
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、掘削泥土の改質剤に関
する。さらに詳しくは、本発明は、石油井、ガス井、地
熱井、トンネル工事、浚渫工事、建設工事、その他の工
事現場で発生する掘削泥土や、ヘドロ、スラッジ類を、
再利用又は廃棄が容易な形態に改質することができる掘
削泥土の改質剤に関する。FIELD OF THE INVENTION The present invention relates to a modifying agent for excavated mud. More specifically, the present invention is an oil well, a gas well, a geothermal well, a tunnel work, a dredging work, a construction work, excavated mud generated at other construction sites, sludge, sludge,
The present invention relates to a drilling mud modifier that can be modified into a form that can be easily reused or discarded.
【０００２】[0002]
【従来の技術】土木工事、建設工事、浚渫工事等におい
て発生する掘削泥土は、含水量が多く流動性に富むた
め、通常のダンプカーやトラック等による運搬作業を困
難なものとしている。このため、従来はこれら含水泥土
に石灰あるいはセメント系の固化剤を混合して処理した
り、水溶性高分子化合物又は高吸水性樹脂を混合して処
理している。石灰あるいはセメント系固化剤を用いて、
含水率の高い掘削泥土を処理する場合、処理後の掘削泥
土が流動性を失い、取扱いが容易な強度に達するまでに
は通常数十時間を要し、掘削泥土１トン当たり１００kg
以上の大量の固化剤を添加しても、高含水率の掘削泥土
を短時間には処理できないという問題がある。一方、水
溶性高分子化合物又は高吸水性樹脂等のみを用いて、含
水率の高い掘削泥土を処理する場合、処理後の掘削泥土
が流動性を失うまでの時間は、水溶性高分子化合物又は
高吸水性樹脂添加後数分以内と短時間であるが、掘削泥
土の含水率が非常に高い場合や、掘削泥土が粘性土又は
有機性土である場合、処理土の強度が十分には高くなら
ないという欠点がある。2. Description of the Related Art Excavated mud generated in civil engineering work, construction work, dredging work, etc., has a high water content and a high fluidity, which makes it difficult to carry it by ordinary dump trucks and trucks. For this reason, conventionally, hydrate or cement-based solidifying agents are mixed with the hydrous mud and treated, or a water-soluble polymer compound or a superabsorbent resin is mixed and treated. Using lime or cement-based solidifying agent,
When treating excavated mud with a high water content, the excavated mud after treatment loses its fluidity, and it usually takes several tens of hours until it reaches a strength that makes it easy to handle.
Even if a large amount of the above solidifying agent is added, there is a problem that excavated mud having a high water content cannot be treated in a short time. On the other hand, when only the water-soluble polymer compound or the super absorbent resin is used to process the excavated mud with a high water content, the time until the excavated mud after the treatment loses fluidity is Although it is a short time within a few minutes after adding the super absorbent resin, the strength of the treated soil is sufficiently high when the water content of the excavated mud is very high or the excavated mud is cohesive soil or organic soil. It has the drawback of not becoming.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、含水量の多
い掘削泥土に添加することにより、短時間でその流動性
を失わせ、数時間後には重機等での作業が可能な強度
（ほぼ２kg／cm2）とし、さらに数十時間の養生後に
は、強度が大きく再利用の容易な処理土とすることがで
きる掘削泥土の改質剤を提供することを目的としてなさ
れたものである。DISCLOSURE OF THE INVENTION According to the present invention, the fluidity of excavated mud containing a large amount of water is lost in a short time, and after a few hours, the workability of heavy equipment can be reduced (almost). The purpose of the present invention is to provide a modifier for excavated mud, which has a strength of 2 kg / cm 2 ) and, after curing for several tens of hours, can be treated soil that is strong and easy to reuse.
【０００４】[0004]
【課題を解決するための手段】本発明者は、上記の課題
を解決すべく鋭意研究を重ねた結果、掘削泥土の改質剤
に繊維状物質を含有せしめることにより、繊維状物質の
有する吸水効果、繊維構造による補強効果等により、短
時間で取扱いの容易な処理土が得られること見いだし、
この知見に基づいて本発明を完成するに至った。すなわ
ち、本発明は、（１）繊維状物質と、水硬性セメント又
は石灰とを含有することを特徴とする掘削泥土の改質
剤、（２）繊維状物質が紙粉砕物である第(１)項記載の
掘削泥土の改質剤、及び、（３）繊維状物質が椰子がら
粉砕物である第(１)項記載の掘削泥土の改質剤、を提供
するものである。さらに、本発明の好ましい態様とし
て、（４）繊維状物質と水硬性セメント又は石灰の重量
比が、１：１０〜１０：１である第(１)〜(３)項記載の
掘削泥土の改質剤、（５）水溶性高分子化合物を含有す
る第(１)〜(４)項記載の掘削泥土の改質剤、（６）繊維
状物質及び水硬性セメント又は石灰の合計量と水溶性高
分子化合物の重量比が、１：１〜１００：１である第
(５)項記載の掘削泥土の改質剤、（７）無機多孔性物質
及び膨潤性粘土鉱物から選ばれる１種又は２種以上の物
質を含有する第(１)〜(６)項記載の掘削泥土の改質剤、
及び（８）繊維状物質と水硬性セメント又は石灰の合計
量と無機多孔性物質又は膨潤性粘土鉱物の重量比が、
１：６０〜２０：１である第(７)項記載の掘削泥土の改
質剤、を挙げることができる。Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has found that a fibrous substance contained in a modifying agent for excavated mud makes it possible to absorb water contained in the fibrous substance. It was found that the treated soil can be easily handled in a short time due to the effect, the reinforcing effect of the fiber structure, etc.
Based on this finding, the present invention has been completed. That is, the present invention provides (1) a modifying agent for excavated mud characterized by containing a fibrous substance and hydraulic cement or lime, and (2) the fibrous substance is a pulverized paper product. The present invention provides a modifying agent for excavated mud as described in (1) above, and (3) a modifier for excavated mud as described in (1) above, wherein the fibrous substance is a pulverized product of coconut palm. Further, as a preferred embodiment of the present invention, (4) the modification of the excavated mud according to (1) to (3), wherein the weight ratio of the fibrous substance to the hydraulic cement or lime is 1:10 to 10: 1. (5) Water-soluble polymeric compound, (5) Water-soluble polymer compound-containing modifier for excavated mud as described in (1) to (4), (6) Total amount of fibrous substance and hydraulic cement or lime and water solubility The weight ratio of the polymer compound is 1: 1 to 100: 1.
The excavated mud modifier according to item (5), (7) the inorganic porous substance and one or more substances selected from swelling clay minerals. Drilling mud modifier,
And (8) the weight ratio of the total amount of the fibrous substance and the hydraulic cement or lime to the inorganic porous substance or the swelling clay mineral is
The modifying agent for excavated mud according to the item (7), which is 1:60 to 20: 1, can be mentioned.
【０００５】本発明の改質剤は、石油井、ガス井、地熱
井、トンネル工事、浚渫工事、建設工事、その他の工事
現場で発生する掘削泥土や、ヘドロ、スラッジ類の改質
に使用することができる。本発明の改質剤によって処理
することができる掘削泥土の含水率の上限は特に問わ
ず、例えば、含水率が９０重量％に達するような高含水
率の掘削泥土も処理することができる。掘削泥土に対す
る改質剤の添加量は、掘削泥土の性状及び所望する処理
土の性状により適切に選ぶことができるが、通常は掘削
泥土に対し３０重量％以下で十分である。本発明に用い
る繊維状物質に特に制限はなく、例えば、綿、麻、パル
プ、ヤシ、羊毛、絹等の天然繊維、レーヨン、アセテー
ト等の再生繊維、ポリエステル、ポリアミド、アクリ
ル、ポリビニルアルコール、ポリオレフィン、ポリウレ
タン等の合成繊維、アスベスト、アタパルジャイト等の
鉱物繊維、ガラス繊維、炭素繊維、金属繊維等の無機繊
維等を挙げることができる。本発明において、繊維状物
質は１種を単独に使用することができ、あるいは２種以
上を併用することができる。繊維状物質はその特性とし
て吸水効果を有し、また繊維構造によって補強効果を発
揮するので、掘削泥土に繊維状物質を添加することによ
り急速に掘削泥土中の水分が吸収され、処理土は繊維に
よって補強されるので、強度の大きい、取扱いやすい固
化した処理土が得られる。本発明に用いる繊維状物質と
しては、紙粉砕物及び椰子がら粉砕物は吸水効果に優れ
るので、特に好適に使用することができる。紙粉砕物と
しては、古紙の粉砕物を有利に使用することができ、古
紙（故紙ともいう）としては、例えば、新聞あるいは雑
誌古紙等の低密度の古紙が好ましい。しかし、古紙はこ
れらに限らず、上質紙、中質紙、未晒し系古紙等や、新
しい紙の裁断くず等、その種類を問わず使用することが
できる。椰子がら粉砕物として使用する椰子がらの種類
には特に制限はなく、通常ココヤシの椰子がらを最も容
易に入手することができるが、その他アブラヤシ、サト
ウヤシ、ニッパヤシ等の椰子がらも同様に使用すること
ができる。The reforming agent of the present invention is used for reforming excavated mud, sludge and sludge generated in oil wells, gas wells, geothermal wells, tunnel construction, dredging construction, construction construction and other construction sites. be able to. The upper limit of the water content of excavated mud that can be treated with the modifier of the present invention is not particularly limited, and for example, excavated mud having a high water content such that the water content reaches 90% by weight can be treated. The amount of the modifier added to the excavated mud can be appropriately selected depending on the properties of the excavated mud and the properties of the desired treated soil, but 30% by weight or less is usually sufficient for the excavated mud. There is no particular limitation on the fibrous substance used in the present invention, for example, cotton, hemp, pulp, coconut, wool, natural fibers such as silk, rayon, recycled fibers such as acetate, polyester, polyamide, acrylic, polyvinyl alcohol, polyolefin, Examples thereof include synthetic fibers such as polyurethane, mineral fibers such as asbestos and attapulgite, inorganic fibers such as glass fibers, carbon fibers and metal fibers. In the present invention, the fibrous substances may be used alone or in combination of two or more. Since the fibrous substance has a water absorption effect as its characteristic and exerts a reinforcing effect by the fiber structure, the addition of the fibrous substance to the excavated mud causes rapid absorption of water in the excavated mud, and the treated soil is Since it is reinforced by, solidified treated soil having high strength and easy to handle is obtained. As the fibrous substance used in the present invention, pulverized paper and pulverized coconut palm are particularly preferable because they have excellent water absorbing effect. A crushed product of waste paper can be advantageously used as the crushed paper, and a low density waste paper such as newspaper or magazine waste paper is preferable as the used paper (also referred to as waste paper). However, the used paper is not limited to these, and can be used regardless of its type such as high-quality paper, medium-quality paper, unbleached used paper, cutting waste of new paper, and the like. There are no particular restrictions on the type of coconut palm used as a crushed coconut coconut, and coconut coconut is usually the easiest to obtain, but other coconut palms such as oil palm, sugar palm, and nippah palm should also be used. You can
【０００６】本発明に用いる水硬性セメントは、水と混
和した状態で水和硬化する性質を有するセメントであれ
ば特に制限なく使用することができる。水硬性とは、狭
義には、水に対する溶解度のきわめて小さい水和鉱物が
速やかに生成するために、セメントが水中においても水
和硬化する性質をいうが、本発明においては、水和鉱物
の水に対する溶解度がやや大きく、水中においては硬化
させることができない広義の水硬性セメントや、水和速
度が比較的ゆるやかで、石灰石等を加えて塩基性にする
ことにより顕著な水硬性を示すようになる潜在水硬性セ
メントも使用することができる。このような水硬性セメ
ントとしては、例えば、普通ポルトランドセメント、速
硬性ポルトランドセメント、その他の改良されたポルト
ランドセメント、アルミナセメント、高炉セメント、カ
ルシウムセメント、フライアッシュやポゾランを含有す
るセメント類等を挙げることができる。水硬性セメント
は、泥粒子や有機物質と反応あるいは物理的な吸着によ
る凝結効果、水和による脱水効果等により掘削泥土の水
分を吸収するので、強度の大きい、取扱いやすい固化し
た処理土が得られる。本発明に用いる石灰に特に制限は
なく、例えば、生石灰、消石灰、石灰系の土壌改質剤等
を挙げることができる。石灰は、泥粒子や有機物質と反
応あるいは物理的な吸着による凝結効果、水和による脱
水効果等により掘削泥土の水分を吸収するので、強度の
大きい、取扱いやすい固化した処理土が得られる。本発
明においては、１種の水硬性セメントを使用することが
でき、２種以上の水硬性セメントを使用することができ
る。また、１種の石灰を使用することができ、２種以上
の石灰を使用することができる。さらに、本発明におい
ては、１種以上の水硬性セメントと１種以上の石灰を併
用することができる。The hydraulic cement used in the present invention can be used without particular limitation as long as it is a cement which has a property of being hydrated and hardened when mixed with water. Hydraulic property, in a narrow sense, refers to a property that the cement is hydrated and hardened even in water because a hydrated mineral having extremely small solubility in water is rapidly produced. It has a relatively high solubility in water, and is a hydraulic cement in a broad sense that cannot be hardened in water, or has a relatively slow hydration rate, and when it is made basic by adding limestone, etc., it shows remarkable hydraulic properties. Latent hydraulic cements can also be used. Examples of such hydraulic cement include ordinary Portland cement, fast-setting Portland cement, other improved Portland cement, alumina cement, blast furnace cement, calcium cement, cements containing fly ash and pozzolan, etc. You can Hydraulic cement absorbs the water content of excavated mud by reacting with mud particles or organic substances or by the physical effect of coagulation, dehydration by hydration, etc., so that solidified treated soil with high strength and easy handling can be obtained. . The lime used in the present invention is not particularly limited, and examples thereof include quick lime, slaked lime, and lime-based soil modifier. Lime absorbs the water content of excavated mud by reacting with mud particles or organic substances or by physical adsorption, condensation by hydration, etc. Therefore, solidified treated soil with high strength and easy handling can be obtained. In the present invention, one type of hydraulic cement can be used, and two or more types of hydraulic cement can be used. Moreover, 1 type of lime can be used and 2 or more types of lime can be used. Further, in the present invention, one or more types of hydraulic cement and one or more types of lime can be used in combination.
【０００７】本発明の掘削泥土の改質剤には、必要に応
じて水溶性高分子化合物を含有せしめることができる。
使用する水溶性高分子化合物には特に制限はなく、例え
ば、デンプン、マンナン、アルギン酸ソーダ、ローカス
トビーンガム、グアーガム、ペクチン、キサンタンガ
ム、デキストラン、ゼラチン、ラムザンガム、ジェラン
ガム等の天然水溶性高分子化合物、ビスコース、メチル
セルロース、エチルセルロース、カルボキシメチルセル
ロース、ヒドロキシプロピルセルロース、カチオン化セ
ルロース、α化デンプン、カルボキシルデンプン、ジア
ルデヒドデンプン、カチオン化デンプン、デキストリ
ン、ブリティッシュゴム、カチオン化グアーガム、アニ
オン化グアーガム、メチルグリコールキトサン等の半合
成水溶性高分子化合物、ポリビニルアルコール、ポリビ
ニルピロリドン、ポリ（メタ）アクリルアミド、ポリ
（メタ）アクリル酸ソーダ、ポリエチレンオキサイド、
ポリビニルメチルエーテル等の合成水溶性高分子化合物
等を挙げることができる。これらの水溶性高分子化合物
は、１種を単独に使用することができ、あるいは２種以
上を併用することができる。水溶性高分子化合物は、増
粘効果、吸水効果、凝集効果等を有し、繊維状物質と水
硬性セメント又は石灰とを含有する掘削泥土の改質剤に
含有せしめたとき、効果的に掘削泥土を強度の大きい処
理土に変換する。本発明においては、繊維状物質と水硬
性セメント又は石灰の合計量と水溶性高分子化合物の割
合は、重量比で１：１〜１００：１であることが好まし
く、３：１〜３０：１であることがさらに好ましい。こ
れらの水溶性高分子化合物以外の物質であっても、親水
性であり、かつ増粘性、吸水性、凝集性等を有する物質
は、本発明に効果的に用いることができる。The modifier for excavated mud of the present invention may contain a water-soluble polymer compound, if necessary.
There is no particular limitation on the water-soluble polymer compound used, for example, starch, mannan, sodium alginate, locust bean gum, guar gum, pectin, xanthan gum, dextran, gelatin, ramzan gum, natural water-soluble polymer compounds such as gellan gum, bis. Of course, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, cationized cellulose, pregelatinized starch, carboxyl starch, dialdehyde starch, cationized starch, dextrin, British gum, cationized guar gum, anionized guar gum, methyl glycol chitosan, etc. Semi-synthetic water-soluble polymer, polyvinyl alcohol, polyvinylpyrrolidone, poly (meth) acrylamide, poly (meth) acrylate , Polyethylene oxide,
Examples thereof include synthetic water-soluble polymer compounds such as polyvinyl methyl ether. These water-soluble polymer compounds can be used alone or in combination of two or more. The water-soluble polymer compound has a thickening effect, a water absorption effect, a coagulation effect, etc., and when the water-soluble polymer compound is contained in the modifying agent for the drilling mud containing the fibrous substance and the hydraulic cement or lime, it is effectively drilled. Convert mud to treated soil with high strength. In the present invention, the weight ratio of the total amount of the fibrous substance and the hydraulic cement or lime to the water-soluble polymer compound is preferably 1: 1 to 100: 1, and 3: 1 to 30: 1. Is more preferable. Substances other than these water-soluble polymer compounds that are hydrophilic and have thickening properties, water absorption properties, cohesive properties, etc. can be effectively used in the present invention.
【０００８】本発明の改質剤においては、必要に応じ
て、無機多孔性物質及び膨潤性粘土鉱物から選ばれる１
種又は２種以上の物質を含有せしめることができる。本
発明に用いる無機多孔性物質としては、例えば、ゼオラ
イト、パーライト、バーミキュライト、珪藻土焼成物、
粘土鉱物多孔質焼成物、ケイ酸カルシウム焼成物等を挙
げることができる。無機多孔性物質は、空孔による吸水
効果、粒径による補強効果等により掘削泥土の固化に効
果を発揮する。本発明方法に用いる膨潤性粘土鉱物とし
ては、例えば、モンモリロナイト、バイデライト、ノン
トロナイト、サボナイト、ヘクトライト、ソーコナイ
ト、スチーブンサイト、膨潤性雲母等を挙げることがで
きる。膨潤性粘土鉱物は、膨潤力による吸水効果、粘土
質による増粘効果等により掘削泥土を固化し、適度の強
度を与える。本発明において、繊維状物質及び水硬性セ
メント又は石灰の合計量と無機多孔性物質又は膨潤性粘
土鉱物の使用割合は、重量比で１：６０〜２０：１であ
ることが好ましく、１：１０〜１０：１であることがさ
らに好ましい。本発明の掘削泥土の改質剤の添加量は、
掘削泥土の土質あるいは含水率により異なり特に限定さ
れないが、通常は掘削泥土１トン当たり０.１〜２００k
gであり、好ましくは掘削泥土１トン当たり０.５〜１０
０kgである。本発明の改質剤の添加により、掘削泥土に
含まれる水分が吸収されるとともに、泥土粒子が凝結硬
化し、かつ繊維状物質等により補強されるので、取扱い
の容易な強度を有する固化した処理土となり、処理土の
再利用及び廃棄が容易となる。In the modifier of the present invention, 1 is selected from inorganic porous materials and swelling clay minerals, if necessary.
It may contain one or more substances. The inorganic porous material used in the present invention, for example, zeolite, perlite, vermiculite, fired diatomaceous earth,
Examples thereof include clay mineral porous fired products and calcium silicate fired products. The inorganic porous material exerts the effect of solidifying the excavated mud by the water absorption effect of the pores and the reinforcing effect of the particle size. Examples of the swelling clay mineral used in the method of the present invention include montmorillonite, beidellite, nontronite, savonite, hectorite, sauconite, stevensite, and swelling mica. The swelling clay mineral solidifies the excavated mud by the water absorption effect due to the swelling force, the thickening effect due to the clay quality, and the like, and imparts appropriate strength. In the present invention, the total amount of the fibrous substance and hydraulic cement or lime and the use ratio of the inorganic porous substance or the swelling clay mineral are preferably 1:60 to 20: 1 by weight ratio, and 1:10. More preferably, it is 10: 1. The amount of the modifying agent for the excavated mud of the present invention is
It varies depending on the soil quality or water content of the excavated mud and is not particularly limited, but usually 0.1 to 200 k per ton of excavated mud
g, preferably 0.5-10 per ton of drilling mud
It is 0 kg. By the addition of the modifier of the present invention, the water contained in the excavated mud is absorbed, and the mud particles are set and hardened and reinforced by the fibrous material, etc., so that the solidified treatment has a strength that is easy to handle. It becomes soil, and it is easy to reuse and dispose of the treated soil.
【０００９】本発明の改質剤は、繊維状物質、水硬性セ
メント、石灰、水溶性高分子化合物、無機多孔性物質、
膨潤性粘土鉱物等の各成分を、任意の順序で添加して使
用することができる。例えば、あらかじめ混合してワン
パック型改質剤として使用することができ、各成分をそ
れぞれ別々に掘削泥土に添加して使用することができ、
あるいは、各成分のうち何種かをあらかじめ混合し、残
余の成分を別々に添加して使用することができる。これ
らの添加方法のうち、ワンパック型改質剤として全成分
を同時に添加し、あるいは、水溶性高分子化合物を先に
添加したのち残余の成分を添加する方法が効果が良好で
あるので望ましい。本発明の改質剤において、繊維状物
質、水硬性セメント、石灰、水溶性高分子化合物、無機
多孔性物質及び膨潤性粘土鉱物は、ミル等を用いて粉砕
し、粒径を１mm以下とすれば特に効果的であるが、未粉
砕又は１mm以上の粒径の各成分も使用することができ
る。本発明の改質剤は、各成分が乾燥状態であるとき最
も高い効果を示すが、スラリー状、その他の形状でも使
用することができる。本発明の改質剤をスラリー状とす
れば、高粘性液体用ポンプで輸送することができる。本
発明の改質剤は、掘削泥土と無撹拌で接触させるだけで
も効果を奏するが、掘削泥土に添加したのち撹拌するこ
とにより、より高い効果を得ることができる。本発明の
掘削泥土の改質剤において、繊維状物質は、吸水効果及
び繊維構造による補強効果によって、高含水率の掘削泥
土を効果的に固化する。水硬性セメント及び石灰は、凝
結効果、水和による脱水効果等により、繊維状物質の効
果を高め、より強度のある改質土とし、雨水による処理
土の軟弱化を抑制する。水溶性高分子化合物は、吸水効
果、増粘効果、凝集効果等により、繊維状物質の効果を
高め、より強度のある改質土とし、水の遊離等も防止す
る。無機多孔性物質は、空孔による吸水効果、粒径によ
る補強効果等により、より低添加量でより効果的に掘削
泥土を固化する。膨潤性粘土鉱物は、膨潤力による吸水
効果、粘土質による増粘効果等により、より低添加量で
より効果的に掘削泥土を固化する。The modifier of the present invention includes fibrous substances, hydraulic cement, lime, water-soluble polymer compounds, inorganic porous substances,
Each component such as a swelling clay mineral can be added and used in any order. For example, it can be mixed in advance and used as a one-pack type modifier, and each component can be separately added to excavated mud for use.
Alternatively, some of the components may be mixed in advance and the remaining components may be added separately before use. Among these addition methods, a method of simultaneously adding all the components as a one-pack type modifier, or a method of adding the water-soluble polymer compound first and then adding the remaining components is preferable because the effect is good. In the modifier of the present invention, the fibrous substance, hydraulic cement, lime, water-soluble polymer compound, inorganic porous substance and swelling clay mineral are crushed using a mill or the like to have a particle size of 1 mm or less. Although it is particularly effective, it is also possible to use non-pulverized or each component having a particle size of 1 mm or more. The modifier of the present invention exhibits the highest effect when each component is in a dry state, but can be used in a slurry form or another form. If the modifier of the present invention is made into a slurry, it can be transported by a pump for high-viscosity liquid. The modifier of the present invention is effective even if it is brought into contact with excavated mud without stirring, but a higher effect can be obtained by adding it to excavated mud and then stirring it. In the modifying agent for excavated mud of the present invention, the fibrous substance effectively solidifies the excavated mud having a high water content due to the water absorbing effect and the reinforcing effect by the fiber structure. Hydraulic cement and lime enhance the effect of fibrous substances due to the setting effect, the dehydration effect due to hydration, etc., and become a stronger modified soil, and suppress the weakening of the treated soil by rainwater. The water-soluble polymer compound enhances the effect of the fibrous substance due to the water absorption effect, the thickening effect, the coagulation effect, etc., and becomes the stronger modified soil, and also prevents the release of water. The inorganic porous material solidifies the excavated mud more effectively with a smaller addition amount due to the water absorption effect due to the pores, the reinforcing effect due to the particle size, and the like. The swelling clay mineral solidifies the excavated mud more effectively with a lower addition amount due to the water absorption effect due to the swelling force, the thickening effect due to the clay quality, and the like.
【００１０】[0010]
【実施例】以下に、実施例を挙げて本発明をさらに詳細
に説明するが、本発明はこれらの実施例によりなんら限
定されるものではない。 実施例１ 容積５リットルのモルタルミキサーに、粉末粘土１,１
１１ｇと水道水８８９mlを取り、１分間撹拌し、含水率
４４.５重量％の泥土を調製した。この泥土に、ハンマ
ーミル（６mmφプレート使用）で乾式粉砕した新聞古紙
（以下「古紙粉砕物」という。）５０ｇ及びポルトラン
ドセメント５０ｇを同時に添加し、２分間撹拌した。４
時間後及び７２時間後に山中式土壌硬度計により処理土
の土壌強度を測定したところ、それぞれ１.９kg／cm2及
び８kg／cm2であった。 実施例２ ポルトランドセメント５０ｇの代わりに石灰系土壌改質
剤［(株)カルシード製、グリーンライムＬＣ］５０ｇを
使用した以外は、実施例１と全く同じ操作を繰り返し
た。４時間後及び７２時間後の処理土の土壌強度は、そ
れぞれ１.８kg／cm2及び８kg／cm2であった。 実施例３ 容積５リットルのモルタルミキサーに、粉末粘土１,１
１１ｇと水道水８８９mlを取り、１分間撹拌し、含水率
４４.５重量％の泥土を調製した。この泥土に、ハンマ
ーミル（２mmφプレート使用）で乾式粉砕した椰子がら
（以下「椰子がら粉砕物」という。）５０ｇ及びポルト
ランドセメント５０ｇを同時に添加し、２分間撹拌し
た。４時間後及び７２時間後に山中式土壌硬度計により
処理土の土壌強度を測定したところ、それぞれ１.７kg
／cm2及び１４kg／cm2であった。 実施例４ ポルトランドセメント５０ｇの代わりに石灰系土壌改質
剤［(株)カルシード製、グリーンライムＬＣ］５０ｇを
使用した以外は、実施例３と全く同じ操作を繰り返し
た。４時間後及び７２時間後の処理土の土壌強度は、そ
れぞれ１.５kg／cm2及び６kg／cm2であった。 比較例１ 容積５リットルのモルタルミキサーに、粉末粘土１,１
１１ｇと水道水８８９mlを取り、１分間撹拌し、含水率
４４.５重量％の泥土を調製した。この泥土に、ポルト
ランドセメント１００ｇを添加し、２分間撹拌した。４
時間後及び７２時間後に山中式土壌硬度計により処理土
の土壌強度を測定したところ、それぞれ０.６kg／cm2及
び４kg／cm2であった。 比較例２ ポルトランドセメント１００ｇの代わりに石灰系土壌改
質剤［(株)カルシード製、グリーンライムＬＣ］１００
ｇを使用した以外は、比較例１と全く同じ操作を繰り返
した。４時間後及び７２時間後の処理土の土壌強度は、
それぞれ０.７kg／cm2及び４kg／cm2であった。古紙粉
砕物とポルトランドセメント又は石灰系土壌改質剤を添
加した実施例１〜２及び椰子がら粉砕物とポルトランド
セメント又は石灰系土壌改質剤を添加した実施例３〜４
は、古紙粉砕物又は椰子がら粉砕物を添加していない比
較例１〜２よりも、いずれも高い土壌強度を示した。The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. Example 1 In a mortar mixer with a volume of 5 liters, powdered clay 1,1
11 g and 889 ml of tap water were taken and stirred for 1 minute to prepare a mud having a water content of 44.5% by weight. 50 g of newspaper waste paper (hereinafter referred to as "waste paper crushed product") dry-milled with a hammer mill (using a 6 mmφ plate) and 50 g of Portland cement were simultaneously added to this mud, and the mixture was stirred for 2 minutes. Four
Measurement of the soil strength of treated soil with time and after 72 hours in the mountains type soil hardness meter were respectively 1.9 kg / cm 2 and 8 kg / cm 2. Example 2 The same operation as in Example 1 was repeated except that 50 g of Portland cement was replaced with 50 g of a lime soil modifier [Green lime LC manufactured by Calceed Co., Ltd.]. Soil strength of treated soil after 4 hours and after 72 hours were respectively 1.8 kg / cm 2 and 8 kg / cm 2. Example 3 In a mortar mixer having a volume of 5 liters, powdered clay 1,1
11 g and 889 ml of tap water were taken and stirred for 1 minute to prepare a mud having a water content of 44.5% by weight. To this mud, 50 g of coconut spatula (hereinafter referred to as “coconut smash pulverized product”) dry-milled with a hammer mill (using a 2 mmφ plate) and 50 g of Portland cement were added at the same time and stirred for 2 minutes. The soil strength of the treated soil was measured with a Yamanaka soil hardness meter after 4 hours and 72 hours, and each was 1.7 kg.
/ Cm 2 and 14 kg / cm 2 . Example 4 The same procedure as in Example 3 was repeated except that 50 g of Portland cement was replaced with 50 g of a lime soil modifier [Green lime LC manufactured by Calceed Co., Ltd.]. Soil strength of treated soil after 4 hours and after 72 hours were respectively 1.5 kg / cm 2 and 6 kg / cm 2. Comparative Example 1 Powder clay 1,1 was added to a mortar mixer having a volume of 5 liters.
11 g and 889 ml of tap water were taken and stirred for 1 minute to prepare a mud having a water content of 44.5% by weight. 100 g of Portland cement was added to this mud and stirred for 2 minutes. Four
Measurement of the soil strength of treated soil with time and after 72 hours in the mountains type soil hardness meter were respectively 0.6 kg / cm 2 and 4 kg / cm 2. Comparative Example 2 Instead of 100 g of Portland cement, a lime soil modifier [Green lime LC] 100 manufactured by Calseed Co., Ltd. 100
The exact same operation as in Comparative Example 1 was repeated except that g was used. The soil strength of the treated soil after 4 hours and 72 hours is
They were 0.7 kg / cm 2 and 4 kg / cm 2 , respectively. Examples 1-2 with crushed waste paper and Portland cement or lime-based soil modifier and Examples 3-4 with coconut crushed powder and Portland cement or lime-based soil modifier
Showed higher soil strength than Comparative Examples 1 and 2 in which the pulverized waste paper or the pulverized palm coconut was not added.
【００１１】[0011]
【発明の効果】本発明の掘削泥土の改質剤によれば、石
油井、ガス井、地熱井、トンネル工事、浚渫工事、建設
工事、その他の工事現場で発生する掘削泥土や、ヘド
ロ、スラッジ類を、短時間で移送可能な形態とし、再利
用又は廃棄が容易な形態の処理土とすることができる。EFFECTS OF THE INVENTION According to the drilling mud modifier of the present invention, drilling mud, sludge and sludge generated in oil wells, gas wells, geothermal wells, tunnel construction, dredging construction, construction construction and other construction sites. It is possible to form the treated soil in a form that can be transferred in a short time and easily reused or discarded.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｋ 17/48 Ｂ０９Ｂ 3/00 ３０１Ｅ // Ｃ０９Ｋ 103:00 Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location C09K 17/48 B09B 3/00 301E // C09K 103: 00
Claims (3)
を含有することを特徴とする掘削泥土の改質剤。1. A modifier for excavated mud containing a fibrous substance and hydraulic cement or lime.
の掘削泥土の改質剤。2. The modifying agent for excavated mud according to claim 1, wherein the fibrous substance is a pulverized product of paper.
１記載の掘削泥土の改質剤。3. The modifier for excavated mud according to claim 1, wherein the fibrous substance is a pulverized product of coconut palm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11124495A JP3551424B2 (en) | 1995-04-12 | 1995-04-12 | Drilling mud strength modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11124495A JP3551424B2 (en) | 1995-04-12 | 1995-04-12 | Drilling mud strength modifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08283717A true JPH08283717A (en) | 1996-10-29 |
| JP3551424B2 JP3551424B2 (en) | 2004-08-04 |
Family
ID=14556247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11124495A Expired - Fee Related JP3551424B2 (en) | 1995-04-12 | 1995-04-12 | Drilling mud strength modifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3551424B2 (en) |
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| JP2000109829A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
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| JP2000109829A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
| JP2000109832A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
| JP2000109830A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
| JP2001064650A (en) * | 1999-08-30 | 2001-03-13 | Nichiha Corp | Soil improver and improvement of soil |
| JP2001121159A (en) * | 1999-10-29 | 2001-05-08 | Terunaito:Kk | Treatment method for boring waste muddy water |
| KR20010103300A (en) * | 2000-05-09 | 2001-11-23 | 문상운 | Composition for reclamation of waste matter and process for filling-up of reclaimed ground using the same |
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