JP2800063B2 - Sludge solidification material - Google Patents
Sludge solidification materialInfo
- Publication number
- JP2800063B2 JP2800063B2 JP14536690A JP14536690A JP2800063B2 JP 2800063 B2 JP2800063 B2 JP 2800063B2 JP 14536690 A JP14536690 A JP 14536690A JP 14536690 A JP14536690 A JP 14536690A JP 2800063 B2 JP2800063 B2 JP 2800063B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- mixed
- solidified
- water
- cement
- 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 - Lifetime
Links
Classifications
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、浚渫工事等において発生した浚渫ヘドロを
改良し、水中に再び打設して、有効利用を図る際に使用
するヘドロ固化材に関するものである。Description: TECHNICAL FIELD The present invention relates to a solidified sludge material which is used for improving dredged sludge generated in a dredging work or the like, driving it again in water, and using it effectively. Things.
（従来の技術） 海底地盤または海底堆積ヘドロ、湖沼河川等の水底地
盤または堆積ヘドロを固化するに当たり、ヘドロを寸浚
渫して、船上や陸上へ送り、同浚渫ヘドロにヘドロ固化
材を混合して、固化材混合ヘドロとし、同固化材混合ヘ
ドロを未だ固まらないうちに水中に打設して、埋め戻
し、固化して、地盤の形成や築堤を行う試みがある。(Conventional technology) When solidifying submarine ground or sedimentary sludge, submerged ground or sedimentary sludge such as lakes and rivers, the sludge is dredged, sent to ships or land, and the sludge solidified material is mixed with the dredged sludge. There has been an attempt to form a solidified mixed sludge, cast the solidified mixed sludge into water before it is solidified, backfill it, solidify it, and form a ground or embankment.
（発明が解決しようとする課題） しかしながら前記従来のヘドロ固化材には、埋め戻し
途中の固化材混合ヘドロに流動性や不分離性（固化材混
合ヘドロから土粒子や固化材粒子を分散させない性質）
賦与したり、埋め戻し後の固化材混合ヘドロに長期安定
性を賦与したりすることができなくて、固化材混合ヘド
ロを水中に打設すると、土粒子や固化材粒子が水中に分
散して、周辺の水質が汚濁するし、主目的である土砂ま
たはヘドロが水底に所定強度に固化されないという問題
があった。(Problems to be Solved by the Invention) However, the conventional sludge solidified material has fluidity and non-separation property in the solidified material mixed sludge in the middle of backfilling (the property of not dispersing soil particles and solidified material particles from the solidified material mixed sludge). )
It is not possible to give long-term stability to the solidified mixed sludge after backfilling, and if the solidified mixed sludge is poured into water, the soil particles and solidified material particles will be dispersed in the water. In addition, there is a problem that the surrounding water is polluted, and the main purpose, that is, earth and sand or sludge, is not solidified to a predetermined depth on the water floor.
本発明は前記の問題点に鑑み提案するものであり、そ
の目的とする処は、固化材混合ヘドロを水中に打設して
埋め戻す際、周辺の水質を汚濁させない上に、埋め戻し
た固化材混合ヘドロを水底に所定強度に固化できるヘド
ロ固化材を提供しようとする点にある。The present invention has been made in view of the above-described problems, and has as its object the purpose of pouring a solidified mixed sludge into water and backfilling the same so that the surrounding water quality is not polluted and the backfilled solidified It is an object of the present invention to provide a sludge solidified material capable of solidifying material mixed sludge on a water bottom with a predetermined strength.
（課題を解決するための手段） 前記の目的を達成するために、本発明は、浚渫ヘドロ
に混合して該混合ヘドロを水中に再び打設するためのヘ
ドロ固化材において、セメントを主材とし、同主材にポ
ゾラン物質、無機化合物、有機化合物を混合してなるこ
とを特徴としている。（請求項１）。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a sludge solidified material for mixing with dredged sludge and re-casting the mixed sludge into water, wherein cement is used as a main material. And a mixture of the main material with a pozzolanic substance, an inorganic compound, and an organic compound. (Claim 1).
前記請求項１記載のヘドロ固化材において、無機化合
物は、石灰類、仮焼ドロマイト、石膏、カルシウム塩、
硫酸塩、ベントナイト、酸化鉄の一種または複数種によ
り構成されている（請求項２）。The sludge solidifying material according to claim 1, wherein the inorganic compound is lime, calcined dolomite, gypsum, calcium salt,
It is composed of one or more of sulfate, bentonite, and iron oxide (claim 2).
前記請求項１記載のヘドロ固化材において、有機化合
物は、セルロース系、アクリル系、ポリアルキルスルホ
ン酸系、リグニンスルホン酸塩系、メラミンホルマリン
樹脂系、ポリオキシエチレンオキサイド系化合物、メラ
ミン樹脂、フエノール樹脂、ポリアクリル酸塩の一種ま
たは複数種により構成されている（請求項３）。2. The sludge solidifying material according to claim 1, wherein the organic compound is cellulose, acrylic, polyalkylsulfonic acid, ligninsulfonate, melamine formalin resin, polyoxyethylene oxide compound, melamine resin, phenol resin. , And one or a plurality of polyacrylates.
（作用） 本発明者等は特許第2622301号（特願平２−145365号
（特開平４−38311号公報））（発明の名称、浚渫ヘド
ロによる水中構造物の築造方法）において、セメントを
主材し、同主材にポゾラン物質、無機化合物、有機化合
物を混合してなるヘドロ固化材を浚渫ヘドロに混合し、
同混合物が未だ固まらない状態で水中に打設し、水底に
低強度構造物を築造することを特徴とする浚渫ヘドロに
よる水中構造物の築造方法を提案した。(Function) In the patent No. 2622301 (Japanese Patent Application No. 2-145365 (Japanese Unexamined Patent Application Publication No. 4-38311)) (name of the invention, a method of constructing an underwater structure by dredging sludge), the present inventors mainly used cement. The main material is mixed with a pozzolanic substance, an inorganic compound, and an organic compound.
We proposed a method for constructing underwater structures by dredging sludge, which is characterized by casting the mixture in water in a state where it is not yet solidified and constructing low-strength structures at the bottom of the water.
本発明は前記水中構造物の築造方法を実施する際に使
用するヘドロ固化材であって、主材のセメントにポゾラ
ン物質を混合することにより固化強度、長期安定性を賦
与するとともに、無機化合物及び有機化合物を混合する
ことにより安定性、流動性、不分離性を賦与するので、
浚渫ヘドロに混合して、固化材混合ヘドロとした後、水
中に打設すると、土粒子、固化材粒子が水中に分散しな
くて、水質の汚濁が防止されるし、水中構造物が水底に
所定強度に固化、築造される。The present invention is a sludge solidification material used when carrying out the method for building an underwater structure, solidification strength by mixing a pozzolanic substance in the cement of the main material, while imparting long-term stability, an inorganic compound and Stability, fluidity and inseparability are imparted by mixing organic compounds,
After mixing with the dredging sludge and forming the solidified material mixed sludge, when poured into water, the soil particles and the solidified material particles do not disperse in the water, preventing the pollution of water quality, and the underwater structure is placed on the bottom of the water It is solidified and built to a predetermined strength.
（実施例） 次に本発明のヘドロ固化材を実施例により具体的に説
明する。(Example) Next, the sludge solidification material of the present invention will be specifically described with reference to examples.
本発明は、浚渫ヘドロに混合して該混合ヘドロを水中
に再び打設するためのヘドロ固化材において、セメント
を主材とし、同主材にポゾラン物質、無機化合物、有機
化合物を混合してなることを特徴としている。The present invention provides a sludge solidified material for mixing with dredged sludge and driving the mixed sludge into water again, wherein cement is a main material, and a pozzolan substance, an inorganic compound, and an organic compound are mixed with the main material. It is characterized by:
セメントとしては、普通、早強、中庸熱のポルトラン
ドセメント、混合タイプの高炉、シリカ、フライアツシ
ユの各セメント、特殊セメントのアルミナ、超速硬、コ
ロイド、超微粒子の各セメントの一者または二者以上を
混合したセメントが使用される。As cement, one, two or more of Portland cement of normal, early strength, moderate heat, mixed type blast furnace, silica, fly ash cement, special cement alumina, ultra-fast hardening, colloid, ultra-fine particle cement Mixed cement is used.
ポゾラン物質としては、高炉水砕スラグ、転炉さい、
電気鉱さい、シリカフユーム、フライアツシユなどの人
口ポゾラン、関東ローム、シラス、タフなどの天然ポゾ
ランが使用される。Pozzolanic substances include granulated blast furnace slag, converter slag,
Electric pits, silica fumes, artificial pozzolans such as fly ash and natural pozzolans such as Kanto loam, shirasu and tough are used.
無機化合物としては、石灰類、仮焼ドロマイト、石
膏、カルシウム塩、硫酸塩、ベントナイト、酸化鉄の一
種または複数種が使用される。As the inorganic compound, one or more of limes, calcined dolomite, gypsum, calcium salts, sulfates, bentonite, and iron oxide are used.
有機化合物としては、セルローズ系（ヒドロキシブロ
ビルメチルセルロース、ヒドロキシエチルメチルセルロ
ース、ヒドロキシエチルセルロース等）、アクリル系
（ポリアクリルアミドの部分加水分解物、アクリルアミ
ドとアクリル酸ソーダの共重合体等）、ポリアルキルス
ルホン酸塩系、リグニンスルホン酸塩系、ポリオキシエ
チレンオキサイド系、メラミン樹脂、フエノール樹脂、
ポリアクリル酸塩の一種または複数種が使用される。Examples of the organic compound include cellulose (hydroxypropyl methylcellulose, hydroxyethylmethylcellulose, hydroxyethylcellulose, etc.), acrylic (partial hydrolyzate of polyacrylamide, copolymer of acrylamide and sodium acrylate, etc.), polyalkyl sulfonate System, lignin sulfonate system, polyoxyethylene oxide system, melamine resin, phenol resin,
One or more polyacrylates are used.
なお前記ヘドロ固化材の材料配合割合は次の通りとす
る。The compounding ratio of the sludge solidification material is as follows.
前記材料の配合割合は、ヘドロの土質と処理土の強度
や流動性等を考慮して決定される。 The mixing ratio of the materials is determined in consideration of the soil properties of the sludge and the strength and fluidity of the treated soil.
前記ヘドロ固化材の土砂またはヘドロに対する混合割
合は、改良設計強度に応じて決定されるが、概ね１〜25
重量％（このましくは４〜６重量％）である。The mixing ratio of the sludge solidified material to the earth or sand or sludge is determined according to the improved design strength.
% By weight (preferably 4 to 6% by weight).
次に海底ヘドロ（含水比300％、湿潤密度1.2g/cm2強
熱減量８％）500m2を浚渫し、この浚渫ヘドロと本発明
のヘドロ固化材とを陸上で混合し、この固化材混合ヘド
ロを海底に埋立材として埋め戻して、潜堤を築造した。Next, 500 m 2 of seabed sludge (water content ratio 300%, wet density 1.2 g / cm 2 loss on ignition 8%) was dredged, and the dredged sludge and the sludge solidified material of the present invention were mixed on land, and the solidified material was mixed. The sludge was buried on the seabed as a landfill and a submerged embankment was built.
このとき使用したヘドロ固化材の試験例を次に挙げ
る。A test example of the sludge solidified material used at this time is described below.
普通のポルトランドセメント50、高炉水砕スラグ40、
無水石膏4.5、消石灰４、ヒドロキシメチルセルローズ
0.2、ポリアクリル酸塩0.2、塩化カルシウム１（各重量
％）の配合からなるものを使用した。Ordinary Portland cement 50, granulated blast furnace slag 40,
Anhydrite 4.5, slaked lime 4, hydroxymethyl cellulose
A mixture of 0.2, polyacrylate 0.2, and calcium chloride 1 (each wt%) was used.
また前記ヘドロ固化材のヘドロに対する混合割合は、
５重量％とした。The mixing ratio of the sludge solidified material to the sludge is as follows:
It was 5% by weight.
また混合方法は、浚渫ヘドロにヘドロ固化材を粉末で
所定量混合し、５分間混合後、トレミー管を用いて水深
2mの海底に埋め戻し、築堤した。築堤時の汚濁は皆無で
あった。The mixing method is as follows. A predetermined amount of the sludge solidification material is mixed with the dredged sludge with powder, mixed for 5 minutes, and then drained using a tremy tube.
It was buried 2 m below the seabed and embanked. There was no pollution at the time of embankment.
また埋戻時の潜堤近傍の海水のpHは7.6で、作業直前
のpHとの差異は認められなかった。The pH of seawater near the submerged embankment at the time of backfilling was 7.6, which was not different from the pH immediately before the work.
（発明の効果） 本発明は前記のように浚渫ヘドロに混合して該混合ヘ
ドロを水中に再び打設するためのヘドロ固化材におい
て、セメントを主材とし、同主材にポゾラン物質、無機
化合物、有機化合物を混合してなり、上記のように主材
のセメントにポゾラン物質を混合することにより固化強
度、長期安定性を賦与するとともに、無機化合物及び有
機化合物を混合することにより安定性、流動性、不分離
性を賦与するので、浚渫ヘドロに混合して、固化材混合
ヘドロとした後、水中に打設すると、土粒子、固化材粒
子を水中に分散させることがなくて、水質の汚濁を防止
できるし、水中構造物を水底に所定強度に固化、築造で
きて、浚渫ヘドロの埋立場所を陸上に確保できない場所
のヘドロ処理に極めて有効である。(Effect of the Invention) The present invention relates to a sludge solidification material for mixing with dredged sludge as described above and for re-casting the mixed sludge into water, wherein cement is a main material, and a pozzolan substance and an inorganic compound are added to the main material. By mixing the organic compound, the solidification strength and long-term stability are obtained by mixing the pozzolanic substance with the main cement as described above, and the stability and fluidity are obtained by mixing the inorganic compound and the organic compound. Since it imparts separability and inseparability, it is mixed with dredging sludge to form solidified mixed sludge and then poured into water, without dispersing soil particles and solidified material particles in water, resulting in water pollution. In addition, the underwater structure can be solidified and built on the bottom of the water to a predetermined strength, and it is extremely effective for sludge treatment in places where landfill sites for dredged sludge cannot be secured on land.
また水中に築造した構造物は前記ヘドロ固化材により
所定の強度に固化されるので、有機汚染源の溶出や有害
物の溶出を抑制できる。Further, since the structure built in water is solidified to a predetermined strength by the sludge solidifying material, elution of organic pollution sources and elution of harmful substances can be suppressed.
また前記ヘドロ固化材を使用することにより、水中に
ヘドロによる潜堤や人口漁礁などを築造することができ
て、大量の浚渫ヘドロを有効に利用でき、またこの潜堤
や人口漁礁に海草等を植えれば、魚介類の生育等にも利
用できる。In addition, by using the sludge solidifying material, it is possible to build a submerged dike or artificial reef due to sludge underwater, and it is possible to effectively use a large amount of dredged sludge, and to use seaweed or the like on the submerged dike or artificial reef. If planted, it can also be used for growing seafood.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 相良 昌男 東京都渋谷区千駄ケ谷４丁目６番15号 フジタ工業株式会社内 (72)発明者 下田 正雄 東京都中央区東日本橋１―７―12 小野 田ケミコ株式会社内 (72)発明者 木次 恭一 東京都中央区東日本橋１―７―12 小野 田ケミコ株式会社内 (56)参考文献 特開 昭61−227899（ＪＰ，Ａ) 特開 昭60−195052（ＪＰ，Ａ) 特公 昭57−52450（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masao Sagara 4-6-15 Sendagaya, Shibuya-ku, Tokyo Inside Fujita Industries Co., Ltd. (72) Inventor Masao Shimoda 1-7-12 Higashi-Nihonbashi, Chuo-ku, Tokyo Onoda Inside Chemiko Co., Ltd. (72) Kyoichi Kinji 1-7-12 Higashi Nihombashi, Chuo-ku, Tokyo Inside Onoda Chemiko Co., Ltd. (56) References JP-A-61-227899 (JP, A) JP-A-60- 195052 (JP, A) JP-B-57-52450 (JP, B2)
Claims (3)
に再び打設するためのヘドロ固化材において、セメント
を主材とし、同主材にポゾラン物質、無機化合物、有機
化合物を混合してなることを特徴としたヘドロ固化材。1. A sludge solidifying material for mixing with dredging sludge and driving the mixed sludge into water again, wherein cement is a main material, and a pozzolanic substance, an inorganic compound, and an organic compound are mixed with the main material. Sludge solidified material characterized by becoming.
ト、石膏、カルシウム塩、硫酸塩、ベントナイト、酸化
鉄の一種または複数種よりなる請求項１記載のヘドロ固
化材。2. The sludge solidifying material according to claim 1, wherein the inorganic compound comprises one or more of limes, calcined dolomite, gypsum, calcium salt, sulfate, bentonite, and iron oxide.
ル系、ポリアルキルスルホン酸系、リグニンスルホン酸
塩系、メラミンホルマリン樹脂系、ポリオキシエチレン
オキサイド系化合物、メラミン樹脂、フエノール樹脂、
ポリアクリル酸塩の一種または複数種よりなる請求項１
記載のヘドロ固化材。3. The organic compound includes cellulose, acrylic, polyalkyl sulfonic acid, lignin sulfonate, melamine formalin resin, polyoxyethylene oxide compound, melamine resin, phenol resin,
2. The method according to claim 1, which comprises one or more polyacrylates.
The sludge solidifying material described.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14536690A JP2800063B2 (en) | 1990-06-05 | 1990-06-05 | Sludge solidification material |
| US07/815,919 US5133806A (en) | 1990-06-05 | 1992-01-06 | Softy mud solidifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14536690A JP2800063B2 (en) | 1990-06-05 | 1990-06-05 | Sludge solidification material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0440298A JPH0440298A (en) | 1992-02-10 |
| JP2800063B2 true JP2800063B2 (en) | 1998-09-21 |
Family
ID=15383552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14536690A Expired - Lifetime JP2800063B2 (en) | 1990-06-05 | 1990-06-05 | Sludge solidification material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2800063B2 (en) |
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| JPH07100160B2 (en) * | 1992-03-12 | 1995-11-01 | 常盤建設株式会社 | Sludge processing method and processing agent and its equipment |
| JP2003321676A (en) * | 2002-05-02 | 2003-11-14 | Tomio Keisha Kk | Soil solidifier |
| JP2006111489A (en) * | 2004-10-14 | 2006-04-27 | Hakko Kogyo Kk | Solidification method and solidifying agent used in the same |
| KR100986498B1 (en) * | 2005-07-29 | 2010-10-08 | 에네르기아 에코 마테리아 가부시키가이샤 | Method 0f the solidification 0f soft soil |
| KR101008745B1 (en) * | 2005-08-10 | 2011-01-14 | 에네르기아 에코 마테리아 가부시키가이샤 | Mixing apparatus and method 0f soft soil solidification |
| JP4675937B2 (en) * | 2007-06-08 | 2011-04-27 | 八光工業株式会社 | Solidification method |
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| JP6168446B2 (en) * | 2013-03-28 | 2017-07-26 | 五洋建設株式会社 | Containment method for contaminated floating mud |
| JP6359322B2 (en) * | 2013-09-06 | 2018-07-18 | 株式会社トクヤマ | Hydraulic composition |
| CN105777052B (en) * | 2016-03-11 | 2018-06-29 | 中国葛洲坝集团基础工程有限公司 | A kind of self-solidifying is from steady composite earth, formation process and device |
| JP6340743B2 (en) * | 2017-04-28 | 2018-06-13 | 五洋建設株式会社 | Contained floating mud confinement method and solidification soil material underwater placing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847179B2 (en) * | 1980-09-11 | 1983-10-20 | 株式会社 白元 | Non-igniting pocket warmer manufacturing method |
| JPS60195052A (en) * | 1984-03-15 | 1985-10-03 | ダイセル化学工業株式会社 | Sludge solidifying material |
| JPS61227899A (en) * | 1985-04-02 | 1986-10-09 | Toshihiro Ijichi | Treatment of waste earth |
-
1990
- 1990-06-05 JP JP14536690A patent/JP2800063B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787624A (en) * | 2014-02-15 | 2014-05-14 | 江苏坤泽科技股份有限公司 | Environment-friendly type steel slag based sludge curing agent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0440298A (en) | 1992-02-10 |
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