JP5645199B2 - Method for producing lightweight soil-solidifying material and soil-solidifying material for lightweight banking - Google Patents
Method for producing lightweight soil-solidifying material and soil-solidifying material for lightweight banking Download PDFInfo
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- JP5645199B2 JP5645199B2 JP2010034241A JP2010034241A JP5645199B2 JP 5645199 B2 JP5645199 B2 JP 5645199B2 JP 2010034241 A JP2010034241 A JP 2010034241A JP 2010034241 A JP2010034241 A JP 2010034241A JP 5645199 B2 JP5645199 B2 JP 5645199B2
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- 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
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
本発明は、土木工事における軽量盛土を簡便に行うため、工事現場周辺土壌に添加混合することにより軽量盛土とするための土壌固化材に関するものである。 TECHNICAL FIELD The present invention relates to a soil solidifying material for making light weight embankment by adding and mixing to soil around a construction site in order to easily perform light weight embankment in civil engineering work.
急峻な斜面が多い我国においては、斜面を横切る形での道路建設が非常に多く、その際、山側を削ると共に斜面の谷側に盛土することにより水平面を作ることにより道路としているが、重量のある土壌を利用した場合には自らの重量により崩落の危険性が高まる。出来る限り軽量でありながら建設汚泥処理土の適用用途標準第３種の強度標準を保つ土壌の開発が待たれているところであった。 In Japan, where there are many steep slopes, there are many road constructions that cross the slopes. At that time, the road is made by creating a horizontal plane by cutting the mountain side and embedding it on the valley side of the slope. When a certain soil is used, the risk of collapsing increases due to its own weight. The development of a soil that is as light as possible while maintaining the strength standard of the third type of application standard for construction sludge treatment soil has been awaited.
一般的には、石灰を混入するかセメントを混入することにより強度を保つ方法が採用されている。建設汚泥処理土の適用用途標準第３種の強度標準は得られているが、比重が高くなるため、路肩を強化する工事にコストが高くなる弱点を有していた。 Generally, a method of maintaining strength by mixing lime or cement is employed. Although the third standard of application standard for application of construction sludge treated soil has been obtained, it has a weak point that the construction cost to increase the shoulder is high because the specific gravity is high.
また、軽量化した盛土を使う方法も開発されているが、現場への盛土の搬入が必要となり費用が高くなることが避けられない。 Moreover, although a method using a lighter embankment has been developed, it is inevitable that the embedding of the embankment to the site is necessary and the cost is increased.
一方、我国では、狭い国土を有効利用するため、氾濫平野や腐植土の堆積した軟弱な地盤であっても、道路を作る、または住宅を建設するという活用がなされているが、地盤自体の重量や構築物の重量により不等沈下を引き起こすことがあった。 On the other hand, in Japan, in order to make effective use of a small land, even if it is a soft ground with flood plains and humus soil, it is used to build roads or build houses, but the weight of the ground itself And the weight of the structure could cause uneven settlement.
この場合には、一般的には、必要な強度を得るため地下深くまで強固な基礎を築く方法がとられているが、多大な手間と費用を要するだけでなく、基礎自体の重量により、不等沈下を引き起こすことがあった。地盤を軽量化しながら建設汚泥処理土の適用用途標準第３種の強度標準を得る方法の開発が待たれていた。 In this case, generally, in order to obtain the required strength, a method of constructing a solid foundation deep underground is taken, but not only does it require a great deal of labor and cost, but also due to the weight of the foundation itself. It sometimes caused equal settlement. The development of a method for obtaining the strength standard of the third application standard of construction sludge treatment soil while reducing the weight of the ground has been awaited.
水路の法面は、一般的に土壌を突き固めて作られているが、傾斜がきつく強度がないため自重により崩落しやすい。土壌を加えて再度突き固めて補修するが、強度・傾斜とも変わらないため、再崩落を繰り返す傾向にある。法面土壌を軽量化し、建設汚泥処理土の適用用途標準第３種の強度標準を増す工法の開発が待たれていた。 The slope of the waterway is generally made by solidifying the soil, but it is easy to collapse due to its own weight because there is no strength with a strong slope. The soil is added and solidified again for repair, but the strength and slope do not change, so there is a tendency for repeated collapse. The development of a construction method that reduces the weight of the slope soil and increases the strength standard of the type 3 application standard of construction sludge treatment soil has been awaited.
建築物解体現場で多量に発生し、処分に困っている廃石膏ボード破砕物と高炉セメント、または廃石膏ボード破砕物と高炉セメント・フライアッシュ混合物、または廃石膏ボード破砕物と高炉セメント・リモナイト混合物を、混練して得られた混合物を現場で得られる土壌に混入することにより、現場土壌を固化し建設汚泥処理土の適用用途標準第３種の強度標準を得ながら、軽量化する技術が本発明である。 Waste gypsum board crushed and blast furnace cement, waste gypsum board crushed and blast furnace cement / fly ash mixture, or waste gypsum board crushed and blast furnace cement / limonite mixture By mixing the mixture obtained by kneading into the soil obtained at the site, the technology to reduce the weight while solidifying the soil at the site and obtaining the strength standard of the third application standard of construction sludge treatment soil It is an invention.
解決しようとする問題点は、シルト状の土壌に石膏を混入しても建設汚泥処理土の適用用途標準第３種の強度標準が得られず、また、無酸素状態に埋め込まれた状態で硫化水素の発生を防止する方法が確立されていない点である。 The problem to be solved is that even if gypsum is mixed in silt-like soil, the third standard of strength for application of construction sludge treated soil cannot be obtained, and it is sulfided in an oxygen-free state. There is no established method for preventing the generation of hydrogen.
本発明は、粉砕された廃石膏ボードに高炉セメント単体、または高炉セメントとフライアッシュ混合物、または高炉セメントとリモナイト混合物を混合して製造された軽量盛土用土壌固化材を使用することを主要な特徴とする。 The main feature of the present invention is to use a lightweight solidification material for embankments produced by mixing blast furnace cement alone, a blast furnace cement and fly ash mixture, or a blast furnace cement and limonite mixture on a ground waste gypsum board. And
第１の発明は、付着している紙を除去して粉砕された廃石膏ボードに、高炉セメントを重量比で４％ないし１０％の範囲で混練して軽量盛土用土壌固化材を製造することを主要な特徴とする。 1st invention manufactures the soil solidification material for light weight embankment by knead | mixing the blast furnace cement in the range of 4 to 10% by weight ratio to the waste gypsum board which removed the adhering paper and grind | pulverized. Is the main feature.
第２の発明は、付着している紙を除去して粉砕された廃石膏ボードに、高炉セメントとフライアッシュを重量比１：１の割合で混合した混合物を、重量比で４％ないし１０％の範囲で混練して軽量盛土用土壌固化材を製造することを主要な特徴とする。 According to a second aspect of the present invention , a mixture obtained by mixing blast furnace cement and fly ash at a weight ratio of 1: 1 to waste gypsum board that has been crushed by removing adhering paper is 4% to 10% by weight. The main feature is to produce a lightweight soil-solidifying material by kneading in the range of .
第３の発明は、付着している紙を除去して粉砕された廃石膏ボードに、高炉セメントとリモナイトを重量比１：１の割合で混合した混合物を、重量比で４％ないし１０％の範囲で混練して軽量盛土用土壌固化材を製造することを主要な特徴とする。 According to a third aspect of the present invention , a mixture obtained by mixing blast furnace cement and limonite at a ratio of 1: 1 by weight to waste gypsum board that has been crushed by removing the adhering paper is 4% to 10% by weight. The main feature is to produce a lightweight soil-solidifying material by kneading in a range .
本発明の軽量盛土用土壌固化材を使用した軽量盛土は、建設汚泥処理土の適用用途標準第３種の強度標準を満たすだけでなく比重０．８程度という従来にない軽量性を有する。このため、斜面に道路を建設する際の路肩を強化する工事の低減にもつながり、また軟弱地盤を軽量化しながら必要強度を得るという利点を持つ。さらに、年間１００万トン以上排出され、その大部分が最終処分場に埋立処分されていたため、最終処分場の不足原因となっていた廃石膏ボードの有効活用という利点を併せ持つ。 The light weight embankment using the soil solidifying material for light weight embankment of the present invention not only satisfies the third strength standard of application standard of construction sludge treated soil but also has an unprecedented lightness of about 0.8 specific gravity. For this reason, it leads to the reduction of the work which strengthens the shoulder at the time of constructing a road on a slope, and also has the advantage of obtaining the required strength while reducing the weight of the soft ground. In addition, more than 1 million tons are discharged annually, and most of it is landfilled at the final disposal site. This also has the advantage of effective use of the waste gypsum board that has caused the shortage of the final disposal site.
シルト状土壌を用いて、現地において建設汚泥処理土の適用用途標準第３種の強度標準を満たす軽量盛土工事を施工するという目的を、廃石膏ボードを基材とする混合物を添加することにより、資材移動量及び作業量を少なくし、かつ硫化水素の発生を抑制しながら実施できるようにした。 By adding a mixture based on waste gypsum board for the purpose of constructing a lightweight embankment that meets the strength standard of type 3 application standard of construction sludge treatment soil in the field using silt-like soil, It was made possible to carry out while reducing the amount of material movement and work, and suppressing the generation of hydrogen sulfide.
異物および付着している紙を除去した廃石膏ボードを粉砕し、混練機に投入した後、高炉セメントを加え混練した。 The waste gypsum board from which foreign substances and adhering paper were removed was pulverized, put into a kneader, and then kneaded with blast furnace cement.
高炉セメントは、太平洋セメント製のジオセット２００を使用し、廃石膏ボードに対し、重量比で４％ないし１０％の範囲で添加するが、６％を添加するのが軽量盛土用土壌固化材として望ましい。 Blast furnace cement uses Geoset 200 made by Taiheiyo Cement, and is added in a range of 4% to 10% by weight with respect to the waste gypsum board, but 6% is added as a soil solidifying material for lightweight embankment. desirable.
この軽量盛土用土壌固化材１００ｇに、河川水に石膏および紙片を加え３５℃の条件で硫酸還元菌を培養した溶液５ｇを加え、３５℃環境で一週間保温したが、硫化水素の発生は見られなかった。 5 g of a solution obtained by adding gypsum and paper pieces to river water and cultivating sulfate-reducing bacteria under conditions of 35 ° C. was added to 100 g of this lightweight embankment soil-solidifying material , and kept at 35 ° C. for one week. I couldn't.
この軽量盛土用土壌固化材は、使用時まで乾燥状態で保管し、工事現場において１立米のシルトに対し、１００ｋｇないし２００ｋｇの割合で混合して盛土として使用する。 This light-weight embankment soil solidifying material is stored in a dry state until use, and is used as embankment at a construction site by mixing at a rate of 100 kg to 200 kg with respect to 1 standing rice silt.
そのような軽量盛土は、比重が０．８程度となり、建設汚泥処理土の適用用途標準第３種の強度標準を満たす。 Such lightweight embankment has a specific gravity of about 0.8 and satisfies the strength standard of the application use standard type 3 of construction sludge treatment soil.
異物および付着している紙を除去した廃石膏ボードを粉砕し、混練機に投入した後、高炉セメントおよびフライアッシュを加え混練した。 The waste gypsum board from which foreign substances and adhering paper were removed was pulverized and put into a kneader, and then blast furnace cement and fly ash were added and kneaded.
高炉セメントは太平洋セメント製のジオセット２００、フライアッシュは九州電力苓北発電所のフライアッシュを重量比１対１の割合で混合したものを使用し、廃石膏ボードに対し、重量比で４％ないし１０％の範囲で添加するが、６％を添加するのが軽量盛土用土壌固化材として望ましい。 Blast furnace cement uses Geocete 200 made by Taiheiyo Cement, and fly ash is a mixture of fly ash from the Kyushu Electric Power Shohoku Power Plant in a ratio of 1: 1 to 4% by weight relative to the waste gypsum board. Although it adds in 10% of range, adding 6% is desirable as a soil solidification material for lightweight banking .
この軽量盛土用土壌固化材１００ｇに、河川水に石膏および紙片を加え３５℃の条件で硫酸還元菌を培養した溶液５ｇを加え、３５℃環境で一週間保温したが、硫化水素の発生は見られなかった。 5 g of a solution obtained by adding gypsum and paper pieces to river water and cultivating sulfate-reducing bacteria under conditions of 35 ° C. was added to 100 g of this lightweight embankment soil-solidifying material , and kept at 35 ° C. for one week. I couldn't.
この軽量盛土用土壌固化材は、使用時まで乾燥状態で保管し、工事現場において１立米のシルトに対し、１００ｋｇないし２００ｋｇの割合で混合して盛土として使用する。 This light-weight embankment soil solidifying material is stored in a dry state until use, and is used as embankment at a construction site by mixing at a rate of 100 kg to 200 kg with respect to 1 standing rice silt .
そのような軽量盛土は、比重が０．８程度となり、建設汚泥処理土の適用用途標準第３種の強度標準を満たす。 Such lightweight embankment has a specific gravity of about 0.8 and satisfies the strength standard of the application use standard type 3 of construction sludge treatment soil.
異物および付着している紙を除去した廃石膏ボードを粉砕し、混練機に投入した後、高炉セメントおよびリモナイトを加え混練した。 The waste gypsum board from which foreign substances and adhering paper were removed was pulverized and put into a kneader, and then kneaded with blast furnace cement and limonite.
高炉セメントは太平洋セメント製のジオセット２００、リモナイトは日本リモナイト製のリモニドを重量比１対１の割合で混合したものを使用し、廃石膏ボードに対し、重量比で４％ないし１０％の範囲で添加するが、６％を添加するのが軽量盛土用土壌固化材として望ましい。 Blast furnace cement uses Geoset 200 made by Taiheiyo Cement, and Limonite uses a mixture of limonide made by Nihon Limonite at a weight ratio of 1: 1, and ranges from 4% to 10% by weight with respect to waste gypsum board. However, it is desirable to add 6% as a lightweight solidifying material for embankments .
この軽量盛土用土壌固化材１００ｇに、河川水に石膏および紙片を加え３５℃の条件で硫酸還元菌を培養した溶液５ｇを加え、３５℃環境で一週間保温したが、硫化水素の発生は見られなかった。 5 g of a solution obtained by adding gypsum and paper pieces to river water and cultivating sulfate-reducing bacteria under conditions of 35 ° C. was added to 100 g of this lightweight embankment soil-solidifying material , and kept at 35 ° C. for one week. I couldn't.
この軽量盛土用土壌固化材は、使用時まで乾燥状態で保管し、工事現場において１立米のシルトに対し、１００ｋｇないし２００ｋｇの割合で混合して盛土として使用する。 This light-weight embankment soil solidifying material is stored in a dry state until use, and is used as embankment at a construction site by mixing at a rate of 100 kg to 200 kg with respect to 1 standing rice silt.
そのような軽量盛土は、比重が０．８程度となり、建設汚泥処理土の適用用途標準第３種の強度標準を満たす。 Such lightweight embankment has a specific gravity of about 0.8 and satisfies the strength standard of the application use standard type 3 of construction sludge treatment soil.
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| JP2003313554A (en) * | 2002-04-25 | 2003-11-06 | Yagi Unso:Kk | Method for treating mud by utilizing waste gypsum board |
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