Search Results 1-20 of 38

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  • Solidification/Stabilization of Arsenic in Red Mud upon Addition of Fe (III) or Fe (III) and Al (III) Dissolved in H<sub>2</sub>SO<sub>4</sub>

    Yang Dazhong , Sasaki Atsushi , Endo Masatoshi

    … <p>In the aluminum industry, as an alkaline waste, red mud is composed of Fe and Al. … It is difficult to safely dispose certain types of some arsenic-containing red mud owing to hazardous arsenic leaching. … Hence, the method of arsenic stabilization using Fe (III) or H<sub>2</sub>SO<sub>4</sub> … to reduce arsenic leaching from red mud was investigated. …

    Journal of Water and Environment Technology 16(2), 115-126, 2018

    J-STAGE 

  • The applicability as the construction materials of low permeable dredging mud improved by PS ash materials  [in Japanese]

    望月 美登志

    地盤工学シンポジウム論文集 地盤工学会 編 60, 69-72, 2016

  • STUDY OF SEDIMENTS STABILIZATION MECHANISM AND SOIL REACTIVITY BY GRANULATED COAL ASH UTILIZED TO COVERING MATERIAL IN SEDIMENTS WHERE SLUDGE DEPOSITED  [in Japanese]

    NAKAMOTO Kenji , NISHINA Haruki , MATSUO Toru , HINO Kazutoshi , HIBINO Tadashi

    … However, the material properties of GCA for soil reactivity and sediment stabilization have not been clarified. … The purpose of this study is to evaluate the sediment stabilization mechanism and the performance of sediments improvement by GCA utilized as covering material. … Laboratory experiments were carried out to evaluate the soil reactivity (e.g. chemical properties, CEC, phosphate absorption coefficient) and sediments stabilization mechanism by GCA covering method. …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 72(4), I_1027-I_1032, 2016

    J-STAGE 

  • EFFECTIVENESS OF GRANULATED COAL ASH ON MARINE ENVIRONMENTAL CREATION PROJECT AT HYAKKAN PORT  [in Japanese]

    HINO Kazutoshi , MASUDA Tatsuya , OIKAWA Takahito , NAKAMOTO Kenji , MITSUTA Kazuki , TAKIKAWA Kiyoshi

    …  Marine environmental creation project underway at Hyakkan port located in the east coast of Ariake Sea is aiming to improve the habitat for sea creature by making mud flat or shallow bottom with utilizing dredged soil. … At the result of test construction of granulated coal ash, that has past record as a substitute for sand, used as a ground stabilizer, we can confirm the effectiveness on the aspect of the ground stabilization and habitat for benthos. …

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 72(2), I_952-I_957, 2016

    J-STAGE 

  • Conservation of the Wall Painting Fragments Excavated from the Fortified City of Khulbuk in the Collection of the National Museum of Antiquities of Tajikistan  [in Japanese]

    杉原 朱美 , 藤澤 明 , 島津 美子 , 増田 久美 , 山内 和也

    … The painting,which used to be on the wall of a mud brick structure,was on the ground when it was discovered during excavation. … After stabilization of the surface, the back of the fragments was also consolidated and a new backing of TWF (triaxil woven fabric)which can support the fragments well was given. …

    保存科学 = Science for conservation (53), 135-150, 2014-03-26

    IR  DOI 

  • Sedimentation Characteristics of Bottom Ash and the Behavior of Organic Pollutants in a Sea Area Landfill Site  [in Japanese]

    Koga Daisaburo , Shimaoka Takayuki , Sakita Shogo

    … Fine particles generated in the sedimentation process formed flocks in seawater, and these subsequently formed the floating mud layer on the gravel layer that had settled and been deposited before this layer. … Floating mud presumably has an ignition loss twice that of gravel and contains many organic substances. … Eliminating the floating mud layer increases the amount of pollutants that elutes to the seawater from the gravel layer by 1.6 times. …

    Journal of the Japan Society of Material Cycles and Waste Management 25(0), 68-76, 2014

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  • Solidification of Soft Ariake Clay by Mixing with Fly Ash-Based Geopolymer

    SINOLUNGAN Meldi , KOUMOTO Tatsuya , KONDO Fumiyoshi , ZHAO Yuqing

    … Portland cement and lime, essential materials for construction and stabilization of soft soils, are said to discharge a large amount of carbon dioxide in the production process. … Alternative construction and stabilization materials which enable the decrease in the use of cement and lime, and hence lowers the carbon dioxide emission are strongly desired. …

    Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering 2008(257), 443-449,a1, 2008

    J-STAGE 

  • Stabilization of Tapping Hole Length by Controlling Blast Furnace Raceway Depth  [in Japanese]

    MATSUI Yoshiyuki , TADAI Rikizo , ITO Kenji , MATSUO Tadasu , NAGAI Nobuyuki , IMAI Takashi

    … Therefore, it is important to stabilize the length of mud (tapping hole length) which is plugged and formed by hole closing refractory (mud materials), but the phenomena of fluctuation of tapping hole length are not clarified. …

    Tetsu-to-Hagane 92(12), 926-931, 2006-12-01

    J-STAGE  References (8)

  • Improvement technology of mud pressure shield surplus soil  [in Japanese]

    西林 聖武 , 瀬野 健助 , 中島 誠三 [他]

    Proceedings of tunnel engineering, JSCE 16, 373-380, 2006-11

  • An Experimental Study on Strength of Fiber-Cement-Stabilized Mud by use of Paper Sludge and Durability for Drying and Wetting Tests  [in Japanese]

    MORI Masato , TAKAHASHI Hiroshi , KUMAKURA Koji

    … We have already developed the new recycling system for high-water content mud by using paper debris and powder polymer. … These features are due to the existence of the fibers in the modified soils.<BR>By the way, the amount of paper debris which is necessary in this method depends on the water content, and if the water content is very high, a huge amount of paper debris is necessary to modify the high water content mud. …

    Shigen-to-Sozai 122(6), 353-361, 2006-07-25

    J-STAGE  References (10) Cited by (1)

  • DEVELOPMENT OF BEARING WALL FOR TIMBER FRAME BY USING DRY MUD-PANELS(Structure)  [in Japanese]

    SUGIYAMA Ryota , SUZUKI Yoshiyuki , GOTOU Masami , MURAKAMI Hiroshi

    … The arakabe panel is a precast mud-wall consisting of mud, waste paper and solidifier. … By using arakabe panels instead of traditional mud-wall, it has advantages such as shortening of construction work and stabilization of quality. … From experiments, it is found that the bearing wall framed by arakabe panels has the larger deformability and bearing force than the traditional mud-wall. …

    AIJ Journal of Technology and Design 12(24), 125-130, 2006

    J-STAGE  AIJ  References (7) Cited by (2)

  • Stabilization of Tapping Hole Length by Controlling Blast Furnace Raceway Depth

    MATSUI Yoshiyuki , TADAI Rikizo , ITO Kenji , MATSUO Tadasu , NAGAI Nobuyuki , IMAI Takashi

    … Therefore, it is important to stabilize the length of mud (tapping hole length) which is plugged and formed by hole closing refractory (mud materials), but the phenomena of fluctuation of tapping hole length are not clarified. …

    ISIJ International 45(10), 1439-1444, 2005

    J-STAGE  Cited by (3)

  • FIELD TEST TO CONFIRM APPLICABILITY OF PREVENTING METHOD OF LEAKAGE UTILIZING EMBANKMENT SOIL IN OLD EARTH DAM  [in Japanese]

    FUKUSHIMA Shinji , KITAJIMA Akira , TANI Shigeru , HIROTA Osamu , SUMIKAWA Kaoru

    土木学会論文集 = Proceedings of JSCE (771), 249-264, 2004-09-21

    References (8)

  • Reinforcing Method of Steep and High Reservoir Embankment using Cement-stabilised Mud Soil

    fukushima shinji , tani shigeru , kitajima akira

    老朽化ため池内に堆積した底泥土を固化処理して築堤土として有効活用できる砕・転圧盛工法を急勾配かつ高堤体ため池の堤体補強に適用した事例を紹介するが、これは、固化処理底泥土により傾斜遮水ゾーンを築造して急勾配かつ堤高の大きい堤体を補強したものである。この傾斜遮水ゾーンは既設堤体との剛性差を抑制して堤体安定性を確保するために上・下層で強度を変えて、いわゆるゾーニングして築造したが、ここではこの採用したゾ …

    Proceedings of the Japan National Conference on Geotechnical Engineering JGS39(0), 777-778, 2004

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  • The Strength Characteristics on Stabilization of Muddy Soil in Crushed and Compacted Embankment Soil

    Kitajima Akira , Fukushima Shinnji , Tani Shigeru

    老朽化ため池の池内に堆積した底泥土を固化処理して築堤土として有効活用できる砕・転圧土の強度特性を調べて、通常の築堤土の強度特性との相違について考察した。砕・転圧土は高含水比である底泥土を原土としているため、せん断中に発生する過剰間隙水圧が大きいこと、粘着力が卓越して内部摩擦角の小さい強度特性を有していること、強度パラメータを求める場合には試験中の拘束圧レベルが重要であることがわかった。

    Proceedings of the Japan National Conference on Geotechnical Engineering JGS39(0), 775-776, 2004

    J-STAGE 

  • Recycling of Dredged Mud by Granular-Stbilization

    Ishihara Kimiaki , Hidaka Masao , Kawamura Takashi , Nishijima Takeo , Oya Michihiro

    河川の浚渫泥土は曝気乾燥法を主体として盛土材として利用されているようであるが、天候に左右されることや用地が狭いことなどの問題もあり、短時間に有効利用できる新技術が求められている。砕石微粉末(脱水ケーキ)の造粒固化技術を脱水改良された低い含水比の浚渫泥土に適用した。固化材にはセメント系固化材、中性化固化材を用い、砂~砂礫材料と同等程度の強度をもつ粒状材料を作製することができた。本文では、浚渫泥土の造 …

    Proceedings of the Japan National Conference on Geotechnical Engineering JGS39(0), 609-610, 2004

    J-STAGE 

  • Repairing Method of Embankment using Cement-stabilized Muddy Soil in Old Earth Dam

    TANI Shigeru , FUKUSHIMA Shinji , KITAJIMA Akira

    … Most of irrigation reservoir dams were mostly accumulated with a mud soil in reservoir that caused the pollution and the shortage of reserved water. … This mud soil generally is high-water-content and very soft clayey soil. … In order to make efficient use of such a problematic soil as embankment soil, we have developed a new type method to repair the deterioration embankment by means of the stabilized mud soil with cement stabilizer. …

    Journal of Japan Society of Dam Engineers 14(3), 177-188, 2004

    J-STAGE 

  • FIELD TEST TO CONFIRM APPLICABILITY OF PREVENTING METHOD OF LEAKAGE UTILIZING EMBANKMENT SOIL IN OLD EARTH DAM  [in Japanese]

    FUKUSHIMA Shinji , KITAJIMA Akira , TANI Shigeru , HIROTA Osamu , SUMIKAWA Kaoru

    … This method is the mechanical stabilization by mixing the embankment soil obtained from the existing dam that needs to prevent the leakage and the mud soil in the reservoir. …

    Doboku Gakkai Ronbunshu 2004(771), 249-264, 2004

    J-STAGE 

  • Settlement and flocculation characteristics of incineration residue in sea area landfill site  [in Japanese]

    Koga Daisaburo , Shimaoka Takayuki , Sakita Shogo , Yokoo Takeomi , Kokubo Hiroshi

    … Bottom layer was coarse-grained layer, and upper layer was mud layer. … Furthermore, coefficientof permeability of mud layer was order of 10-6cm/s. … It is possible that mud layer prevented diffusion of the pollution component from coarse-grained layer to the seawater. … This means that by the promotion of flocculation and its active clearing, and thatthe stabilization of a sea area landfill site is promoted. …

    ENVIRONMENTAL ENGINEERING RESEARCH (41), 469-477, 2004

    J-STAGE  Cited by (1)

  • IMPROVEMENT ON IMPERVIOUS PROPERTY OF EMBANKMENT SOIL BY ADDING MUD SOIL IN SMALL OLD EARTH DAM

    Hirota Osamu , Fukusima Shinji , Kitajima Akira , Tani Shigeru , Tagashira Hidekazu

    ため池のような小規模ダムは築造年代が古く老朽化して,漏水や堤体破損等に対する早急な改修を必要とされているものが多い.特に市街化が進んだ地域では適切な遮水用築堤土を近傍から入手しにくくなっており,漏水対策工事の実施が難しくなっている.この状況の解決のためには,既設堤体土に貯水池内に堆積した底泥土を混合した粒度調整土による築堤土の現地調達法が考えられる.ここでは底泥土混合により粒度調整して堤体土の遮水 …

    Proceedings of the Japan National Conference on Geotechnical Engineering JGS38(0), 701-702, 2003

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