WANG, Hailong

写真a

Affiliation

Faculty of Science and Engineering, Global Center for Science and Engineering

Job title

Associate Professor(without tenure)

Mail Address

E-mail address

Homepage URL

http://www.f.waseda.jp/hkomine/index.html

Research Institute 【 display / non-display

  • 2020
    -
    2022

    理工学術院総合研究所   兼任研究員

Education 【 display / non-display

  • 2011.10
    -
    2014.09

    The university of Tokyo   graduate school   Department of Civil engineering  

  • 2007.09
    -
    2010.07

    Southwest Jiaotong University   graduate school   Department of Road and Railway Engineering  

  • 2003.09
    -
    2007.07

    Shandong Jiaotong University   Department of Civil engineering  

Degree 【 display / non-display

  • 2014.06   The University of Tokyo   Ph.D

Research Experience 【 display / non-display

  • 2018.04
    -
    2020.03

    Waseda University   Research Institute for Science and Engineering   Assistant Professor

  • 2015.04
    -
    2018.03

    OYO Corporation   Tokyo Regional Office

  • 2014.10
    -
    2015.03

    The University of Tokyo   Institute of Industrial Science   Project Researcher

Professional Memberships 【 display / non-display

  • 2020.02
    -
    Now

    Japan Society of Civil Engineering

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    THE JAPANESE GEOTECHNICAL SOCIETY

 

Research Areas 【 display / non-display

  • Environmental materials and recycle technology   CO2固定鉱物の有効利用

  • Geotechnical engineering   properties of compacted bentonite as buffer material in geological disposal

Research Interests 【 display / non-display

  • CO2固定鉱物

  • iron ore fines

  • swelling property

  • laboratory test

  • buffer material

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Papers 【 display / non-display

  • A swelling pressure cell for X-ray diffraction test

    Hailong Wang, Hideo Komine, Takahiro Gotoh

    Géotechnique     1 - 12  2021.03  [Refereed]

    Authorship:Lead author, Corresponding author

    DOI

  • Development of a Multifunctional Triaxial System for Unsaturated Soils: Addition of Permeameter Function

    Hailong Wang, Jaylord U. Tan Tian, Junichi Koseki, Takeshi Sato

    Geotechnical Testing Journal   44 ( 2 ) 422 - 439  2021.03  [Refereed]

    Authorship:Lead author, Corresponding author

    DOI

  • Water retention characteristics of iron ore fines

    Hailong Wang, Junichi Koseki, Tomoyoshi Nishimura

    Canadian Geotechnical Journal   57 ( 9 ) 1427 - 1437  2020.09  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Evaluations of water retention characteristics of typical iron ore fines (IOF) were presented, which was part of experimental works for the estimation of liquefaction potential of IOF heaps. The water retention tests were conducted in a suction range from 0.1 to 106 kPa on two IOFs and two artificial soils with various testing techniques. It is observed that water retention characteristic curves of one IOF (IOF-B) converge in terms of the relationship between suction (S) and water content (w) regardless densities of specimens when S exceeds a threshold value (Sth). Based on this finding, water retention characteristics are divided into density and materials affected zones. It is also found that IOFs generally have higher water retention ability than the two artificial soils, from which discussion is made on the effect of specific surface area and mineralogy on water retention characteristics of IOF. Finally, water retention characteristics are linked to compaction curves, from which, with the consideration that degree of saturation at peaks of compaction curves is relatively constant, a safety margin of a recently proposed regulation for maritime transportation of IOF is discussed.

    DOI

  • Hydration and dehydration of water of bentonite: a solid-state 1H magic-angle spinning NMR study

    Hailong Wang, Toshimichi Shibue, Hideo Komine

    Chemical Physics   536  2020.08  [Refereed]

    Authorship:Lead author

  • Movement of water in compacted bentonite and its relation with swelling pressure

    Hailong Wang, Takumi Shirakawabe, Hideo Komine, Daichi Ito, Takahiro Gotoh, Yuta Ichikawa, Qiao Chen

    Canadian Geotechnical Journal   57 ( 6 ) 921 - 932  2020.06  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    A testing procedure was proposed to study water movement in compacted bentonite and the development of swelling pressure (ps) when compacted bentonite specimens were wetted. In this procedure, a multi-ring mold was introduced for ps measurements, after which the specimen was sliced for X-ray diffraction to find movement of water in the interlayer space of montmorillonite. Results revealed a relation between four phases of ps development and evolution of four states of interlayer water molecule arrangement of montmorillonite (L): when ps reached its first peak in phase I, L moved from 1 row water arrangement (1w) to at least 2w; when ps decreased and re-increased in phases II or III, L moved from 2w to at least 3w; and when ps reached a steady state in phase IV, L = 3w. The w distribution in the compacted bentonite was also measured as water absorption time increased. Based on those results, the global water movement was estimated in terms of diffusivity (D) following a method employing Boltzmann transform. Results of comparisons implied that D calculated using this method matched experimental data well and the method was rather easily handled.

    DOI

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Misc 【 display / non-display

  • ”Apparatus design drawing” swelling pressure cell apparatus

    Hailong Wang

       2021.09

    Authorship:Lead author, Last author, Corresponding author

  • ”Apparatus design drawing” X-ray swelling pressure cell

    Hailong Wang

       2021.09

    Authorship:Lead author, Last author, Corresponding author

Awards 【 display / non-display

  • Best presentation Award at 53th JGS Annual Conference

    2018.09   The Japanese Geotechnical Society   A Conceptual Model between Water Ratio in Volume and Suction of Unsaturated Materials

    Winner: Hailong Wang

  • Best presentation Award at 50th JGS Annual Conference

    2015.10   The Japanese Geotechnical Society   A new index to evaluate liquefaction resistance of partially saturated sandy soils

    Winner: Hailong Wang

Specific Research 【 display / non-display

  • 締固めたベントナイトの吸水に伴う水分拡散・圧密・保水挙動のメカニズム究明

    2020  

     View Summary

    本研究は,高レベル放射性廃棄物の地層処分における緩衝材設計の合理化や安全性評価の高度化に資する締固めた不飽和ベントナイトの吸水膨潤プロセスに伴う現象の相互作用を解明することを目的とする.このプロセスで発生する水分の拡散,モンモリロナイトの膨潤,および土粒子骨格の圧密現象と,各現象の相互関係を系統的な室内実験により明らかにする.本年度の研究では,ベントナイトの膨潤圧メカニズムを着目し,膨潤圧に及ぼす供試体のサイズ,初期含水比の影響を実験的に検討した.応募者が開発した新たな実験装置により,短期間に多数のデータを取得することができ,これらの影響を明らかになっている.研究成果は,地盤工学分野において最も影響力の高い学術誌“Geotechque”に採用されていた.

  • 沿岸部における高レベル放射性廃棄物の地層処分に資する緩衝材の水分拡散に関する研究

    2020  

     View Summary

    高レベル放射性廃棄物(HLW)の地層処分技術開発において,国は,廃棄物の沿岸部処分システム高度化開発が求められている.沿岸部処分の地下水は,海水環境であり,これまでに多く研究された淡水環境と異なり,地下水の浸入により緩衝材が不飽和状態から飽和状態へ遷移する再冠水段階において,緊急性の高い検討項目となる.本研究では,核燃料サイクル機構の検討結果を踏まえて,高レベル放射性廃棄物地層処分における緩衝材の候補材料とされるベントナイト(クニゲルV1,クニミネ工業)を用いて,締固めた供試体に,沿岸部処分の地下水環境を模擬した塩素酸ナトリウムを使用し,ベントナイト系緩衝材の膨潤特性を示す膨潤圧および水分移動特性を示す水分拡散係数を検討した.研究結果に基づき地下水質が緩衝材の膨潤特性および水分移動特性に及ぼす影響を確認した.

 

Syllabus 【 display / non-display

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Teaching Experience 【 display / non-display

  • Surveying practice

    Waseda University  

    2020.04
    -
    Now
     

  • Introduction to Civil and Environmental Engineering

    Waseda University  

    2018.10
    -
    Now
     

  • Laboratory on Soil Mechanics

    Waseda University  

    2018.10
    -
    Now
     

  • SHIP Research Planning and Skill B

    Waseda University  

    2018.10
    -
    Now
     

  • Science and Engineering Laboratory

    Waseda University  

    2018.10
    -
    Now
     

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Committee Memberships 【 display / non-display

  • 2021.03
    -
    Now

    Japanese Geotechnical Society  災害調査データ委員会

  • 2020.06
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    Now

    Soils and Foundations - Editorial Board  Editorial Board

  • 2017.06
    -
    2020.06

    地盤工学会  地盤調査規格・基準委員会 WG2ボーリング・サンプリング