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Development of cement improvement method for high organic soils based on perfomance verification

Research Project

Project/Area Number 15K14823
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Rural environmental engineering/Planning
Research InstitutionKochi University

Principal Investigator

SATO SHUSHI  高知大学, 教育研究部自然科学系農学部門, 准教授 (90403873)

Co-Investigator(Kenkyū-buntansha) 手林 慎一  高知大学, 教育研究部自然科学系農学部門, 准教授 (70325405)
Research Collaborator KAWASAKI Junpu  
OKAMOTO Michitaka  
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsセメント改良 / 高有機質土壌 / 泥炭 / 力学的特性 / 耐久性能 / 性能照査型設計
Outline of Final Research Achievements

When improve the high organic soils such as peat with cement, sometimes prescribed amount of cement can’t work well sometimes. In this research, we focused to this phenomenon and try to elucidate the cause as well as to suggest the effective countermeasure method. As a result from experiments, there are at least two hardening inhibiting matters in peat, and these matters, and their polarity were comparatively low. From the result of activity limit test, more than 10 times mass of cement amount against peat amount is necessary to get prescribed strength of improved soil. It is effective to inject chemical matters which can collapse the chemical structure of these matters in advance to extract and analyze these inhibiting matters in peat in order to achieve cement improve against high organic soil considering the “performance verification” model.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (5 results)

All 2016 2015

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (4 results)

  • [Journal Article] 泥炭由来の化学成分がセメントの強度発現特性に及ぼす影響に関する基礎的研究2016

    • Author(s)
      川﨑順風,手林慎一,岡本道孝,佐藤周之
    • Journal Title

      コンクリート工学年次論文集

      Volume: 38(1) Pages: 33-38

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 泥炭由来の液-液分配法による化学物質がセメントの強度発現に及ぼす影響2016

    • Author(s)
      川﨑順風,手林慎一,岡本道孝,佐藤周之
    • Organizer
      平成28年度農業農村工学会大会講演会
    • Place of Presentation
      宮城県仙台市
    • Year and Date
      2016-08-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 泥炭のセメント改良において強度発現を阻害する化学物質に関する研究と今後の展開2016

    • Author(s)
      川﨑順風,手林慎一,岡本道孝,佐藤周之
    • Organizer
      第71回農業農村工学会中国四国支部講演会
    • Place of Presentation
      愛媛県松山市
    • Related Report
      2016 Research-status Report
  • [Presentation] 泥炭のセメント改良において強度発現を阻害する脂溶性有機化合物の活性限界の推定2015

    • Author(s)
      川﨑順風,長谷川雄基,手林慎一,佐藤周之,岡本道孝
    • Organizer
      第70回農業農村工学会中国四国支部講演会
    • Place of Presentation
      広島県広島市
    • Year and Date
      2015-10-07
    • Related Report
      2015 Research-status Report
  • [Presentation] 泥炭およびロームの化学成分がセメント硬化体の強度発現特性に及ぼす影響2015

    • Author(s)
      川﨑順風,手林慎一,長谷川雄基,佐藤周之
    • Organizer
      平成27年度農業農村工学会大会講演会
    • Place of Presentation
      岡山県岡山市
    • Year and Date
      2015-09-01
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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