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Compressibility of Compacted Weathered Basalt Soil

Research Project

Project/Area Number 08660299
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

TAKAYAMA Masateru  Kyushu University, Faculty of Agriculture, Professor, 農学部, 教授 (60038312)

Co-Investigator(Kenkyū-buntansha) OKABE Tamenobu  Kyushu University, Faculty of Agriculture, Research Assistant, 農学部, 教務員 (60091378)
HIYAMA Hiroki  Kyushu University, Faculty of Agriculture, Assistant Professor, 農学部, 助手 (10208788)
OTSUBO Masami  Kyushu University, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (80112316)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1997: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1996: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsWeathered Basalt Soil / Compacted Soil / Compressibility / Collapse / Strength
Research Abstract

Onjaku Soil, the weathering product of basalt, is distributed in Uwaba area, north eastern part of Saga Prefecture. Onjaku soil which consist mainly of halloysite and chlorite as clay mineral is classified as clay soil according to Japanese Standard Soil Classification. The general features of this soil are great specific gravity of soil particles, high water content for small clay fraction percentage, and small dried density of around lg/cm^3.
The present paper investigates the compressibility of compacted Onjaku soil. and its settlement behavior due to water immersion. The characteristics of soil compressibility, due to water immersion, changed for soil samples compacted below optimum water content, and expansion or settlement occurred, while the soil compressibilty remained unchanged and no settlement occurred for soil samples compacted above optimum water content, with saturation degree greater than around 85%.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 高山 昌照: "締固めおんじゃく(玄武岩風化土)の圧縮性" 農業土木学会論文集. 190. 121-128 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takayama、Masateru: "Compressibility of Compacted Weathered Basalt Soil" Trans.of JSIDRE. No.190. 121-128 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 高山昌照: "締固めおんじゃく(玄武岩風化土)の圧縮性" 農業土木学会論文集. 190. 121-128 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 高山 昌照: "締固めおんじゃく(玄武岩風化土)の水浸による圧縮性・強度の変化" 平成8年度農業土木学会大会講演会講演要旨集. 660-661 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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