• 제목/요약/키워드: Geotechnical and engineering scopes

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한국건설기술연구원 지반연구실의 어제와 오늘 (Geotechnical Engineering & Tunnelling Research Division in Korea Institute of Construction Technology - Past and Present)

  • 김진만;이주형
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2010년도 추계 학술발표회
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    • pp.233-238
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    • 2010
  • The geotechnical engineering research group in Korea Institute of Construction Technology(KICT), which was first started as a small sub-division of the civil research group in KICT, became an independent research cluster with nearly 90 researchers including 25 doctors(Ph.Ds). Our geotechnical engineering research group has developed to be the best research center related to geotechnical engineering in Korea in terms of number of budget of projects performed annually. As a reaction to the rapid changes of domestic and international issues regarding geotechnical practices, our group established long-term plans which will lead national research projects. For the successful and efficient research and technology development, the group is subdivided by several specialty-divisions. The divisions under the geotechnical engineering research group are tunnels and underground structures, slopes and embankments, geo-environment, foundations, soil reinforcements, and constructions in extremely cold regions. Our research scopes includes planning, site investigation, design, construction, maintenance and management. The geotechnical engineering research group is continuously and successfully examining and analyzing the most recent trends of technology and is predicting and focusing on the researches of newly-developing fields; therefore, the group has been a leading research group in geotechnical engineering nationally.

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Replacing C3S cement with PP fibre and nanobiosilica in stabilisation of organic clays

  • Soheil Ghadr;Arya Assadi-Langroudi;Hadi Bahadori
    • Geomechanics and Engineering
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    • 제33권4호
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    • pp.401-414
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    • 2023
  • Organic clays are ideal habitat for flora and fauna. From a geotechnical perspective, organic clays are soft, weak, variable, heterogeneous and flocculated. Portland cement is a universally common stabiliser. However, some organic acids in soil inhibit full hydration and expose cementation products to rapid dissolution. This paper investigates scopes for use of C3S cement to enable durable cementation. Prospects of using PP fibre alongside with C3S cement, scopes for partial replacement of C3S cement with a plant-based nanosilica and evolution of binders are then investigated. Binding mixtures here mimic the natural functions of rhizoliths, amorphous phases, and calcites. Testing sample population include natural and fibre-reinforced clays, compact mixes of clay - C3S cement, clay - nanobiosilica, and clay, C3S cement and nanobiosilica. Benefits and constraints of C3S cement and fibres for retaining the naturally flocculated structure of organic clays are discussed. Nanobiosilica provides an opportunity to cut the C3S content, and to transition of highly compressive organic clays into an engineered, open-structured medium with >0.5 MPa compressive strength across the strains spanning from peak to 1.5-times peak.