Search for dissertations about: "sand column"

Showing result 1 - 5 of 23 swedish dissertations containing the words sand column.

  2. 1. Grouting of Hard Rock with Gelling Liquids, Field and Laboratory Studies of Silica sol

    Author : Johan Funehag; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; aperture; penetration length; gelling liquids; field study; silica sol; colloidal silica; Grouting; propagation; hydraulic test; sand column; rheology; transmissivity;

    Abstract : Recent grouting projects in Sweden have concentrated on the grout itself. The only grout normally used in Sweden is a cement-based one. During the past 10 years, the acceptable flow of water into tunnels has been significantly reduced. The current requirements mean that an average fracture aperture of around 0. READ MORE

  4. 2. Grouting of Fractured Rock with Silica Sol; Grouting design based on penetration length

    Author : Johan Funehag; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grouting; hydraulic test; sand column; propagation; penetration length; pipe flow; aperture; transmissivity; colloidal silica; silica sol; rheology; gelling liquids; field study;

    Abstract : ABSTRACTRecent grouting projects in Sweden have concentrated on the grout itself. The only grout normally used in Sweden is cement-based. During the past 10 years, the acceptable flow of water into tunnels has been reduced significantly. The current requirements mean that an average fracture aperture of around 0. READ MORE

  5. 3. Transport of Radionuclides and Colloid Through Quartz Sand Columns

    Author : Birgit Christiansen-Sätmark; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; transport; radionuclides; Goethite column experiments; sorption; Quartz; colloid;

    Abstract : Studies of the transport of radionuclides in the geosphere are one of the main tasks for performance assessment of a nuclear waste repository. A possible enhanced transport path for the radionuclides is the formation and transport of non-depositing colloids with a high affinity for radionuclides. READ MORE

  6. 4. Off-flavours in drinking water : Analytical procedures and treatment effects in biologically active sand filters

    Author : Bo Lundgren; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : Taste and odour problems in drinking water are primarily caused by naturally produced, volatile, organic compounds. So far, research in this field has focused on a relatively small number of known compounds. READ MORE

  7. 5. Ground Improvement by Dry Deep Mixing Lime-Cement Column Panels as Excavation Support

    Author : Razvan Ignat; Stefan Larsson; Sadek Baker; Sven Liedberg; Masaki Kitazume; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Many urban areas near the coastal regions of Sweden are characterized by post-glacial clay deposits with very low undrained shear strength and high compressibility. Column type ground improvement by the Deep Mixing, DM, method using a binder mixture of lime and cement is commonly used in areas with poor soil conditions due to its cost-effectiveness, predominantly for settlement reduction and to improve the stability of embankments. READ MORE