Sökning: "sensitive clays"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden sensitive clays.

  1. 1. On the impact of temperature perturbations on the creep of sensitive clay

    Författare :Yanling Li; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; thermal cycles; sensitive clays; oedometer tests; temperature; natural bonding; apparent preconsolidation pressure; multi-physics modelling; geothermal; static thermal loading;

    Sammanfattning : Temperature affects the soil response, but is not fully understood and quantified and thus often ignored. The temperature fluctuations resulting from energy foundations and construction activities, such as excavations and soil stabilization, however, may lead to changes in the hydromechanical response of the clay. LÄS MER

  3. 2. On modelling of slope stability in sensitive clay

    Författare :Carolina Sellin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; constitutive modelling; mobilisation of shear strength; destructuration; slope stability; anisotropy; sensitive clay; rate dependence;

    Sammanfattning : The stability of natural slopes is a global problem, with the number of landslides and the associated socioeconomic losses increasing, as a result of the global trend of urbanisation, deforestation and changed weather patterns. The available methods for identifying potential failure modes and assessing the stability, however, overly simplify the modelled soil behaviour within a slope, which might lead to unnecessary mitigation measures or non-conservative results. LÄS MER

  4. 3. Multi-scale fabric evolution during hydro-mechanical probing of fine-grained soils

    Författare :Georgios Birmpilis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; X-ray Computed Tomography; clay fabric; geomechanical testing; sensitive clays; X-ray Scattering;

    Sammanfattning : The majority of the studies on sensitive clays so far have focused on the hydro-mechanical response at engineering scale, using concepts from continuum mechanics. The fundamental mechanisms at particle scale, underpinning the emerging response, have so far been studied with post mortem analyses. LÄS MER

  5. 4. Diffusion Controlled Drug Release from Slurry Formed, Porous, Organic and Clay-derived Pellets

    Författare :Erik Jämstorp Berg; Maria Strømme; Håkan Engqvist; Susanne Bredenberg; Pentti Tengvall; Nanoteknologi och funktionella material Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diffusion; Drug delivery; Antithrombotic drugs; Highly potent opioids; Modeling; Clays; Polymers; Pellets; Beads; Materialvetenskap; Materials Science;

    Sammanfattning : Coronary artery disease and chronic pain are serious health issues that cause severe discomfort and suffering in society today. Antithrombotic agents and highly potent analgesics play a critical role in improving the recovery process for patients being treated for these diseases. LÄS MER

  7. 5. Molecular Order and Dynamics in Nanostructured Materials by Solid-State NMR

    Författare :Boris Kharkov; Sergey Dvinskikh; Steven Brown; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mesoporous materials; organic-inorganic nanocomposites; surfactants; liquid crystals; MCM-41; clays; conformational dynamics; solid-state NMR; local field spectroscopy; dipolar coupling; dipolar recoupling; spin decoupling.; Kemi; Chemistry;

    Sammanfattning : Organic-inorganic nanostructured composites are nowadays integrated in the field of material science and technology. They are used as advanced materials directly or as precursors to novel composites with potential applications in optics, mechanics, energy, catalysis and medicine. LÄS MER