Browsing NTNU Open by Author "Helle, Tonje Eide"
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A geochemical, mineralogical and geotechnical characterization of the low plastic, highly sensitive glaciomarine clay at Dragvoll, Norway
Helle, Tonje Eide; Aagaard, Per; Nordal, Steinar; Long, Michael; Bazin, Sara (Journal article; Peer reviewed, 2019)The sediments at the NTNU research site Dragvoll, Trondheim, Norway accumulated in seawater close to the glacier front during the Pleistocene-Holocene transition. A comprehensive site investigation and laboratory test ... -
Effectiveness of resistivity cone penetration tests in salt-treated highly sensitive clay
Helle, Tonje Eide; Long, Michael; Nordal, Steinar; Aagaard, Per (Journal article, 2017)Salt wells filled with potassium chloride may be used as landslide mitigation in highly sensitive quick clays, as the changed pore-water composition permanently improves the remoulded shear strength. To verify improvements, ... -
Improving the post-failure properties in quick clays by treatment with potassium chloride
Helle, Tonje Eide; Aagaard, Per; Nordal, Steinar (Chapter, 2017)Installation of salt wells filled with potassium chloride may be used as a ground improvement method in quick-clay hazard areas. The migration of potassium chloride is self-driven by molecular diffusion. The effectiveness ... -
In Situ Improvement of Highly Sensitive Clays by Potassium Chloride Migration
Helle, Tonje Eide; Aagaard, Per; Nordal, Steinar (Journal article; Peer reviewed, 2017)Highly sensitive, low-saline clays, termed quick clays, represent a risk for large landslides. An in situ experiment was conducted in which salt wells filled with potassium chloride were installed to study how salt wells ... -
Laboratoriestudie av saltdiffusjon i kvikkleire
Gjengedal, Ingelin (Master thesis, 2012)Denne masteroppgaven er en laboratoriestudie på hvordan tilsetning av salt vil påvirke geotekniske og geokjemiske egenskaper i norske marine leirer (kvikkleirer) fra forskjellige steder. Endringen i leirenes oppførsel vil ... -
Laboratory investigation on salt migration and its effect on the geotechnical strength parameters in quick clay mini-block samples from Dragvoll
Bryntesen, Rikke Nornes (Master thesis, 2014)Investigations of the effect of salt diffusion as ground improvement of quick clay is importantto provide a clear understanding of the method, to be able validate the potential of commercialuse. Previous extensive ... -
Quick-clay landslide mitigation using potassium chloride
Helle, Tonje Eide (Doctoral theses at NTNU;2017:234, Doctoral thesis, 2017)Highly sensitive postglacial marine clays, termed quick clays, represent a risk for large retrogressive or progressive landslides such as the well-documented Rissa quick-clay landslide in 1978. Landslide susceptibility ...