Pre-study: Ground improvement for marginally stable slopes: Naturfareprosjektet: Delprosjekt 6. Kvikkleire
Abstract
The report aims to give a critical review on various ground improvement methods that
involve in-situ mixing and/or injection of stabilising agents in the form of powder or
slurry into soft clays.
The project was initiated by Statens vegvesen, given the problems in Norway associated with
slopes of marginal stability.
The report will focus on installation methods that are applicable for ground improvement in
soft sensitive clays, with the aim of identifying installation methods that minimise pore
pressure built-up during installation as well as deformations.
The methods considered include both dry and wet deep soil mixing and various other
potential methods, including electro-osmotic injection of stabilising agents into the soft soil.
Additionally, an evaluation of the achieved effect on strength parameters resulting from the
use of wet slurry versus dry mixing is conducted.
Description
Naturfareprosjektet (NIFS)