Dry Mix Methods for Deep Soil Stabilization

It is a truism that we can no longer freely pick areas with the most suitable ground conditions for building purposes. Soils must often be improved in order to take the loads from buildings, roads and other objects. This volume contains papers covering a range of relevant topics and issues.

Auteur

Hakan Bredenberg, Stabilator AB, Stockholm, Sweden. Goran Hoolm, Swedish Geotechnical Institute, Linkoping, Sweden.Bengt B. Broms, Royal Institute of Technology, Stockholm, Sweden.

Contenu

Preface; Applications of Dry Mix Method for deep soil stabilization; Keynote lecture: Applications of Dry Mix Methods for deep soil stabilization; Dry Mix Methods: A brief overview of international practice; Dry jet mixing method for liquefaction remediation; A new application example of DJM technology in China; Dry mix soil-cement walls: An application for mitigation of earthquake ground deformations in soft or liquefiable soils; Soil stabilization for embedment of Botlek Railway tunnel in the Netherlands; A geotechnical and environmental investigation of a block-stabilised road section; Mass stabilization of peat in road and railway construction; Properties of binders and stabilized soils: Keynote lecture: Properties of binders and stabilized soils; Laboratory-scale dry soil mixing of a sand; Some experience of stabilising Irish organic soils; Peat soil samples stabilised in laboratory - Experiences from manufacturing and testing; Geotechnical characteristics of two Italian peats stabilized with binders; Stabilization of some Swedish organic soils with different types of binder; Development of binders for organic soils; Shear box apparatus for modelling chemical stabilised soil-Introductory tests; Design methods and behaviour of stabilized soils: Keynote lecture: Design of lime, lime/ cement and cement columns; Analysis of the consolidation behavior of cement- and lime/ cement mixed column Foundations; Homogenization method for numerical analysis of improved ground with cement-treated soil columns; Lime-cement stabilization of slopes - Experiences and a design approach; Progressive failure of lime, lime/ cement and cement columns; Combined mass- and column stabilization in Kivikko test embankment- Designing by traditional and FE-methods; Mechanical behaviour and shear resistance of lime/ cement columns; Deep excavations with soil stabilised by lime/ cement columns - A parameter study using; finite element method; Three dimensional consolidation settlement of stabilized soil using lime/ cement columns; Numerical analysis of load distribution between lime/ cement columns and surrounding soil using finite element method; Alternative ways of modelling embankments on deep-stabilised soil; Case records, prediction and performance: Keynote lecture: Prediction and performance - Case records; The performance of stabilized soil columns in two Dutch testsites; Vertical bearing capacity of column type DMM ground with low improvement ratio; Observation of pore pressure and soil movements during lime column installation; Deep stabilization of sandfill in organic subsoil; Hertsby case: A column stabilised and geotextile reinforced road embankment on soft subsoil; Properties of mass- and cell stabilization: Two case studies in Sweden; Large ground deformations during cement lime column installation on road E4 in northern Sweden; Quality control of dry mix methods : Keynote lecture: Quality control for dry mix methods; Development of in-situ control methods for lime/ cement columns; Field methods for quality control at the dry jet mixing method; Column penetration tests and extraction of lime/ cement columns; A new method for laboratory preparation of stabilised clay; Equipment for dry mix methods for deep soil stabilization: Keynote lecture: Equipment for deep soil mixing with the dry jet mix method; Mixing efficiency of dry jet mixing methods applied to peaty soft ground; The mixing process at the dry jet mixing method; EuroSoilStab - Kivikko test embankment- Construction and research; Prestressed lime cement columns.