Wet soil mixing, also known as deep soil mixing, improves the characteristics of weak soils by mechanically mixing them with a cementitious binder slurry.
Mass mixing (MSM) is a specialised technique used to improve soft soils and loose sands, as well as fill materials. The technique is very flexible and can be used over water and on land. The MSM method is predominantly used to control settlement, improve stability of soils and provide temporary…
Soil nailing uses grouted, tension-resisting steel or glass fibre composite elements (nails) to reinforce in situ soils to create a gravity retaining wall for permanent or temporary excavation support.
Compensation or fracture grouting is the injection of a cement slurry grout into the soil creating and filling fractures that can then be potentially used to lift the overlying soil and structures.
Driven steel piles are installed using impact or vibration hammers to a design depth or resistance. Keller installs the complete suite of driven piles from small diameter tube piles to large diameter steel cassions to support your project.
Canopy/umbrella tubes (with diameters of typically 76-168mm but occasionally larger) are a support system used in conventional and mechanical tunnel construction in poor soil conditions.
Continuous flight auger piles (CFA) are cast-in-place piles, using a single continuous hollow stemed auger. Vibration free and low noise, this environmentally friendly piling system is ideally suited to installation in unstable soil conditions and urban environments.
Keller has Australia’…
Permeation grouting, also known as cement grouting or pressure grouting, permeates coarse, granular soils with flowable particulate grouts to create a cemented mass.
Vibro compaction is a ground improvement technique that densifies clean, cohesionless granular soils with a downhole vibrator. It’s a technique first developed by Keller in the 1930s that we’ve used on thousands of projects since.
This technique involves construction of loadbearing columns made from gravel or crushed stones with a vibrator to reinforce all soils in the treatment zone and densify surrounding granular soils. It’s a technique first developed by our company founder, Johann Keller, that we’ve used on thousands…
Dry soil mixing is a ground improvement technique that improves soft, high moisture clays, peats, and other weak cohesive soils, by mechanically mixing them with dry cementitious binder.
Wick drains, also known as Prefabricated Vertical Drains (PVD) are prefabricated geotextile filter-wrapped plastic strips with moulded channels. These act as drainage paths to take pore water out of soft compressible soil so it consolidates faster, often from decades to months.
Rigid inclusions are a ground improvement method using high deformation modulus columns constructed through compressible soils to reduce settlement and increase bearing capacity.
Ground improvement efficiency depends on the stiffness relationship between the soil and the columns. Load…
Dynamic compaction involves the controlled impact of a crane hoisted weight, of between typically 10-30 tonnes, falling in a pre-determined grid pattern to improve loose, granular soils and fills. Dynamic replacement is a variation on dynamic compaction and uses the energy of a falling weight to…
Rapid Impact Compaction densifies shallow, granular soils, using a hydraulic hammer, which repeatedly strikes an impact plate on the ground surface.
Rock grouting is normally done in fissured rock to reduce the flow of water along the joints and discontinuities in the rock.
Low mobility (compaction) grouting involves the injection of a low slump, mortar grout to densify loose, granular soils and stabilise subsurface voids or sinkholes.
Mine or cavity grouting generally uses a low strength cement based grout to fill large natural or man- made voids.
Driven precast piles are deep foundation elements installed using impact or vibration hammers to a design depth or resistance. Keller have developed the design and manufacturing capability over the past 30 years to design piles up to 400mm square and have a fleet of rigs capable of installing…
Franki Piles, also known as enlarged based driven cast in-situ piles, are cast-in-place elements constructed using a drop weight (hammer) and temporary casing. They can provide high capacity piles with relatively shallow installation depths.
