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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.
Ductile piles are a deep foundation method using the displacement technique with prefabricated piles made of ductile cast iron available in 118 mm and 170 mm diameters with different wall thickness.
As well as open site works these piles have been used in locations that it has been…
Micropiles, also known as minipiles, are small-diameter drilled piles. Micropiles offer a cost-effective and efficient means to overcome a variety of foundation construction challenges.
Bored piles are high-capacity, cast-in-place elements constructed using a conventional kelly bar and auger system. Whether installed as individual foundation elements, in a pile cap group, or a retaining wall, we are ready to provide you with an optimised bored pile solution.
Bored piles are an effective product with many applications in foundation and civil engineering. Temporary and permanent steel casings are used for a number of engineering reasons.
Secant piled walls are a form of embedded retaining wall and can be designed as cantilevered or propped for greater excavation depths. These techniques form a continuous barrier to reduce flow of soils and water through the wall.
Keller designs and constructs cost-effective build or design-build geotechnical solutions for the industrial and manufacturing sector.
Keller has wide experience of provide the energy sector with cost-effective solutions to ground problems.
Keller can provide solutions for the full range of institutional structures including government and military, education, healthcare, and sports and entertainment.
Increasing land shortage is driving a need to use more brownfield and marginal land often requiring groundwater and soil remediation to reduce contaminants. Keller is the ideal partner for remediation projects, offering the optimal solution to make contaminated land suitable for re-use.
Slope stabilisation is often required to retain soil in a natural, unstable slope or in man-made excavations. Keller draws on its extensive experience with the full range of techniques to provide optimal slope stabilisation solutions for various projects.
