Earth retention and shoring
Solution
Earth retention and shoring Earth retention and shoring involves retaining soil subjected to either a natural, unstable slope or a man-made excavation and when required, supporting existing adjacent…
/expertise/solutions/earth-retention-and-shoring
Marine structures
Solution
Marine structures Keller provides design and constructs services for near-shore marine structures. The advanced capabilities of our in house engineering and construction teams ensure we provide cost-…
/expertise/solutions/marine-structures
Wet soil mixing
Technique
Wet soil mixing Wet soil mixing, also known as the deep mixing method, improves the characteristics of weak soils by mechanically mixing them with cementitious binder slurry. Wet soil mixing…
/expertise/techniques/wet-soil-mixing
Compensation/ fracture grouting
Technique
Compensation/ fracture grouting Compensation or fracture grouting is the injection of a cement slurry grout into the soil creating and filling fractures that then lift the overlying soil and…
/expertise/techniques/compensation-fracture-grouting
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Keller at a glance
Resource
Keller at a glance Keller at a glance Image Facts and figures about Keller Group Download
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Driven cast in-situ piles
Technique
Driven cast in-situ piles Driven cast in-situ (DCIS) piles are constructed by driving a closed-ended hollow steel or concrete casing into the ground and then filling it with concrete. Driven cast in-…
/expertise/techniques/driven-cast-in-situ-piles
How we work
Landing page
How we work man in yellow jacket with keller logo on the back Code of conduct Our business code of conduct sets out the principles and standards of behaviour we expect from all our employees. Our…
/how-we-work
Commercial and residential
Market
Commercial and residential Keller provides geotechnical solutions for both existing and planned structures, including office buildings, hotels, distribution centres, residential development,…
/expertise/markets/commercial-and-residential
CFA piles (auger cast)
Technique
CFA piles (auger cast) Continuous flight auger (CFA) piles are a type of bored cast-in-place replacement pile. Piles are drilled and concreted in one continuous operation enabling much faster…
/expertise/techniques/cfa-piles-auger-cast
Permeation grouting
Technique
Permeation grouting Permeation grouting, also known as cement grouting or pressure grouting, fills cracks or voids in soil and rock and permeates coarse, granular soils with flowable particulate…
/expertise/techniques/permeation-grouting
Vibro compaction
Technique
Vibro compaction 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…
/expertise/techniques/vibro-compaction
Vibro stone columns
Technique
Vibro stone columns 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…
/expertise/techniques/vibro-stone-columns
Instrumentation and monitoring
Technique
Instrumentation and monitoring Keller provides systems and services for monitoring the safety and stability of buildings, excavations, bridges, railways, roads, tunnels, dams, embankments and slopes…
/expertise/techniques/instrumentation-and-monitoring
Dry soil mixing
Technique
Dry soil mixing Dry soil mixing is a ground improvement technique that improves soft, high moisture clays, peats, and other weak soils, by mechanically mixing them with dry cementitious binder.  Dry…
/expertise/techniques/dry-soil-mixing
Design and build
Content page
Design and build Keller’s broad product portfolio means our engineers have more options when it comes to an effective and efficient designs for our clients. Following fundamental geotechnical theory…
/expertise/design-and-build
Our history
Content page
Our history Johann Keller 1860 Established by Johann Keller in Renchen, Germany Keller vibro rig form 1930s 1930s Invented the vibro ground improvement method Keller compensation grouting a shaft…
/about-us/our-history
Our work environment
Content page
Our work environment Our people are our most valuable asset. We are committed to creating a work environment and culture that brings out their best and keeps Keller a great place to work. Equal…
/careers/our-work-environment
Rapid impact compaction (RIC)
Technique
Rapid impact compaction (RIC) Rapid impact compaction densifies shallow, granular soils, using a hydraulic hammer, which repeatedly strikes an impact plate on the ground surface.  Rapid impact…
/expertise/techniques/rapid-impact-compaction-ric
Compaction grouting
Technique
Compaction grouting Low mobility (compaction) grouting involves the injection of a low slump, mortar grout to densify loose, granular soils and stabilise subsurface voids or sinkholes. Compaction…
/expertise/techniques/compaction-grouting
Driven precast piles
Technique
Driven precast piles Driven piles are deep foundation elements installed using impact or vibration hammers to a design depth or resistance.  Driven precast piles illustration Common uses Can be used…
/expertise/techniques/driven-precast-piles