Excavation support
Solution
Excavation support During construction it is often necessary to form a stable excavation and to ensure that any associated movement will not damage neighbouring structures or utilities. Keller offers…
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Marine structures
Solution
Marine structures [Company] offers a full range of services for the marine construction market. This includes the design and construction of new ports, jetties and quays as well as the extension and…
/en/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. Keller rig performing…
/en/expertise/techniques/wet-soil-mixing
Mass mixing
Technique
Mass mixing Mass Soil Mixing (MSM), or mass stabilisation, is a ground improvement technique that improves soft or loose soils, by mechanically mixing them with either wet grout or dry cementitious…
/en/expertise/techniques/mass-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…
/en/expertise/techniques/compensation-fracture-grouting
Download
Keller at a glance
Resource
Keller at a glance Keller at a glance infossheet Infosheet Facts and figures about Keller Group Download
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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…
/en/how-we-work
Commercial
Market
Commercial Keller provides geotechnical solutions for the commerical market sector for both existing and planned structures, including office buildings, hotels, distribution centres, retail, data…
/en/expertise/markets/commercial
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…
/en/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…
/en/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…
/en/expertise/techniques/vibro-compaction
Vibro stone columns / Vibro replacement
Technique
Vibro stone columns / Vibro replacement 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…
/en/expertise/techniques/vibro-stone-columns-vibro-replacement
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…
/en/expertise/techniques/instrumentation-and-monitoring
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…
/en/careers/our-work-environment
Wick / PVDs / band drains
Technique
Wick / PVDs / band drains Wick drains, also known as Prefabricated Vertical Drains (PVD) are prefabricated geotextile filter-wrapped plastic strips with molded channels. These act as drainage paths…
/en/expertise/techniques/wick-pvds-band-drains
Rigid inclusions
Technique
Rigid inclusions Rigid inclusions is a ground improvement method using high deformation modulus columns constructed through compressible soils to reduce settlement and increase bearing capacity.…
/en/expertise/techniques/rigid-inclusions
Mixed modulus columns CMM ®
Technique
Mixed modulus columns CMM ® Mixed modulus columns, also known as columns with Mixed Moduli, mixed columns or CMM® is a ground improvement method using high deformation modulus columns constructed…
/en/expertise/techniques/mixed-modulus-columns
Dynamic compaction
Technique
Dynamic compaction Dynamic compaction involves the controlled impact of a crane hoisted weight, of around 10-30 tonnes, falling in a pre-determined grid pattern to improve loose, granular soils and…
/en/expertise/techniques/dynamic-compaction
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. Keller rig…
/en/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. Keller rig…
/en/expertise/techniques/compaction-grouting