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Excavation support
Solution

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 flexible solutions to solve even highly complex excavation support problems both in a temporary or in a permanent…

/expertise/solutions/excavation-support
Wet soil mixing
Technique

Wet soil mixing, also known as the deep mixing method, improves the characteristics of weak soils by mechanically mixing them with cementitious binder slurry.

/expertise/techniques/wet-soil-mixing
Soil nails
Technique

Soil nailing uses grouted steel nails to reinforce in situ soils and create a gravity retaining wall for permanent or temporary excavation support.

/expertise/techniques/soil-nails
Compensation/fracture grouting
Technique

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 structures.

/expertise/techniques/compensation-fracture-grouting
How we work
Landing page
How we work is just as important as the successes we achieve and everyone at Keller has a responsibility to create a company we can be proud of
/how-we-work
Commercial
Market

Keller UK provides geotechnical solutions for the commercial market sector for both existing and planned structures, including office buildings, hotels, distribution centres, retail, data centres, and other structures.

/expertise/markets/commercial
CFA piles
Technique

Continuous flight auger (CFA) piles are drilled and concreted in one continuous operation enabling much faster installation time than for bored piles. Reinforcement is placed into the wet concrete after casting, enabling the pile to resist the full range of structural loading.

/expertise/techniques/cfa-piles
Permeation grouting
Technique

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 grouts to create a cemented mass.

/expertise/techniques/permeation-grouting
Vibro compaction
Technique

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.

/expertise/techniques/vibro-compaction
Vibro stone columns
Technique

This technique involves the improvement of weak soils by the installation of densely compacted columns made from gravel or similar material with a vibrator. The displacement process reinforces all soils in the treatment zone and densifies surrounding granular soils. It’s a technique first…

/expertise/techniques/vibro-stone-columns
Instrumentation and monitoring
Technique

If a construction project requires structural/ground movement monitoring or the measurement of environmental properties like temperature, noise or vibration, Keller UK's sister company GEO-Instruments can design and install an…

/expertise/techniques/instrumentation-and-monitoring
Dry soil mixing
Technique

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.

/expertise/techniques/dry-soil-mixing
Our history
Content page
/about-us/our-history
Re-levelling structures
Solution

Subsidence, the gradual downward movement of a building or structure, can result in damage to buildings. Keller can apply re-levelling techniques to bring buildings back to their correct levels, strengthen any weak ground under and around the foundations and avoid any recurring settlement.

/expertise/solutions/re-levelling-structures
Employment practices
Content page

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.

/how-we-work/employment-practices
Rigid inclusions
Technique

Rigid inclusions is 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 from…

/expertise/techniques/rigid-inclusions
Mixed modulus columns CMM ®
Technique

Mixed modulus columns, also known as columns with Mixed Moduli, mixed columns or CMM® is a sustainable ground improvement method using high deformation modulus columns constructed through compressible soils to reduce settlement and increase bearing capacity.  CMM® is the combination of a…

/expertise/techniques/mixed-modulus-columns
Dynamic compaction
Technique

Dynamic compaction involves the controlled impact of a crane hoisted weight, of around 10-12 tonnes, falling in a pre-determined grid pattern to improve loose, granular and mixed soils and fills.

/expertise/techniques/dynamic-compaction
Rock/fissure grouting
Technique

Rock grouting is normally done in fissured rock to reduce the flow of water along the joints and discontinuities in the rock.

/expertise/techniques/rock-fissure-grouting
Compaction grouting
Technique

Compaction grouting involves the injection of a low slump, mortar grout to densify loose, granular soils and stabilise subsurface voids or sinkholes.

/expertise/techniques/compaction-grouting
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