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…
/expertise/solutions/excavation-support
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
Soil nails
Technique
Soil nails Soil nailing uses grouted steel nails to reinforce in situ soils and create a gravity retaining wall for permanent or temporary excavation support. Soil nails technique image Common uses…
/expertise/techniques/soil-nails
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
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
Market
Commercial Keller UK provides geotechnical solutions for the commercial market sector for both existing and planned structures, including office buildings, hotels, distribution centres, retail, data…
/expertise/markets/commercial
CFA piles
Technique
CFA piles 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…
/expertise/techniques/cfa-piles
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 the improvement of weak soils by the installation of densely compacted columns made from gravel or similar material with a vibrator. The displacement…
/expertise/techniques/vibro-stone-columns
Instrumentation and monitoring
Technique
Instrumentation and monitoring If a construction project requires structural/ground movement monitoring or the measurement of environmental properties like temperature, noise or vibration, Keller UK…
/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
Our history
Content page
Our history Johann Keller 1860 Johann Keller established 1930s Keller invented vibro ground improvement method 1960s GKN moved into UK piling & ground improvement market with the acquisition of…
/about-us/our-history
Re-levelling structures
Solution
Re-levelling structures 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…
/expertise/solutions/re-levelling-structures
Employment practices
Content page
Employment practices 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…
/how-we-work/employment-practices
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.…
/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 sustainable ground improvement method using high deformation modulus columns…
/expertise/techniques/mixed-modulus-columns
Dynamic compaction
Technique
Dynamic compaction 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…
/expertise/techniques/dynamic-compaction
Rock/fissure grouting
Technique
Rock/fissure grouting Rock grouting is normally done in fissured rock to reduce the flow of water along the joints and discontinuities in the rock. Rock/fissure grouting technique image Common uses…
/expertise/techniques/rock-fissure-grouting
Compaction grouting
Technique
Compaction grouting Compaction grouting involves the injection of a low slump, mortar grout to densify loose, granular soils and stabilise subsurface voids or sinkholes. Compaction grouting technique…
/expertise/techniques/compaction-grouting