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
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
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
Driven precast piles
Technique
Driven precast piles Driven precast piles are  installed using impact or vibration hammers to a design depth or resistance. Driven precast piles technique image Common uses Can be used for all types…
/expertise/techniques/driven-precast-piles
Minipiles
Technique
Minipiles Minipiles are a deep foundation element constructed using high-strength, small-diameter steel casing and/or threaded bars. Minipiles technique image Common uses Provide structural support…
/expertise/techniques/minipiles
Bored piles
Technique
Bored piles Bored piles are a very effective, state-of-the-art construction element with many applications in foundation and civil engineering. Bored piles drilled shafts technique image Common uses…
/expertise/techniques/bored-piles
Secant pile walls
Technique
Secant pile walls A secant pile wall consists of overlapping (secant) piles to form structural or cutoff walls and achieve the required water tightness. The design can incorporate steel bar or beams…
/expertise/techniques/secant-pile-walls
Vibro concrete columns
Technique
Vibro concrete columns This technique involves construction of concrete columns with a bottom-feed depth vibrator to transfer loads through weak strata to a firm underlying stratum. Vibro concrete…
/expertise/techniques/vibro-concrete-columns
Pali Radice
Technique
Pali Radice Pali Radice (literal translation ‘Root Pile’ from the Italian) is a versatile foundation system using small diameter cast in situ bored piles, developed in Italy in the 1950s. It has been…
/expertise/techniques/pali-radice