Slurry walls are constructed using a cement-bentonite slurry to produce a below ground low permeability barrier.
Sheet piling retains soil, using steel sheets with interlocking edges and is applied using both vibratory and vibration-free installation rigs.
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…
Keller 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 restoration of existing structures. We also have solutions for tidal barriers and coastal protection schemes.…
Wet soil mixing, also known as the deep mixing method, improves the characteristics of weak soils by mechanically mixing them with cementitious binder slurry.
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 binder.
Soil nailing uses grouted, tension-resisting steel elements (nails) to reinforce in situ soils and creating a gravity retaining wall for permanent or temporary excavation support.
When wet soils swell and can’t expand downwards or sideways, the soil rises up and exposes the upper surface, effectively the opposite of subsidence. While displacement may be relatively small, ground heave can still lead to serious structural damage. Keller can provide the best solution to…
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.
The micropile slide stabilisation system (MS³) consists of an array of micropiles, working both in tension and compression, that connect as a system using a structurally reinforced grade beam to stop slide movements.
Keller provides geotechnical solutions for the commerical market sector for both existing and planned structures, including office buildings, hotels, distribution centres, retail, data centres, and other structures.
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 installation time than for other piles of this type. Reinforcement is placed into the wet concrete after casting, enabling the…
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.
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.
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 granular soils. It’s a technique first developed by our company founder, Johann Keller, that we’ve used on thousands…
Keller’s broad product portfolio means our engineers have more options when it comes to an effective and efficient designs for our clients.
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.
Wick drains, also known as Prefabricated Vertical Drains (PVD) are prefabricated geotextile filter-wrapped plastic strips with molded channels. These act as drainage paths to take pore water out of soft compressible soil so it consolidates faster, often from decades to months.