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 Polska offers flexible solutions to solve even highly complex excavation support problems both in a temporary or in a…
Keller Polska 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.
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.
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.
Driven cast in-situ (DCIS) piles are constructed by driving a closed-ended hollow steel or concrete casing into the ground and then filling it with concrete.
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…
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 Polska’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 Polska 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.
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 fills.
Rapid impact compaction densifies shallow, granular soils, using a hydraulic hammer, which repeatedly strikes an impact plate on the ground surface.
