15 Linear Meters of Solid Sealing per Hour in Sand: How Kemsolid KSI7000_5 Built Watertight Cells for a New Train Maintenance Centre in France.
Job Site Report
Advanced Soil Stabilization for waterlight cells for a new train maintenance with Kemsolid KSI7000_5 in Marcheprime, France.
Fast Ground Sealing for a Critical Rail Infrastructure Project
On infrastructure projects where groundwater control and soil stability are critical, choosing the right ground engineering technology can determine whether a project progresses efficiently or faces costly delays. This was the case in Marcheprime, France, where KELLER required a reliable sealing solution for the construction of a new train maintenance centre. To meet the challenge, KELLER project team selected the Kemsolid KSI7000_5 mounted on a LIEBHERR R938 excavator, delivering fast and controlled in-situ soil treatment over a four-week programme.
The KRD MIX soil mixing attachment, mounted on a powerful Doosan DX 400 excavator, delivered consistent performance across varying site conditions. Designed for deep and precise soil mixing, Kemsolid KRD MIX achieved an impressive mixing depth of 4 meters and producing high average rates.
Why Watertight Cells Were Essential in Medium Sand Conditions
The objective of the project was the creation of watertight cells for soil stabilisation in medium-density sand conditions. These sealed cells were essential to provide groundwater control, improve ground conditions, and create a secure platform for future development. In many projects, contractors may consider alternatives such as sheet piling, slurry wall systems, diaphragm wall construction, secant pile wall, soldier pile wall, contiguous pile wall, or temporary shoring. However, for this application, the Kemsolid solution offered an efficient method for producing a continuous soil cement cutoff wall directly in the ground.
High Productivity with KSI7000_5: 15 Linear Meters per Hour
Using the KSI7000_5 trench soil mixing system, KELLER achieved a mixing depth of 3 to 5 meters with a 400 mm wall width and production rates of approximately 15 linear meters per hour. This level of productivity is highly valuable on time-sensitive civil projects where schedule certainty matters. Installed on a 38-ton excavator with 220 kW engine power, double pump hydraulics, 300 l/min oil flow, and 380 bar pressure, Kemsolid KSI (Trench-Soil-Mixing) TSM technology provided the power and consistency required for continuous soil mixing.
Soil Cement Cutoff Walls as a Smart Alternative to Traditional Methods
The Kemsolid technology works by blending in-situ soil with binder to create a homogeneous soil cement barrier. This makes it ideal for cutoff wall construction, groundwater cutoff, contamination barrier systems, levee construction, dam sealing, dam rehabilitation, excavation shoring, excavation support, and foundation shoring. Compared with importing materials or installing more complex retaining systems, trench soil mixing can reduce logistics, simplify execution, and improve sustainability.
Proven Value for Contractors: Faster Delivery, Lower Risk, Stronger Foundations
For contractors and ground improvement specialists, this project in France demonstrates how Kemsolid delivers practical value: fast installation, reliable watertight performance, and efficient use of existing excavator fleets. Whether the need is a retaining wall construction, deep soil mixing, slurry trench alternative, or permanent sealing system, Kemsolid continues to prove that smart geotechnical technology can lower risk and accelerate progress.
More control. Better sealing. Stronger foundations. That is the Kemsolid advantage.
Discover the KSI Difference!
Ready to elevate your next project? Contact Kemsolid today to learn how the KSI range can help you build on solid foundations.