SMW soil mixing wall KSI series

Overview
KEMSOLID soil‑mixing attachments by KSI, driven by KEMROC, are trench soil‑mixing (TSM) attachments for in‑situ ground improvement. They inject and mix a cementitious binder into the existing soil column to produce continuous, homogeneous soil‑cement structures with controlled depth and reduced material movement and CO₂ emissions.

Key benefits

• Extendable mixing trencher reach up to 12–16 m depending on model
• Mountable on standard excavators and drilling rigs
• Optimized tungsten‑carbide tipped tooling pattern for efficient mixing
• High‑torque drive motors for mixing heavy soils
• Simple, heavy‑duty design with hydraulic chain tensioning
• Low vibration and noise levels for urban or sensitive sites
• No excavation or spoil removal required — binder injected at the lowest point and mixed upward to form a continuous, impermeable profile
• Eco‑efficient execution: potential CO₂ savings (~40%) versus conventional methods
• High daily output potential (>100 linear meters/day in favorable conditions)

How trench soil mixing works
The mixing trencher penetrates to the target depth (models support up to 16 m). Binder is injected at the lowest point while a rotating mixing chain blends it upward into the soil column, producing a consistent, water‑resistant soil‑cement profile without excavation or backfilling.

Main applications

• Foundations and special foundation elements (road, rail, airport bases, reinforcement for heavy structural loads)
• Trench stabilization for utilities and cable installations
• Groundwater sealing, contaminated‑soil barrier walls and landfill containment
• Diaphragm‑wall alternatives, earth retention and support walls in constrained urban environments

Additional features & operational highlights

• Precision mixing depths and accurate injection point ensure full‑depth treatment and homogeneous structure
• Multiple widths and depths available for different soils and project requirements
• Recommended chain speed around 2.0–2.5 m/s for the mixing process
• Designed for consistent binder distribution and reproducible soil‑cement properties

Technical specifications

• Series name: KSI series
• Max. mixing depth: up to 16 m (model‑dependent: KSI 7000 ~7 m; KSI 12000 ~12 m; KSI 16000 up to 16 m)
• Mixing width (typical): KSI 7000: 350–500 mm; KSI 12000: 500–650 mm; KSI 16000: 450–950 mm
• Max. ground compressive strength: 10 MPa
• Max. oil flow: KSI 7000 ~410 l/min; KSI 12000 ~740 l/min; KSI 16000 ~980 l/min
• Recommended oil flow (operational @150 bar): KSI 7000 ~280–350 l/min; KSI 12000 ~490–620 l/min; KSI 16000 ~660–820 l/min
• Max. operating pressure: 400 bar
• Rated power: KSI 7000 ~130 kW; KSI 12000 ~220 kW; KSI 16000 ~300 kW
• Torque (at 380 bar): KSI 7000 ~24,200 Nm; KSI 12000 ~54,400 Nm; KSI 16000 ~72,600 Nm
• Recommended carrier weight: KSI 7000 ~35–55 t; KSI 12000 ~80–120 t; KSI 16000 ~120–200 t
• Recommended chain speed: ~2.0–2.5 m/s
• Standard tooling examples: DT 22/46/38/22 (KSI 7000) and DT 22/90/70/30 (KSI 12000 & 16000)
• Weight per extension / weight at max depth & width: KSI 7000 extension ~400 kg (1 m); weight at max depth ~4,900 kg; KSI 12000 extension ~800 kg (1 m); weight at max depth ~13,500 kg; KSI 16000 extension ~1,900 kg (2 m); weight at max depth ~21,000 kg
• Typical output: >100 linear meters per day (site dependent)