Discover how Deep Cement Mixing (DCM) technology is transforming coastal development
| DCM at a Glance
What is DCM?
Deep Cement Mixing (DCM) is a technique that strengthens soft seabed by injecting and mixing cement-based slurry directly into the ground — forming stable columns below the surface.
Why It Matters?
DCM enables safe, large-scale marine reclamation without dredging or heavy excavation — making it faster, cleaner, and more sustainable.
Where It’s Used?
Ideal for infrastructure like ports, airports, and coastal developments — especially where seabed conditions are weak or soft.
| How DCM Works
Precision Beneath the Surface
Targeted Injection
High-performance cement slurry is precisely injected deep into soft seabed zones using automated nozzles.
Deep In-Situ Mixing
Advanced rotating tools blend soil and binder beneath the water, forming a controlled, stable structure — without excavation.
Solid Column Formation
In minutes, the ground transforms into a grid of reinforced columns — ready to support heavy marine infrastructure.
Inside the
DCM Process
| How Deep Cement Mixing Works Beneath the Surface:
Step-by-step illustration of how DCM strengthens soft marine soil
using in-situ slurry injection and auger mixing.
Deep Cement Mixing (DCM) strengthens seabeds by injecting cement slurry deep underground and mixing it with the native soft soil to form rigid, load-bearing columns. This diagram illustrates each stage of the process — from centering and augering, to injection and solidification. The result: stable ground with minimal environmental impact.
Installation Configurations
| Deep Cement Mixing (DCM)
Different project conditions require different column arrangements. At KMC, we tailor the DCM installation method based on soil conditions, load requirements, and project scale.
Single Column
Best for: Localized ground improvement
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Used for spot reinforcement in weak or unstable soil zones
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Ideal for supporting isolated loads (foundations, columns, small structures)
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Cost-effective for targeted stabilization
Wall Type
Best for: Retention & lateral support
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Columns installed in a continuous linear pattern
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Commonly used for:
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Slope stabilization
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Quay walls
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Excavation support
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Provides improved shear strength and prevents soil movement
Block Type
Best for: Heavy load-bearing structures
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Dense grouping of columns forming a solid mass
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Suitable for:
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Ports and terminals
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Industrial plants
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Large infrastructure foundations
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Ensures high bearing capacity and settlement control
Grid Type
Best for: Large-area stabilization
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Columns installed in a network/grid pattern
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Used across wide project areas with soft soil conditions
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Balances performance and cost efficiency
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Common in:
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Land reclamation
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Airport runways
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Highways
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DCM in Action:
Proven Performance Across Marine Projects
Hong Kong International Airport (HKIA)
HONG KONG
To support the 650-hectare reclamation for a three runway at Hong Kong International Airport, Deep Cement Mixing (DCM) was deployed to stabilize soft marine clay seabed — offering a non-intrusive, high-precision ground improvement solution.
KMC Founder Mr. Chul Keun Kim led DCM operations as Project Controller from 2016–2019, overseeing:
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926,000 m³ of DCM successfully treated
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Zero safety incidents; full compliance
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One of Asia’s largest marine DCM projects
Project Scope:
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Location: North of Chek Lap Kok
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Method: Marine DCM Barges
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Stakeholders: Airport Authority HK, Penta-Ocean, others
(2016-2017)
Marine ground improvement begins using barge-mounted DCM rigs
under Contract 3201.
(2020 – At Present)
Infrastructure Foundations in Development
Official Footage:
Hong Kong International Airport Expansion
Watch how advanced marine Deep Cement Mixing (DCM) technology powers one of the world’s largest land reclamation projects, enabling sustainable and stable marine infrastructure.
Disclaimer: “This video is property of the Hong Kong Airport Authority and is shared here for informational purposes only. All rights belong to their respective owners.”
Frequently Asked Questions
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