Civil Engineering

Colbonddrain

High-quality prefabricated vertical drain (PVD)

    OVERVIEW

    Installed with a purpose-built installation rig mounted on a hydraulic excavator.

    Speedy consolidation of marshy soils

    Speedy consolidation of marshy soils

    A highly effective solution for a major engineering challenge. Can achieve 90% pre-construction consolidation of soils and soft clays in marshland areas within months rather than years, improving safety and drastically reducing cost.

    Functions
    • Vertical drainage.
    • Forms an upward path for excess pore-water to drain off to the surface, resulting in a stable subgrade for construction.
    • Developed in partnership with leading European consultants, laboratories and geosynthetics specialists.
    • Unique combination of patented core structure and nonwoven filter bonded to core increases water flow capacity.
    • Core: hydraulic channel profile ensures laminar flow for optimum performance.
    • Nonwoven filter layers deliver optimum filtration, permeability and strength.
    • Thermal bonding ensures that the filter is kept taut across the flow channels.

    Comprehensive range of applications

    • Use in depths up to 100m.
    • High tensile strength allows use on all installation rig types.
    • Suitable for all soil types.
    Comprehensive range of applications
    EASY TO HANDLE

    EASY TO HANDLE

    • Filter cannot tear or become separated from the core.
    • Roll length of 280m reduces number of connections.
    • Efficient packaging allows high transport loads and reduced storage time on site.
    Applications enabled by this product

    Embankments On Weak Soils And Areas Prone To Subsidence

    Scour & Erosion Protection

    Sediment Control

    Soil Consolidation & Land Reclamation

    Wind Farms

    Technical details
    • Colbonddrain is a prefabricated vertical drain which should be installed with a purpose built installation rig mounted on a hydraulic excavator.
    • If the compressible clay is very deep or contains gravel bands, special techniques such as vibrators and heavy mandrels may be required.
    • Colbonddrain is 10cm wide with a robust polymer core, covered on both sides with a strong and permeable filter fabric.
    • Rolls come in lengths of 280 linear metres.
    • The outer filter fabric of Colbonddrain is bonded to the core structure over its entire surface to form a homogenous geocomposite.

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