Cutter soil mixing

Cutter soil mixing (CSM)

Cutter soil mixing (CSM)

The production of soil mixing elements through insertion of a rotating cutting head.

For cutter soil mixing rotating drums break up the soil structure. Simultaneously a self-hardening binding agent suspension is added. The binding agents used are mainly cement types or mixtures of cement and bentonite. These are mixed with water to form a suspension. The drums of the mixing tool rotate around the horizontal axis so producing soil mixing elements with a rectangular cross-section.

Examples for cutter soil mixing

  • The mixing equipment for cutter soil mixing consists of a rectangular Kelly bar and the cutting head.

    LRB 255 with cutter soil mixing equipment

    The mixing equipment for cutter soil mixing consists of a rectangular Kelly bar and the cutting head.

  • The hydraulically driven drums which are fitted with cutting teeth loosen and mix the soil.

    Cutting head with four cutting wheels

    The hydraulically driven drums which are fitted with cutting teeth loosen and mix the soil.

  • Counter-rotating drums provide uniform mixing and a homogeneous mixing result.

    Mixing the soil

    Counter-rotating drums provide uniform mixing and a homogeneous mixing result.

  • As the cutting head penetrates the ground a binding agent suspension is introduced through an injection pipe and mixed with the soil.

    Inserting the cutting head

    As the cutting head penetrates the ground a binding agent suspension is introduced through an injection pipe and mixed with the soil.

  • During extraction the binding agent is further added in doses. Thereby the soil mortar is mixed rotationally a second time.

    Extracting the cutting head

    During extraction the binding agent is further added in doses. Thereby the soil mortar is mixed rotationally a second time.

  • If required, the freshly produced soil mixing panels can be fitted with reinforcement structures.

    Insertion of a reinforcement

    If required, the freshly produced soil mixing panels can be fitted with reinforcement structures.

Video cutter soil mixing

The production of soil mixing elements through insertion of a rotating cutting head.

The video shows an LRB 255 piling and drilling rig applied for cutter soil mixing. Play video

The production of soil mixing elements through insertion of a rotating cutting head.

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