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Diaphragm Wall is generally reinforced concrete wall constructed in the ground using Under slurry technique which was developed in Europe.
The technique involves excavating a narrow trench that is kept full of an engineered fluid of slurry.
Walls of thickness between 300 and 1200 mm can be formed in this way up to a depths of 45 meters.
Diaphragm wall Application
Commonly used in congested areas.
Can be Installed in close proximity to existing structure.
Practically suited for deep basements.
Used in conjunction with “Top Down” construction technique.
Positive facades of Diaphragm Wall
Can be Installed to considerable depth.
Formation of walls with substantial thickness.
Flexible system in plan layout.
Easily incorporated into Permanent works.
Designable to carry vertical loads.
Construction time of Basement can be lowered considerably.
Economic and Positive solution for large deep basement in saturated and unstable soil profiles.
Can be used for seepage control in Dams.
Noise levels limited to engine noise only.
No vibration during installation.
Construction Sequence of Diaphragm wall
Fixing of Alignment
Stage-2: Guide wall Construction
Stage-4: Trench Cleaning
Stage-5: Stop ends fixing
Stage-6: Reinforcement Cage lowering
Stage-7: Placing of Concrete
Stage-8: Withdrawal of Stop ends