Diaphragm wall construction / on site / Amazing technology of Foundation Engineering

Описание: Diaphragm walls are one of the most important technologies of special foundation engineering. A diaphragm wall is constructed using a trench excavated in ground and supported by a mud fluids (typically bentonite or polimer mud) until the mud is replaced by concrete, after the steel cage installation.
Walls generally range from 600 to 1500 mm thickness, in wide between 2000 and 3500 mm and can be excavated to depths of 60m or more.

Diaphragm walls are rectangular-section excavations with a complete ground asportation that is
made in situ. The result is an underground concrete
wall.
They are essentially retention walls, which are constructed for instance at wharfs. A rectangular-section
tool is generally used to remove the soil, thus creating a rectangular excavation. Furthermore the
rectangles making up the wall must be interlocked
to ensure structural endurance and water tightness.
The diaphragm wall panel construction entails three
steps: the construction of guide wall, the panel excavation (demolition – removal - stabilization), and the
construction phase (reinforcing cage – casting – curing).

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