Special Foundations

“The foundation is that part of a structure in direct contact with the ground, to which it binds the structure and transfers the loads imposed by it” (Prof. Carlo Viggiani). This method is based on the excavation of the soil stabilized with drilling fluids (e.g. bentonite and/or polymer-based) and its displacement with directly pumped cement/concrete. The ground stratigraphy guides the choice of the right ingredient and any modifications. In details:
– Bentonite muds form impermeable barriers on the walls of the excavation to prevent liquid leaking in or out
– The gel strength of the mud limits its penetration into the formation, keeping the ground near the excavation stable
– Drilling fluids encapsulate sediments, facilitating their transport out of the excavation site for subsequent removal

Diaphragm Walls

A Diaphragm Wall is a structure in reinforced concrete constructed in situ panel by panel using bentonite slurry (generally natural sodium bentonite), to facilitate its construction.

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Drilled piles & Micropiles

Drilled piles are used to support high-rise buildings able to produce substantial vertical loads. Drilled piles are generally constructed using special excavating tools such as buckets or clamshell buckets. The drilling method depends on the stratigraphy of the soil.

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Barrettes

Barrettes are high-capacity load bearing foundations constructed using support muds. The use of Barrettes often accompanies the construction of Diaphragm Walls as the same methods and equipment are used for both techniques. For this reason “Barrettes” are the ideal solution for foundations of high-rise buildings with deep basements.

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Cut off Walls

They are permanent or temporary containment barriers constructed in a ternary mixture using sodium bentonites strictly balanced to work with concrete.

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