Pile walls for construction pit sheeting are created by making primary and secondary concrete piles, which are either secant (overlapping) or tangent (abutting) or drilled. Sometimes, the piles form an underground earth-retaining wall. In the case of a secant pile wall, it is also water-inhibiting. As a member of ABEF (the Belgian Association of Foundation Contractors), CVR participated in meetings of the ‘sheeting’ working group of the BBRI. This working group forms the basis of the implementation sheet ‘secant pile walls’.
In 1994, CVR was the pioneer in Belgium for the realisation of secant pile walls with a small pile diameter (43 centimetres). We now bore secant pile walls up to twenty metres deep with diameters of 43, 53 or 63 centimetres. A possible alternative for the traditional concrete secant pile wall is the self-developed CVR C-Mix® pile wall.
We drill a secant pile wall in different phases. There are primary and secondary piles. The primary piles are installed first. The secondary piles overlap the primary piles. The reinforcement comes in between the secondary piles.
