World Pioneer in the BI-DIRECTIONAL TEST, advanced technology that simplifies the load test and ensures more technical quality and safety in the service at a reduced cost.

Bi-directional Test x Conventional “head-down” Test

The main difference in the loading test performed by Arcos is that there is no need for a complex reaction system on the pile head, since the pile is the reaction system itself.

ABOUT THE TEST

The test initiates with the incorporation of one or more Expancell placed at or near the toe of the pile (neutral point/plane).  The cell expands when hydraulic pressure is applied, that breaks the bond between the cell plates and creates a fracture zone that separates the pile into an upper and lower length, which are pushed upward and downward by the cell pressure applied in the test.

The test consists of applying load increments to the pile by increasing pressure in the cell and recording the telltale movements (telltale extending from the cell top plate and telltale to measure the pile toe displacement) and pile head movement.

After reaching the maximal load the load is removed in equal decrements and then is grouted under pressured to fill the voids.

Advantage:

For bored piles and drilled shafts, the test provides the ability to prove whether or not clean-up and removal of debris from the bottom of the shaft has been successful.

Types of pile:

• Barrette
• CFA Pile
• Hollow driving pile (concrete precast)
• Root pile
• Offshore bored pile
• Bored pile

STATIC LOADING TEST WITH EXPANSIVE CELLS | BI-DIRECTIONAL TEST

BI-DIRECTIONAL TEST |CFA PILE