Pipe Jacking Bentonite performs a critical function during pipe jacking operations, acting as a supporting and lubricating agent and minimizing prepress-resistance, especially skin friction.
Pipe jacking or pipe driving is a procedure where a pipe is pressure driven by means of hydraulic presses from a pressure shaft at one end of the stretch to its final position. It is used to construct sewage pipes, collection canals, protection pipes for supply lines as well as passageways and underground hollow spaces for various purposes. The pipes are mostly of reinforced concrete and more rarely of steel, cast concrete, polymer concrete or fiber cement. Pipe jacking can be carried out both in man-sized areas (up to Ø.5m) and in areas smaller than man-sized (Ø.1m).
In order to minimize prepress-resistance, especially skin friction, the Pipe Jacking Bentonite suspension is pressed into the space between pipe and soil to act as a supporting and lubricating agent.