Glossary

Tremie Tube

What is Tremie Tube?

A tremie tube is a pipe lowered into an excavation or borehole to place backfill, grout, or concrete from the bottom up, ensuring even fill without voids after hydro excavation or utility work.

A tremie tube delivers flowable material to the base of a hole so it fills from the bottom upward, displacing water or air and preventing voids and segregation. In vacuum excavation workflows, it is used to backfill potholes and slot trenches or to place grout and concrete precisely around utilities.

Proper bottom-up placement produces a sound, compacted fill that supports the ground and protects the exposed utility. Tremie placement often follows daylighting, potholing, or pipeline exposure. Vac4Rent connects renters with the hydro excavation equipment used to open and prepare these excavations.