Flowable fill is a self-compacting low strength material with a flowable consistency that is used as an economical fill or backfill material as an alternative to compacted granular fill. Flowable fill is not concrete nor is it used to replace concrete. In terms of flowability, the slump, as measure for concrete, is generally greater than 8 inches (200 mm). It is self-leveling material and can be placed with minimal effort and does not require vibration or tamping. It hardens into a strong material with minimal subsidence.
Uses of Flowable Fill include:
- BACKFILL – sewer and utility trenches, bridge abutments, conduit encasements, pile excavations, retaining walls and road buts.
- STRUCTURAL FILL – foundation sub-base, subfooting, floor slab base, pavement bases and conduit bedding.
- OTHER USES – abandoned mines, tunnel shafts and sewers, underground storage tanks, wells, basements and underground structures, voids under pavement, erosion control, and thermal insulation with high air content flowable fill.
Available by the cubic yard with Type I or Type III cement.