backfill concrete

backfill concrete

A non-structural concrete used to prepare a surface to receive structural concrete, to fill excavated pockets in rocks, or to correct over-excavation.
References in periodicals archive ?
Superstructures To Vault Back - 200 M3 Backfill Concrete Installation, -
/ Rubble / lean / Negative / backfill concrete) 60 m3 Situ concrete dyed 140 m3 Formwork type 4-124 / 2-1 / 1 550 m2 Rod reinforcements (conventional / schraub.