Cellular concrete / cellular grout
Preformed foam plus cement slurry. Specify cast density at placement — about 27 to 100 pcf — for tank and pipe decommissioning, void fill, and foundation or abutment backfill. Delivered from the Estacada plant across Greater Portland Metro by Volume Concrete.
What it is
Cellular concrete — also called cellular grout — is a cementitious mix with a foamed cellular structure. It is placed as a fluid, then sets in place. The primary spec is cast density at placement, in pounds per cubic foot.
A neat Type IL cement slurry (the featured carrier is about ~108 pcf) is expanded with preformed foam from Aerix Industries AERLITE / AERLITE-iX. Sand is optional. Permeable and non-permeable mixes are both available, from about 27 to 100 pcf.
This is not everyday heavy CLSM. Conventional flowable fill is still a relatively heavy cementitious fill. Cellular grout is foamed down to a specified low density so the fill stays light and pumpable.
It is also not polyurethane foam fill. PU foam is a polymer. Cellular Backfill is a cementitious grout that sets like concrete at the density you call out.
Applications
Tank and pipe decommissioning, void fill, foundation backfill, and abutment work. Slip-liner / annular grouting is a common related placement.
Specs & options
The primary knob is cast density at placement. The ~38 pcf cellular grout is a featured example — typical strengths on that mix are approximate, not a universal guarantee.
Unit weight range
~27–100pcf
Featured example mix
Non-permeating cellular grout for slip liner / underground pipe decommissioning, void filling, and backfill. Includes fine aggregate (sand).
Strengths are typical maturity from the mix packet — approximate, not a guarantee of in-place performance. Final density and strength depend on foam generation and placement.
How it is made
Neat cement slurry used as the carrier before foam expansion. Type IL cement and foam from Aerix Industries AERLITE / AERLITE-iX expand that carrier to the specified cast density at placement.
Density range
~27–100 pcf
The primary spec is cast density at placement. Call out a unit weight from about 27 to 100 pcf. The 38 pcf mix is one example, not the only option.
Sand in mix
Available
Sand can be included. The featured ~38 pcf grout uses fine aggregate (sand) from the Estacada plant.
Permeability
Both available
Permeable and non-permeable options are available. The featured ~38 pcf grout is non-permeating.
Why cellular
Use cellular concrete when the job needs a fill that is light, pumpable, and specified by cast density. These are material characteristics — not a substitute for project engineering.
Cast density is specified far below conventional soil or heavy flowable fill, which can reduce load on structures and soils.
The mix is placed as a fluid. It can be pumped into tanks, pipe interiors, annular space, and other tight access where dump-and-compact fill will not go.
Flowable placement occupies irregular voids without mechanical compaction the way soil fill requires.
Once the grout sets, the low unit weight can reduce lateral load on foundation walls compared with conventional backfill. Confirm design values with the project engineer. This is not a waterproofing claim.
Service area
Cellular Backfill is batched at the Estacada plant and delivered by Volume Concrete. Call with cast density, permeable or not, volume, and access.
Delivered by
Volume Concrete
ready-mix company serving Greater Portland Metro
Request a quote
The fastest path is a phone call. Have cast density, permeable or not, volume, and access ready if you know them.
Primary contact
(971) 219-8604Estacada plant · Volume Concrete
Secondary: billing@volumeconcrete.com · volumeconcrete.com