Lightweight Fill Concrete
LIGHTWEIGHT FILL & CELLULAR CONCRETE
Lightweight fill concrete uses either cellular technology (foam mixed into cement slurry) or lightweight aggregates (expanded shale, clay, or slag) to produce concrete at 30-120 PCF — significantly lighter than standard 150 PCF concrete. Used for void fill (abandoned tanks, pipes, mines), roof fill (slope-to-drain), geotechnical fill (behind retaining walls), floor fill over structural decks, and any application where reduced weight is critical.
Key Highlights
Reduced weight
30-120 PCF vs standard 150 PCF for significant weight reduction.
Void fill
fills abandoned pipes, tanks, tunnels, and underground voids safely.
Geotechnical applications
lightweight backfill behind retaining walls and over structures.
Why Choose Our Lightweight Fill Concrete
Lightweight fill concrete is the solution when weight matters — filling voids, reducing loads on structures, and replacing heavy fill materials. We produce cellular concrete (foam-cement mixtures) at specified densities from 30 to 120 PCF for void fill, geotechnical applications, roof fill, and any situation requiring controlled-density, lightweight concrete fill.
Signs You Need Lightweight Fill Concrete
1. Void needs filling
Abandoned underground tanks, pipes, tunnels, or voids need to be safely filled with controlled material.
Our Process
Step 1 — Density specification
Determine required density and strength based on application requirements.
Step 2 — Production
Produce cellular concrete by mixing foam into cement slurry at the specified density.
Step 3 — Placement
Pump lightweight concrete into place — it's self-leveling and requires no vibration or compaction.
Brands & Materials
- Aerix Industries cellular concrete
- Cemstone specialty mixes
FAQs About Lightweight Fill Concrete
How light can cellular concrete be?
Cellular concrete can be produced as light as 20-30 PCF (less than 1/5 the weight of standard concrete). At these low densities it provides insulation value but minimal structural strength. Higher-density cellular (80-120 PCF) provides both weight reduction and moderate structural capacity.
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When you choose Legacy General Services for your concrete project in the NW Metro, you're choosing a partner committed to quality that lasts.
Reputation
MN-registered contractor since 2023. Insured and trusted by homeowners across the NW Metro.
Transparency
No hidden fees or surprise charges. Upfront pricing on every concrete project—big or small, start to finish.
Efficiency
On-time scheduling and reliable project timelines. We show up when we say we will and finish on schedule.
Quality
Air-entrained, freeze-thaw resistant concrete built for Minnesota winters. Every pour meets or exceeds code.