Standard concrete is a dense, heavy material - and those qualities are advantageous in many applications such as footings, foundation walls and floor slabs. In contrast to standard concrete, cellular concrete is relatively light.
Cellular concrete is made by replacing the stone aggregate used in standard concrete with air bubbles. These tiny bubbles are created by blending foaming agents into the concrete during the mixing process.
Low-density. By controlling the foaming action,
it's possible to manipulate the density of cellular concrete,
creating densities that range from 15 to 120 lbs. per cubic foot.
Standard concrete has a density of about 145 lbs. per cubic foot
Excellent pumping qualities. Thanks to its high air
content and low density, cellular concrete is easy to pump -even
when long distances are involved.
Light but strong. Cellular concrete is typically
stronger than compacted fills or soils, even at its lower densities.
Permeable or non-permeable. A broad range of
applications are possible because cellular concrete can be
formulated to stop water penetration or allows it to drain through
Self-leveling. Cellular concrete has excellent flow
characteristics. It performs well at filling voids and flowing to
form a level surface.
Insulating. The air bubbles captured in cellular
concrete give the material much better insulating qualities than
other masonry materials.
Cellular concrete applications
Cellular concrete is a very versatile material because it's possible
to control the material's density and permeability. Here are a few of
the applications possible with this light but strong material.
Roofing. Cellular concrete (sometimes referred to
as lightweight insulating concrete, or LWIC) can be poured over a
flat roof to form a seamless layer that insulates the roof while
also improving its resistance to shear forces.
Flooring. When pumped over a rough, irregular or
worn (but structurally sound) floor, cellular concrete will cure to
a smooth, level surface that's an excellent base for finished
flooring. No screeding or leveling is required. Cellular concrete
can be used to form precast stairs, concrete balconies and appliance
Geotechnical applications. When weak soil is
encountered, pouring or injecting cellular concrete enables
technicians to significantly improve soil load-bearing qualities.
Cellular concrete can be injected into the soil or applied as a fill
material, achieving a compressive strength as high as 3000psi. Other
geotechnical applications include backfill for tunnels and retaining
walls, annular grouting for tunnels, fill for bridge approaches, and
fill for sinkholes and abandoned underground tanks, pipelines and