What is cellular concrete?
Cellular concrete is a lightweight, flowable material that can be formed on-site to a variety of shapes and sizes. It is a versatile, durable construction material that has been used for centuries. It is commonly used as a filler in between brick walls, as an insulator for roofs and floors, or as a form for precast slabs. It also has the ability to be carved, shaped and sculpted with chain saws or hand tools to create unique artwork.
While many people are familiar with the product in the vertical construction industry, its use is growing quickly in the civil market. It is especially useful in grouting tunnels and pipelines because it is lighter in density than traditional sand-cement grouts, which reduces the buoyant force on the pipe. This allows installers to place the grout closer to the pipe, reducing costs on the project by cutting down on the number of supports that have to be placed in the ground.
Another benefit of cellular concrete is that it is made on-site, which reduces the need for transportation. This also cuts down on the cost of traffic control, supervision and any other support services that may be required on the job site. The material can be produced at high daily volume and pumped significant distances.
The primary differences between cellular concrete and aerated concrete are that aerated concrete requires a chemical reaction inside the slurry itself to generate the air voids for its density reduction, while cellular concrete uses externally generated foam for this purpose. The resulting product is similar in strength to standard concrete, and can be designed per the needs of each specific project.
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