Cellular concrete is engineered, low-density concrete with special properties germane to solving a sweeping assortment of construction and manufacturing challenges.
Produced by the substitution of a uniform cellular structure of air voids for some or all of the aggregate particles found in traditional concretes (air voids of up to 80 percent of total volume are common), cellular concrete is known by many names, depending
on production methods employed, ingredients used, engineered properties of the finished material, project applications, or regional and proprietary preferences.
Invented in Sweden in the second decade of the twentieth century,cellular concrete was used commercially across Scandinavia and in Germany and the United Kingdom in the 1920s and gained traction throughout Europe and much of the rest of the globe after the Second World War. In these early years, cellular concrete was produced on site with portland cement, water, and a foaming agent, and used mostly in insulating roof and floor screed applications and in underground pipe installations.
Today, cellular concretes have an established and long record of worldwide success in construction, manufacturing, and mining applications and, depending on the application, are produced either on site or at manufacturing plants.
Cellular Light Weight Concrete (CLC) is a version of lightweight concrete that is produced like normal concrete under ambient conditions. It is produced by initially making slurry of Cement + Sand (optional) + Fly Ash (constituting 26% – 34 % content) + water, which is further mixed with the addition of pre-formed stable foam in an ordinary concrete mixer under ambient conditions. The mixture is either poured or pumped into assembled moulds of blocks or form-work of reinforced structural elements or poured onto flat roofs or voids for thermal insulation or filling. The foam imparts free flowing characteristics to this slurry due to ball bearing effect of foam bubbles enabling it to easily flow into all corners and compact by itself in the moulds/forms without requiring any kind of vibration or compaction.
Cellular concretes are used to problem-solve a wide variety of challenges in construction, mining, and manufacturing applications.
The breadth of applications results from the ability to precisely control the density of cellular concrete materials and the numerous useful properties inherent in cellular concretes or related to density control.
Beneficial properties associated with cellular concretes include:
- Thermal insulating
- Fire resistance
- Mold resistance
- Sound absorption
- Seismic resistance
- Energy absorption
- Walk-ability (in roof deck and flooring applications)
- Nail-ability and saw-ability (pre-cast and manufacturing applications).