Cellular concrete

Dispersions of gas in solids are also called foams but the foam cells (bubbles) formed are isolated from one another. An example of such foams are the natural porous materials, cellular concrete, cellular glass and polymer foams. However, if in such disperse systems both phases are continuous (such as in many foamed polymers), they are called sponges. Many porous materials are partially sponge and partially solid foam. The properties of solid foams differ drastically from those of foams with liquid dispersion medium. At the same time the strength and other physical and mechanical characteristics of solid foams depend significantly... 

Another technique of solid foam preparation is based on gas formation in a melted polymerising bulk or in concentrated water suspension of binding materials (cement, gypsum, lime), occurring after physical or chemical processes. It is also possible to incorporate air in a polymerising or solidifying substance bulk. For example, cellular-concrete represents a material in which gas bubbles are uniformly distributed in the bulk. The material produced when suspensions of binding substances are mixed with a foam is called cellular (foam) concrete. If the gas is formed in the concrete bulk as a result of a chemical reaction, for instance, in the reaction of aluminium powder with the liquid phase of the concrete solution, a gas-concrete is produced. 

Applications other than thermal insulation and medical uses include packaging insert cushions, cellular concrete, low-density cores... 

Stepanform. [Stq>an] Anionic-nonionic blends emulsifier ftv v etable dls in non-edible q>plics. foaming agent ftn cellular concrete, drilling. 

Steposol . [Stepan] Ammonium ether sulfate for gypsum board, cellular concrete, air drilling, foam cleaners. 

Nanoconcrete technologies involve strength enhancement of cellular concrete by use of nanofiber material. 

Aerated Concrete. Concrete with a high proportion of air spaces resulting from a foaming process the bulk density may vary from about 560-1440 kg/m (35-90 Ib/ft ). Aerated concrete is chiefly used for making pre-cast building units. It is also known as gas concrete, CELLULAR CONCRETE Or FOAMED CONCRETE. 

Cellular bricks are usually made by pressing whereas perforated BRICKS (q.v.) are made by extrusion. Cellular Concrete. See aerated concrete. 

REINFORCED CONCRETE ordinary concrete CELLULAR CONCRETE COOLING SPACE HEATING SPACE... 

IR and microwave radiation. The one-dimensional physical model describing heat and mass transfer allows access to the temperature, moisture content and pressure fields, while energy inputs induced by electromagnetic radiation were determined by the Lambert-Beer law. A comparison of experimental and simulated results on cellular concrete demonstrated the relevance of this model to studies on combined drying. 

The values of the expansion coefficients pointing to Eurocode 6 [2] suggest that not all masomy elements expand with heat (cellular concrete cured and autoclaved lightweight aggregate concrete shrink at high temperatures). 

We focus on mineral foams defined as porous stracture obtained with a mineral matrix, starting from slurry or paste. Cellular concrete [1] is an example with quite good compromises. Its stracture presents cells size ranging from 0.2 to 2 mm with a wall thickness around 0.1 mm. Foam is obtained at fresh state, before the thermally activated hardening of the mineral binder. 

Uses Foaming agent, air enirainer for cellular concrete Properties CL liq. 37% act. 

Uses Foaming agent yielding expanded foam volume with stability for firefighting, cellular concrete, air and mist drilling Properties Yel. cl. liq. 40% act. 

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