Expanded clay is a lightweight porous building material obtained by firing clay or shale. Expanded clay gravel has an oval shape. Expanded clay rubble differs only in that its grains are mostly cubic in shape with sharp edges and corners. It is also produced in the form of sand - expanded clay sand. Depending on the mode of processing of clay or slate, it is possible to obtain expanded clay of various bulk density (volumetric weight) - from 350 to 600 kg/mâ³ and above. Used as a heater in the form of backfill, as well as for the production of lightweight concrete - expanded clay concrete. Expanded clay is also used in agriculture and hydroponics; it is used in domestic floriculture and as part of the soil in terrariums. Expanded clay, whose price is at a very affordable level, not only for construction organizations, but also for individuals, is in high demand. Due to its unique properties this building material is most in demand as: Economical insulation, used for walls, floors, ceilings, basements; Filler for lightweight concrete; Decorative material, allowing ensuring proper thermal insulation of soil and lawns; Drainage and thermal insulation material for earth embankments of roads, the laying of which is carried out in water-saturated soils.
