Vermiculite Concrete

Vermiculite Concrete

 

a variety of lightweight concrete with as welled-vermiculite aggregate. Cement, bitumen, soluble glass, synthetic resins, and other materials serve as binding agents. Thermal-insulating vermiculite concrete, with a density of 250-400 kg/m3 and a coefficient of thermal conductivity of 0.08-0.10 watts per m·°K [1W/(m · °K) ≈ 0.86 kcal/(m · hr · ° C)] is utilized in manufacturing slabs, shells, sections, and blocks; for the thermal insulation of industrial equipment and pipelines; and also to heat surrounding structural components. The highest temperatures for thermal-insulating vermiculite concrete are 600° C with a cement binder and 150° C with a synthetic binding agent. Structural thermal-insulating vermiculite concrete is used in manufacturing wall panels, roofing slabs, and other components; it has a density of 600-900 kg/m3, a coefficient of thermal conductivity of up to 0.19 W/(m·°K), and a compressive strength of up to 3.5 meganewtons per sq m (35 kilograms-force per sq cm). Such vermiculite concrete, with either a cement or soluble-glass binder with additives, is also fire-resistant and may be used at temperatures up to 800° C.

REFERENCE

Proizvodstvo i primenenie vermikulita. Edited by N. A. Popov. Moscow, 1964.

G. A. BUZHEVICH

vermiculite concrete

Concrete in which the aggregate consists of exfoliated vermiculite.
References in periodicals archive ?
An 8-to-1 layer of perlite or vermiculite concrete on the outside of the dome can reduce the amount of ceramic fiber insulation required.
Tenders are invited for Additional work by Fixing of Safety grills & Aluminium Composite panels and laying of vermiculite concrete at Majas Market building at
Tenders are invited for Additional work by Fixing of Safety grills & Aluminium Composite panels and laying of vermiculite concrete at Majas Market building at CTS No.171/2, 175-A/3 of village Majas, JVLR, Andheri (E), in K/East Ward.