Vermiculite is a form of mica that expands when heated. A principal derived from this material is Zonolite stabilized concrete aggregate. Zonolite, when mixed with a Portland cement binder, in lieu of sand gravel aggregate and gravel aggregate, produces a lightweight insulating concrete. Weight per cubic foot is reduced from 140 lbs. to the 18-37 pounds per cubic foot range. Insulation values are increased 20 or more times those of structural concrete.
AVI is a leading manufacturer of a wide range of quality products for use in all areas of construction, produced under licenses from W.R. Grace and Co., U.S.A. These include fire protection materials, wall and roof Insulation, Acoustical insulation and a wide range of Horticultural soils.
AVI dedication to the industry through ongoing research programs results in product improvements and new, innovative materials. AVI is a company with a heritage of proven performance, at present geared to state of the art technology, a future limited only by imagination and a commitment to remain one step ahead of a changing world.