AUSPERL VERMICULITE GRADE3 100 BAGS

AUSPERL VERMICULITE GRADE3 100 BAGS

$51.50

Quick description:

Vermiculite is one of the world’s most unique minerals. A hydrated Magnesium Aluminium Silicate, it is lightweight, inorganic (incombustible), compressible, highly absorbent, and non-reactive, and is used in thousands of applications including potting soils and growing mixes.

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Description :

Vermiculite is used in thousands of applications from potting soils, lightweight concrete, fire protection construction materials, intumescent applications, as a UN approved packaging material for the safe shipment of hazardous liquids, texturisers in paints, and coatings, and most recently as nanocomposites for films, coatings, and barrier applications. When subjected to heat vermiculite has the unusual property of exfoliating or expanding into worm-like pieces (the name vermiculite is derived from the Latin ‘vermicular’ – to breed worms).

This characteristic of exfoliation, the basis for commercial use of the mineral, is the result of the mechanical separation of the layers by the rapid conversion of contained water to steam.

The increase in bulk volume of commercial grades is 8 to 12 times, but individual flakes may exfoliate as many as 30 times. There is a colour change during the expansion that is dependent upon the composition of the vermiculite and furnace temperature.

The bulk density of crude vermiculite or vermiculite concentrate is in the range of 640-1120 kg/m³ and exfoliated or expanded vermiculite is in the range of 64-160 kg/m³

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