Fine washed natural 0/2 mm sand is silicic in nature and fine granulometry
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The 6/12 LAFAC aggregate is a product obtained in a limestone crushing process.
LAFAC washed natural 0/4 mm sand is a natural siliceous / calcareous aggregate, with a coarse grain size of 4 mm, from an extraction zone made up of sedimentary river material.
The LAFAC mix (sand + gravel) is a composition of 0/4 natural sand and 4/12 mm gravel.