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SAND
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Mar 20, 2009 - 3:41:10 PM
Mar 20, 2009 - 3:41:10 PM
Material
extracted from quarries, crushed or processed, it is
necessary for the gravel to come from lasting, resistant and
solid materials, without harmful particles that may harm the
setting of concrete. It is used in the manufacturing of
blocks and other prefabricated elements in the manufacturing
of tubes and mixtures, as well as in special types of
concrete.
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