PERLITE AL.FE is a volcanic rock that expands in volume up to 20 times its original volume when subjected to high temperatures. The structure of the grains is characterized by the presence of open and closed porosity.
PERLITE AL.FE is a volcanic rock that expands in volume up to 20 times its original volume when subjected to high temperatures. The structure of the grains is characterized by the presence of open and closed porosity.