Re:On Geofoam
by falcolas on Thursday July 29, 2021 @10:41AM
(#27997112)
Um, this is expanded polystyrene, just with a fancy "polite" name. Per TFA:
Despite its uncanny appearance, geofoam is incredibly prosaic. Essentially, it’s polystyrene. Expanded polystyrene (EPS) geofoam — the most common type — is made from small polystyrene resin beads that contain microscopic cells filled with a blowing agent, which expand when exposed to steam under controlled pressure and are molded and fused into a brick shape.
Despite its uncanny appearance, geofoam is incredibly prosaic. Essentially, it’s polystyrene. Expanded polystyrene (EPS) geofoam — the most common type — is made from small polystyrene resin beads that contain microscopic cells filled with a blowing agent, which expand when exposed to steam under controlled pressure and are molded and fused into a brick shape.