Question

what is pumic used for

Answer 1

Pumice is widely used to make lightweight concrete or insulative low-density cinder blocks. When used as an additive for cement, a fine-grained version of pumice called pozzolan is mixed with lime to form a light-weight, smooth, plaster-like concrete. This form of concrete was used as far back as Roman times.

Answer 2

Pumice is formed when hot lava mixes with water and hardens, resulting in a porous and abrasive stone perfect for sloughing away dry skin. To use apumice stone, soften the calloused skin in warm water, wet the stone, then gently rub the stone over the area using circular motions until you remove the dead skin.