Tag: pumice rock

Pumice is a light-colored volcanic rock. It’s extremely porous, with a foamy appearance. Crushing pumice rock into a powder produces a substance called pumicite or simply volcanic ash. How Pumice Forms Pumice forms when super-heated, pressurized molten rock violently erupts from a volcano. Gases dissolved in magma (mainly water and carbon dioxide) form bubbles when pressure suddenly decreases, in much the […]

The largest use of pumice in Vietnam is the production of lightweight concrete blocks and other lightweight concrete products. When this concrete is mixed, the vesicles remain partially filled with air. That reduces the weight of the block. Lighter blocks can reduce the structural steel requirements of a building or reduce the foundation requirements. The […]