pozzolana | Definition, Description, History, Composition, Facts ...
Pozzolana was first found at Puteoli (modern Pozzuoli ), near Naples, where there are still extensive beds, and also around Rome. Natural pozzolana is often composed mainly of a fine chocolatered volcanic earth. Industrial, artificial pozzolans are produced in furnaces where organic materials, such as coal, are burned and the ash is reclaimed.
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