| 释义 |
poz·zo·la·na
\ˌpätsəˈlänə\ noun
or poz·zo·lan \ˈpätsələn\; also poz·zu·o·la·na \ˌpätsəwəˈlänə\; or puz·zo·lan \ˈpütsələn\; or puz·zo·la·na \ˌpütsəˈlänə\
(-s)
Etymology: Italian pozzolana from Medieval Latin putheolana, from Latin puteolana, feminine of puteolanus, adjective, of or belonging to Puteoli, from Puteoli (now Pozzuoli), seaport in southern Italy + Latin -anus -an
1. : an aggregate material (as volcanic ash, tuff) used by the ancient Romans as an ingredient of mortar
2. : any pulverulent siliceous or siliceous and aluminous substance that reacts chemically with slaked lime at ordinary temperature and in the presence of moisture to form a cementitious compound
3. : a mortar or hydraulic cement consisting essentially of pozzolana and slaked lime — compare portland-pozzolan cement |