单词 | pozzolana |
释义 | pozzolana/ˌpɒtsəˈlɑːnə![]() noun [mass noun] A type of volcanic ash used for mortar or for cement that sets under water.The ashes have been potential pozzolanic materials suitable for use in lime - pozzolana mixes and for Portland cements replacement....
OriginEarly 18th century: from Italian, from pozz(u)olana '(earth) of Pozzuoli', a town near Naples. |
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