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....
- It included seawater, lime and sand (pozzolana) and chunks of volcanic rock from the Bay of Naples - the same source for material used in ancient construction efforts at Caesarea and elsewhere in the region.
- The Romans invented concrete, mixed from pozzolana, a volcanic ash mined on the slopes of Mount Vesuvius, which forms a natural cement when combined with lime.
Origin
Early 18th century: from Italian, from pozz(u)olana '(earth) of Pozzuoli', a town near Naples.
- well-affectioned
- well-aged
- well-aimed
- well-aired
- Welland Canal
- Welland Ship Canal
- well and truly
- well-annealed
- well-anointed
- well-apparelled
- well-applied
- well appointed
- well-approved
- well-argued
- well-armed
- well-armored
- well-armoured
- well-arranged
- well-arrayed
- well-articulated
- well-asserted
- well-assorted
- well-assured
- well attended
- well-attending