pozzolana cement

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• cement — cementable, adj. cementer, n. cementless, adj. /si ment /, n. 1. any of various calcined mixtures of clay and limestone, usually mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various… …   Universalium

• Pozzolana — Pozzolana, also known as pozzolanic ash, is a fine, sandy volcanic ash, originally discovered and dug in Italy at Pozzuoli in the region around Vesuvius, but later at a number of other sites. Vitruvius speaks of four types of pozzolana: black,… …   Wikipedia

• pozzolana — /pot seuh lah neuh/; It. /pawt tsaw lah nah/, n. a porous variety of volcanic tuff or ash used in making hydraulic cement. Also, pozzolan /pot seuh leuhn/, pozzuolana /pot sweuh lah neuh/; It. /pawt tswaw lah nah/, puzzolan, puzzolana. [1905 10;… …   Universalium

• pozzolana — or pozzolan noun Etymology: Italian pozzolana Date: circa 1706 finely divided siliceous or siliceous and aluminous material that reacts chemically with slaked lime at ordinary temperature and in the presence of moisture to form a strong slow… …   New Collegiate Dictionary

• pozzolana — noun A type of volcanic ash used for mortar or for cement which sets under water. See Also: pozzolan, pozzolanic …   Wiktionary

• pozzolana — [ˌpɒtsə lα:nə] noun a type of volcanic ash used for mortar or for cement that sets under water. Origin C18: from Ital., from pozz(u)olana (earth) of Pozzuoli , a town near Naples …   English new terms dictionary

• pozzolana — n. (also puzzolana) a volcanic ash used for mortar or hydraulic cement. Etymology: It., f. pozz(u)olano (adj.) of Pozzuoli near Naples …   Useful english dictionary

• slag cement — noun : a pozzolana cement using slag as the pozzolana material * * * a cement composed of about 80 percent granulated slag and about 20 percent hydrated lime. [1880 85] …   Useful english dictionary

• Clinker (cement) — Typical clinker nodules Hot clinker In the manufacture of …   Wikipedia

• Indian cement industry — India is today the second largest producer of cement in world with an installed capacity of close to 155 million tonnes per year. 95 % is consumed domestically and only 5% is exported. Demand is growing at more than 10 % per annum. More than 90 % …   Wikipedia

• hydraulic cement — noun a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result • Syn: ↑Portland cement • Hypernyms: ↑cement * * * noun : a cement that is capable of hardening under water see portland cement,… …   Useful english dictionary