Cement and Pozzolana

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Difference between Cement and Pozzolana

Cement vs. Pozzolana

A cement is a binder, a substance used for construction that sets, hardens and adheres to other materials, binding them together. Pozzolana, also known as pozzolanic ash (pulvis puteolanus in Latin), is a natural siliceous or siliceous and aluminous material which reacts with calcium hydroxide in the presence of water at room temperature (cf. pozzolanic reaction).

Ancient Rome

In historiography, ancient Rome is Roman civilization from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD, encompassing the Roman Kingdom, Roman Republic and Roman Empire until the fall of the western empire.

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Calcium hydroxide

Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH)2.

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Cement chemist notation

Cement chemist notation (CCN) was developed to simplify the formulas cement chemists use on a daily basis.

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Chemical reaction

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

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Clay minerals

Clay minerals are hydrous aluminium phyllosilicates, sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations found on or near some planetary surfaces.

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Concrete

Concrete, usually Portland cement concrete, is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens over time—most frequently a lime-based cement binder, such as Portland cement, but sometimes with other hydraulic cements, such as a calcium aluminate cement.

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Energetically modified cement

Energetically modified cements (EMC) are a class of cementitious materials made from pozzolans (e.g. fly ash, volcanic ash, pozzolana), silica sand, blast furnace slag, or Portland cement (or blends of these ingredients).

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Fly ash

Fly ash, also known as "pulverised fuel ash" in the United Kingdom, is a coal combustion product that is composed of the particulates (fine particles of burned fuel) that are driven out of coal-fired boilers together with the flue gases.

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Italy

Italy (Italia), officially the Italian Republic (Repubblica Italiana), is a sovereign state in Europe.

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Lime (material)

Lime is a calcium-containing inorganic mineral in which oxides, and hydroxides predominate.

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Metakaolin

Metakaolin is the anhydrous calcined form of the clay mineral kaolinite.

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Portland cement

Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout.

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Pozzolan

Pozzolans are a broad class of siliceous or siliceous and aluminous materials which, in themselves, possess little or no cementitious value but which will, in finely divided form and in the presence of water, react chemically with calcium hydroxide at ordinary temperature to form compounds possessing cementitious properties.

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Pozzolanic activity

The pozzolanic activity is a measure for the degree of reaction over time or the reaction rate between a pozzolan and Ca2+ or Ca(OH)2 in the presence of water.

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Pozzuoli

Pozzuoli is a city and comune of the Metropolitan City of Naples, in the Italian region of Campania.

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Roman concrete

Roman concrete, also called opus caementicium, was a material used in construction during the late Roman Republic until the fading of the Roman Empire.

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Santorini

Santorini (Σαντορίνη), classically Thera (English pronunciation), and officially Thira (Greek: Θήρα), is an island in the southern Aegean Sea, about 200 km (120 mi) southeast of Greece's mainland.

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Silica fume

Silica fume, also known as microsilica, (CAS number 69012-64-2, EINECS number 273-761-1) is an amorphous (non-crystalline) polymorph of silicon dioxide, silica.

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Volcanic ash

Volcanic ash consists of fragments of pulverized rock, minerals and volcanic glass, created during volcanic eruptions and measuring less than 2 mm (0.079 inches) in diameter.

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