Pozzolana or pozzuolana, also known as pozzolanic ash (Latin: pulvis puteolanus), is a natural siliceous or siliceous-aluminous material which reacts with calcium hydroxide in the presence of water at room temperature (cf. pozzolanic reaction). In this reaction insoluble calcium silicate hydrate and calcium aluminate hydrate compounds are formed possessing cementitious pr…
Pozzolana is a very old building material that was also used in Roman times. Portland Pozzolana cement is a type of low heat cement because it produces much less heat of hydration, it has better resistance to an aggressive water attack. This reduces the leaching of calcium hydroxide when used in hydraulic constructions. Section Under Material
Pozzolans are a broad class of 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 (Ca(OH)2) at ordinary temperature to form compounds possessing cementitious properties. The quantification of the capacity of a pozzolan to react with calciu…
Pozzolans are a broad class of 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 (Ca (OH) 2) at ordinary temperature to form compounds possessing cementitious properties. [1]
La puzolana es una roca natural constituida por proyecciones volcánicas (piroclastos), tiene una estructura escoriácea y alveolar. Su color puede ser negro, gris o rojo (de un rojo ladrillo a un marrón oscuro). Las formaciones puzolánicas explotadas actualmente son principalmente los "conos estrombolianos" (acumulación de proyecciones ...
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