por johan david valderrama palacios 4 anos atrás
520
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Por ser muy exotermico
Aumento de la porosidad
La resistencia elevada disminuye con el tiempo
Refractario
Se caracteriza por su fraguado en pocos minutos
Este cemento la pulzona se cambia por la ceniza de carbón para su uso
Este cemento está compuesto por cenizas volcánicas que se encuentra en la región de lazio
Este cemento consta de otros componentes como la pulzona y otros componentes
Esta compuesto por la bauxita con impurezas de oxido de hierro, titanio y cilicio
Este cemento es lo contrario a el férrico tiene muy poco hierro
caracterizado por que es muy rico en hierro
Se obtienen del cemento portland pero las características son diferentes
Utilizado como aglomerante para la preparación del hormigón
sirve como ligante o aglomerante (sirve para unir) en la fabricación de morteros y hormigones. Para eso se fusiona con los áridos (arena, polvo de piedra, ripio...) y el agua.
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Es una mezcla de caliza y arcilla calcinadas y molidas..
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pasta
yeso
greda
arcilla
cal
mortero
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Issue.
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Example: 'Jesse drew the way some people drank whiskey. (...) Lord, he loved to draw. (...) When he was in first grade, he told his father that he wanted to be an artist when he grew up.' (Paterson, 2. 7)
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Point of view
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Esto es debido a las impurezas de las materias primas. Al silicato tricálcico se le conoce como Alita (C3S), al silicato dicálcico se le denomina Belita (C2S), el ferrito aluminato tetracálcico (C4AF) es la ferrita y celita al aluminato tricálcico (C3A)
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Decide on the second point of view
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y la adición del regulador del fraguado que es el yeso, el cual contiene trióxido de azufre (SO3).
Oxido de calcio (CaO) aportado por la cal
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Dióxido de silicio (SiO2), el cual se encuentra en la arcilla junto con el óxido de aluminio (Al2O3) y el óxido de hierro (Fe2O3),
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Calor y Hidratación
Propiedades
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Es un material con propiedades de adherencia y cohesión, de origen mineral y que esta caracterizado por tener una gran dureza. Obtiene estas propiedades mediante reacciones de hidratación y las conserva posteriormente incluso debajo del agua. Si lo mezclamos con grava y áridos obtendremos el hormigón o concreto..
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Example: 'Jesse drew the way some people drank whiskey. (...) Lord, he loved to draw. (...) When he was in first grade, he told his father that he wanted to be an artist when he grew up.' (Paterson, 2. 7)
Endurecimiento
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Resistencia