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handle: 10261/346867
[ES] En este trabajo, se plantea un nuevo procedimiento para estudiar la aparicion y combinacion de diferentes iones en las etapas iniciales de hidratacion del Cemento. Se determinan las condiciones idoneas de aplicacion del mismo, y se aplica en el estudio de un cemento Portland ordinario, un cemento con adicion de ceniza volante y un cemento con escoria de horno alto. Se pone de manifiesto que este procedimiento de medida permite la discriminacion de fenomenos que se producen en cortos espacios de tiempo y cuya discriminacion no es posible aplicando los procedimientos habituales de ensayo de cemento. Se obtienen respuestas muy diferentes para cada familia de material estudiado y se relaciona esta respuesta con la presencia de iones en el material.
[EN] This work proposes a new procedure to study the appearance and combination of different ions in the first steps of cement hydration. The suitable conditions of work are identified, and these conditions are applied to ordinary Portland cement and also to two cements with a partial substitution by fly ashes and slags. With the results obtained is clear that the measurement process permits the discrimination of phenomena that appear in a short space of time, and which it is not possible by the traditional methods of cement test. The responses found are very different for the different families of materials studied and these are related with the presence of ions in the material.
This work has been possible to the financing of the Spanish MEC (project MAT2007-66845-C02-02) and of the action 139/Q06 0915-110 financed by the CAM-UPM.
Peer reviewed
Electroquímica, Electrical impedance, Cement, Electrochemistry, Hydration, Cemento, Hidratación, Impedancia electrica
Electroquímica, Electrical impedance, Cement, Electrochemistry, Hydration, Cemento, Hidratación, Impedancia electrica
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