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Manifestaciones externas de alteración por procesos físico-químicos el hormigón de presas. Causas e identificación

Authors: Menéndez, Esperanza;

Manifestaciones externas de alteración por procesos físico-químicos el hormigón de presas. Causas e identificación

Abstract

Las características de las presas de hormigón, por el proceso de curado, las cargas y las condiciones ambientales de exposición, hacen que se puedan producir diversas manifestaciones externas asociadas con algún tipo de alteración. Estas manifestaciones suelen ser las siguientes: fisuración, hinchazón, desagregación, disgregación, cambio de color y eflorescencias. La aparición de estos síntomas de alteración se debe a distintas causas, como acciones mecánicas, químicas, físicas o biológicas. Algunas de las alteraciones observadas a nivel macroscópico se asocian de una forma más o menos clara con un determinado fenómeno, pero no siempre es fácil reconocer el origen de la alteración en una inspección visual. Por otra parte, dependiendo del origen de la alteración puede haber una incidencia muy diferente en la durabilidad y en la seguridad de la presa. Y su mitigación y reparación será más o menos sencilla dependiendo de la evolución del fenómeno. Debido a esto es esencial que, a partir de las inspecciones visuales, se pueda obtener la mayor información posible, con el fin de encaminar los análisis u estudios necesarios para una correcta diaqnosis y reparación en su caso. En el presente trabajo se analizan estos fenómenos desde el nivel macroscópico hasta el microscópico.

Trabajo presentado a las XI Jornadas Españolas de Presas y Energía Hidroeléctrica, celebradas en León del 26 al 29 de junio de 2018.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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