Inspección de una losa de 70 años de un edificio en el Golfo de México
Abstract
RESUMEN
El muelle de Progreso alberga un edificio de setenta años de antigüedad, expuesto a un ambiente agresivo en el Golfo de México. Debido a la exposición a cloruros y la falta de mantenimiento, su losa mostró sÃntomas de corrosión y desprendimientos de concreto. En una inspección estructural previa se sugirió un costoso y poco comprensible método de reparación, lo cual hizo pensar a las autoridades portuarias en la demolición sin prever daños colaterales a otros elementos como columnas y vigas. Debido al nivel de deterioro, los autores de este trabajo sugirieron una segunda inspección antes de demoler, la cual se realizó en zonas representativas. El objetivo de este trabajo es discutir detalles y resultados de ésta y de la inspección previa, asà como del diagnóstico, el cual indicó la necesidad de demoler partes especÃficas de la cubierta inferior de la losa y la sustitución de la armadura por CFRP.
Palabras clave: Inspección; reparación; cloruros; técnicas electroquÃmicas.
ABSTRACT
The Progreso pier has a head which is a seventy year-old building that is exposed to an aggressive environment in the Gulf of Mexico. As a consequence of the chloride exposure and lack of maintenance, the slabs have shown strong deterioration symptoms. A previous structural inspection suggested a very expensive and non well understood method to repair the slab, which made the authorities to think about demolition in spite of the collateral damage to other elements like columns and beams. Because of the deterioration level, the authors of this paper suggested a second inspection before demolishing and it was performed on selected parts of the slab. The objective of this work is to discuss details and results of this and previous inspection and diagnosis. The new diagnosis indicated the need of demolishing specific parts of the lower concrete cover of the slab and the substitution of the reinforcement by CFRP.
Keywords: inspection; repair; chlorides; electrochemical techniques.
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References
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