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[EN] First, a literature study about reinforced concrete structures in a marine environment was elaborated. The environment was found very aggressive where the ingress of chlorides defines the durability of the structure, especially the state of the reinforcement bars. Chlorides may be part of the content of concrete ingredients or may enter the structure after curation. The process proceeds via several transport mechanisms, especially diffusion. Several experiments are available to specify this chloride transport. Aiming to extend the lifecycle of concrete structures in marine environment, various protection systems are developed. The principles consist of methods for prevention of deterioration and repair works. Particular attention was given to the repair mortars, which allow to substitute the deteriorated layer of concrete and provide the reinforcement bars of a new, chloride-free protection. In a second part of the master thesis, an application of the literature study was conducted to the yachting harbour `Marina Internacional' of Torrevieja. The concrete pontoons are heavily affected by the marine environment and show a lot of visible corrosion damage. First, a general investigation charted the graduation of corrosion for the separated parts of the pontoons. Then, non-destructive tests were conducted to collect detailed information about the current state of the slabs. The evaluation indicated an unsustainable state of the pontoons, thus, a repair method was proposed. It was chosen to remove the exterior concrete layer and to replace it by a repair mortar. Sika®MonoTop-614F was determined as the most ideal repair mortar for the substrate, the scope and the environment of this project. The substance is applied by pouring and requires the setup of a formwork. After curation, the slabs should be installed on increased columns to anticipate the rising sea level. In the end, an economic analyses of the repair works estimates the costs of the whole repair project. The total budget for execution is dominated by the purchase price of the repair mortar. After the project, the harbour should be sustainable for at least another 30 years of service, on condition of a good execution, an assessment of the indicated parts and a sound inspection on a regular basis.

Pertenece a

RiuNet. Repositorio institucional de la Universitat de Valencia  

Autor(es)

NOLLET, LOUIS - 

Id.: 70181614

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveEl ingreso de cloruros - 

Tipo de recurso: info:eu-repo/semantics/masterThesis  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: Reserva de todos los derechos

Requerimientos técnicos:  Browser: Any - 

Fecha de contribución: 07-nov-2017

Contacto:

Localización:

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