Relation Between Corrosion Degree And Pressure Needed To Produce The First Crack And Evolution Of Crack Width In Natural Exposure

Andrade Perdrix, Maria del Carmen; Muñoz, A. y Torres Acosta, Andres (2010). Relation Between Corrosion Degree And Pressure Needed To Produce The First Crack And Evolution Of Crack Width In Natural Exposure. En: "7th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS", 23/05/2010 - 28/05/2010, Jeju, Corea.

Descripción

Título: Relation Between Corrosion Degree And Pressure Needed To Produce The First Crack And Evolution Of Crack Width In Natural Exposure
Autor/es:
  • Andrade Perdrix, Maria del Carmen
  • Muñoz, A.
  • Torres Acosta, Andres
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS
Fechas del Evento: 23/05/2010 - 28/05/2010
Lugar del Evento: Jeju, Corea
Título del Libro: Proceedings of the 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS
Fecha: 2010
Materias:
Palabras Clave Informales: Corrosion, crack width, concrete cover, formulas
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Reinforcement corrosion leads into several damage types which influence the structural loadbearing capacity, among which can be mentioned the cracking of concrete cover. This work presents results of crack width generated in concrete elements fabricated in 1990 with chlorides added in the mix and exposed to the natural atmosphere of Madrid-Spain climate. These elements, one T beam and one column. Two expressions have been fitted to the results: w = k Px / (c/φ) and w = k Px / Ro, where w is a crack width in the time, k is a proportional factor, Px is the corrosion penetration in the time, c/φ is the concrete cover/diameter relation and Ro is the original radius of the bar. The expressions were also fitted to results taken from the literature made applying a current. The beam shows larger crack widths than the beam and the accelerated tests give intermediate results. Based in all the results, although the scatter is important, it has been calculated the k and k’ slopes which resulted respectively in values of 9.5 and 35.5

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ID de Registro: 9334
Identificador DC: http://oa.upm.es/9334/
Identificador OAI: oai:oa.upm.es:9334
Depositado por: Memoria Investigacion
Depositado el: 24 Oct 2011 09:46
Ultima Modificación: 20 Abr 2016 17:47
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