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

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

Description

Title: Relation Between Corrosion Degree And Pressure Needed To Produce The First Crack And Evolution Of Crack Width In Natural Exposure
Author/s:
  • Andrade Perdrix, María del Carmen
  • Muñoz, A.
  • Torres Acosta, Andres
Item Type: Presentation at Congress or Conference (Article)
Event Title: 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS
Event Dates: 23/05/2010 - 28/05/2010
Event Location: Jeju, Corea
Title of Book: Proceedings of the 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS
Date: 2010
Subjects:
Freetext Keywords: Corrosion, crack width, concrete cover, formulas
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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

More information

Item ID: 9334
DC Identifier: http://oa.upm.es/9334/
OAI Identifier: oai:oa.upm.es:9334
Deposited by: Memoria Investigacion
Deposited on: 24 Oct 2011 09:46
Last Modified: 14 May 2020 08:35
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