Modelling of chloride penetration in concrete with artificial cracks

Title: Modelling of chloride penetration in concrete with artificial cracks
Author(s): K. Audenaert, G. De Schutter, L. Marsavina
Paper category : conference
Book title: International RILEM Symposium on Concrete Modelling - ConMod '08
Editor(s): E. Schlangen and G. De Schutter
Print-ISBN: 978-2-35158-060-8
e-ISBN: 978-2-35158-076-9
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 439 - 446
Total Pages: 8
Nb references: 15
Language: English

Abstract: The durability of concrete is a very important issue in actual concrete research. The service life of concrete structures can severely be reduced by the influence of cracks, caused by earlyage thermal cracking due to heat of hydration, or cracking due to shrinkage, impact or overloading in combination with subsequent acceleration of degradation owing to, for example, chloride penetration.
The Magnel Laboratory for Concrete Research, Ghent University, Belgium and the "Politehnica" University of Timisoara, Romania are working on a bilateral project concerning the numerical simulation of the influence of crack formation on chloride penetration in reinforced concrete. In a first step, the chloride penetration in unreinforced concrete specimens with artificial cracks is considered.
In order to simulate cracked concrete, specimens with artificial cracks were manufactured using thin copper plates with a thickness of 0.2 mm or 0.3 mm. These copper plates were positioned inside the fresh concrete for a depth of maximum 20mm. The chloride penetration into the concrete was realised with the non-steady state migration test developed by Tang (1996). Numerical simulation, based on finite element method, was carried out, leading to a good agreement between the measured and the numerical predicted chloride penetration results.

Online publication: 2009-06-15
Publication type : full_text
Public price (Euros): 0.00

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