A multidisciplinary approach to reriving parameters for modeling service life of reinforced concrete

Title: A multidisciplinary approach to reriving parameters for modeling service life of reinforced concrete
Author(s): D.A. Koleva, K. van Breugel, J.M.C. Mol, J.H.W. de Wit
Paper category : conference
Book title: 2nd International Symposium on Service Life Design for Infrastructures
Editor(s): K. van Breugel, Guang Ye, Yong Yuan
Print-ISBN: 978-2-35158-096-7
e-ISBN: 978-2-35158-097-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 139 - 147
Total Pages: 9
Nb references: 22
Language: English

Abstract: Various models for assessment and prediction of mechanical properties or materials behaviour of reinforced concrete, subjected to chloride induced corrosion, are present and available. These models provide promising results. However, most of them are based on theoretical considerations and simplified assumptions (e.g. certain type of corrosion products, say magnetite, deposit uniformly on the steel surface). This modelling strategy ignores the complex character of the corrosion products and the effect of their transformations on the bulk matrix microstructure. Furthermore, the existing models do not consider a thorough investigation of the reinforced concrete system as a global (integrating electrochemistry and concrete material science) i.e. the importance of correlating electrochemical and microstructural parameters is not considered. This paper briefly presents the application of experimentally derived parameters as an input in otherwise reported modelling approach for estimation of time to concrete cover cracking. Consideration is hereby given to the properties of the system "reinforced concrete" on macro and micro-level after corrosion and cathodic protection, taking into account electrochemical response of the embedded steel, surface layers properties and bulk matrix characteristics.

Online publication: 2011-04-20
Publication type : full_text
Public price (Euros): 0.00