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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 102
PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by:
Paper 215

Prediction of Carbonation and Chloride Ingress in Cracked Concrete Structures

V. Smilauer1, L. Jendele2 and J. Cervenka2

1Czech Technical University in Prague in Prague, Faculty of Civil Engineering, Czech Republic
2Cervenka Consulting Ltd., Prague, Czech Republic

Full Bibliographic Reference for this paper
V. Smilauer, L. Jendele, J. Cervenka, "Prediction of Carbonation and Chloride Ingress in Cracked Concrete Structures", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 215, 2013. doi:10.4203/ccp.102.215
Keywords: carbonation, chloride ingress, durability, crack, transport, induction period.

Summary
Carbonation and chloride ingress are the most relevant damaging mechanisms for steel corrosion in reinforced concrete structures. Massive utilization of supplementary cementitious materials in cement binders implies recalibration of existing models for these phenomena. The carbonation model formulated by Papadakis and the model for chloride ingress from Kwon are extended for crack effects, which accelerates both damaging mechanisms. Both models were reformulated in an incremental form, allowing a gradual crack growth. It was found that the crack width 0.3 mm decreases the induction time approximately five times when compared to uncracked concrete. Validation on in situ samples shows good predictions for chloride profiles.

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