Simulation of cyclic effects on coupled ionic and moisture transport in concrete

Author(s): S. Yoon, B. Hoda, F. P. Glasser, M. S. Imbabi
Paper category: Workshop
Book title: RILEM International workshop on performance-based specification and control of concrete durability
Editor(s): D. Bjegović, H. Beushausen, M. Serdar
ISBN: 978-2-35158-135-3
e-ISBN: 978-2-35158-136-0
Pages: 459 - 467
Total Pages: 9
Language: English

Abstract: 
Samson and Marchand [1] have applied the extended Nernst-Planck equation and Richard’s equation to describe the ionic and moisture transport in concrete. However, the Richard’s equation intrinsically neglects the effect of capillary pressure, which can be significant as moisture propagates through the concrete. Recently, Baroghel-Bouny et al. [2] developed a coupled model to incorporate capillary pressure. In the present study, the model has been extended and applied to understand cyclic ionic and moisture transport effects on a 2-dimensional concrete body. The coupled model essentially combines and solves the extended Darcy’s law and Nernst-Planck/Poisson equation with the mass balance equations and unlike the earlier models includes the effects of the gravity vector. The simulation results present a more realistic and convincing picture of ionic and moisture profiles in concrete under the cyclic environmental loading.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00