A Modified Analytical Model for Simulating Chloride Ingress into Concrete Structures Compared with the Experimental LIBS Based Profiles

T.D. Le1, a), P. Konecny b), M.B. Lierenfeld c), M. Hornakova b) and P. Lehner b)

a) Faculty of Civil Engineering, Saigon Technology University, 180 Cao Lo Str., Ward 4, Dist. 8, Ho Chi Minh City 73018, Vietnam;
b) Faculty of Civil Engineering, VSB-Technical University of Ostrava, 708 33 Ostrava-Poruba, Czech Republic
c) Valtest AG, Gewerbestrasse 10, CH-3931 Lalden, Switzerland

Received 25/01/2021; Accepted in revised form 11/01/2024

Abstract: This article presents an attempt to compute chloride profiles of concrete structures exposed to chloride ions scanned by the laser-induced breakdown spectroscopy (LIBS) method using a modified analytical model. Five concrete samples were taken from a parking garage in the Swiss Alps. Subsequently, 2D profile images from these drilled samples were analyzed and processed to obtain diffusion coefficients for the chloride ingress and arithmetic data under the form of 1D chloride profiles. The modified analytical model was utilized by adopting a Monte Carlo (MC) simulation technique into the analytical formula of Crank’s solution of the diffusion equation. Simulated results were quantitatively compared with those of LIBS measurements using the root mean square-error tool.
© European Society of Computational Methods in Sciences and Engineering
Keywords: analytical model, chloride profile, concrete structures, diffusion coefficient, LIBS, Monte Carlo simulation.
Mathematics SubjectClassification: AMS-MOS: 65-11 Research data for problems pertaining to numerical analysis
PACS: 64.60.De Statistical mechanics of model systems (Ising model, Potts model, field-theory models, Monte Carlo techniques, etc)

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