Transport model for the nuclear decontamination of cementitious materials

A numerical study on chloride migration in cracked concrete using multi-component ionic transport models

“…In most of numerical models considering multi-species transport in concrete [27,[35][36][37][38][39][40][41], the electrostatic potential is often determined by using the assumption of electro-neutrality condition. This implies that the spatial electrostatic potential is purely caused by the externally applied electric field and the charge balance of species occurs everywhere in the solution domain.…”

“…Their study also showed that the chloride binding by the Above numerical studies considered a diffusion problem and employed the Fick's second law to govern the chloride penetration in cracked concrete. In view of the long duration of diffusion tests and the need of electrochemical rehabilitation, the action of externally applied electric field is prevalently involved in a bunch of numerical models of chloride transport in concrete [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41]. These models extended the ionic diffusion to a more complicated migration dominated process, which follows the applications of the rapid chloride migration (RCM) test [42][43][44] and the electrochemical chloride removal/extraction (ECR/ECE) treatment [45].…”

Ionic transfer in charged porous media. Periodic homogenization and parametric study on 2D microstructures

“…These works are based, either on phenomenological or semi-empirical approaches, either on approaches using volume averaging method, or alternatively on both approaches coupled [10,[13][14][15]30,39]. However, in these works, the homogenization tools used are often coupled with strong simplifying assumptions.…”

Aggregate Shape Effect on Multicomponent Ionic Electromigration in Concrete

“…In most of numerical models considering multispecies transport in concrete (Frizon et al, 2003;Jensen et al, 2014;Li & Page, 1998;Liu & Shi, 2012;Liu et al, 2014;Narsillo et al, 2007;Toumi et al, 2007;Truc et al, 2000;Wang et al, 2001;Šavija et al, 2014), the electrostatic potential is often determined by using the assumption of electroneutrality condition. This implies that the spatial electrostatic potential is purely caused by the externally applied electric field and the charge balance of species occurs everywhere in the solution domain.…”

“…In view of the long duration of diffusion tests and the need of electrochemical rehabilitation, the action of externally applied electric field is prevalently involved in a bunch of numerical models of chloride transport in concrete (Feng, Li, Kim, & Liu, 2016;Frizon, Lorente, Ollivier, & Thouvenot, 2003;Jensen, Johannesson, & Geiker, 2014;Johannesson, Yamada, Nilsson, & Hosokawa, 2007;Krabbenhoft & Krabbenhoft, 2008;Li, Easterbrook, Xia, & Jin, 2015;Li & Page, 1998;Liu, Li, Easterbrook, & Yang, 2012;Liu & Shi, 2012;Liu, Xia, Easterbrook, Yang, & Li, 2014;Narsillo, Li, Pivonka, & Smith, 2007;Samson & Marchand, 2007;Toumi, Francois, & Alvarado, 2007;Truc, Ollivier, & Nilsson, 2000;Wang, Li, & Page, 2001;Xia & Li, 2013;Šavija, Luković, & Schlangen, 2014). These models extended the ionic diffusion to a more complicated migration dominated process, which follows the applications of the rapid chloride permeability/migration (RCP/RCM) test (Whiting, 1981;AASHTO T 277, 1983;ASTM C 1202ASTM C , 1994Tang & Nilsson, 1993a;NT-Build 492, 1999;AASHTO TP 64-03, 2003) and the electrochemical chloride removal/extraction (ECR/ECE) treatment (Lankard, Slatter, Holden, & Niest, 1975).…”