5.2Initial State
The report of the initial state lets the user verify the EXTERNAL and INTERNAL conditions of the system.
Initial state of system:
" ION " "EXTERNAL" "INTERNAL"
" H:" 0.00000 0.00000
" Ca:" 0.00000 0.00035
" Na:" 2.40000 0.05000
" K:" 0.00000 0.10000
" OH:" 0.00000 0.15070
" Cl:" 0.40000 0.00000
" SO4:" 1.00000 0.00000
" pH:" 7.00000 13.17810
These results indicate that the pH of the environment is 7, while the pH or the pore solution is initially 13. To change the pH of the environment the user can simply change the concentration of EXTERNAL anions or cations.
5.3Depth vs. Time
As 4SIGHT is calculating ion transport it regularly prints the current status of the degradation. The sulfate and chloride penetration depths as a function of time are given in the columns labelled SO4 and Cl, respectively. L is the remaining thickness of the slab, K is the hydraulic conductivity, D is the diffusivity, Flux is the flux of pore solution out the bottom of the slab, and pH is the pH of the flux.
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