Page:4SIGHT manual- a computer program for modelling degradation of underground low level waste concrete vaults (IA 4sightmanualcomp5612snyd).pdf/33

 5.2Initial State

The report of the initial state lets the user verify the and  conditions of the system.

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 anions or cations.

5.3Depth vs. Time

As 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 and, respectively. is the remaining thickness of the slab, is the hydraulic conductivity,  is the diffusivity,  is the flux of pore solution out the bottom of the slab, and  is the pH of the flux.