Page:4SIGHT manual- a computer program for modelling degradation of underground low level waste concrete vaults (IA 4sightmanualcomp5612snyd).pdf/37

 These failure data indicate that the calculation terminated because it exceeded the time limit. The termination occurred after 100044 days (586 years), at which point the sulfate and chloride penetration were 0.13 and 0.60 meters, respectively.

5.5Final System State

Upon termination of the calculation, the final state of the system for the slab is printed. The is measured from the top of the slab. is the hydraulic pressure, is the Darcy velocity,  is the inverse of the formation factor,  is the porosity,  is the estimated compressive strength using ACl 211.

Note that the external quantities are duplicated to a depth of 0.1 meters. As the sulfate penetrates the concrete, the concrete fails and the external boundary conditions move into the concrete. Also note that the pressure is zero from 0.75 to 1.00 meters. Since the concrete was cracked, the permeability of the cracked portion of the concrete overwhelmed