Page:4SIGHT manual- a computer program for modelling degradation of underground low level waste concrete vaults (IA 4sightmanualcomp5612snyd).pdf/35

"Day"   "L"     "K  "   "D    " "SO4"   "Cl"   "Flux"   "pH"
"   "   "m"     "m/s"   "m^2/s" "m  "   "m "   "ml/dy/m2"

0        1.000 1.3e-12 5.0e-12  0.000  0.000  0.027   13.2
10036   0.988 1.3e-12 5.0e-12  0.012  0.101  0.027   13.2
15055   0.988 1.3e-12 5.0e-12  0.018  0.129  0.027   13.2
20023   0.976 1.3e-12 5.0e-12  0.025  0.150  0.028   13.2
25031   0.969 1.3e-12 5.0e-12  0.031  0.173  0.028   13.2
30018   0.963 1.3e-12 5.0e-12  0.037  0.192  0.028   13.2
35011   0.957 1.3e-12 5.0e-12  0.043  0.211  0.028   13.2
40048   0.951 1.3e-12 5.0e-12  0.049  0.229  0.029   13.2
45104   0.945 1.3e-12 5.0e-12  0.055  0.246  0.029   13.2
50017   0.939 1.3e-12 5.0e-12  0.061  0.263  0.029   13.2
55045   0.933 1.3e-12 5.0e-12  0.067  0.280  0.029   13.2
60015   0.927 1.3e-12 5.0e-12  0.074  0.295  0.030   13.2
65003   0.920 1.3e-12 5.0e-12  0.080  0.311  0.030   13.2
70002   0.914 1.3e-12 5.0e-12  0.086  0.327  0.030   13.2
75013   0.908 1.3e-12 5.0e-12  0.092  0.342  0.031   13.2
80069   0.902 1.4e-12 5.0e-12  0.098  0.357  0.031   13.2
85037   0.896 1.4e-12 5.0e-12  0.104  0.372  0.031   13.2
90050   0.890 1.4e-12 5.0e-12  0.104  0.372  0.031   13.2
95069   0.884 1.4e-12 5.0e-12  0.116  0.401  0.031   13.2
100017   0.878 1.4e-12 5.0e-12  0.122  0.416  0.032   13.2

As per the linear model for sulfate attack, the sulfate front increases linearly with time. The chloride depth has a t^1/2 because of the low Peclet number (the ratio of Darcy to ‘diffusive’ flow [2]). At sufficiently high Peclet number (greater permeability or hydraulic head) the chloride depth approaches a linear relationship to time.

5.4Failure Data

After reporting the time dependent behavior, 4SIGHT reports the reason for termination and the status of the sulfate and chloride penetration:

Exceeded TIME limit.

"T"   17.283
"Day"   100017
"SO4 (m)"   0.122
"Cl (m)"   0.416

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