a) Perform the calculations for the first two time steps by hand (i.e. t = 7.884 * 10^6 sec, t = 1.5768 * 10^7 sec)

Question

anonymous · Answer

Seems like a long question, but not that bad.
Chloride ions, arising from marine exposure or the use of de-icing salts, are a recognized threat to the durability of reinforced concrete. If chloride penetrates the concrete cover in a sufficient concentration the potential for corrosion of steel reinforcing is greatly enhanced. The diffusion of chloride ions into saturated concrete can be simulated using Fick’s Second Law of Diffusion:
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