Table 3 Ratio of the chloride concentration in a circular RC cross-section and the chloride concentration of the plane RC element \( C/C_{slab} \) estimated at depth \( \rho_{1} = 6\;{\text{cm}} \) from the external surface.
\( C/C_{slab} \) | t = 1 year | t = 5 years | t = 10 years | t = 20 years | t = 50 years |
|---|---|---|---|---|---|
R = 20 cm | 1,196 | 1,198 | 1,200 | 1,204 | 1,216 |
R = 30 cm | 1,118 | 1,119 | 1,120 | 1,121 | 1,124 |
R = 50 cm | 1,066 | 1,066 | 1,067 | 1,067 | 1,068 |
R = 100 cm | 1,031 | 1,031 | 1,032 | 1,032 | 1,032 |
R = 150 cm | 1,021 | 1,021 | 1,021 | 1,021 | 1,021 |