Figure 7.

Effect on Cl⁻ transport of varying (a) cement type; (b) aggregate type; (c) w/c ratio; (d) air content, a_c; (e) aggregate-to-cement (a/c) ratio; (f) curing duration, t_cu; (g) RH during curing, RH_cu; (h) temperature during curing, T_cu; (i) exposure duration, t_exp; (j) RH during exposure, RH_exp; (k) temperature during exposure, T_exp; (l) Cl⁻ diffusivity in capillary water at 298 K, D_cw; (m) critical RH, RH_c; (n) activation energy for cement hydration, ΔU_hyd; (o) activation energy for Cl⁻ diffusion, Δ${\mathrm{U}}_{{\mathrm{Cl}}_{Diff}}$; (p) activation energy for RH diffusion, Δ${\mathrm{U}}_{{\mathrm{RH}}_{Diff}}$; and (q) exposure zone with different surface Cl⁻ concentration.