The sensitivity to corrosion-free life in concrete structures exposed to chlorides was evaluated with respect to different binder in mix. As binders, ordinary Portland cement (OPC), ground granulated blast furnace slag (GGBS), pulverised fuel ash (PFA) and silica fume (SF) were selected. Prior to the sensitivity analysis, experimental works were performed to achieve control values for the apparent diffusion coefficient, surface chloride concentration and critical chloride threshold level for corrosion. The cover depth was set 100 mm in the sensitivity analysis. The margin for the variation in parametric values was set −50 to +100% to the control. As a result, OPC had the highest sensitivity for the chloride threshold level and surface chloride concentration to corrosion-free life, whilst these sensitivities in other mixes were lower in a similar range between them. Either a double of the chloride threshold level or half of the surface chloride in OPC mix could produce the corrosion-free life in an equated range for 65% GGBS mix at an equivalent condition. As for cover depth and apparent diffusion coefficient, their sensitivity to corrosion-free life was independent to binder type, which nevertheless affects the corrosiveness.

针对混合的不同粘合剂，评估了暴露于氯化物的混凝土结构对无腐蚀寿命的敏感性。作为粘合剂，选择了普通波特兰水泥（OPC），磨碎的高炉矿渣（GGBS），粉煤灰（PFA）和硅粉（SF）。在进行敏感性分析之前，进行了实验工作以达到表观扩散系数，表面氯化物浓度和腐蚀的临界氯化物阈值水平的控制值。在灵敏度分析中，将覆盖深度设置为100 mm。参数值变化的余量设置为对照的-50至+ 100％。结果，对于无腐蚀寿命，OPC对氯化物阈值水平和表面氯化物浓度的敏感性最高，而其他混合物中的这些敏感性在它们之间的相似范围内较低。对于OPC混合物中的氯化物阈值水平的两倍或表面氯化物的一半，在等效条件下，对于65％GGBS混合物，在相同的范围内可以产生无腐蚀寿命。至于覆盖层的深度和表观扩散系数，它们对无腐蚀寿命的敏感性与粘结剂类型无关，但仍会影响腐蚀性能。