Abstract This paper presents the long-term durability performance of semi-lightweight concrete containing various levels of supplementary cementing materials (SCM) and steel fibers when exposed to a harsh marine environment for up to 25 years. Concrete specimens (305 × 305 × 915 mm [1 × 1 × 3 ft.]) were casting using W/CM in the range of 0.26 to 0.60. The depth of chloride penetration was greater than 90 mm (3.5 in.) for all the control specimens (without fly ash and silica fume). However, mixes containing both silica fume and fly ash (with W/CM ranging from 0.40 to 0.60) performed very well resulting in chloride penetration of approximately 40 mm (1.6 in.) during the same period. The results from the chloride permeability testing also indicate significant increases in the resistance to chloride-ion penetration for ternary concrete containing fly ash and silica fume.

中文翻译：

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严酷海洋环境下使用 25 年的硅粉和粉煤灰轻质混凝土砌块的性能

摘要 本文介绍了含有不同水平的辅助胶结材料 (SCM) 和钢纤维的半轻质混凝土在暴露于恶劣的海洋环境中长达 25 年的长期耐久性能。混凝土试件（305 × 305 × 915 毫米 [1 × 1 × 3 英尺]）使用 0.26 至 0.60 范围内的 W/CM 浇铸。对于所有对照样品（不含飞灰和硅粉），氯化物渗透深度大于 90 毫米（3.5 英寸）。然而，同时含有硅粉和飞灰（W/CM 范围为 0.40 到 0.60）的混合物表现非常好，导致在同一时期氯化物渗透约 40 毫米（1.6 英寸）。