The corrosion degradation behavior of concrete materials plays a crucial role in the change of its mechanical properties under multi-ion interaction in the marine environment. In this study, the variation in the macrophysical and mechanical properties of concrete with corrosion time is investigated, and the source of micro-corrosion products under different salt solutions in seawater are analyzed. Regardless of the continuous hydration effect of concrete, the damage effects of various corrosive ions (Cl⁻, SO ²⁻₄ , and Mg²⁺, etc.) on the tensile and compressive strength of concrete are discussed based on measurement in different salt solutions. The sensitivity analysis method for concrete strength is used to quantitatively analyze the sensitivity of concrete strength to the effects of each ion in a multi-salt solution without considering the influence of continued hydration. The quantitative results indicate that the addition of Cl⁻ can weaken the corrosion effect of SO ²⁻₄ by about 20%, while the addition of Mg²⁺ or Mg²⁺ and Cl⁻ can strengthen it by 10%–20% during a 600-d corrosion process.

海洋环境中多离子相互作用下混凝土材料的腐蚀降解行为对其力学性能的变化起着至关重要的作用。本研究研究了混凝土宏观物理力学性能随腐蚀时间的变化，分析了海水中不同盐溶液下微腐蚀产物的来源。无论混凝土的持续水化作用如何，各种腐蚀离子（Cl ^-、SO ^2- ₄和 Mg ²⁺ 等）对混凝土的抗拉和抗压强度进行了讨论，基于在不同盐溶液中的测量。混凝土强度敏感性分析法用于在不考虑持续水化影响的情况下，定量分析混凝土强度对多盐溶液中各离子影响的敏感性。定量结果表明，添加Cl ^{-可使SO 2-} ₄的腐蚀作用减弱约20%，而Mg ²⁺或Mg ²⁺和Cl ^-的添加可增强10%~20 %的SO 2- 4 腐蚀作用。 600-d 腐蚀过程。