Concrete is the most consumable building material in the world. Marine aggregates are the natural sand and gravels available in the sea or dredged from seabed. Contents of chloride, sulphate and shell in the marine aggregates can influence the properties of concrete and corresponding performance of the concrete structures. However, the limitations of chloride, sulphate and shell contents are set as different threshold values in different countries and/or regions. Some of them are inconsistent or puzzling for user. This paper presents a comprehensive review on the limit values of these contents used in different countries and provides a better understanding on the rationale behind these limit values thorough analysis on the limits of chloride, sulphate and shell content in marine fine aggregates for concrete. Except discussion, in this paper, an experimental study was carried out to evaluate the corrosion of reinforcing steel in concrete mixed with DMS as well. The experimental results of corrosion potential and corrosion current density showed that the rebar in DMS concrete should be safe from corrosion when the chloride content in DMS is less than 0.18% or the total chloride content in concrete is less than 0.34%. This study can contribute to fill the knowledge gap on concrete applications on dredged marine sand (DMS) and relative research.

混凝土是世界上最易消耗的建筑材料。海洋集料是在海上或从海底挖出的天然沙子和砾石。海洋集料中的氯化物，硫酸盐和壳的含量会影响混凝土的性能以及混凝土结构的相应性能。但是，在不同的国家和/或地区，将氯化物，硫酸盐和壳含量的限制设置为不同的阈值。它们中的一些对于用户而言是不一致的或令人困惑的。本文对不同国家使用的这些含量的限值进行了全面的综述，并通过对混凝土海洋细集料中氯，硫酸盐和壳含量的限值进行分析，从而更好地理解了这些限值背后的原理。除了讨论，在本文中，还进行了一项实验研究，以评估掺有DMS的混凝土中钢筋的腐蚀情况。腐蚀电位和腐蚀电流密度的实验结果表明，当DMS中的氯化物含量小于0.18％或混凝土中的总氯含量小于0.34％时，DMS混凝土中的钢筋应安全防腐蚀。这项研究可以弥补在疏marine海沙（DMS）上的混凝土应用和相关研究方面的知识空白。18％或混凝土中的总氯含量小于0.34％。这项研究可以弥补在疏marine海沙（DMS）上的混凝土应用和相关研究方面的知识空白。18％或混凝土中的总氯含量小于0.34％。这项研究可以弥补在疏marine海沙（DMS）上的混凝土应用和相关研究方面的知识空白。