ACI的318委员会在其建筑规范中提出的关于新浇混凝土中氯离子含量允许限度自1983年以来即被确定,但它们与当前的防腐蚀技术显得不相适应。本文追踪叙述对氯离子要求的变化情况,并根据最近的一些研究提出了新的限度建议。目前迫切需要进行研究来确定腐蚀的开始同“有效或阈限氯化物”的相互关系。此“有效或阈限氯化物”是按 The permissible limits of chloride ion content in newly-concrete concrete proposed by ACI’s 318 Committee in its building codes have been determined since 1983, but they do not appear to be compatible with current anti-corrosion technologies. This article traces the changes in chloride ion requirements and proposes new limits based on recent research. There is an urgent need for studies to determine the relationship between the onset of corrosion and the “effective or threshold chloride”. This “effective or threshold chloride” is pressed