美国混凝土协会201委员会以减小钢筋锈蚀为目的,对混凝土的组成材料作出了新的规定。限制混凝土中氯离子的含量,对于使用过程中外露的结构是特别重要的。201委员会对钢筋混凝土的组成材料中氯离子的最大含量提出了建议,建议包括所有产生氯离子的来源——拌制混凝土所用的 The American Concrete Association 201 Committee has made new regulations for the constituent materials of concrete for the purpose of reducing corrosion of steel bars. Limiting the chloride ion content in concrete is particularly important for exposed structures during use. The 201st Committee made recommendations on the maximum content of chloride ions in the constituent materials of reinforced concrete. It is recommended that all sources of chloride ions should be used—mixed concrete.