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目前,国家对混凝土及混凝土用砂中氯离子最大含量的有关标准并不统一。JGJ55—2011《普通混凝土配合比设计规程》中6.0.3规定:用于预应力钢筋混凝土的混凝土拌合物中水溶性氯离子最大含量不大于0.06%(水泥用量的质量百分比)。GB 50010—2010《混凝土结构设计规范》中3.5.3条规定:预应力构件混凝土中的最大氯离子含量为0.06%。而JGJ52—2006《普通混凝土用砂、石质量及检验方法标准》中3.1.10规定:对于钢筋混凝土用砂,其氯离子含量不得大于0.06%(以干砂的质量百分率计)、对于预应力混凝土用砂其氯离子含量不得大于0.02%。GB/T14684—2011《建设用砂》中6.3中规定Ⅰ、Ⅱ、Ⅲ类砂中氯离子含量应分别不大于
At present, the national standards for the maximum content of chloride ions in concrete and concrete sand are not uniform. JGJ55-2011 “Ordinary concrete mix design rules” in 6.0.3 states: for prestressed concrete concrete mixture of water-soluble chloride maximum content of not more than 0.06% (mass percentage of cement). GB 50010-2010 “Code for design of concrete structures” in the provisions of Article 3.5.3: prestressed concrete maximum chloride content of 0.06%. And JGJ52-2006 “ordinary concrete sand, stone quality and test methods standard” in 3.1.10 states: for reinforced concrete sand, the chloride ion content of not more than 0.06% (as dry sand mass percentage), for prestressed Concrete sand chloride content of not less than 0.02%. GB / T14684-2011 “construction sand” in 6.3 provisions of Ⅰ, Ⅱ, Ⅲ type of sand chloride content should not be greater than