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硫酸钠外加剂以及含有硫酸钠的复合外加剂,在我国的钢筋混凝土及预应力钢筋混凝土的结构物和制品上已经有了较广泛的应用。硫酸钠或其它硫酸盐中的SO_4是危害钢筋的腐蚀因素,这里作者想通过有关的资料,说明硫酸钠(及其它硫酸盐)在一定条件下可能腐蚀钢筋。混凝土中钢筋的腐蚀通常是以电化学腐蚀的方式进行的,这是金属在电解液中的腐蚀,这种腐蚀是常见的、大量的。水泥水化
Sodium sulphate admixtures and composite admixtures containing sodium sulphate have been widely used in China’s reinforced concrete and prestressed reinforced concrete structures and products. SO 4 in sodium sulphate or other sulphate is a corrosive factor which affects the reinforcement. The authors would like to use relevant information to show that sodium sulphate (and other sulphates) may corrode the bar under certain conditions. The corrosion of steel bars in concrete is usually carried out by means of electrochemical corrosion. This is the corrosion of metals in the electrolyte. This corrosion is common and numerous. Cement hydration