发生硼酸泄漏核电厂的混凝土结构耐久性能研究

RESEARCH ON THE CORROSION EFFECT ON THE DURABILITY OF CONCRETE STRUCTURE OF A NUCLEAR POWER PLANT BY BORIC ACID

以发生硼酸渗漏核电厂的钢筋混凝土结构为研究对象,通过对现场取得样品进行微观分析和宏观力学试验来研究硼酸溶液对混凝土结构的腐蚀机理和对其力学性能的影响。由现场取芯强度试验结果可知,发生腐蚀墙体区域取得芯样的抗压强度值低于未腐蚀区域的芯样试验强度,这表明硼酸溶液会影响混凝土材料的耐久性能。

The paper focused on the reinforced concrete structure corroded by boric acid at a nuclear power plant in China. The boric acid corrosion mechanism and its effects on the concrete mechanical properties were studied by micro analysis and mechanical test of the samples. The results of the coring strength test showed that the compressive strength of the core samples in the corrosion area were lower than those in the non-corrosion area,which indicated that the boric acid could affect the endurance performance of concrete.