环氧树脂对混凝土中钢筋抗腐蚀性行为的电化学研究

用4×4阵列丝束电极模拟研究了混凝土中钢筋的腐蚀，将钢筋混凝土做不同的涂层处理：空白、铁丝表面涂抹树脂、混凝土表面涂抹树脂．通过测量铁丝的自腐蚀电位，研究不同涂层方式对混凝土防腐方面的影响．实验结果表明：只在混凝土表面涂抹树脂是最好的保护方式，它可以使钢筋的腐蚀电位一直处于钝化范围内．从而保证了钝化膜的完整性．这一结果对防止沿海地区和冰雪融化剂的氯离子对混凝土的破坏作用有意义，同时可应用于有杂散电流作用的混凝土结构物的防腐蚀．

Electrochemistry Study on Epoxy Resin to Anti-Corrosion Performance of Reinforced Bar in the Concrete

The corrosion behavior of reinforced bar in concrete was studied by simulating the 4×4 array wire-beam electrode in this paper. These reinforced concretes have been coated respectively in different ways： blank, iron wire with coating resin in surface, concrete with coating resin in surface. By measuring open-circuit potential of iron wire, the impact of different ways of coating were studied on the corrosion of concrete. The result showed that it is the best protection way to coat resin on the surface of concrete, which keeps the open-circuit potential within the passivation range all the time, so as to ensure the integrity of the passivation membrane.