利用电化学腐蚀原理,对长期在氯离子环境下工作的7根不同碳纤维包裹方式的钢筋混凝土梁外加恒定电流,加速其腐蚀.对比每根梁在腐蚀过程中的物理力学性能及其变化,分析不同碳纤维包裹方式对钢筋混凝土梁耐久性产生的不同影响并对其机理进行研究.试验表明:碳纤维包裹对钢筋混凝土梁耐久性有较显著提高,其耐久性提高的程度与碳纤维对钢筋混凝土梁的包裹方式有关.%The principle of electrochemistry is adopted in this test. The current is switched on 7 RC beams strengthened with CFRP of different measures, and these beams have worked in corrosive environment for a long time. So the corrosion speed becomes fast. Comprehensive comparison of mechanical property and transformation rule among them has been made. The different effects of the enhancement in durability are analyzed and its reason is researched. The test results indicate that the durability of the beams strengthened with CFRP can be enhanced significantly especially in the beam strengthened with CFRP entirely.
展开▼
