摘要
钢筋锈蚀是影响混凝土结构安全和寿命的主要因素。水工建筑物中钢筋锈蚀的原因是混凝土保护层碳化、产生裂缝、侵入氯离子以及氧和水的作用。检测钢筋锈蚀的方法有三类,即常规方法、电化学方法和物理方法。对这些方法的可行性和存在问题作了详细讨论,并展望了在水利工程现场检测应用的前景。
Rust and corrosion on reinforcing bar in concrete structure takes decisive effect on life and safety of the structure.Main causes for the rust and corrosion are as: cabonification of protective layer on the concrete, emergence of crack, intrusion of chioric ion, action of oxide and water. Several methods to detect the rust and corrosion, i. e., commonly adopted methods, electrochemical methods and physical methods, are analyzed one by one; their feasibility and problem in practice are discussed also.Application ofnon-destruc tive detection to worksite of hydraulic structure is prospected.
基金
国家自然科学基金
关键词
水工建筑物
钢筋混凝土
腐蚀
Hydraulic structure
Reinforsed concrete structure
Corrosion evalution
