| 英文摘要 |
Reinforced concrete is widely used in civil engineering nowadays, and its durability is one of the research focuses. Among all the durability issues, the corrosion of the reinforcement is drawing more and more attentions since it is associated with the mechanical and seismic performance of reinforced concrete structure. However, the modern measurement techniques have limitations and the results show great uncertainties. In view of these issues, this study explores the factors influencing the reinforcement corrosion measurements in reduced or full-scaled concrete specimens using the linear polarizations and the galvanostatic pulses. Results show that the galvanostatic pulse provides more accurate results than the linear polarization. The calculated weight loss through the measurements is proportional to the weight loss, but their linear relationships are influenced by the water-cement ratio of the cover, thickness of the cover, the ratio of the coarse to fine aggregates of the cover, and the arrangement of the reinforcement. To obtain reliable results, specimens must be in saturated surface dry and have no coatings. The locations of the stirrups and the main bars must be identified in advance and then the corrosion measurements must be conducted at those locations separately. |
