Structural Behavior of Jacketed Fire-Damaged Reinforced Concrete Members: A Review

摘要

The production of concrete as a superior building material led to a consequent civilian renaissance in construction. Unfortunately despite the enormous advantages of Reinforced Concrete (RC) structures, they deteriorate and loose part of their strength when exposed to fire. The mechanical properties of concrete and reinforcing steel as well as the interfacial behavior between them pass through several significant changes during the heating and cooling stages. Therefore, a detailed assessment strategy should be carried out to evaluate the overall performance of a fire-damaged structure. The main objective of this paper is to summarize the experimental and analytical research concerned with the behavior of retrofitted fire-damaged RC elements. The paper presents information about the residual strength of fire-damaged RC elements and the expected improvements in their capacities when retrofitted using RC jackets. The information gathered in this paper provides a strong basis to identify future research needs for assessing the capacity and retrofitting of fire-damaged RC structures.