Research on fire spalling risk assessment of concrete structures

Based on an analysis of domestic and overseas former research results,and considering the factors influencing explosive spalling,a hierarchical system for assessing the fire spalling risk of concrete structures was established.Five levels of spalling risk were defined in this system by the total risk value of the concrete structure.Good agreement between the results of spalling risk prediction and the fire test shows the efficacy of the proposed system in assessing the fire spalling risk of concrete structures,which could provide a reference for the fire resistance design of concrete structures.