Fuzzy assessment of surface temperature of RC members exposed to fire

In order to assess the fire damaged concrete structures, the inspection methods of the surface temperature of reinforced concrete (RC) members exposed to fire in the buildings are put forward. On the basis of these methods, the fuzzy mathematics is introduced to judge the surface temperature of the building members by establishing suitable relative membership degree formula of target and fuzzy synthetic evaluation model. The effectiveness of the proposed approach is shown by carrying out a reliability assessment of a fire-damaged building. The results indicated that through the application of fuzzy logic algorithm, a more user friendly and more explicit model than other fire damage assessment methods could be produced within successfully low error margins.