An Experimental Study of the Damage Modes of Fireproof Coatings Under Complex Loads

Abstract

Fire proof coatings used as passive fire protection in steel structures may sustain damage when subjected to seismic, blast or impact action. Complex states of stress exist within the coating as well as at the interface between the coating and the surface of the steel member. This paper reports an experimental study on damage modes of different fireproof coatings when steel columns under complex loads. Behavior of cementitious coating and intumescent coating are compared. Different failure modes of these two coatings are observed.