A Comparative Study of Fire Resistance of Concrete Incorporating Ultrafine Slag

Abstract

The inherent fire resistant personality of concrete is advantageous over many other constructional materials; but safety against fire must also be incorporated in the very design of concrete structures. In addition, ensuing stresses owing to the expansion of the structural components because of exposure to fully grown fires and resulting strains should also be resisted. For a safe and sound structure, fire contemplations must be elemental in the conceptualization along with the design-related junctures. This ascent of temperature forces the free water of concrete to convert itself from liquid stage into gaseous stage. Such alterations change the transmission rate of heat from the core concrete section (interior) heading for the periphery (exterior) and vice versa. This amplification in temperature creates a potency drop in context to the elas ticity modulus of both concrete and steel. However, the cadence of descent in strength depends upon the stroke of temperature amplification of fire along with the natural insulation traits of concrete. The modification in concrete characteristics because of the elevation in temperature depends upon the sort of aggregates incorporated. Hence, we can say that study of the residual properties of concrete are imperative while assessing the load carrying competence of concrete along with inspecting the supplementary use of the damaged structures in an event of a fire