Fire Resistance of Concrete Structure- A Review

Abstract

Fire resistance is one of the key factor which aids toward the durability of a structure. Concrete is the most widely used construction material and is also an effective material for structural fire protection. Physical and thermal properties are used to measure the fire resistance of concrete. Three main reasons of concrete fire resistance are: non-combustible, non-toxic, low thermal conductivity (concrete retain slow rate of heat transfer). The lower value of concrete thermal conductivity behaves like a perfect shield to protect the material and adjacent space from fire damage. Fire resistance of concrete depend on a few different factors mainly: aggregate type, moisture content, density, thickness. Aggregate type suitable for fire resistance of concrete are Limestone, dolomite and lime rock. This paper reviews works done by various researches on the effect of aggregates towards the fire resistance of concrete.