Abstract
Accurate prediction of temperature rise inside the concrete matrix is essential to estimate the fire performance of structures. Finite element (FE) analysis presented an accurate tool to predict temperature in the structure element. However, simple equations or charts are generally preferred by structural engineers. This paper introduced simple equations to predict the temperature distribution in beams made of normal weight concrete (NWC) and light weight concrete (LWC). The equations were derived by using regression analysis for FE temperature data attained by using Ansys software program for NWC and LWC beams exposed to elevated temperatures. The parameters of the study comprised concrete thermal properties, fire exposure time and beam dimensions. The predicted temperature rise obtained by the proposed equations was compared with temperature data from both FE analysis and experimental test results.
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