Study of residual mechanical properties of concretes after exposure to high temperatures

Abstract

The current version of the European standard for concrete structures gives tabulated data for the evolution of the mechanical properties of normal strength concrete. However, the standard acknowledges the lack of sufficient data for the case of high strength concrete with limestone aggregate. This paper presents the experimental results obtained on two batches of normal and high strength concrete subjected to high temperatures. Those results gave a good correlation with previous studies and equations are provided to describe the evolution of some mechanical properties of both normal and high strength concretes at elevated temperatures.