On the influence of aggregate nature on concrete behaviour at high temperature

摘要

This paper presents some experimental results on the behaviour of concrete at high temperature. The main objective is to analyse the influence of the type of aggregates on several material properties, and particularly upon the thermal instability risk (spalling) of the concrete. Different levels of observations have been chosen: from the study of small elements for the assessment of the main concrete properties at high temperature to the study of slabs to analyse the fire behaviour of the concretes.