Fire Resistance Evaluation of Reinforced Concrete Columns

Experimental and theoretical studies were carried out to predict the fire resistance of reinforced concrete columns made with materials commonly used in China. For this purpose, the thermal properties at elevated temperatures were determined for the siliceous and carbonate aggregate concretes, of which the columns were made. Using these properties as input data in a mathematical model, calculations were made of the fire resistance of seven columns, which were constructed at the Tianjin Fire Research Institute and tested at the National Fire Laboratory of the Institute for Research in Construction, National Research Council of Canada.Des \ue9tudes exp\ue9rimentales et th\ue9oriques ont \ue9t\ue9 r\ue9alis\ue9es aux fins de la pr\ue9diction de la r\ue9sistance au feu de poteaux en b\ue9ton arm\ue9 faits de mat\ue9riaux couramment utilis\ue9s en Chine. \uc0 cette fin, on a d\ue9termin\ue9 les propri\ue9t\ue9s thermiques aux temp\ue9ratures \ue9lev\ue9es pour les b\ue9tons \ue0 granulats siliceux et carbonat\ue9s, mat\ue9riaux dont les poteaux \ue9taient faits. Ces propri\ue9t\ue9s ayant \ue9t\ue9 utilis\ue9es comme donn\ue9es d?entr\ue9e d?un mod\ue8le math\ue9matique, on a r\ue9alis\ue9 des calculs de la r\ue9sistance au feu de sept (7) poteaux, lesquels ont \ue9t\ue9 fabriqu\ue9s au Tianjin Fire Research Institute et test\ue9s au Laboratoire national de l?incendie de l?Institut de recherche en construction du CNRC.Peer reviewed: NoNRC publication: Ye