Fire Tests on Reinforced Concrete Columns, Speciments no. 2-7: Phase II

Results of a fire tests on six reinforced concrete column are given. These tests are a part of a series of twelve tests carried out in the second phase of a joint study on the fire performance of concrete columns by the National Research Council Canada and Construction Technology Laboratories, a division of the Portland Cement Association. Two of the columns were made of normal weight, and two of high strength, siliceous aggregate concrete. Two columns were made of expanded shalel lightweight aggregate concrete. These columns measured 305 x 305 mm (12 x 12 in.) in cross-section and 3,810 mm (12 ft 6 in.) long. The purpose of the tests was to study the effects of restraint, concrete strength, and aggregate density on the fire resistance of the columns.Les r\ue9sultats d'essais de tenue au feu men\ue9s sur un poteau fait de b\ue9ton arm\ue9 sont fournis. Ils font partie d'une s\ue9rie de 12 essais r\ue9alis\ue9s dans la deuxi\ue8me phase d'une \ue9tude conjointe du Conseil national de recherches du Canada et des Construction Technology Laboratories, division de la Portland Cement Association, portant sur la r\ue9sistance au feu des poteaux de b\ue9ton. La fabrication de deux (2) des poteaux \ue9tudi\ue9s comportait un b\ue9ton d'une masse normale, et celle de deux (2) autres poteaux, un b\ue9ton \ue0 granulat siliceux l\ue9ger, soit du schiste expans\ue9. Leur section faisait 305 mm x 305 mm (12 po x 12 po), et leur longueur, 3810 mm (12 pi 6 po). On a mis \ue0 l'essai les poteaux dans le but d'\ue9tudier le r\uf4le que jouent la contrainte, la r\ue9sistance du b\ue9ton et la masse volumique des granulats dans la tenue au feu de ce type d'\ue9l\ue9ment.Peer reviewed: NoNRC publication: Ye