Experimental Study of Mechanical Behavior of Ceramsite Concrete Filled Steel Tubular Columns Subjected to Fire Load
Mechanical behavior of a set of ordinary concrete filled steel tubular short column (note as NCSSC) and ceramsite concrete filled steel tubular short column (note as CCSSC) subjected to fire load are experimentally investigated. Effect of the parameters, such as the maximum value of fire temperatures, fire duration on the strength and ductility of the two types of specimens were especially discussed. The test results show that both of the specimens of NCSSC and CCSSC have higher post-fire bearing capacity and better ductility, there was no descent segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the maximum response temperature of specimens and fire duration time has great effect on the axial bearing capacity of concrete-filled steel tubular short columns subjected to fire. The maximum longitudinal strain of specimens of CCSSC is less than the corresponding value of the longitudinal strain of NCSSC.
Chaohe Chen, Yong Huang and Guangfan Li
X. T. Wang et al., "Experimental Study of Mechanical Behavior of Ceramsite Concrete Filled Steel Tubular Columns Subjected to Fire Load", Advanced Materials Research, Vols. 243-249, pp. 1228-1232, 2011