Fire behaviour of high strength self-consolidating concrete filled steel tubular stub columns

Testing of self-consolidating concrete-filled double skin tubular stub columns exposed to fire

“…Explosive spalling of SCC at elevated temperature was observed similar to that for high strength concrete [15]. It was demonstrated by Lu et al [16] that such spalling can be prevented by steel tubes in CFST columns. It is expected that the same phenomenon would happen in SCC-filled CFDST columns because of the confinement provided by both outer and inner steel tubes.…”

“…There is very limited knowledge about the fire performance of SCC-filled CFDST columns [14], although work has been done on SCC at elevated temperatures [15] and SCC-filled steel tubes under fire testing [16]. Explosive spalling of SCC at elevated temperature was observed similar to that for high strength concrete [15].…”

Thermal analysis and adiabatic calorimetry for early-age concrete members

“…This indicates that h c is an infinite value, which is the case when the ''TIE'' constraint is used in ABAQUS. Espinos et al [22] suggested that h c could be taken as a constant value of 200 W m -2 K -1 , while a constant value of 100 W m -2 K -1 is suggested by Lu et al [23]. In this study, a test setup was developed to simulate the condition of the contact between concrete and steel formwork (Fig.…”

Study of recycled concrete–filled steel tubular columns on the compressive capacity and fire resistance

“…The studies proposed several methods to compute fire resistance, which has now been adopted in practical design. [10][11][12][13][14] Recycled concrete can not only overcome the shortage in natural aggregates but also reduce construction waste after demolition or redevelopment. However, according to Xiao,15 recycled concrete has higher variable coefficient d and lower reliability coefficient b than 3.7, its application will be very poor if there is no treatment or strengthening measures.…”