Lightweight steel-concrete wall bearing structures under high-temperature exposure
Аннотация
Lightweight steel concrete structures (LSCS) are innovative building structures that can be used both as load-bearing and enclosing. They consist of profiled steel - usually galvanized and cold-bent - filled with a monolithic foam concrete with a 200kg/m3 density and fiber cement sheets sheathing. These structures can be used in industrial and civil buildings as internal and external bearing and enclosing wall structures and slabs. According to the LSCS production method, prefabricated panels (walls and slabs) and building site performed constructions are distinguished. The paper presents testing with the aim to determine the fire resistance limit of a floor panel fragment by bearing capacity (R), loss of integrity (E), and loss of heat insulating capability (I). Two samples of a wall panel fragment with overall dimensions of 3200×3200 mm each were provided for the fire resistance tests. The actual fire resistance limit of samples of the wall panel fragment is REI 60 with a uniformly distributed load of 20 kN/m