Ultimate strength capacity of a square hollow section filled with fibrous foamed concrete

[摘要] Concrete-filled sections used as building columns have become popular due to their architectural and structural elements. In recent years, there has been a renewed call for the improvement of materials used as concrete to fill the composite columns. Among these materials, foamed concrete has received great attention due to its structural characteristics and its potential as a construction material used in hollow sections. However, its behaviors as infill material in a hollow section, such as its strength and failure mode, should be investigated. In this study, experimental research was conducted to compare the experimental and theoretical values of its ultimate strength capacity. Eight specimens of hollow steel sections with two different thicknesses were filled with fibrous foamed concrete and then subjected to compression load. The obtained results were compared with those obtained from a hollow section with the same thicknesses, but were filled with normal foamed concrete. Results show that the ultimate strength capacity of the experimental value is the same as that of the theoretical value based on Eurocode 4. The largest percentage values between theoretical and experimental results for thicknesses of 2 and 4 mm are 58% and 55%, respectively.

[发布机构] Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor; 86400, Malaysia^1;Jamilus Research Center, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor; 86400, Malaysia^2

[效力级别] 土木建筑工程

[关键词] Compression loads;Experimental research;Experimental values;Square hollow sections;Structural characteristics;Structural elements;Theoretical values;Ultimate strength capacity