Experimental investigation on temperature distribution of foamed concrete filled steel tube column under standard fire

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Kado, B.^1,2 ; Mohammad, S.^1 ; Lee, Y.H.^1 ; Shek, P.N.^3 ; Kadir, M.A.A.^1

Faculty of Civil Engineering, Universiti Teknologi Malaysia, Johor, Johor Bahru

81310, Malaysia^1

Department of Civil Engineering, Faculty of Engineering, Bayero University Kano, Nigeria^2

Construction Research Centre (CRC), Universiti Teknologi Malaysia, Johor Bahru, Johor, 81310, Malaysia^3

关键词: Concrete-filled columns;    Critical temperatures;    Experimental investigations;    Foamed concrete;    Hollow steel;    Normal weight concrete;    Outer diameters;    Standard fire;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012136/pdf
DOI  :  10.1088/1755-1315/140/1/012136

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Standard fire test was carried out on 3 hollow steel tube and 6 foamed concrete filled steel tube columns. Temperature distribution on the columns was investigated. 1500 kg/m3and 1800 kg/m3foamed concrete density at 15%, 20% and 25% load level are the parameters considered. The columns investigated were 2400 mm long, 139.7 mm outer diameter and 6 mm steel tube thickness. The result shows that foamed concrete filled steel tube columns has the highest fire resistance of 43 minutes at 15% load level and low critical temperature of 671 °C at 25% load level using 1500 kg/m3foamed concrete density. Fire resistance of foamed concrete filled column increases with lower foamed concrete strength. Foamed concrete can be used to provide more fire resistance to hollow steel column or to replace normal weight concrete in concrete filled columns. Since filling hollow steel with foamed concrete produce column with high fire resistance than unfilled hollow steel column. Therefore normal weight concrete can be substituted with foamed concrete in concrete filled column, it will reduces the self-weight of the structure because of its light weight at the same time providing the desired fire resistance.