Behaviour of Post Heated Reinforced Concrete Columns

National Colloquium on Wind and Earthquake Engineering

Mohd Zahid, M.Z.A.^1 ; Abu Bakar, B.H.^2 ; Nazri, F Muhamad^2

Faculty of Engineering Technology, Department of Civil Engineering Technology, Universiti Malaysia Perlis, Padang Besar, Perlis

02100, Malaysia^1

School of Civil Engineering, Universiti Sains Malaysia, Kampus Kejuruteraan, Nibong Tebal, Pulau Pinang

14300, Malaysia^2

关键词: Axial compression load;    Different geometry;    Elastic stiffness;    Environmental conditions;    Heating temperatures;    Post-heated columns;    RC column;    Reinforced concrete column;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/244/1/012006/pdf
DOI  :  10.1088/1755-1315/244/1/012006

来源: IOP

【 摘 要 】

Fire represents one of the most severe environmental conditions experienced by the reinforced concrete (RC) structures. The aim of this study is to examine the behaviour of post-heated RC columns. There were two different geometries of RC columns were cast, i.e.: square and circular. Eight RC columns were heated at 600°C for two hours and tested under axial compression load. The main variables investigated were column's geometry and heating temperature. The test results showed that the mechanical properties i.e.: load carrying capacity, elastic stiffness and ductility of RC columns significantly affected by heating temperature. Column's geometry highly influenced the loss of water of post heated RC columns, however, less significant on the mechanical properties of post heated columns.