TY - JOUR
T1 - Experimental investigation of high strength reinforced concrete columns damaged by fire and retrofitted with CFRP jackets
AU - Xu, J.
AU - Tan, C.
AU - Aboutaha, R.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/12/13
Y1 - 2019/12/13
N2 - This paper presents the compressive behaviour of high strength circular reinforced concrete (RC) columns exposed to fire following the standard fire curve for 1 or 2 hours, air cooled, and then retrofitted with 2 layers of transverse carbon fibre reinforced polymer (CFRP) wraps. Total 5 circular RC columns φ300mm x 1000mm) were tested to investigate the effects of fire duration and the effectiveness of CFRP jackets. The investigated compressive behaviour of columns included load-displacement relationship, CFRP load-strain response and failure mode. Large temperature gradient was observed when columns were exposed to fire. For the unretrofitted columns, the test results showed that the ultimate capacity and stiffness of fire-damaged RC columns was decreased due to the deterioration of concrete at elevated temperatures. Longer fire duration leads to more sever damaged on columns. CFRP jackets could effectively restore the stiffness and improve the ultimate capacity of fire-damaged circular columns.
AB - This paper presents the compressive behaviour of high strength circular reinforced concrete (RC) columns exposed to fire following the standard fire curve for 1 or 2 hours, air cooled, and then retrofitted with 2 layers of transverse carbon fibre reinforced polymer (CFRP) wraps. Total 5 circular RC columns φ300mm x 1000mm) were tested to investigate the effects of fire duration and the effectiveness of CFRP jackets. The investigated compressive behaviour of columns included load-displacement relationship, CFRP load-strain response and failure mode. Large temperature gradient was observed when columns were exposed to fire. For the unretrofitted columns, the test results showed that the ultimate capacity and stiffness of fire-damaged RC columns was decreased due to the deterioration of concrete at elevated temperatures. Longer fire duration leads to more sever damaged on columns. CFRP jackets could effectively restore the stiffness and improve the ultimate capacity of fire-damaged circular columns.
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U2 - 10.1088/1755-1315/358/4/042009
DO - 10.1088/1755-1315/358/4/042009
M3 - Conference article
AN - SCOPUS:85077203977
VL - 358
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
SN - 1755-1307
IS - 4
M1 - 042009
T2 - 2019 5th International Conference on Advances in Energy, Environment and Chemical Engineering, AEECE 2019
Y2 - 16 August 2019 through 18 August 2019
ER -