Title:
Repair of Fire-Damaged Reinforced Concrete Columns
Author(s):
Chien-Hung Lin, Shun-Tyan Chen, and Chen-An Yang
Publication:
Structural Journal
Volume:
92
Issue:
4
Appears on pages(s):
406-411
Keywords:
columns (supports); fires; reinforced concrete; repairs; stiffness; strength; Structural Research
DOI:
10.14359/992
Date:
7/1/1995
Abstract:
Both analytical and experimental methods were employed to investigate the behavior of reinforced concrete columns repaired after fire. Eleven columns were first exposed to various durations of fire and then repaired based on results of thermal analyses using the finite element method. The unheated and repaired columns were subjected to eccentric axial loads to determine their stiffness and ultimate strengths. The results show that most repaired columns could develop their original strength and stiffness or even higher than those of unheated columns. Also, the analytical results coincide with the experimental data.