| Summary: | ABSTRACT
Earthquake can damage the columns. Inadequate spirally reinfoicement to confine the concrete core at the circular column can cause shear failure. The former research has shown that the column which repaired with spirally reinforcement cart increase shear strength. In this research, the original column was repaired with variety diameter and spacing of spirally reinforcement and also with steel jacketting as shear reinforcement, to know the effect on the increase of shear capacity and ductility.
In this research 5 (five) original columns with 250 mm diameter and 950 mm high, with 6016 longitudinal reinforcement and 04,6-200 spirally reinforcement were tested. These columns were loaded with constant axial load of 0,18 fc' Ag (±22,50 ton) and increasing cyclic lateral load until the shear failure. Four of the five original columns were repaired with concrete jacketting with addition of 8016 longitudinal reinforcement and variety spirally reinforcement of 0 5.4 - 28
|
|---|