Performance of reinforced concrete columns with steel-belted tires as transverse reinforcement

TL;DRAbstract

The majority of column failures observed during recent earthquakes were attributed to poor column behaviour caused by lack of inelastic deformability. The deformability of reinforced concrete columns can be improved through the confinement of potential plastic hinge regions by properly designed transverse reinforcement. The conventional reinforcement used for confinement consists of closely spaced perimeter hoops, overlapping hoops, cross-ties and circular spirals. One possible alternative for column confinement is to use steel-belted tires. Scrap automotive tires may provide an environmentally friendly alternative to conventional transverse reinforcement in circular concrete columns, especially for bridge and parking structures. Steel-belted radial tires contain sufficiently high percentage of high-grade embedded steel that can be effective in confining column concrete. Tires can be assembled on top of each other, clamped by longitudinal reinforcement inserted through their sidewalls,

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