| 摘要 |
A steel bar with ribs to form concrete armours, which allows the concrete to be maintained on the elastic zone of its strength with a stress less than 50% of the damage stress, where such bar has a nominal diameter Dn; a distance between consecutive rib centers "L"; a rib height "h" and a rib area "A", where such area "A" is greater than 0.12×P×L and less than 0.25×P×L. The height "h" is greater than 0.12×L and less than 0.25×L.
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