Can Rebar Be Bent Twice?

RE: Can Rebar be bent twice? ofthesea, Per ACI 318-05 section 7.3, bars can be bent once and only "cold bent".

Can rebar be Rebent?

Pa rtially embedded re i n f o rcing bars can be success- fully rebent (or bent for the first time, which should be less critical) if they are first pre-heated to 1100°-1200° F and then bent as gently and in as gradual an arc as pos- s i b l e.

Does bending rebar weaken it?

Article: “How Harmful is Cold Bending/Straightening of Reinforcing Bars?” ... The New Zealanders found that cold bending and straightening of rebar embedded in concrete does not weaken the bars if they are not bent through an angle greater than 90 degrees and the procedure is used only once.