How Are Refineries Used in Steel Fabrication? Rebar refers to rebar, a concrete mixture that serves as a firm core for tying together several beams in a constructions project. In short, rebar is a strong metallic form that is used basically as the skeleton around beams and columns in http://outsourcerebardetailing01110.kylieblog.com/8500428/the-rebar-detailing-company-diaries