Basalt Rebar doesn’t corrode like Steel Rebar! The use of traditional steel rebar has demonstrated that this “preferred” steel reinforcement can cause expensive maintenance, repair and replacement problems.
Reinforced concrete structures are facing serious degradation problems due to the corrosion of the steel rebar inside of the concrete structures. In the USA alone, the estimated cost to repair these problems is approaching 300-billion US dollars annually!
Reinforced concrete structures have to be able to support the load and its own weight. As such, the greater the total weight to be supported, the more rebar and concrete required.
The problems associated with steel rebar (corrosion, weight, etc.) are avoided with the use of fiberglass (FRP) in this case (BFRP) basalt fibers alternative, because BFRP materials are nonmetallic and noncorrosive. In addition, BFRP materials exhibit several superior properties (including higher tensile strength), making them suitable for use as structural reinforcement.
Basalt rebars can also be used WITH steel – no one says it has to be one or the other.
Personally, if my building is subject to seismic swaying, I want Basalt rebars as they want to return to straight. Steel when bent, stays bent, it does not want to return to straight like basalt. If the building ever got to the actual point of shear break loads, you are in way more trouble than any rebars can help. Look at videos from recent collapses in Greece and Haiti to see this point.