This area of research looks into how we can recycle waste materials to use as concrete that offers protection against corrosion for reinforced steel rebars.
Here is an article pertaining to the Geopolymer Concretes
Corrosion Behavior of Steel-Reinforced Green Concrete Containing Recycled Coarse Aggregate Additions in Sulfate Media Novel green concrete (GC) admixtures containing 50% and 100% recycled coarse aggregate (RCA) were manufactured according to the ACI 211.1 standard. The GC samples were reinforced with AISI 1080 carbon steel and AISI 304 stainless steel. Concrete samples were exposed to 3.5 wt.% Na2SO4 and control (DI-water) solutions. click the link to read more https://doi.org/10.3390/ma13194345