Researchers from RMIT University have developed an eco-friendly zero-cement concrete, which all but eliminates corrosion.
Concrete corrosion and fatbergs plague sewage systems around the world, leading to costly and disruptive maintenance.
But now RMIT engineers have developed concrete that can withstand the corrosive acidic environment found in sewage pipes, while greatly reducing residual lime that leaches out, contributing to fatbergs.
Fatbergs are gross globs of congealed mass clogging sewers with fat, grease, oil and non-biodegradable junk like wet wipes and nappies, some growing to be 200 metres long and weighing tonnes.
These build-ups of fat, oil and grease in sewers and pipelines, as well as general corrosion over time, costs billions in repairs and replacement pipes.
The RMIT researchers, led by Dr Rajeev Roychand, created a concrete that eliminates free lime — a chemical compound that promotes corrosion and fatbergs.