The cement needed to make concrete – the most widely used man-made material – is a major source of global emissions. Researchers are working on a green replacement that could transform the sector.
Reinforced concrete is everywhere. But unlike plain concrete, which can last for centuries, reinforced concrete can succumb to rust, deteriorating in decades, writes Guy Keulemans.
UNSW researchers have turned ash waste from coal-fired power stations into an environmental solution which could slash emissions in the carbon-hungry construction sector by at least 20 per cent.
