Cement

Concrete is the most widely used building material in the world, but it comes at a huge environmental cost. Engineers in Japan have developed a new technique to make concrete by recycling waste concrete and combining it with captured carbon dioxide.

Scientists have come up with an alternative cement recipe that makes use of unused mining materials to cut its carbon emissions by up to two thirds, while meeting the performance requirements of traditional Portland cement.

As the world's strongest artificial material, graphene may have a lot to offer the world of construction, and scientists have offered another example of this by using it to create a novel form of cement that is highly resistant to water and cracks.

Scientists at Stanford University have demonstrated a cement recipe that swaps troublesome limestone for zero-carbon volcanic rock, which might just help reinforce the finished product through embedded microscopic fibers.

Recent research projects have demonstrated how the wonder material graphene could play a role in stronger, more eco-friendly concrete, and now we're seeing the first real-world deployment of the technology in the foundations of a new gym in the UK.

A six-year competition to capture CO2 emissions from operational power plants and convert them into useful products has drawn to a close, and produced dual winners with technologies that promise to reduce the environmental footprint of concrete.

The cement used to make concrete carries quite a carbon footprint. Now, scientists at the University of Tokyo have created a cement-free alternative that directly bonds sand particles together using a reaction between alcohol and a catalyst.

Pulp mills generate significant amounts of waste, and we're seeing scientists get quite creative with how it might be put to use. The latest example sees it used as a filler material for cement, which proved to be stronger and more resilient.

Unfortunately concrete production is a major source of carbon dioxide in the atmosphere. Now engineers at Purdue University have developed a new cement recipe that can absorb CO2 twice as fast as usual, hopefully turning it into a useful carbon sink.

Researchers have found that the concrete walls in a decommissioned power plant in Japan have not only kept their strength over the decades but have actually gotten stronger with use, thanks to a rare mineral also found in ancient Roman concrete.

Engineers at Penn State University have developed a new type of flexible cement they say can be used to contain methane leaks, by being fed into the the very fine gaps around deteriorating gas wells that traditional cements are unable to fill.

Scientists in Australia have developed a new cement-free solution they say is better equipped to handle the corrosive nature of sewerage systems, while also helping avoid the buildup of troublesome and costly fatbergs.