Researchers have made concrete 30% stronger by replacing a percentage of sand with spent coffee grounds, an organic waste produced in huge amounts that usually ends up in landfill.

But because the biochar makes concrete so much stronger, it may make it possible to shrink the amount of cement in the mix by 10%, which could offset the extra cost of making the biochar.

“Scrap carpet fibers can be used to increase concrete’s strength by 40% in tension and prevent early cracking, by reducing shrinkage substantially,” said Chamila Gunasekara, the lead researcher.

Impact of plastic waste fiber and treated construction demolition waste on the durability and sustainability of concrete. Scientific Reports , 14 (1). DOI: 10.1038/s41598-024-78107-w, https://www ...

Study: Concrete with a High Content of End-of-Life Tire Materials for Flexural Strengthening of Reinforced Concrete Structures.Image Credit: Bonita R. Cheshier/Shutterstock.com. Replacing Aggregates ...

Researchers have created a type of concrete that uses discarded shells to trap water. It's now combating floods and food waste in urban gardens and cycling paths.

Researchers have developed a type of concrete that uses discarded shells. It’s now combating floods and food waste in urban gardens and along cycling paths. This time of year, bushels of rhubarb ...

In line with the zero-waste philosophy, pixel is a project aimed at reducing waste in the production of facade elements made of glass fiber-reinforced concrete. Projects Images Products & BIM ...

He describes the shell concrete, which he started developing in 2018, as “a conduit for both industries to actually think about the waste that they produce, the products they produce, and how ...