Mixing pea gravel with concrete is not only possible, it's actually beneficial for certain projects, as long as you do it correctly. Pea gravel consists of smooth, rounded stones that are typically ...

To make aerated concrete, add a foam-forming agent and stir in a significant amount of air. This serves to make the concrete ...

Concrete reabsorbs some of its carbon emissions over time. Alternative ingredients and 3D printing could help supercharge that by making the finished concrete more porous.

Concrete is one of the world’s most important materials. But making the cement that binds it generates about 8% of anthropogenic carbon-dioxide emissions. This is not just because of the heat involved ...

A version of this story appeared in Volume 101, Issue 26 Making cement, the main ingredient of concrete, produces about 8% of global carbon dioxide emissions. By giving concrete energy-storing powers ...