Additives can reduce the amount of cement needed to make concrete, but do not solve the problem completely. Cement-makers are also looking at capturing the carbon their factories emit and ...

According to Finke, calcium silicate rocks are about 200 times more abundant than limestone, which is traditionally used to make cement. Limestone contains calcium, the binding agent in cement.

“Cement, concrete, paint, and plasters are customarily composed of or derived from ... Young Investigator’s Award in Nanoscience and Nanomedicine for recent groundbreaking discoveries that have ...

Extraction of the minerals and other materials used to make concrete is also environmentally unfriendly. For example, around 50 billion tonnes of sand and gravel 1, and more than 5 billion tonnes ...

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 ...

That’s both because of the energy used to make cement—a process that involves heating up crushed rocks to as much as 2,800 degrees Fahrenheit—and because limestone, the main material ...

One of those strategies is to create a concrete that “self-heals,” and in a new study, scientists used synthetic lichen to ...