Mix one part Type 1 Portland cement and one part fine sand by volume. Add water until the mixture is the consistency of thick paint, then brush it on the damp concrete. Before that dries ...

Last year, the world produced 3.6 billion tons of cement—the mineral mixture that solidifies into concrete when added ... building stone from the Isle of Portland, Aspdin called his invention ...

The concrete industry accounts for roughly 8 percent of global carbon dioxide emissions, but a new study says that it could one day be a source of negative emissions. By taking a page out of nature’s ...