Chemistry
The Chemistry of Geopolymer Formation from Aluminosilicate Sources
Quick fact
Geopolymer concrete can be made from fly ash and slag using a strongly alkaline solution, and it can achieve 80% lower CO2 emissions compared to Portland cement—all without the high-temperature kilns used in cement production.
Why this is interesting
Ever wondered how ancient Roman concrete lasted thousands of years, or how we can build with less CO2? The answer might lie in a chemical reaction that turns common clay and ash into a rock-like material.