Earth911 Podcast: Eco Materials Technology’s Grant Quasha on Cutting Cement’s Carbon Footprint

What is the most used material in the world? Concrete, the basis for building most of the modern world, was invented during the Roman Empire and remains the most used material worldwide. In 2021, cement accounted for 1.6 billion tons of carbon dioxide emissions globally, about 4.3 % of all greenhouse gas generated that year. Meet Grant Quasha, CEO of Eco Material Technology, a New York-based maker of low-carbon cement and materials for making concrete. Eco Material reengineered the Roman method of making pozzolanic cement using processed fly ash generated by industrial processes. The company uses a low-temperature process to remove carbon when making PozzoSlag®. This material can replace a significant portion of the portland cement required to make durable concrete used in buildings and bridges. The resulting concrete carries an embodied carbon footprint 95% lower than traditional…