Engineers are finding lessons from practices of ancient Roman builders could provide paths to manufacturing concrete in ways that reduce or eliminate the environmentally threatening greenhouse gasses produced in the making of much of today’s concrete. Narayanan Neithalath, a professor in the the School of Sustainable Engineering and the Built Environment, part of the Fulton Schools,   notes that emissions of such gasses are required to be reduced by more than 20 percent in the near future in accord with the Paris Agreement, an international treaty  that seeks to spur efforts to halt detrimental climate change. The Roman concrete formulations could prove more sustainable in the long run because they may not need to be replaced or repaired often, Narayanan notes.

See also: Neither steel nor Portland—Roman concrete can last for centuries and could save the planet from climate collapse, LAGRADA
Farewell to modern cement – Roman concrete can last for centuries and could save the planet from climate collapse, Union Rayo