The CO2 emissions released from concrete could be cut globally if there was an incentive to develop the materials needed.
That’s according to Professor Ellis Gartner, who spoke at a conference at Imperial College London yesterday.
The lecture looked at how the carbon footprint of concrete could be reduced.
Mr Gartner, visiting Professor in the Department of Civil and Environmental Engineering, told ELN new materials which bind the cement must be developed, which release less CO2 emissions than the most commonly used Portland cement – the cheapest on the market.
He added: “What we’re looking to do in the long term is develop completely new cement chemistries.
“I believe this is where we will go in the future – provided there’s an incentive for people to develop new lower CO2 binders.
“We’ll be developing new types of binders which will be able to replace Portland cement very slowly, not necessarily on all applications but with a significant saving in CO2 emissions.”