For this project, Holcim supplied concrete made with low-carbon pozzolanic cement and half a million tons of excavation materials sourced onsite from the same project. This combination saved the infrastructure at least 30% CO2 emissions while significantly reducing the amount of virgin aggregates needed.
Once completed, the M4 (“blue”) line alone will be able to transport over 85 million people, avoid more than 60 million car journeys, and reduce CO2 emissions by up to 75,000 tons each year, according to WeBuild, the construction company.
- At least 30% CO2 emissions saved
- Half a million tons of excavation material reused in concrete production
- 180,000 car journeys per day avoided