Fear of ‘climate change’ may be meddling with cost & ingredients for cement next?! ‘Cement’s carbon problem may have a blunt fix, swap limestone for basalt’ – Seek to ‘cut CO2 from about 1,343 lb per ton of cement’ – ‘Limestone brings a built-in climate penalty’ as ‘cost testing’ needed for new process
By Admin
June 19, 2026
8:24 am
Cement’s carbon problem may have a blunt fix, swap limestone for basalt, because modeling suggests energy demand could drop by more than 40% and emissions by over 80%, cutting CO2 from about 1,343 lb per ton of cement to roughly 110 lb with certain rock types
By ECONEWS
Exerpt: Cement’s carbon problem may have a blunt fix, swap limestone for basalt, because modeling suggests energy demand could drop by more than 40% and emissions by over 80%, cutting CO2 from about 1,343 lb per ton of cement to roughly 110 lb with certain rock types
Cement is under our feet, inside our walls, and poured into the roads we drive on every day. Yet it rarely gets the same climate attention as cars, power plants, or the electric bill sitting on the kitchen counter.
A new study suggests that one of construction’s biggest climate problems may have a surprisingly direct fix. Instead of changing what builders use on job sites, researchers say the industry could change the rock used to make Portland cement, the common binder that helps turn sand and gravel into concrete.
The study found that calcium-rich silicate rocks such as basalt and gabbro could cut energy demand by more than 40% and reduce related carbon pollution by more than 80%.
Why cement matters
https://www.climatedepot.com/2026/06/19/fear-of-climate-change-may-be-meddling-with-ingredients-for-cement-next-cements-carbon-problem-may-have-a-blunt-fix-swap-limestone-for-basalt-seek-to-cut-co2-from-about-1343-l/
