Maria Gallucci and Jeff St. John of Canary Media report on six innovative startups that are kicking CO2 out of cement and concrete.
- Terra CO2 has found a way to create supplementary cement material–a common cement alternative–with a variety of silicate rocks.
- Terra CO2 estimates that every metric ton of cement replaced by these materials will result in 70 percent lower CO2 emissions compared to pure Portland cement.
- Brimstone, an Oakland-based startup, is replacing the limestone in cement with calcium-bearing silicate rocks that do not contain and carbon atoms, leading to carbon-free production process.
“CarbonBuilt spun out of UCLA’s engineering school in 2019. In May, the company began commercial production of its sustainable concrete at a partner facility in Alabama, where an on-site biomass furnace captures and supplies CO2. The company says it now plans to produce its Portland-cement-free blocks at ’commercial volume’ in Alabama starting in 2024.”
Read the full article here.
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