COP27. Global ABC event “LC3: a revolutionary low CO2 building material”

Concrete is key to build tomorrow green cities and the needed infrastructure in the Global South. The development of limestone calcined clay cement (LC3) represents a saving of around 40% in CO2 emissions compared with the traditional ordinary Portland cement based mainly on clinker. LC3 uses a coupled substitution of limestone together with calcined clay to produce cement with excellent properties even at high levels of clinker substitution. This cement also differs from “niche green” building materials due to the fact that suitable clay is abundant worldwide, especially in the Global South where the biggest demand for buildings will be in the coming decades.

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