LC3 is highlighted in the United Nations Global Sustainable Development Report 2019. It is the mainly technology mentioned for sustainability in the cement industry:
“A joint research team from EPFL Switzerland, the Indian Institutes of Technology Delhi and Madras, Development Alternatives/TARA and the Cuban institute Centro de Investigación y Desarrollo de Medicamentos has developed limestone calcined clay cement (LC3).
This new cement reduces the clinker content by 50 per cent. Clays are produced at a lower temperature and do not release embodied CO2. Limestone is used as is without burning. As a result, CO2 emissions are 30 per cent lower that for conventional cement.
Using limestone calcined clay cement instead of conventional cement can save up to 400 million tons of CO2 per year by 2050. That amount equals France’s entire yearly emissions or one per cent of global emissions.
Limestone calcined clay cement shows very similar performance characteristics to traditional cement and even outperforms it in some regards such as resistance to chloride and alkali which can cause “concrete cancer”. Because it uses less energy in production, limestone calcined clay cement is also approximately 25 per cent cheaper, and governments can accelerate production using tax incentives.”
For the full report, follow the link: https://sustainabledevelopment.un.org/globalsdreport/2019