Investigation of durability of geopolymer materials obtained using thermally modified clay rocks. / E. Shapakidze, M. Avaliani, M. Nadirashvili, V. Maisuradze, I. Gejadze, T. Petriashvili, E. Khuchua. – 2021–2022. – # 21/22. – pp. 129-136. – eng. World cement industry currently accounts for about 8% of the global carbon dioxide emissions from clinker production by firing the carbonate component of the raw mix. Geopolymer materials can be an alternative to ordinary Portland cement, as carbon dioxide emissions are reduced by about 80%. In addition, given that geopolymer concretes are generally stronger and more durable, they offer a longer service life, which reduces the need for raw materials in the future. Metakaolin, a product of heat treatment of kaolin clays at temperatures of 750 – 850°C, is usually used to obtain geopolymer materials, but limited world reserves of kaolin clays prevent their widespread use. Paper describes the production of geopolymer materials synthesized on the basis of thermally modified clay rocks and their study for durability. Studies have shown that geopolymer materials have good durability and higher resistance to aggressive solutions compared to ordinary Portland cement. Fig. 4, Tab. 3, Ref. 28.