Study of Corrosion Resistance of Geopolymers Obtained on The Basisof Local Raw Materials

Abstract

During the production of ordinary Portland cement (OPC), as a result of the decarbonization of limestone, a huge amount of greenhousegases, mainly CO2, are emitted into the atmosphere, which makes up about 8% of all world emissions. Consequently, any reduction inclinker use will have a serious impact on global warming. To achieve this goal, new technologies are being developed for producingclinker-free binders, one of which is geopolymers, which are considered an alternative to Portland cement.For the widespread introduction of geopolymers into construction, it is necessary, along with other properties, to study their durability,as well as their behavior in aggressive environments, i.e., corrosion resistance.The article is devoted to the study of the corrosion resistance of geopolymer materials obtained from local raw materials.It was found that the indicators of corrosion resistance of geopolymer materials (changes in mass and strength) correspond to changes intheir phase compositions after immersion in various aggressive solutions. In all cases, geopolymer materials showed higher resistanceto aggressive solutions compared to OPC.