Search academic texts

Information × Registration Number 0224U033059, (0121U110091) , R & D reports Title Material research on the elaboration of geopolymer materials and expanding their functionality for advancing of the technology of radiative waste immobilization for nuclear power plants popup.stage_title Експериментальні дослідження та виготовлення іммобілізуючих матричних матеріалів методами термообробки під тиском порошкових компонентів Head Saienko Serhii Yu., Доктор технічних наук Registration Date 17-12-2024 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description1 Development, creation and research of the perspective protective materials of geopolymer class by using of domestic natural materials and industrial waste and evaluation of long-term behavior of these materials applied for isolation of the radioactive waste from nuclear power plants popup.description2 A set of works on the production of geopolymer materials for solidification of organic liquid radioactive waste, including the method of heat treatment under pressure, was carried out. It was shown that the use of an external pressure of 60 MPa and a temperature of 80 °C allowed to significantly increase the mechanical strength of hardened geopolymer samples from 32 to 42 MPa, which is the main indicator of the quality of protective matrices, as well as to obtain a highly dense structure. A pilot batch of samples of geopolymer matrices with the embedded spent ion-exchange resins was produced using heat treatment under pressure, and the maximum resin loading (20 wt.%) was determined without a significant deterioration in strength and corrosion resistance. Thus, additional heating and pressing allow to produce protective geopolymer matrices with increased physical and mechanical properties compared to those obtained by traditional casting technology.  Product Description popup.authors Svitlychnyi Yevhenii O. Kholomieiev Hennadii O. Shkuropatenko Volodymyr A. popup.nrat_date 2024-12-17 Close