Work

Effect of Pressure and Temperature on Properties of Hot-pressed Geopolymer for Immobilization of Radioactively Contaminated Wood Ash

Year: 2026

Type: article

Abstract: The geopolymer based on an alkali-activated mixture of fly ash, blast furnace slag and metakaolin was produced and tested as a matrix for immobilizing the wood ash, obtained by pyrolysis of inactive pine, simulating radioactively contaminated wood from the Chernobyl zone. Ukrainian raw materials, hot pressing and casting were used to produce samples. The rheological properties of pastes, mechanical characteristics and structures of hardened samples were analyzed. Optimized hot pressing parameters: T = 80 °C and P = 60 MPa facilitate to form dense geopolymers containing 10…40 % wood ash with increased compared to casted samples properties, which meet the European Waste Acceptance Criteria.

Source: Voprosy atomnoj nauki i tehniki. Seriâ âderno-fizičeskie issledovaniâ

DOI: 10.46813/2026-164-154

Authors: Y.O. Svitlychnyi, S.Yu. Sayenko, B.G. Shabalin, V.А. Shkuropatenko, H.O. Kholomieiev, O.V. Pylypenko

Institutions: Kharkiv Institute of Physics and Technology, The Institute of Environmental Geochemistry of National Academy of Sciences of Ukraine

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: bronze

OpenAlex ID: W7204557789

FWCI:

Cites: 23

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Related to: 10