Article name Evaluation of Radiation Resistance of Barrier Clay Materials
Authors Mishankin A.. ,
Chubreev D.O. candidate of physical and mathematical sciences, head of the Laboratory of Engineering Safety Barriers,
Pavlyuk A.O. candidate of physical and mathematical sciences, Director of the Research Center for the Decommissioning of Nuclear and Radiation Hazardous Facilities,
Yazikov E.. ,
Bibliographic description Mishankin A. Yu., Chubreev D. O., Pavlyuk A. O., Yazikov E. G. Evaluation of Radiation Resistance of Barrier Clay Materials // Transbaikal State University Journal. 2023. Vol. 29, no. 3. P. 26–34. DOI: 10.2109/2227- 9245-2023-29-3-26-34.
Category Earth and Environmental Sciences
DOI 504
DOI 10.2109/2227-9245-2023-29-3-26-34
Article type Original article
Annotation The article presents data on the experience of studying barrier clay materials on the basis of the laboratory of engineering safety barriers of the Research Center for the Decommissioning of Nuclear and Radiation Hazardous Facilities and a review on the topic of the effect of radiation exposure on various characteristics of barrier clay materials. The object of the study is a barrier clay material based on bentonite clay mined at the 10th Khutor deposit (Ust-Abakansky district of the Republic of Khakassia). The bentonites of this deposit are characterized by volcanic-sedimentary genesis, their main component is montmorillonite, which is of pyroclastic origin. The subjects of the study are such indicators of the quality of barrier clay materials when they are used in engineering safety barriers, such as the mineral and micromineral composition before and after irradiation. The purpose of the study is to assess the effect of radiation exposure on the mineral and micromineral composition of barrier clay materials. In the course of the work, studies were carried out using the methods of powder X-ray diffractometry and scanning electron microscopy with energy-dispersive spectrometry. The objectives of the scientific study included the assessment of the radiation resistance of the barrier clay material at an absorbed dose of gamma radiation of 45–50 MGy. In the course of the work, literature data on the effect of radiation exposure on the properties and characteristics of clay materials were analyzed. Based on the research results, data on the mineral and micromineral composition of barrier clay materials, as well as on the morphology of mineral particles before and after irradiation, were obtained and compared. It is concluded that there is no mineralogical evolution of the substance of the barrier clay material as a result of radiation exposure.
Key words barrier clay material, engineering safety barrier, radiation exposure, radiation resistance, characteris-tics of barrier clay materials, mineral composition, clay minerals, mineral particle morphology, X-ray diffractometry, scanning electron microscopy
Article information
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