Institute of Fundamental Technological Research
Polish Academy of Sciences


Y. Khmurovska

Recent publications
1.  Khmurovska Y., Štemberk P., Sikorin S., Němeček J., Jóźwiak-Niedźwiedzka D., Doleželová M., Kaladkevich Y., Pavalanski E., Fatseyeu V., Effects of gamma-ray irradiation on hardened cement mortar, International Journal of Concrete Structures and Materials, ISSN: 2234-1315, DOI: 10.1186/s40069-020-00452-7, Vol.15, pp.17-1-14, 2021

The effect of gamma-ray irradiation on cement mortar properties is investigated in this study in order to understand the mechanism behind the strength and stiffness reduction, which may be significant according to the available researches. 60Co irradiation facility with the generating dose rate of 0.1–10 Gy/s and the total activity of 4.4·10^15 Bq (120 kCi) was used to perform the irradiation, so that the total observed dose of the irradiated samples reached the values ranging from 12.0 to 15.0 MGy. An identical set of control samples was placed in the same laboratory conditions away from gamma radiation. The results of nanoindentation, X-ray diffraction analysis and mercury intrusion porosimetry of the irradiated and the control samples are shown and explained in detail in this study. The nanoindentation creep compliance and the nanoindentation elastic modulus of the irradiated and the control samples do not show any significant difference. The mineral composition obtained using the X-ray diffraction analysis of the irradiated and the control samples is also similar. The pore structure rearrangement and microcrack occurrence, which were evidenced by the mercury intrusion porosimetry and scanning electron microscopy, led to the porosity increase and may be attributed to the significant decrease of compressive strength.

cement mortar, drying, experiment, gamma-ray, nanoindentation, porosity, X-ray diffraction

Khmurovska Y. - other affiliation
Štemberk P. - other affiliation
Sikorin S. - National Academy of Sciences of Belarus (BY)
Němeček J. - other affiliation
Jóźwiak-Niedźwiedzka D. - IPPT PAN
Doleželová M. - other affiliation
Kaladkevich Y. - other affiliation
Pavalanski E. - other affiliation
Fatseyeu V. - other affiliation

Category A Plus


logo ippt            Pawińskiego 5B, 02-106 Warsaw
  +48 22 826 12 81 (central)
  +48 22 826 98 15

Find Us

© Institute of Fundamental Technological Research Polish Academy of Sciences 2024