Effects of Gamma-Ray Irradiation on Hardened Cement Mortar
Abstract 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...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-03-01
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| Series: | International Journal of Concrete Structures and Materials |
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| Online Access: | https://doi.org/10.1186/s40069-020-00452-7 |
| _version_ | 1818643098357465088 |
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| author | Yuliia Khmurovska Petr Štemberk Svyatoslav Sikorin Jiří Němeček Daria Jóźwiak-Niedźwiedzka Magdaléna Doleželová Yuliya Kaladkevich Eryk Pavalanski Viktar Fatseyeu |
| author_facet | Yuliia Khmurovska Petr Štemberk Svyatoslav Sikorin Jiří Němeček Daria Jóźwiak-Niedźwiedzka Magdaléna Doleželová Yuliya Kaladkevich Eryk Pavalanski Viktar Fatseyeu |
| author_sort | Yuliia Khmurovska |
| collection | DOAJ |
| description | Abstract 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 4.4·1015 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. |
| first_indexed | 2024-12-16T23:53:33Z |
| format | Article |
| id | doaj.art-72fcef036c5b47ba8848719b08f8926d |
| institution | Directory Open Access Journal |
| issn | 1976-0485 2234-1315 |
| language | English |
| last_indexed | 2024-12-16T23:53:33Z |
| publishDate | 2021-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Concrete Structures and Materials |
| spelling | doaj.art-72fcef036c5b47ba8848719b08f8926d2022-12-21T22:11:15ZengSpringerOpenInternational Journal of Concrete Structures and Materials1976-04852234-13152021-03-0115111410.1186/s40069-020-00452-7Effects of Gamma-Ray Irradiation on Hardened Cement MortarYuliia Khmurovska0Petr Štemberk1Svyatoslav Sikorin2Jiří Němeček3Daria Jóźwiak-Niedźwiedzka4Magdaléna Doleželová5Yuliya Kaladkevich6Eryk Pavalanski7Viktar Fatseyeu8Department of Concrete and Masonry Structures, Faculty of Civil Engineering, Czech Technical University in PragueLaboratory of Experimental Physics and Nuclear Safety of Reactor Facilities, The Joint Institute for Power and Nuclear Research, Sosny of the National Academy of Sciences of BelarusLaboratory of Experimental Physics and Nuclear Safety of Reactor Facilities, The Joint Institute for Power and Nuclear Research, Sosny of the National Academy of Sciences of BelarusDepartment of Mechanics, Faculty of Civil Engineering, Czech Technical University in PragueDepartment of Experimental Mechanics, Institute of Fundamental Technological Research, Polish Academy of SciencesDepartment of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in PragueThe Joint Institute for Power and Nuclear Research, Sosny of the National Academy of Sciences of BelarusThe Joint Institute for Power and Nuclear Research, Sosny of the National Academy of Sciences of BelarusThe Joint Institute for Power and Nuclear Research, Sosny of the National Academy of Sciences of BelarusAbstract 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 4.4·1015 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.https://doi.org/10.1186/s40069-020-00452-7cement mortardryingexperimentgamma-raynanoindentationporosity |
| spellingShingle | Yuliia Khmurovska Petr Štemberk Svyatoslav Sikorin Jiří Němeček Daria Jóźwiak-Niedźwiedzka Magdaléna Doleželová Yuliya Kaladkevich Eryk Pavalanski Viktar Fatseyeu Effects of Gamma-Ray Irradiation on Hardened Cement Mortar International Journal of Concrete Structures and Materials cement mortar drying experiment gamma-ray nanoindentation porosity |
| title | Effects of Gamma-Ray Irradiation on Hardened Cement Mortar |
| title_full | Effects of Gamma-Ray Irradiation on Hardened Cement Mortar |
| title_fullStr | Effects of Gamma-Ray Irradiation on Hardened Cement Mortar |
| title_full_unstemmed | Effects of Gamma-Ray Irradiation on Hardened Cement Mortar |
| title_short | Effects of Gamma-Ray Irradiation on Hardened Cement Mortar |
| title_sort | effects of gamma ray irradiation on hardened cement mortar |
| topic | cement mortar drying experiment gamma-ray nanoindentation porosity |
| url | https://doi.org/10.1186/s40069-020-00452-7 |
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