Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Volodymyr Gulik"'
Autor:
Iveta Nováková, Ashfaque Ahmed Jhatial, Sofija Kekez, Eirik Gjerløw, Volodymyr Gulik, Karunamoorthy Rengasamy Kannathasan, Mindaugas Vaišnoras, Andrejs Krasnikovs
Publikováno v:
Buildings, Vol 14, Iss 7, p 1952 (2024)
The interfacial transition zone (ITZ) is the weakest phase in concrete, characterised by higher porosity and being prone to microcrack formation. Additionally, the ITZ is created when dispersed fibre reinforcement is present. Although fibres improve
Externí odkaz:
https://doaj.org/article/a098dabd78d64397998a983a93e3eec5
Publikováno v:
Journal of Natural Fibers, Vol 19, Iss 8, Pp 2953-2962 (2022)
The results of the investigations of the surface of basalt fibers from rocks are given in the article. The effect of melt homogeneity on the state of the fiber surface is shown. Acid treatment significantly changes the fiber surface structure. Basalt
Externí odkaz:
https://doaj.org/article/23541c62e52f43a3820f640c7099c4e4
Autor:
Rynno Lohmus, Heikko Kallakas, Eero Tuhkanen, Volodymyr Gulik, Madis Kiisk, Kristjan Saal, Targo Kalamees
Publikováno v:
Materials, Vol 14, Iss 16, p 4701 (2021)
The reinforcement of plywood is demonstrated by laminating pretensioned basalt fibers between veneer sheets, to fabricate so-called prestressed plywood. Belt type basalt fibers bearing a specific adhesion promoting silane sizing were aligned between
Externí odkaz:
https://doaj.org/article/b53e9319d95c438fae1b9ab7c44ac449
Publikováno v:
Journal of Natural Fibers. 19:2953-2962
The results of the investigations of the surface of basalt fibers from rocks are given in the article. The effect of melt homogeneity on the state of the fiber surface is shown. Acid treatment sign...
Publikováno v:
Nuclear Technology and Radiation Protection, Vol 35, Iss 4, Pp 294-303 (2020)
In this paper, the feasibility of high-level radioactive waste transmutation in accelerator driven system sub-critical reactor assembly, has been studied for two zone's model and with three different core configurations. The inner zone has a fast neu
Autor:
Targo Kalamees, Rynno Lohmus, Kristjan Saal, Eero Tuhkanen, Volodymyr Gulik, Madis Kiisk, Heikko Kallakas
Publikováno v:
Materials, Vol 14, Iss 4701, p 4701 (2021)
Materials
Volume 14
Issue 16
Materials
Volume 14
Issue 16
The reinforcement of plywood is demonstrated by laminating pretensioned basalt fibers between veneer sheets, to fabricate so-called prestressed plywood. Belt type basalt fibers bearing a specific adhesion promoting silane sizing were aligned between
Publikováno v:
Nuclear Technology and Radiation Protection, Vol 34, Iss 1, Pp 1-12 (2019)
The subcritical reactor driven by external neutron source could apply as useful instrument for modern nuclear energy applications requiring high-level irradiation of different materials by the high-energy and high-intense neutron flux (e. g., nuclear
Autor:
Alex Biland, Rünno Lõhmus, Madis Kiisk, Maido Merisalu, Sergei Kovaljov, Vitali Pastsuk, Volodymyr Gulik
Publikováno v:
SN Applied Sciences. 2
Due to a growing interest in basalt fibers as a reinforcing material for concrete, it becomes necessary to study behavior of such fibers and their interaction with the concrete matrix. Basalt fibers have prospective mechanical and processability prop
Autor:
Amer A. Al Qaaod, Volodymyr Gulik
Publikováno v:
Nuclear Science and Techniques. 31
This study aims to produce 229Th using an innovative nuclear reactor concept, i.e., accelerator-driven system (ADS) reactor. Herein, we investigated the feasibility of producing 229Th from neutron transmutation of 226Ra to expand the availability of
Publikováno v:
Nuclear and Radiation Safety. :42-47
The paper presents a new composite material for radiation shielding properties. This material is based on super-heavy concrete reinforced with basalt fiber, which could be used in biological protection systems for neutron radiation sources. The simul