Evaluation of Physico-Chemical Characteristics of Cement Superplasticizer Based on Polymelamine Sulphonate

Autor: Asta Judžentienė, Agnė Zdaniauskienė, Ilja Ignatjev, Rūta Druteikienė

Publikováno v: Materials, Vol 17, Iss 9, p 1940 (2024)

Cementitious materials are used to construct an engineered barrier in repositories for radioactive waste. The cement matrix may contain a variety of organic compounds, some of which are polymeric admixtures used as plasticizers. Superplasticizers (SP

Externí odkaz: https://doaj.org/article/d00993123cd6424cbf14c839198ac8a3

137Cs and 239,240Pu activity concentrations distribution in waterlogged and non-boggy soils of Lithuania

Autor: Laima Kazakevičiūtė-Jakučiūnienė, Nikolaj Tarasiuk, Evaldas Maceika, Rūta Druteikienė, Marina Konstantinova, Zita Žukauskaitė, Rasa Gvozdaitė, Šarūnas Buivydas

Publikováno v: Lithuanian Journal of Physics. 62

Vertical distributions of 239,240Pu and 137Cs activity concentrations in the waterlogged and non-boggy soil cores sampled in the vicinity of Vilnius City and in the Varėna District were analyzed. The radionuclides appeared in the soils mainly as a r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a45b0c2732b050b0ccfa009685d1c7d
https://doi.org/10.3952/physics.v62i1.4697

Impact of soil organic matter on Pu migration in five Lithuanian surface soils

Autor: Remigijus Juškėnas, R. Gvozdaitė, Rūta Druteikienė, Evaldas Maceika, Vidas Pakštas, Nikolaj Tarasiuk, Benedikta Lukšienė, Laima Kazakevičiūtė-Jakučiūnienė, Zita Žukauskaitė

Publikováno v: Journal of environmental radioactivity. 237

Pu distribution coefficient Kd variation was experimentally determined and examined in natural soil samples considering the type of soil, particle size, pH, the concentration of macroelements and organic matter content. This research was carried out

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f99477e95dc76474c8fdc4124b95a56
https://pubmed.ncbi.nlm.nih.gov/34284309

Uncertainty of determination of 158 Tb in the RBMK nuclear reactor waste

Autor: Vidmantas Remeikis, Vytenis Barkauskas, Rūta Druteikienė, Elena Lagzdina, R. Plukienė, Laurynas Juodis, A. Gudelis, Grigorijus Duškesas, Darius Germanas, Artūras Plukis

Publikováno v: Applied Radiation and Isotopes. 134:190-193

The activity of 158Tb was measured in waste samples from the Ignalina NPP Unit I RBMK-1500 reactor using gamma-ray spectrometry. The origin of 158Tb and the other observed gamma-ray emitters has been studied by using SCALE 6.1 modeling and comparing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e30ea4fe015380ffd6bfd17dbdc0e5b5
https://doi.org/10.1016/j.apradiso.2017.08.005

Distribution and source of 129 I, 239 ,240 Pu, 137 Cs in the environment of Lithuania

Autor: Š. Buivydas, R. Gvozdaitė, Xiaolin Hou, Žilvinas Ežerinskis, Rūta Druteikienė, A. Gudelis, J. Šapolaitė, Andrius Puzas, Vidmantas Remeikis

Publikováno v: Ezerinskis, Z, Hou, X, Druteikiene, R, Puzas, A, Sapolaite, J, Gvozdaite, R, Gudelis, A, Buivydas, S & Remeikis, V 2016, ' Distribution and source of 129 I, 239,240 Pu, 137 Cs in the environment of Lithuania ', Journal of Environmental Radioactivity, vol. 151, pp. 166-173 . https://doi.org/10.1016/j.jenvrad.2015.09.020

Fifty five soil samples collected in the Lithuania teritory in 2011 and 2012 were analyzed for (129)I, (137)Cs and Pu isotopes in order to investigate the level and distribution of artificial radioactivity in Lithuania. The activity and atomic ratio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::437c5d4a99a73be6c8be94eb9598ef68
https://doi.org/10.1016/j.jenvrad.2015.09.020