Zobrazeno 1 - 10
of 75
pro vyhledávání: '"František Šoukal"'
Autor:
František Šoukal, Luboš Bocian, Radoslav Novotný, Lucie Dlabajová, Nikola Šuleková, Jan Hajzler, Ondřej Koutný, Martina Drdlová
Publikováno v:
Materials, Vol 16, Iss 20, p 6670 (2023)
This paper deals with the optimization of reactive powder concrete mixtures with respect to the addition of silica fume and the type of polycarboxylate superplasticizer used. First, the properties of reactive powder concrete with eight different comm
Externí odkaz:
https://doaj.org/article/29443f132ccc4038b69db673898da65c
Autor:
Vlastimil Bílek, Lukáš Kalina, Richard Dvořák, Radoslav Novotný, Jiří Švec, Jiří Másilko, František Šoukal
Publikováno v:
Materials, Vol 16, Iss 5, p 1908 (2023)
This study investigates the relationships between the hydration kinetics of waterglass-activated slag and the development of its physical-mechanical properties, as well as its color change. To modify the calorimetric response of alkali-activated slag
Externí odkaz:
https://doaj.org/article/81b51f795221468aa8066221be7472c3
Autor:
Michal Marko, Petr Hrubý, Martin Janča, Jakub Kříkala, Jan Hajzler, František Šoukal, Jan Vojtíšek, Martin Doležal
Publikováno v:
Materials, Vol 15, Iss 14, p 4730 (2022)
The possibility of the formation of an alkali–silicate reaction (ASR) is a crucial issue for the service life of concrete. The coexistence of key parameters such as the presence of alkalis, reactive SiO2, humidity, and temperature predetermine the
Externí odkaz:
https://doaj.org/article/1353514d854e44c08b8d6667848a687b
Autor:
Pavel Šiler, Iva Kolářová, Radoslav Novotný, Jiří Másilko, Jan Bednárek, Martin Janča, Jan Koplík, Jan Hajzler, Lukáš Matějka, Michal Marko, Jiří Švec, Martin Zlámal, Eva Kuzielová, Tomáš Opravil, František Šoukal
Publikováno v:
Materials, Vol 13, Iss 22, p 5215 (2020)
Increasing utilization of secondary raw materials and alternative fuels results in increasing contents of metals in cements. Zinc is one of these elements. It comes to cement with secondary raw materials such as slag or fly ash or by the utilization
Externí odkaz:
https://doaj.org/article/7c5ff042bb7949b98adebfdf9e0af842
Autor:
Pavel Šiler, Iva Kolářová, Radoslav Novotný, Jiří Másilko, Jan Bednárek, Martin Janča, Jan Koplík, Jan Hajzler, Lukáš Matějka, Michal Marko, Přemysl Pokorný, Tomáš Opravil, František Šoukal
Publikováno v:
Materials, Vol 12, Iss 18, p 2930 (2019)
This work deals with the influence of zinc on cement hydration. The amount of zinc in cement has increased over recent years. This is mainly due to the utilization of solid waste and tires, which are widely used as a fuel in a rotary kiln. Zinc can a
Externí odkaz:
https://doaj.org/article/abd3cbe21e5744189b41401340b4a031
Publikováno v:
Materials, Vol 9, Iss 7, p 533 (2016)
The fixation of heavy metals (Ba, Cu, Pb) in an alkali-activated matrix was investigated. The matrix consisted of fly ash and blast furnace slag (BFS). The mixture of NaOH and Na-silicate was used as alkaline activator. Three analytical techniques we
Externí odkaz:
https://doaj.org/article/c563519fac344f28a8bf37ae6f5d8741
Publikováno v:
Solid State Sciences. 138:107156
Autor:
František Šoukal, V. Nevrlý, Jaromír Pořízka, Lukáš Kalina, Jiří Másilko, P. Hrubý, Thomas Gries, M. Kimm
Publikováno v:
Materiali in tehnologije. 54:203-210
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 2021, vol. 1039, issue 1, p. 1-9.
Metals and metal containing compounds have significant effect on cement hydration mechanism and kinetics. The recycling of waste materials leads to increase of content of metals in various industrial products and visibly affects properties of the Por
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a378fd3e408c3cfbf0471a698d88f558
https://hdl.handle.net/11012/201779
https://hdl.handle.net/11012/201779
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 2020, vol. 1039, p. 1-7.
The work deals with the impact of crushed brick on properties of Portland cement binder. The source of brick recycled materials is not only the demolition waste, but also the waste from brick production. One way to reduce the amount of this recyclate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b1c75b743aa273dad8f56ef62edfa45
https://hdl.handle.net/11012/196530
https://hdl.handle.net/11012/196530