Search Results - "Kalina, Lukáš"

Effect of Alkali Salts on the Hydration Process of Belite Clinker by Iliushchenko, Valeriia, Kalina, Lukáš, Sedlačík, Martin, Cába, Vladislav, Másilko, Jiří, Novotný, Radoslav

“…Belite-rich cement is a low carbon footprint binder. However, its use is accompanied by a low initial rate of hydration. This can be partially eliminated by…”
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Determination of surface properties of treated cement pastes by acoustic methods and scratch test - pilot experiments by Topolář, Libor, Kalina, Lukáš, Kocáb, Dalibor, Iliushchenko, Valeriia, Bílý, Petr, Fládr, Josef

“…The concrete has been and at the same time will be the most used construction material worldwide. It is exposed to various physical and chemical degradation…”
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Spectral characterization and comparison of humic acids isolated from some European lignites by Doskočil, Leoš, Burdíková-Szewieczková, Jana, Enev, Vojtěch, Kalina, Lukáš, Wasserbauer, Jaromír

“…•Chemical properties of lignite humic acids from six European coal basins are similar.•EEM spectra could be regarded as fingerprints of humic acids and parent…”
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Philosophy of rational mixture proportioning of alkali-activated materials validated by the hydration kinetics of alkali-activated slag and its microstructure by Bílek, Vlastimil, Novotný, Radoslav, Koplík, Jan, Kadlec, Martin, Kalina, Lukáš

“…There are many highly variable approaches to mix proportioning of alkali-activated materials (AAMs), which considerably contribute to their great complexity…”
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Polyethylene glycol molecular weight as an important parameter affecting drying shrinkage and hydration of alkali-activated slag mortars and pastes by Bílek, Vlastimil, Kalina, Lukáš, Novotný, Radoslav

“…•Increasing glycol dose had minor effect on strength while significant on shrinkage.•Longer molecules reduced drying shrinkage of AAS more than short…”
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Doubts over capillary pressure theory in context with drying and autogenous shrinkage of alkali-activated materials by Kalina, Lukáš, Bílek, Vlastimil, Bartoníčková, Eva, Kalina, Michal, Hajzler, Jan, Novotný, Radoslav

“…•Amino alcohol surfactants reduced the surface tension of AAS pore solutions.•Surfactants had a minor effect on autogenous shrinkage.•Drying shrinkage was…”
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On the action mechanism of lignosulfonate plasticizer in alkali-activated slag-based system by Kalina, Lukáš, Bílek, Vlastimil, Hrubý, Petr, Iliushchenko, Valeriia, Kalina, Michal, Smilek, Jiří

“…Workability improvement of alkali-activated materials by common plasticizers used for ordinary Portland cement is usually an issue, but certain effectiveness…”
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Epitaxial Guidance of Adamantyl-Substituted Polythiophenes by Self-Assembled Monolayers by Farka, Dominik, Ciganek, Martin, Veselý, Dominik, Kalina, Lukáš, Krajčovič, Jozef

“…The anisotropic nature of charge transport through organic materials requires high control over the self-assembly of the organic materials. This is…”
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Some Issues of Shrinkage-Reducing Admixtures Application in Alkali-Activated Slag Systems by Bílek, Vlastimil, Kalina, Lukáš, Novotný, Radoslav, Tkacz, Jakub, Pařízek, Ladislav

“…Significant drying shrinkage is one of the main limitations for the wider utilization of alkali-activated slag (AAS). Few previous works revealed that it is…”
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Internal hydrophobic treatment for mortar containing supplementary cementitious materials: thermal analysis of kinetics and products of hydration by Materak, Kalina, Wieczorek, Alicja, Chałupka-Śpiewak, Karolina, Koniorczyk, Marcin, Kalina, Lukáš, Bílek, Vlastimil

“…Abstract The presented research investigates the application of the organosilicon admixtures based on triethoxyoctylsilane (OTES) on the hydration of the…”
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Novel highly stable conductive polymer composite PEDOT:DBSA for bioelectronic applications by Tumová, Šárka, Malečková, Romana, Kubáč, Lubomír, Akrman, Jiří, Enev, Vojtěch, Kalina, Lukáš, Vojtková, Eva, Pešková, Michaela, Víteček, Jan, Vala, Martin, Weiter, Martin

“…In this work, a novel conductive polymer composite consisting of poly(3,4-ethylenedioxythiophene) doped with dodecylbenzenesulfonic acid (PEDOT:DBSA) for…”
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Experimental Study of Slag Changes during the Very Early Stages of Its Alkaline Activation by Bílek, Jr, Vlastimil, Hrubý, Petr, Iliushchenko, Valeriia, Koplík, Jan, Kříkala, Jakub, Marko, Michal, Hajzler, Jan, Kalina, Lukáš

“…The very early stages of alkaline activation of slag control its rheology and setting, but also affect its hydration, which occurs later. Simultaneously, these…”
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NiFe2O4 Nanoparticles Synthesized by Dextrin from Corn-Mediated Sol–Gel Combustion Method and Its Polypropylene Nanocomposites Engineered with Reduced Graphene Oxide for the Reduction of Electromagnetic Pollution by Yadav, Raghvendra Singh, Kuřitka, Ivo, Vilcakova, Jarmila, Machovsky, Michal, Skoda, David, Urbánek, Pavel, Masař, Milan, Jurča, Marek, Urbánek, Michal, Kalina, Lukáš, Havlica, Jaromir

“…In this work, nickel ferrite (NiFe2O4) nanoparticles were synthesized by dextrin from corn-mediated sol–gel combustion method and were annealed at 600, 800,…”
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Blastfurnace Hybrid Cement with Waste Water Glass Activator: Alkali–Silica Reaction Study by Kalina, Lukáš, Bílek, Vlastimil, Bradová, Lada, Topolář, Libor

“…Hybrid systems represent a new sustainable type of cement combining the properties of ordinary Portland cement and alkali-activated materials. In this study, a…”
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Correlating Hydration of Alkali-Activated Slag Modified by Organic Additives to the Evolution of Its Properties by Bílek, Jr, Vlastimil, Kalina, Lukáš, Dvořák, Richard, Novotný, Radoslav, Švec, Jiří, Másilko, Jiří, Šoukal, František

“…This study investigates the relationships between the hydration kinetics of waterglass-activated slag and the development of its physical-mechanical…”
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Cement Kiln By-Pass Dust: An Effective Alkaline Activator for Pozzolanic Materials by Kalina, Lukáš, Bílek, Jr, Vlastimil, Kiripolský, Tomáš, Novotný, Radoslav, Másilko, Jiří

“…Cement kiln by-pass dust (CKD) is a fine-grained by-product of Portland clinker manufacturing. Its chemical composition is not suitable for returning back into…”
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Lightweight NiFe2O4-Reduced Graphene Oxide-Elastomer Nanocomposite flexible sheet for electromagnetic interference shielding application by Yadav, Raghvendra Singh, Kuřitka, Ivo, Vilcakova, Jarmila, Skoda, David, Urbánek, Pavel, Machovsky, Michal, Masař, Milan, Kalina, Lukas, Havlica, Jaromir

“…This paper demonstrates a three-dimensional electromagnetic interference shielding nanocomposite flexible sheet which is consisted of NiFe2O4 spinel ferrite…”
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Physico-Chemical Properties of Lithium Silicates Related to Their Utilization for Concrete Densifiers by Kalina, Lukáš, Bílek, Vlastimil, Sedlačík, Martin, Cába, Vladislav, Smilek, Jiří, Švec, Jiří, Bartoníčková, Eva, Rovnaník, Pavel, Fládr, Josef

“…Protection of concrete against aggressive influences from the surrounding environment becomes an important step to increase its durability. Today, alkali…”
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Effect of Na₃PO₄ on the Hydration Process of Alkali-Activated Blast Furnace Slag by Kalina, Lukáš, Bílek, Vlastimil, Novotný, Radoslav, Mončeková, Miroslava, Másilko, Jiří, Koplík, Jan

“…In recent years, the utilization of different non-traditional cements and composites has been increasing. Alkali-activated cementitious materials, especially…”
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Comparison of Testing Methods for Evaluating the Resistance of Alkali-Activated Blast Furnace Slag Systems to Sulfur Dioxide by Hrubý, Petr, Kalina, Lukáš, Bílek, Jr, Vlastimil, Keprdova, Sarka, Másilko, Jiří, Plšková, Iveta, Koplík, Jan, Topolář, Libor

“…Alkali-activated systems (AAS) represent an ecologically and economically sustainable inorganic binder as an alternative to ordinary Portland cement (OPC). One…”
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