CMV - laboratoř anorganických materiálů
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Influence of Active Alumina on the Hydration Process of Portland Cement
(Elsevier, 2016-08-04)The work is interested in the study of the hydration process by means of the isothermal calorimetry method. The Portland cement hydration process led to gradual consumption of contained calcium sulfate. This sulfate depletion ... -
Hexavalent chromium reduction by ferrous sulphate heptahydrate addition into the Portland clinker
(Elsevier, 2016-08-01)Nowadays, hexavalent chromium and its content in Portland cement is very actual and often discussed topic. The goal of this study was to observe the influence of different ways of addition of ferrous sulphate heptahydrate ... -
Properties of cement pastes with zeolite during early stage of hydration
(Elsevier, 2016-08-04)Properties of cement pastes with various replacement levels of natural zeolite were tested by isothermal calorimetry and rotational rheology. Zeolite from the Eastern Slovakia region was used for tests. Kinetics of exothermic ... -
Impact of organic and integrated pest management on the elemental composition of wine and grapes in a season with high fungal pressure
(Polish Society for Magnesium Research and UWM in Olsztyn, 2021-12-01)The aim of this study was to compare organic and integrated pest management systems in terms of the influence of the application of specific pesticides on the elemental composition of grapes and wine. Samples of wine and ... -
Modelling of packing density for particle composites design
(Elsevier, 2016-08-03)Effective packing of solid particles is one of the main topics in the field of ceramics, powder metallurgy and concrete technology. In these material sectors it is necessary to maximise or optimise the packing density of ... -
Elemental composition of fruits from different Black elder (Sambucus nigra L.) cultivars grown in the Czech Republic
(Polish Society for Magnesium Research, 2015-02-09)Black elder is a deciduous shrub widely used in medicine, pharmacy and food industry. This study presents a comparison of the elemental composition of fruits (berries) from the Black elder (Sambucus nigra L.) cultivars ... -
Preparation of magnetic nanoparticles by one step synthesis with morphology of particles changed based on time of reaction and temperature treatment
(Taylor & Francis, 2021-01-01)In present study, nanosized iron oxides particles are synthetised by easy one step precipitation from Mohric salt (NH4)(2)Fe(SO4)(2)center dot 6H(2)O reacting with sodium hydroxide solution in temperature up to 60 degrees ... -
Silver Nanoparticles Stabilised by Cationic Gemini Surfactants with Variable Spacer Length
(MDPI, 2017-10-23)The present study is focused on the synthesis and investigation of the physicochemical and biological properties of silver nanoparticles stabilized with a series of cationic gemini surfactants having a polymethylene spacer ... -
Determination of Critical Parameters of Drug Substance Influencing Dissolution: A Case Study
(Hindawi Publishing Corporation, 2014-09-15)The purpose of this study was to specify critical parameters (physicochemical characteristics) of drug substance that can affect dissolution profile/dissolution rate of the final drug product manufactured by validated ... -
The field of solid solutions in ternary system of synthetic apatite-type alkaline earth element-yttrium-silicate oxybritholite phases of the composition: AEE(delta)Y(10-delta)[SiO4](6)O3-0.5 delta, where AEE=Ca, Sr and Ba
(Elsevier Ltd, 2016-01-08)This contribution deals with the synthesis, properties and investigation of the field of solid solutions formed between the three end-members of apatite-type alkaline earth element-yttrium-silicate oxybritholites with the ... -
The determination of the influence of pH value of curing conditions on Portland cement hydration
(Elsevier, 2016-09-01)Water composition during cement hydration can be changed due to migration of ions from the cement matrix to the solution. The storage of various materials together can lead to transfer of various ions and distortion of ... -
Effect of Ultrasonication Dispersion Technique on Sintering Properties of CNT Reinforced Al-Zn-Mg-Cu Powder
(Polish Academy of Sciences, 2017-01-01)CNT has been researched significantly due to its properties especially mechanical and conductivity properties. Due to strong affinity between particles, dispersion has been remained a problem for its applications. ... -
Introduction of novel kinetic approach to calculation of activation energy and its application to the sinter-crystallization of strontian feldspar
(Elsevier, 2016-11-05)The kinetics, the mechanism and the thermodynamics of activated state of formation of primary strontian feldspar via sinter-crystallization of non-equilibrium melt during the thermal treatment of ceramic body was investigated ... -
Influence of Barium Oxide Additions on Portland Clinker
(Institute of Rock Structure and Mechanics of The Czech Academy of Sciences, v. v. i., 2017-01-02)Nowadays, nuclear power plants are widespread around the world and research is of great interest. Together with nuclear research, shielding of different types of radiation is an important current topic of research aiming ... -
Influence of Pb Dosage on Immobilization Characteristics of Different Types of Alkali-Activated Mixtures and Mortars
(Hindawi, 2018-01-11)Alkali-activated matrices are suitable materials for the immobilization of hazardous materials such as heavy metals.. is paper is focused on the comparison of immobilization characteristics of various inorganic composite ... -
The formation of feldspar strontian (SrAl2Si2O8) via ceramic route: Reaction mechanism, kinetics and thermodynamics of the process
(Elsevier, 2016-05-15)The reaction mechanism, the equilibrium composition, the temperature range of stability of formed intermediates as well as the kinetics and thermodynamics of activated state during the formation of monoclinic strontium-a ... -
Some Issues of Shrinkage-Reducing Admixtures Application in Alkali-Activated Slag Systems
(MDPI, 2016-06-10)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 possible to reduce AAS drying shrinkage by the use of shrinkage-reducing ... -
The Characterization of Fixation of Ba, Pb, and Cu in Alkali-Activated Fly Ash/Blast Furnace Slag Matrix
(MDPI, 2016-06-30)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. ... -
Effect of Na3PO4 on the Hydration Process of Alkali-Activated Blast Furnace Slag
(MDPI, 2016-05-20)In recent years, the utilization of different non-traditional cements and composites has been increasing. Alkali-activated cementitious materials, especially those based on the alkali activation of blast furnace slag, have ... -
Polypropylene Nanocomposite Filled with Spinel Ferrite NiFe2O4 Nanoparticles and In-Situ Thermally-Reduced Graphene Oxide for Electromagnetic Interference Shielding Application
(MDPI, 2019-04-16)Herein, we presented electromagnetic interference shielding characteristics of NiFe2O4 nanoparticlesin-situ thermally-reduced graphene oxide (RGO)polypropylene nanocomposites with the variation of reduced graphene oxide ...
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