• Composite Binder Containing Industrial By-Products (FCCCw and PSw) and Nano SiO2 

  Banevičien, Vilma; Malaiškiene˙, Jurgita; Zach, Jiří; Dvořák, Karel (MDPI, 2021-03-25)

  This article analyzes the integrated effect of industrial by-products (spent uidized bed catalytic cracking catalyst waste (FCCCw) and paper sludge waste (PSw) generated in paper manufacturing) combined with nano-SiO2 (NS) ...

• Study of Possibilities of Using Special Types of Building and Demolition Waste in Civil Engineering 

  Drochytka, Rostislav; Dufek, Zdeněk; Michalčíková, Magdaléna; Hodul, Jakub (Budapest University of Technology and Economics, 2020-01-15)

  Construction and demolition waste makes up a substantial part of all waste produced in Europe. Its impact on the environment may be relatively small, but it exists in large amounts and holds many options of re-use. This ...

• The Effect of Class C Fly Ash on the Plasticity and Ageing of Ceramic Mixtures Based on Kaolin 

  Sokolář, Radomír; Nguyen, Martin (MDPI, 2021-05-23)

  The main aim of the presented article is to describe the behavior of class C fly ash—kaolin plastic doughs during the ageing process. Class C fly ash (CCFA) from the fluidized technology of fuel combustion in a thermal ...

• The Effect of the Composition of a Concrete Mixture on Its Volume Changes 

  Ťažký, Martin; Bodnárová, Lenka; Ťažká, Lucia; Hela, Rudolf; Meruňka, Milan; Hlaváček, Petr (MDPI, 2021-02-09)

  The presented research aims to clarify the specific effect of the individual components of concrete with Portland cement CEM I 42.5 R on the volume changes of concrete. The effect of the filler component was evaluated from ...

• Development and Properties of New Mullite Based Refractory Grog 

  Zemánek, David; Lang, Karel; Tvrdík, Lukáš; Všianský, Dalibor; Nevřivová, Lenka; Štursa, Petr; Kovář, Pavel; Keršnerová, Lucie; Dvořák, Karel (MDPI, 2021-02-07)

  The presented study is focused on optimization and characterization of a high-alumina refractory aggregate based on natural raw materials—kaolins, claystone, and mullite dust by-product (used to increase the alumina and ...

• Conversion of silica by-product into zeolites by thermo-sonochemical treatment 

  Vaičiukynien, Danute; Jakevičius, Leonas; Kantautas, Aras; Vaitkevičius, Vitoldas; Vaičiukynas, Vilimantas; Dvořák, Karel (Elsevier, 2021-04-13)

  The fine powdered silica by-product of processing of aluminum fluoride (fertilizer plant, Lithuania) was used for zeolite synthesis as silica and aluminum source. The effect of sonication time and the time of hydrothermal ...

• An Analysis of Crystalline Admixtures in Terms of Their Influence on the Resistance of Cementitious Composites to Aggressive Environments 

  Dufka, Amos; Žižková, Nikol; Brožovský, Jiří (Budapest University of Technology and Economics, 2021-01-01)

  This paper describes the influence of crystalline admixtures on the chemical resistance of cement composites exposed to aggressive environments. The effect of the crystalline admixtures was determined by a series of ...

• Design and verification of properties of heavy-weight concrete for the production of weights 

  Hela, Rudolf; Bodnárová, Lenka (IOP Publishing, 2020-05-18)

  The paper deals with the design of composition and verification of the properties of heavy-weight concrete for the production of weights. Heavy weights from fine-grained heavy-weight concrete can be used as a substitute ...

• The influence of green walls on interior climate conditions and human health 

  Peterková, Jitka; Michalčíková, Magdaléna; Novák, Vítězslav; Slávik, Richard; Zach, Jiří; Korjenic, Azra; Hodná, Jana; Raich, Benjamin (EDP Sciences, 2019-09-02)

  In recent years, many researchers have addressed the issue of interior climate and how it affects human health. Investigations performed at schools and office buildings have found that CO2 concentrations often exceed the ...

• Study of behaviour of thermal insulation materials under extremely low pressure 

  Zach, Jiří; Peterková, Jitka; Bubeník, Jan (EDP Sciences, 2019-09-02)

  In most thermal insulation materials, reduced internal pressure improves thermal insulation properties. It reduces heat transport by convection as well as heat conduction in gases in the material´s pore structure. The ...

• Phase Change Materials and Their Benefits in ETICS 

  Sokola, Lubomír; Žižková, Nikol; Novák, Vítězslav; Jakubík, Aleš (MDPI, 2020-11-29)

  The research is focused on two main points. The first point discusses the water steam condensation on the surface of ETICS and the phenomenon associated biocide assaults. In the second point, we focused on warming ETICS ...

• Abrasive Wear Resistance of Concrete in Connection with the Use of Crushed and Mined Aggregate, Active and Non-Active Mineral Additives, and the Use of Fibers in Concrete 

  Bodnárová, Lenka; Ťažký, Martin; Ťažká, Lucia; Hela, Rudolf; Pikna, Ondřej; Sitek, Libor (MDPI, 2020-11-27)

  Virtually every concrete structure comes into contact with abrasive effects of flowing media or solids, which have a direct impact on the durability of concrete. An abrasive effect is most pronounced in transport or water ...

• Impact of Fly Ash as a Raw Material on the Properties of Refractory Forsterite–Spinel Ceramics 

  Nguyen, Martin; Sokolář, Radomír (MDPI, 2020-09-22)

  This article examines the process for the synthesis of forsterite-spinel (2MgO center dot SiO2/MgO center dot Al2O3) refractory ceramics from fly ash and alumina as sources of aluminum oxide. Raw materials were milled, ...

• Wear of grinding rotors with thermally-sprayed coatings in a high-speed mill 

  Tkachenko, Serhii; Dvořák, Karel; Jech, David; Slámečka, Karel; Klakurková, Lenka; Paloušek, David; Čelko, Ladislav (Elsevier, 2018-10-15)

  In this paper, the erosion behavior of three types of protective thermally-sprayed coatings and non-coated substrate steel was investigated under semi-industrial test conditions using a laboratory high-speed pin mill DESI-11. ...

• The Influence of Crystalline Admixtures on the Properties and Microstructure of Mortar-Containing By-Products 

  Hodul, Jakub; Žižková, Nikol; Borg, Ruben Paul (MDPI, 2020-08-21)

  Crystalline admixtures and industrial by-products can be used in cement-based materials in order to improve their mechanical properties. The research examined long-term curing and the exposure to environmental actions of ...

• Development of Crystallinity of Triclinic Polymorph of Tricalcium Silicate 

  Ravaszová, Simona; Dvořák, Karel (MDPI, 2020-08-24)

  Tricalcium silicate phase is one of the main components of modern Portland cements. One of the major industrial challenges in the field of cement production is mapping the influence of individual clinker minerals and their ...

• Development of microstructure of the fly ash aerated concrete in time 

  Drochytka, Rostislav; Helanová, Ester (Elsevier, 2015-07-09)

  Calciumhydrosilicate components formed during autoclaving process are highly complex formations, which often blend together mutually and form a variety of intermediate products, from completely amorphous, to the good ...

• Solidification of Hazardous Waste with the Aim of Material Utilization of Solidification Products 

  Hodul, Jakub; Dohnálková, Božena; Drochytka, Rostislav (Elsevier, 2015-07-09)

  This work deals with the possibility of using solidification technology to transform the hazardous waste with the aim to achieve the material utilization of solidification products. For this purpose, it is necessary to ...

• Development of grout for additional seal embankment dams 

  Michalčíková, Magdaléna; Černý, Vít; Drochytka, Rostislav (Elsevier, 2015-06-25)

  The technology of sealing sand and gravel by chemical injection has been known and used for a long time. Chemical grouting is however expensive and sometimes the use of cement does not lead to the desired effect. That is ...

• Carbon Nanotubes in Cementitious Composites: Dispersion, Implementation, and Influence on Mechanical Characteristics 

  Jarolím, Tomáš; Labaj, Martin; Hela, Rudolf; Michnová, Kamila (Hindawi, 2016-06-14)

  In article were descibed possibilities of CNT's dipersion. Implementation CNT to the cements matrix and it's influence to the mechanical properties

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