Browsing Ústav technologie stavebních hmot a dílců by Title
Now showing items 1-20 of 28
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Alternative Evaluation of the grindability of Pozzolanic Materials for Cement Production
(IOP Publishing, 2017-10-25)All conventional methods for the evaluation of grindability require a specific grinding instrument. These grinding instruments do not have any other practical use and thus are not very common. This paper focuses on the ... -
Behaviour of cement composites with lightweight and heavyweight aggregates at high temperatures
(Budapest University of Technology and Economics, 2017-03-24)This paper presents new results of the research of the influence of individual input components done on the behaviour of cement based composite materials exposed to high temperatures. A new approach of this research lies ... -
Composites Based on Alternative Raw Materials at High Temperature Conditions
(Budapest University of Technology and Economics, 2017-10-24)This paper presents newly developed polymer-cement composites. The primary binder (cement) was partially substituted by use of blast-furnace slag and high-temperature fly ash. A lightweight aggregate – agloporite (grain ... -
Development of Ultra High Performance Concrete and Reactive Powder Concrete with Nanosilica
(IOP Publishing, 2018-06-19)The article is dedicated to the design and production of Ultra High Performance Concrete (UHPC) and Reactive The article is dedicated to the design and production of Ultra High Performance Concrete (UHPC) and Reactive ... -
The Effect of Hydrophobization on the Properties of Mortar Mixtures
(IOP Publishing, 2018-08-01)One of the possible methods to reduce degradation effects due to the influence of moisture on building structures and materials is the use of hydrophobic agents - hydrophobization. The article deals with the influence of ... -
Effect of wood chips properties on mineralogical composition and microstructure of silicate matrix based composites
(IOP Publishing, 2018-07-16)The research presented in this article was focused on proving the effect of wood chips parameters on the hardening process of silicate matrix in cement-bonded particleboard. Namely content of humidity in the chips (in range ... -
The evaluation of the effect of crystallization additives on long term durability of self-compacting concrete
(IOP Publishing, 2018-07-16)The article deals with the influence of crystallisation additives on the life of self-compacting concrete (so-called SCC concrete) in case of exposure to aggressive gases. The effect of crystallization additives on the ... -
The FBC ash as a hydraulic ingredient of hydraulic lime
(Elsevier, 2017-01-31)This work is focused on the possibilities of utilization of ashes from fluidized bed combustion, i.e. FBC ashes, for the manufacturing of hydraulic lime. Alternative hydraulic binders are becoming very popular in the present ... -
The fly ash of class C for ceramic technology
(IOP Publishing, 2018-07-16)The properties of different Czech fluidized fly ashes FFA (class C fly ash according to ASTM C618 12a with high content of CaO in the form of anhydrite primarily) and emisions of SO2 in flue gas during the firing of FFA ... -
Impact of the grinding process on the granulometric properties of triclinic alite
(IOP Publishing, 2018-07-16)Four major clinker minerals, alite, belite, tricalcium aluminate and tetracalcium aluminate ferrite are crucial for cement properties. This work deals with alite as the most important clinker minerals. Alite is affected ... -
The influence of the addition of gypsum on some selected properties of lime-metakaolin mortars
(IOP Publishing, 2018-07-16)The renovation and replacement of historical plasters is still a very current topic. Today’s trend is for the production of dry mortar mixtures that can be used for the renovation of historic buildings. The article therefore ... -
The influence of the raw materials mixture on the properties of forsterite ceramics
(IOP Publishing, 2018-07-16)Forsterite ceramics is a part of the refractory magnesium ceramics. The aim of this paper is to characterize the properties of forsterite ceramics in dependence on different compositions of the raw material mixture. ... -
Methods of testing the properties of fibre-cement composites
(IOP Publishing, 2018-07-16)The paper deals with process of manufacturing the fibre-cement materials and methods of testing their climatic performance. Basic raw materials for production fibre-cement sheets are cement, cellulose fibers, reinforcing ... -
The microstructure of a cement composite based on a secondary raw materials
(IOP Publishing, 2018-07-16)Waste management and its use as a secondary raw material is a matter that is being given increasing attention. Such raw materials also include waste products from the energy industry or municipal waste disposed of from the ... -
Monitoring the long-term durability and microstructure of polymer concrete patching materials with high content of secondary raw materials using advanced methods
(IOP Publishing, 2018-07-16)For commercially produced polymer systems, only primary raw materials are used as fillers. These fillers are predominantly pure silica sand of various grading. The substitution of primary materials with secondary raw ... -
Mortars with crystalline additive in aggressive environments
(IOP Publishing, 2018-07-16)The paper describes how a crystalline additive influences the properties of cementbased composites. The investigation was focused on the degradation of mortars with crystalline additive exposed to selected aggressive ... -
Optimization of heavy weight concrete composition and process of prefabrication for prefabricated shielding cladding tiles
(IOP Publishing, 2018-06-15)The aim of experimental research was to verify the possibility of the prefabrication of the thin shielding cladding tiles from heavy weight concrete with fine. -
Raw materials for mullite grog manufacturing
(IOP Publishing, 2018-07-07)The primary condition for manufacturing is the correct choice of raw material, a suitable treatment facility, and a kiln capable of firing at temperatures above 1400 °C. This paper assesses some local raw materials for ... -
Repairing composite using hazardous waste containing heavy metals
(IOP Publishing, 2018-07-16)This research deals with the possibility of using hazardous waste in epoxy resinbased polymeric substances. More specifically, it is the use of neutralising galvanic sludge (NGS), which produces as a by-product in the ... -
Stabilization of the ammonia in SNCR fly ash - the influence of tannins presence on the preparation of an autoclaved aerated concrete
(IOP Publishing, 2019-08-14)Thanks to the legislative regulations on NOx emissions, a selective non-catalytic reduction (SNCR) technology had been introduced to a coal combustion process in power plants. The valuable by-product, fly ash, contains ...