Browsing Ústav technologie stavebních hmot a dílců by Title
Now showing items 1-20 of 57
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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
(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 ... -
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 ... -
Carbon Nanotubes in Cementitious Composites: Dispersion, Implementation, and Influence on Mechanical Characteristics
(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 -
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 ... -
Determine the Compressive Strength of Calcium Silicate Bricks by Combined Non-Destructive Method
(Hindawi, 2014-09-01)The paper deals with the application of combined non-destructive method for assessment of compressive strength of calcium silicate bricks. In this case it is a combination of the rebound hammer method and ultrasonic pulse ... -
Development of Crystallinity of Triclinic Polymorph of Tricalcium Silicate
(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 grout for additional seal embankment dams
(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 ... -
Development of microstructure of the fly ash aerated concrete in time
(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 ... -
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 ... -
Development of Vacuum Insulation Panels with Utilization of Organic By-Products
(MDPI, 2020-03-04)The need for the development of new, advanced building materials increases every year, especially due to the necessary diminution of energy performance for building structures and for building production itself (including ... -
Efect of Chemical Aggressive Media on the Flexural Properties of Cured-In-Place Pipes Supported by Microstructure Observation and Acoustic Emission
(MDPI, 2020-07-08)The cured-in-place pipe (CIPP) method is currently the most frequently used approach for the renovation of piping without digging; this technology is suitable for pipes made from all types of material. The authors of this ... -
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 Imposed Shear Strain on Steel Ring Surfaces during Milling in HighSpeed Disintegrator
(MDPI, 2020-05-13)This contribution characterizes the performance of a DESI 11 highspeed disintegrator working on the principle of a pin mill with two opposite counterrotating rotors. As the ground material, batches of Portland cement ... -
Effect of Inorganic SiO2 Nanofibers in High Strength Cementitious Composites
(EDP Series, 2019-04-08)The paper deals with the verification of the effect of the addition of inorganic SiO2 nanofibers to cement composites. In the first stage, a stable suspension of SiO2 nanofibers was prepared in an aqueous medium. It is ... -
The Effect of the Wear of Rotor Pins on Grinding Efficiency in a High-speed Disintegrator
(Kaunas University of Technology, 2018-02-19)One of the directions intensively investigated in the field of milling is high-energy milling (HEM). One type of HEM is high-speed grinding in high-speed disintegrators. This type of mill is particularly suitable for the ... -
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 ...