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Techniques of Soil Modification for Re-use in Construction
(IOP Publishing, 2018-07-16)Nowadays effort is made to study what effects may impact the environment and to address the issue of waste management. The majority of all waste produced is construction waste and demolition debris (approx. 65%). This ... -
Effect of particle size of waste brick powder on the properties of alkaline activated materials
(IOP Publishing, 2018-07-12)The properties of alkaline activated brick dust mixed with water glass with a silicate modulus (Ms) of 1.0 were studied in fresh mixtures as well as hardened products in connection with the particle size of the dust. The ... -
Effect of steel fibres dosage in alkali-activated slag mortars on acoustic emission obtained during three-point bending tests
(EDP Sciences – Web of Conferences, 2017-05-24)The acoustic emission phenomenon is directly associated with nucleation of cracks in structural materials during loading. This paper analyses acoustic emission signals captured during three-point bending fracture tests of ... -
The Assessment of Cement Mortars after Thermal Degradation by Acoustic Non-destructive Methods
(IOP Publishing, 2017-10-25)Thanks, the terrorist attacks on the worldwide interest in the design of structures for fire greatly increased. One of the advantages of concrete over other building materials is its inherent fire-resistive properties. The ... -
Monitoring of concrete hydration by electrical measurement methods
(Elsevier, 2016-08-01)Analysis of impedance spectra of inhomogeneous materials is a part of the impedance spectroscopy which is still waiting for its development. Materials having higher electric resistance values (over 500 kohm) can be considered ... -
Effect of the preparation of lime putties on their properties
(Springer Nature, 2017-12-08)In the study of lime as the basic component of historical mortars and plasters, four lime putties prepared from various kinds of lime of various granulometry and by various ways of preparation were evaluated. The rheological ... -
Rheological and mechanical properties of alkali-activated brick powder based pastes: effect of amount of alkali activator
(IOP Publishing, 2018-07-12)The rheological behaviour and mechanical properties of alkali-activated materials prepared by activation of a brick powder by alkaline solution (alkali + water glass) is presented in this paper. The effect of quantity of ... -
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 ... -
Hygric and mechanical parameters of ternary binder based plasters lightweighted by expanded perlite
(IOP Publishing, 2018-07-12)This article is focused on modern plasters with improved thermal insulating ability. The studied plasters were composed of lime, cement, ceramic powder, expanded perlite and silica sand. Regarding the matrix, three kinds ... -
Effect of chitosan ethers on fresh state properties of lime mortars
(IOP Publishing, 2017-10-25)The fresh state properties of mortars are eminently important since determine the material workability and also have a great influence on its hardened state characteristics. In this paper, the behaviour of fresh lime mortars ... -
Ternary binder based plasters with improved thermal insulating ability
(IOP Publishing, 2017-10-25)New kind of plasters with improved thermal insulating ability are presented in this article. Improvement was reached by utilization of lightweight expanded perlite with high porosity. The second used aggregate was silica ... -
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 ... -
Usability of alternative admixtures for the production of blended cements
(IOP Publishing, 2018-07-16)This paper studies how pozzolan materials can be mechanically activated. For this, two major grinding technologies and different types of artificial pozzolans, such as red brick dust, granulated blastfurnace slag and sheet ... -
Experimental evaluation of the effect of carbon fibres on acoustic emission parameters obtained during compressive strength tests of alkaliactivated slag composites
(IOP Publishing, 2018-07-12)The generation of acoustic emission signals is directly associated with formation of cracks in materials during loading. This paper deals with possibilities of acoustic emission method application as the tool for the ... -
Rheological and mechanical properties of lime-brick powder mortars with expanded clay aggregate
(IOP Publishing, 2018-07-16)The rheological behaviour and mechanical properties of lightweight lime-brick powder mortars with combined expanded clay-sand aggregates are presented in this paper. The rheological investigation included the characterization ... -
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 ... -
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 ... -
Study of hydration process of ternesite clinker
(IOP Publishing, 2018-07-16)Currently ternesite, Ca5(SiO4)2SO4, is used in the cement production, is one of two key phases of calcium sulfoaluminate cement. Some investigators claim that this phase is nearly inert or very low reactive and it hydrates ... -
Technology of Remediation of Embankment Dams by Optimal Grout
(Elsevier, 2016-05-31)Floods represent one of the greatest direct dangers of natural disasters in Europe. During floods, substantial material damage and often even losses of human life may occur. In the Czech Republic both of these were recorded ... -
Nonlinear Elastic Wave Spectroscopy with MLS Perturbation Signal
(Výzkumný ústav stavebních hmot,a.s., 2016-05-31)The article describes a test procedure based on the fundamental principle of Nonlinear Elastic Wave Spectroscopy. Without integration of all test stages into one automated measurement station and without Maximum Length ...
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