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Effect of carbon nanotubes on the mechanical fracture properties of fly ash geopolymer
(Elsevier, 2016-06-01)Fly ash geopolymer is amorphous aluminosilicate material which is considered as alternative to Portland cement concrete. One of the limiting factors of its utilization is an increased shrinkage and related deterioration ... -
Effect of polyethylene glycol addition on metakaolin-based geopolymer
(Elsevier, 2016-06-01)Polyethylene glycol is a non-toxic water soluble polymer often used in many industrial applications. The aim of this paper is to study the effect of polyethylene glycol with relative molecular weight ranging between 400–20000 ... -
Thermal behaviour of metakaolin/fly ash geopolymers with chamotte aggregate
(MDPI, 2016-06-30)Geopolymers are generally appreciated for their good resistance against high temperatures. This paper compares the influence of thermal treatment with temperatures ranging from 200–1200 °C on the mechanical properties and ... -
Properties of concrete with partial replacement of natural aggregate by recycled concrete aggregates from precast production
(Elsevier, 2016-08-03)Recycled concrete aggregates (RCA) can be used as a replacement of natural aggregates for a concrete production to save natural sources and also to decrease amount of demolition waste which has to be landfilled. Precast ... -
Thermodynamic Stability of Ettringite Formed by Hydration of Ye’elimite Clinker
(Hindawi Publishing Corporation, 2016-09-08)Although the stability of ettringite has been the subject of much research, the solution is not yet fully clear. Ettringite is generally considered to be stable up to a temperature of 110°C; however, some investigators ... -
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 ... -
On the effect of addition of carbon nanotubes on the electric conductivity of alkali-activated slag mortars
(IOP Publishing, 2017-10-18)This paper presents basic electric properties of laboratory prepared alkali-activated composite materials on the basis of finely ground granular high furnace slag to which various quantities of carbon nanotubes (CNT) have ... -
Electrical properties of alkali-activated slag composite with combined graphite/CNT filler
(IOP Publishing Ltd., 2017-10-25)Alkali-activated industrial by-products such as blast furnace slag are known to possess properties which are comparable to or even better than those observed for ordinary Portland cement. The combination of alkali-activated ...