| FOŘT, Jan, Jiří ŠÁL, Radek ŠEVČÍK, Magdaléna DOLEŽELOVÁ, Martin KEPPERT, Miloš JERMAN, Martina ZÁLESKÁ, Vojtěch STEHEL a Robert ČERNÝ. Biomass fly ash as an alternative to coal fly ash in blended cements: Functional aspects. Construction and Building Materials. Elsevier Ltd, 2020, Neuveden, č. 2020, s. 1 - 11. ISSN 0950-0618. |
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@article{55901,
author = {Fořt, Jan and Šál, Jiří and Ševčík, Radek and Doleželová, Magdaléna and Keppert, Martin and Jerman, Miloš and Záleská, Martina and Stehel, Vojtěch and Černý, Robert},
article_number = {2020},
keywords = {Biomass fly ash; Pozzolanic activity; Heavy metals; Cement composites; Strength},
language = {eng},
issn = {0950-0618},
journal = {Construction and Building Materials},
title = {Biomass fly ash as an alternative to coal fly ash in blended cements: Functional aspects},
url = {https://www.sciencedirect.com/science/article/abs/pii/S0950061820335480?via%3Dihub},
volume = {Neuveden},
year = {2020}
}
TY - JOUR
ID - 55901
AU - Fořt, Jan - Šál, Jiří - Ševčík, Radek - Doleželová, Magdaléna - Keppert, Martin - Jerman, Miloš - Záleská, Martina - Stehel, Vojtěch - Černý, Robert
PY - 2020
TI - Biomass fly ash as an alternative to coal fly ash in blended cements: Functional aspects
JF - Construction and Building Materials
VL - Neuveden
IS - 2020
SP - 1 - 11
EP - 1 - 11
PB - Elsevier Ltd
SN - 09500618
KW - Biomass fly ash
KW - Pozzolanic activity
KW - Heavy metals
KW - Cement composites
KW - Strength
UR - https://www.sciencedirect.com/science/article/abs/pii/S0950061820335480?via%3Dihub
N2 - The tightening of environmental standards in the EU including the presupposed abatement of coal combustion power plants presents an important impulse towards the transition to a circular economy. However, the achievement of this challenging goal requires a solution to a number of problems. One of the downstream problems consists in the fact that the application of fly ash originating in coal combustion (CFA) as a partial cement replacement might be gradually abandoned in future decades. The first reason may be economical as the increasing environmental regulations will probably result in its more costly processing. The second one is related to the increasing use of alternative energy sources which can lead to the decreasing availability of CFA. Biomass fly ash (BFA) originating from wood combustion can be considered as one of the prospective environmentally more friendly candidates for a partial replacement of CFA as supplementary cementitious material (SCM). In this paper, functional aspects of a possible replacement of CFA by BFA in blended cements are analyzed. Complex characterization of BFA performed prior to the other investigations reveals very good prerequisites for its use as SCM. The experimental analysis of functional properties of Portland cement-BFA based composites after 28-days curing shows the suitability of BFA as SCM for the cement replacement up to 30% by mass. The data collected after 90 and 180 days of curing indicate a substantial improvement of strength of all analyzed composites. The significantly lower content of hazardous elements in BFA in a comparison with CFA presents another benefit; it can be used in blended cements without any further processing or treatment.
ER -
FOŘT, Jan, Jiří ŠÁL, Radek ŠEVČÍK, Magdaléna DOLEŽELOVÁ, Martin KEPPERT, Miloš JERMAN, Martina ZÁLESKÁ, Vojtěch STEHEL a Robert ČERNÝ. Biomass fly ash as an alternative to coal fly ash in blended cements: Functional aspects. \textit{Construction and Building Materials}. Elsevier Ltd, 2020, Neuveden, č.~2020, s.~1 - 11. ISSN~0950-0618.
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