Application of concrete slurry waste in cement screeds
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00336627" target="_blank" >RIV/68407700:21110/19:00336627 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.3846/mbmst.2019.072" target="_blank" >http://dx.doi.org/10.3846/mbmst.2019.072</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3846/mbmst.2019.072" target="_blank" >10.3846/mbmst.2019.072</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Application of concrete slurry waste in cement screeds
Popis výsledku v původním jazyce
Sedimented concrete slurry waste (CSW), containing cement, mineral additives, fine fillers, admixtures and water, is currently a waste without an additional use and has to be fully landfilled. Current CSW management is very expensive and introduces number of environmental risks due to its high pH, exceeding 11.5. This paper deals with the application of two types of CSW as cement replacement in cement screed. The evaluation was carried out in terms of workability and basic mechanical performance of the obtained composites. The applied cement replacement was up to 10 wt.% due to the negative impact on the rheology of fresh mixtures. Reduced workability consequently caused higher content of air in the fresh mixture. It was reflected by lower values of bulk density in hardened state for both studied CSW. These aspects were the reasons of decreased mechanical performance by approximately 15% per 5 wt.% of replacement. Conducted experimental program declared significant limits of CSW application in cement based composites, however additional processing of CSW could significantly modify its properties.
Název v anglickém jazyce
Application of concrete slurry waste in cement screeds
Popis výsledku anglicky
Sedimented concrete slurry waste (CSW), containing cement, mineral additives, fine fillers, admixtures and water, is currently a waste without an additional use and has to be fully landfilled. Current CSW management is very expensive and introduces number of environmental risks due to its high pH, exceeding 11.5. This paper deals with the application of two types of CSW as cement replacement in cement screed. The evaluation was carried out in terms of workability and basic mechanical performance of the obtained composites. The applied cement replacement was up to 10 wt.% due to the negative impact on the rheology of fresh mixtures. Reduced workability consequently caused higher content of air in the fresh mixture. It was reflected by lower values of bulk density in hardened state for both studied CSW. These aspects were the reasons of decreased mechanical performance by approximately 15% per 5 wt.% of replacement. Conducted experimental program declared significant limits of CSW application in cement based composites, however additional processing of CSW could significantly modify its properties.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GA19-11027S" target="_blank" >GA19-11027S: Betonárenský kal - nebezpečný odpad nebo druhotná surovina?</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
MODERN BUILDING MATERIALS, STRUCTURES AND TECHNIQUES MBMST 2019
ISBN
978-609-476-197-3
ISSN
—
e-ISSN
2029-9915
Počet stran výsledku
6
Strana od-do
140-145
Název nakladatele
VGTU Press
Místo vydání
—
Místo konání akce
Vilnius
Datum konání akce
16. 5. 2019
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—