Valorization of freshwater sediments through thermal treatment for alkali activation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00370900" target="_blank" >RIV/68407700:21110/23:00370900 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0146717" target="_blank" >https://doi.org/10.1063/5.0146717</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0146717" target="_blank" >10.1063/5.0146717</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Valorization of freshwater sediments through thermal treatment for alkali activation

Popis výsledku v původním jazyce

The construction industry is currently struggling with a shortage of primary raw materials that are needed for buildings, road construction in particular. Taking into account the availability issues, dredging operations in river bands, dams, and lakes associated with a big volume of excavated sediments represent a very interesting precursor source for the alkali-activated materials (AAMs) production. However, despite the good availability and favorable chemical composition, the alkali activation of WS was studied only rarely. This study investigates the potential of dredged freshwater sediments as alkali-activation precursors through elevated temperature exposure. The reactive amorphous phase content is increased by treatment at 800 °C and changes in the mineralogical composition are evaluated. The suitability of freshwater sediments as construction materials is accessed by the determination of the mechanical strength. The obtained results reveal, that the utilization of thermogravimetry can be viewed as an effective tool for the determination of optimal temperature treatment. Achieved values of compressive and flexural strength point to the potential of this material as the construction material, notwithstanding, follow-up research is required to increase the mechanical performance through mixtures optimization.

Název v anglickém jazyce

Valorization of freshwater sediments through thermal treatment for alkali activation

Popis výsledku anglicky

The construction industry is currently struggling with a shortage of primary raw materials that are needed for buildings, road construction in particular. Taking into account the availability issues, dredging operations in river bands, dams, and lakes associated with a big volume of excavated sediments represent a very interesting precursor source for the alkali-activated materials (AAMs) production. However, despite the good availability and favorable chemical composition, the alkali activation of WS was studied only rarely. This study investigates the potential of dredged freshwater sediments as alkali-activation precursors through elevated temperature exposure. The reactive amorphous phase content is increased by treatment at 800 °C and changes in the mineralogical composition are evaluated. The suitability of freshwater sediments as construction materials is accessed by the determination of the mechanical strength. The obtained results reveal, that the utilization of thermogravimetry can be viewed as an effective tool for the determination of optimal temperature treatment. Achieved values of compressive and flexural strength point to the potential of this material as the construction material, notwithstanding, follow-up research is required to increase the mechanical performance through mixtures optimization.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA22-04726S" target="_blank" >GA22-04726S: Zhodnocení sladkovodních sedimentů pomocí alkalické aktivace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Central European Symposium on Thermophysics 2022 (CEST 2022)

ISBN

—

ISSN

1551-7616

e-ISSN

1551-7616

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

AIP Conference Proceedings

Místo vydání

New York

Místo konání akce

Olomouc

Datum konání akce

31. 8. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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