Effect of water removal techniques on the composition of gypsum-based composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00375247" target="_blank" >RIV/68407700:21110/24:00375247 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/5.0193109" target="_blank" >http://dx.doi.org/10.1063/5.0193109</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0193109" target="_blank" >10.1063/5.0193109</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of water removal techniques on the composition of gypsum-based composites

Popis výsledku v původním jazyce

Green building materials have received increasing attention in recent years since they represent promising solutions on the path to achieving carbon neutrality in the civil engineering sector. One of the possibilities to decrease CO2 emissions from cement production is to avoid its use altogether and develop cement-free materials. Gypsum-based composites have the potential to play an important role in the market with building materials in the future. Nevertheless, their main disadvantage remains their low strength and poor water resistance, limiting their wider use. Moreover, water (physically and chemically bound) defines the performance and properties of such materials. Additionally, most of the analytical techniques require dried samples before analysis, which needs to be done, especially in the case of gypsum-based materials gently. This paper evaluates the effects of two different water removal techniques, namely direct drying and immersion in isopropanol, on the composition of gypsum-based materials consisting of gypsum, lime, and ceramic waste, with the help of scanning electron microscopy and mercury intrusion porosimetry. The amount of the released water from the studied samples was quantified, and the efficiency of the methods was compared. It was found that whereas the selected drying method had only negligible impact on the morphology and porosity refinement of the studied gypsum-based composites, a more significant amount of water from the samples was removed using immersion of the samples in isopropanol compared to direct drying at 50 °C, especially in the samples containing the highest amount of pozzolana active ceramic waste and lime.

Název v anglickém jazyce

Effect of water removal techniques on the composition of gypsum-based composites

Popis výsledku anglicky

Green building materials have received increasing attention in recent years since they represent promising solutions on the path to achieving carbon neutrality in the civil engineering sector. One of the possibilities to decrease CO2 emissions from cement production is to avoid its use altogether and develop cement-free materials. Gypsum-based composites have the potential to play an important role in the market with building materials in the future. Nevertheless, their main disadvantage remains their low strength and poor water resistance, limiting their wider use. Moreover, water (physically and chemically bound) defines the performance and properties of such materials. Additionally, most of the analytical techniques require dried samples before analysis, which needs to be done, especially in the case of gypsum-based materials gently. This paper evaluates the effects of two different water removal techniques, namely direct drying and immersion in isopropanol, on the composition of gypsum-based materials consisting of gypsum, lime, and ceramic waste, with the help of scanning electron microscopy and mercury intrusion porosimetry. The amount of the released water from the studied samples was quantified, and the efficiency of the methods was compared. It was found that whereas the selected drying method had only negligible impact on the morphology and porosity refinement of the studied gypsum-based composites, a more significant amount of water from the samples was removed using immersion of the samples in isopropanol compared to direct drying at 50 °C, especially in the samples containing the highest amount of pozzolana active ceramic waste and lime.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/GA20-14506S" target="_blank" >GA20-14506S: Metody pro zastavení hydratace cementu, vápna a sádry</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the International Conference of Computational Methods in Sciences and Engineering 2022 (ICCMSE-2022)

ISBN

978-0-7354-4839-1

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

AIP Publishing, APL, the American Institute of Physics

Místo vydání

Melville, NY

Místo konání akce

Heraklion

Datum konání akce

26. 10. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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