Preparation of geopolymers based on ceramic waste products

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00335221" target="_blank" >RIV/68407700:21110/19:00335221 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2019/6.2/S26.030" target="_blank" >http://dx.doi.org/10.5593/sgem2019/6.2/S26.030</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2019/6.2/S26.030" target="_blank" >10.5593/sgem2019/6.2/S26.030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation of geopolymers based on ceramic waste products

Popis výsledku v původním jazyce

The production of red-clay hollow bricks belongs to the sources of industrial waste which gained on importance during the last decades. Although the amount of scrap is similar to the traditional red-clay bricks, the total waste generation is higher. As the current technologies of hollow brick production do not make it possible to provide sufficiently smooth and even surfaces, the brick blocks have to be ground after leaving the production line. This grinding generates a significant amount of waste powder containing both coarser and finer particles. The coarser fractions can be disposed of in the form of aggregate in concrete, as it is common for other types of ceramic waste. Finer fractions, which often possess pozzolanic activity, were reported to have a good potential as a partial replacement of cement in concrete. Using the ceramic waste powder instead of a part of cement is a solution more beneficial from an environmental point of view than its use as aggregate, as it contributes to a decrease of overall energy consumption and CO2 emission which accompanies the Portland cement production. In this paper, several geopolymer mixes are designed, using two different waste brick powders as precursors with a combination of water glass and sodium hydroxide as alkali activator. At first, the raw powders are subject of detailed material characterization experiments, including determination of chemical and mineralogical composition using X-ray fluorescence and X-ray diffraction methods. The development of microstructureof studied ceramic-based geopolymers is studied by means of scanning electronmicroscopy and mercury intrusion porosimetry. Then, their functional properties areassessed by the measurement of basic physical properties and mechanical parameters.Experimental results show satisfactory performance of all analyzed mixes which makesgood prerequisites for their practical application as an environmental friendly alternativeto cement-based materials.

Název v anglickém jazyce

Preparation of geopolymers based on ceramic waste products

Popis výsledku anglicky

The production of red-clay hollow bricks belongs to the sources of industrial waste which gained on importance during the last decades. Although the amount of scrap is similar to the traditional red-clay bricks, the total waste generation is higher. As the current technologies of hollow brick production do not make it possible to provide sufficiently smooth and even surfaces, the brick blocks have to be ground after leaving the production line. This grinding generates a significant amount of waste powder containing both coarser and finer particles. The coarser fractions can be disposed of in the form of aggregate in concrete, as it is common for other types of ceramic waste. Finer fractions, which often possess pozzolanic activity, were reported to have a good potential as a partial replacement of cement in concrete. Using the ceramic waste powder instead of a part of cement is a solution more beneficial from an environmental point of view than its use as aggregate, as it contributes to a decrease of overall energy consumption and CO2 emission which accompanies the Portland cement production. In this paper, several geopolymer mixes are designed, using two different waste brick powders as precursors with a combination of water glass and sodium hydroxide as alkali activator. At first, the raw powders are subject of detailed material characterization experiments, including determination of chemical and mineralogical composition using X-ray fluorescence and X-ray diffraction methods. The development of microstructureof studied ceramic-based geopolymers is studied by means of scanning electronmicroscopy and mercury intrusion porosimetry. Then, their functional properties areassessed by the measurement of basic physical properties and mechanical parameters.Experimental results show satisfactory performance of all analyzed mixes which makesgood prerequisites for their practical application as an environmental friendly alternativeto cement-based materials.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA19-01982S" target="_blank" >GA19-01982S: Alkalicky aktivované aluminosilikátové kompozity na bázi keramických prekurzorů</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

19th International Multidisciplinary Scientific Geoconference SGEM 2019

ISBN

978-619-7408-89-8

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

231-238

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

30. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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