The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU136324" target="_blank" >RIV/00216305:26110/19:PU136324 - isvavai.cz</a>

Výsledek na webu

<a href="http://wseas.org/wseas/cms.action?id=19909" target="_blank" >http://wseas.org/wseas/cms.action?id=19909</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite

Popis výsledku v původním jazyce

Autoclaved aerated concrete (AAC) is ecological building material with useful properties. The main mineral compound of AAC is tobermorite, it increases its mechanical properties. There is examined the usage of nature and artificial siliceous materials in this study. Main aim of the study is to demonstrate the influence of individual types of materials on the tobermorite creation and to determine optimal lime/silica ratio. First step of the research focuses on analysis of the used materials. In the second step on the creation of calcium hydrosilicate phases under ideal conditions (temperature of 190 °C, pressure of 1.3 MPa) of autoclave reactors (volume of 250 ml). The autoclaved samples are next analyzed by X-ray diffraction and scanning electron microscopy for qualitative evaluation of created mineral phases. The results show that the most suitable non-traditional silica component is coal fly ash. Fly ash has the optimal combination of amorphous and crystalline SiO 2 in combination with Al 2 O 3 . These properties provided the highest proportion of created tobermorite even in more energy-saving autoclaving mode.

Název v anglickém jazyce

The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite

Popis výsledku anglicky

Autoclaved aerated concrete (AAC) is ecological building material with useful properties. The main mineral compound of AAC is tobermorite, it increases its mechanical properties. There is examined the usage of nature and artificial siliceous materials in this study. Main aim of the study is to demonstrate the influence of individual types of materials on the tobermorite creation and to determine optimal lime/silica ratio. First step of the research focuses on analysis of the used materials. In the second step on the creation of calcium hydrosilicate phases under ideal conditions (temperature of 190 °C, pressure of 1.3 MPa) of autoclave reactors (volume of 250 ml). The autoclaved samples are next analyzed by X-ray diffraction and scanning electron microscopy for qualitative evaluation of created mineral phases. The results show that the most suitable non-traditional silica component is coal fly ash. Fly ash has the optimal combination of amorphous and crystalline SiO 2 in combination with Al 2 O 3 . These properties provided the highest proportion of created tobermorite even in more energy-saving autoclaving mode.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-14198S" target="_blank" >GA17-14198S: Kinetika tvorby mikrostruktury silikátů v závislosti na hydrotermálních podmínkách a typu vstupních surovin</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 periodika

WSEAS Journal Transactions on Environment and Development

ISSN

1790-5079

e-ISSN

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Svazek periodika

15

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

8

Strana od-do

57-64

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-85062236492