Monitoring the effect of quartz-sand replacement by amorphous-silica raw material on the microstructure of calcium silicate composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU135068" target="_blank" >RIV/00216305:26110/20:PU135068 - isvavai.cz</a>

Výsledek na webu

<a href="http://mit.imt.si/izvodi/mit201/hustatova.pdf" target="_blank" >http://mit.imt.si/izvodi/mit201/hustatova.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2019.191" target="_blank" >10.17222/mit.2019.191</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Monitoring the effect of quartz-sand replacement by amorphous-silica raw material on the microstructure of calcium silicate composites

Popis výsledku v původním jazyce

Quartz sand is the main raw material for the production, of autoclaved calcium silicate composites. However, its resources are rapidly dwindling, and alternative siliceous raw materials need to be sought and tested for replacement. Most often they are raw materials containing amorphous silica. Amorphous silica is more readily soluble than crystalline silica, and thus may contribute to the formation of a superior microstructure of the calcium silicate composite through calcium hydrate phases. This paper is focused on determining the optimal replacement rate of amorphous silica raw material for crystalline silica sand, while describing changes in microstructure of calcium silicate composites. The replacement rate was graded to 0%, 25%, 50%, 75% and 100%. Hydrothermal treatment conditions are based on the real production of autoclaved aerated concrete, so a temperature of 190°C and an isothermal holding time of 7 hours was chosen. To study the effect of the ratio of raw materials on microstructure, X-ray diffraction analysis supported by scanning electron microscopy images was used.

Název v anglickém jazyce

Monitoring the effect of quartz-sand replacement by amorphous-silica raw material on the microstructure of calcium silicate composites

Popis výsledku anglicky

Quartz sand is the main raw material for the production, of autoclaved calcium silicate composites. However, its resources are rapidly dwindling, and alternative siliceous raw materials need to be sought and tested for replacement. Most often they are raw materials containing amorphous silica. Amorphous silica is more readily soluble than crystalline silica, and thus may contribute to the formation of a superior microstructure of the calcium silicate composite through calcium hydrate phases. This paper is focused on determining the optimal replacement rate of amorphous silica raw material for crystalline silica sand, while describing changes in microstructure of calcium silicate composites. The replacement rate was graded to 0%, 25%, 50%, 75% and 100%. Hydrothermal treatment conditions are based on the real production of autoclaved aerated concrete, so a temperature of 190°C and an isothermal holding time of 7 hours was chosen. To study the effect of the ratio of raw materials on microstructure, X-ray diffraction analysis supported by scanning electron microscopy images was used.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

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

2020

Kód důvěrnosti údajů

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

Název periodika

Materiali in tehnologije

ISSN

1580-2949

e-ISSN

1580-3414

Svazek periodika

54

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

6

Strana od-do

129-134

Kód UT WoS článku

000536656900020

EID výsledku v databázi Scopus

2-s2.0-85081657755