Characterization of alkali activated slag paste after exposure to high temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F13%3APU104375" target="_blank" >RIV/00216305:26110/13:PU104375 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2013.06.070" target="_blank" >http://dx.doi.org/10.1016/j.conbuildmat.2013.06.070</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2013.06.070" target="_blank" >10.1016/j.conbuildmat.2013.06.070</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of alkali activated slag paste after exposure to high temperatures

Popis výsledku v původním jazyce

The paper covers results on the study of microstructural changes of alkali activated granulated blast furnace slag exposed to high temperatures. Paste prepared from slag activated with solid sodium silicate glass was subjected to temperatures in the range of 200?1200 C for the period of 1 h. The microstructural changes caused by the heat were investigated by means of SEM, HT-XRD analysis and FTIR and MAS NMR spectroscopy. Based on the latter two methods, only partial dehydration and decomposition of C-A-S-H phase can be observed up to 600 C. The principle changes in microstucture of alkali activated slag occur between 600 and 800 C, when the dehydration of C-A-S-H phase is complete and new phases start to crystallize, among which akermanite is dominant. Such a significant phase transformation is reflected in the morphology, pore distribution, and mechanical properties of the AAS paste.

Název v anglickém jazyce

Characterization of alkali activated slag paste after exposure to high temperatures

Popis výsledku anglicky

The paper covers results on the study of microstructural changes of alkali activated granulated blast furnace slag exposed to high temperatures. Paste prepared from slag activated with solid sodium silicate glass was subjected to temperatures in the range of 200?1200 C for the period of 1 h. The microstructural changes caused by the heat were investigated by means of SEM, HT-XRD analysis and FTIR and MAS NMR spectroscopy. Based on the latter two methods, only partial dehydration and decomposition of C-A-S-H phase can be observed up to 600 C. The principle changes in microstucture of alkali activated slag occur between 600 and 800 C, when the dehydration of C-A-S-H phase is complete and new phases start to crystallize, among which akermanite is dominant. Such a significant phase transformation is reflected in the morphology, pore distribution, and mechanical properties of the AAS paste.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0097" target="_blank" >ED2.1.00/03.0097: AdMaS - Pokročilé stavební materiály, konstrukce a technologie</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Construction and building materials

ISSN

0950-0618

e-ISSN

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Svazek periodika

47

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

1479-1487

Kód UT WoS článku

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EID výsledku v databázi Scopus

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