PROPERTIES OF ALKALI-ACTIVATED FLY ASH WITH RESPECT TO THE SILICATE MODULUS OF ACTIVATOR

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

PROPERTIES OF ALKALI-ACTIVATED FLY ASH WITH RESPECT TO THE SILICATE MODULUS OF ACTIVATOR

Popis výsledku v původním jazyce

The effect of the silicate modulus of activator solutions in the synthesis of fly ash-based geopolymer on strength development and microstructure was investigated. The silicate modulus (Ms = SiO2/Na2O) of the activator solutions were 1.0, 1.3 and 1.6. Curing of the geopolymer was performed at ambient temperature. The silicate modulus of the activator had a significant effect on the final properties of the geopolymeric material. The products obtained were tested for compressive and flexural strength, apparent density, porosity and pore size distribution. The microstructure of the chosen specimens was examined by means of SEM and XRD analysis. The present study shows that compressive strength of samples increases with the decreasing silicate modulus of the activator solution. The compressive strength of the specimens prepared by mixing fly ash and 25 %wt. of the activator with Ms=1.0 was approximately 75 MPa after 360 days.

Název v anglickém jazyce

PROPERTIES OF ALKALI-ACTIVATED FLY ASH WITH RESPECT TO THE SILICATE MODULUS OF ACTIVATOR

Popis výsledku anglicky

The effect of the silicate modulus of activator solutions in the synthesis of fly ash-based geopolymer on strength development and microstructure was investigated. The silicate modulus (Ms = SiO2/Na2O) of the activator solutions were 1.0, 1.3 and 1.6. Curing of the geopolymer was performed at ambient temperature. The silicate modulus of the activator had a significant effect on the final properties of the geopolymeric material. The products obtained were tested for compressive and flexural strength, apparent density, porosity and pore size distribution. The microstructure of the chosen specimens was examined by means of SEM and XRD analysis. The present study shows that compressive strength of samples increases with the decreasing silicate modulus of the activator solution. The compressive strength of the specimens prepared by mixing fly ash and 25 %wt. of the activator with Ms=1.0 was approximately 75 MPa after 360 days.

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

Non-Traditional Cement and Concrete IV

ISBN

978-80-214-4301-3

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

139-147

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Brno

Datum konání akce

27. 6. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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