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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F11%3APU97403" target="_blank" >RIV/00216305:26110/11:PU97403 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
PROPERTIES OF ALKALI-ACTIVATED FLY ASH WITH RESPECT TO THE SILICATE MODULUS OF ACTIVATOR
Original language description
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.
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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