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Statements

Subject Item
n2:RIV%2F00216305%3A26110%2F10%3APU89023%21RIV11-GA0-26110___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
Geopolymer material based on coal fly ash from the high temperature combustion activated with alkali silicate is a very cheap and suitable material for temporary and non-load-bearing structures. For the purposes of emergency application, such as closing barriers, it is necessary to have dry mixtures ready for mixing with water. However, the utilization of dried sodium silicate activator instead of an aqueous solution considerably delays its setting. The application of C12A7 accelerates the setting of alkali activated fly ash, but it also influences its mechanical properties. Early-age strengths are increased, the long term strengths are, however, deteriorated in comparison with the pure material without C12A7. Microstructural changes are described by means of mercury intrusion porosimetry, SEM, XRD and FTIR analysis. Geopolymer material based on coal fly ash from the high temperature combustion activated with alkali silicate is a very cheap and suitable material for temporary and non-load-bearing structures. For the purposes of emergency application, such as closing barriers, it is necessary to have dry mixtures ready for mixing with water. However, the utilization of dried sodium silicate activator instead of an aqueous solution considerably delays its setting. The application of C12A7 accelerates the setting of alkali activated fly ash, but it also influences its mechanical properties. Early-age strengths are increased, the long term strengths are, however, deteriorated in comparison with the pure material without C12A7. Microstructural changes are described by means of mercury intrusion porosimetry, SEM, XRD and FTIR analysis.
dcterms:title
INFLUENCE OF C12A7 ADMIXTURE ON SETTING PROPERTIES OF FLY ASH GEOPOLYMER INFLUENCE OF C12A7 ADMIXTURE ON SETTING PROPERTIES OF FLY ASH GEOPOLYMER
skos:prefLabel
INFLUENCE OF C12A7 ADMIXTURE ON SETTING PROPERTIES OF FLY ASH GEOPOLYMER INFLUENCE OF C12A7 ADMIXTURE ON SETTING PROPERTIES OF FLY ASH GEOPOLYMER
skos:notation
RIV/00216305:26110/10:PU89023!RIV11-GA0-26110___
n3:aktivita
n11:Z n11:P
n3:aktivity
P(GP103/08/P270), Z(MSM0021630511)
n3:cisloPeriodika
4
n3:dodaniDat
n9:2011
n3:domaciTvurceVysledku
n17:6503918
n3:druhVysledku
n18:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
263601
n3:idVysledku
RIV/00216305:26110/10:PU89023
n3:jazykVysledku
n19:eng
n3:klicovaSlova
fly ash, alkali activation, setting accelerator, mayenite
n3:klicoveSlovo
n4:setting%20accelerator n4:mayenite n4:alkali%20activation n4:fly%20ash
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[9F592908311C]
n3:nazevZdroje
Ceramics-Silikáty
n3:obor
n13:JN
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
1
n3:projekt
n14:GP103%2F08%2FP270
n3:rokUplatneniVysledku
n9:2010
n3:svazekPeriodika
54
n3:tvurceVysledku
Rovnaník, Pavel
n3:zamer
n16:MSM0021630511
s:issn
0862-5468
s:numberOfPages
6
n12:organizacniJednotka
26110