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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F05%3A00012365%21RIV10-MSM-14310___
rdf:type
skos:Concept n16:Vysledek
rdfs:seeAlso
www.acmcentre.com/cmmc
dcterms:description
Sulphate attack is one of several mechanisms of concrete deterioration. Laboratory imbibition experiments with sodium sulphate solution using samples of concrete from bridge constructions were done. Results of these experiments were obtained using chemical analysis of binder and theoretical calculation of concentrations of sodium and sulphate ions in the porous system. Further, electron microscopy and microanalysis was used to identify sulphates. The construction of theoretical curves of the chemical balance of ettringite and gypsum was done for reasons of modeling of partial conditions of crystallization of these minerals. The curves were constructed using a geochemical software PHREEQC for Windows. The experimental curves were compared to the real conditions of simultaneous crystallization of ettringite and gypsum. Sulphate attack is one of several mechanisms of concrete deterioration. Laboratory imbibition experiments with sodium sulphate solution using samples of concrete from bridge constructions were done. Results of these experiments were obtained using chemical analysis of binder and theoretical calculation of concentrations of sodium and sulphate ions in the porous system. Further, electron microscopy and microanalysis was used to identify sulphates. The construction of theoretical curves of the chemical balance of ettringite and gypsum was done for reasons of modeling of partial conditions of crystallization of these minerals. The curves were constructed using a geochemical software PHREEQC for Windows. The experimental curves were compared to the real conditions of simultaneous crystallization of ettringite and gypsum.
dcterms:title
Factors afecting formation on ettringite, thaumasite and gypsum in concrete Factors afecting formation on ettringite, thaumasite and gypsum in concrete
skos:prefLabel
Factors afecting formation on ettringite, thaumasite and gypsum in concrete Factors afecting formation on ettringite, thaumasite and gypsum in concrete
skos:notation
RIV/00216224:14310/05:00012365!RIV10-MSM-14310___
n3:aktivita
n14:Z n14:P
n3:aktivity
P(GA103/02/0990), Z(MSM0021622418)
n3:dodaniDat
n7:2010
n3:domaciTvurceVysledku
n17:8506310 n17:6396151
n3:druhVysledku
n19:A
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
521326
n3:idVysledku
RIV/00216224:14310/05:00012365
n3:jazykVysledku
n18:eng
n3:klicovaSlova
aggregate; chemical ballance; deterioration; ettringite; thaumasite; gypsum
n3:klicoveSlovo
n4:aggregate n4:chemical%20ballance n4:deterioration n4:gypsum n4:thaumasite n4:ettringite
n3:kodPristupu
n12:V
n3:kontrolniKodProRIV
[EFE228CE73F1]
n3:obor
n8:AH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n15:GA103%2F02%2F0990
n3:rokUplatneniVysledku
n7:2005
n3:tvurceVysledku
Gregerová, Miroslava Všianský, Dalibor
n3:zamer
n20:MSM0021622418
n6:organizacniJednotka
14310