Method for the Accelerated Testing of the Durability of a Construction Binder using the Arrhenius Approach

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dc.contributor.authorFridrichová, Marcelacs
dc.contributor.authorDvořák, Karelcs
dc.contributor.authorGazdič, Dominikcs
dc.coverage.issue1cs
dc.coverage.volume24cs
dc.date.accessioned2021-12-09T11:54:16Z
dc.date.available2021-12-09T11:54:16Z
dc.date.issued2016-05-02cs
dc.description.abstractThe single most reliable indicator of a material’s durability is its performance in long-term tests, which cannot always be carried out due to a limited time budget. The second option is to perform some kind of accelerated durability tests. The aim of the work described in this article was to develop a method for the accelerated durability testing of binders. It was decided that the Arrhenius equation approach and the theory of chemical reaction kinetics would be applied in this case. The degradation process has been simplified to a single quantifiable parameter, which became compressive strength. A model hydraulic binder based on fluidised bed combustion ash (FBC ash) was chosen as the test subject for the development of the method. The model binder and its hydration products were tested by high-temperature X-ray diffraction analysis. The main hydration product of this binder was ettringite. Due to the thermodynamic instability of this mineral, it was possible to verify the proposed method via long term testing. In order to accelerate the chemical reactions in the binder, four combinations of two temperatures (65 and 85°C) and two different relative humidities (14 and 100%) were used. The upper temperature limit was chosen because of the results of the high-temperature x-ray testing of the ettringite’s decomposition. The calculation formulae for the accelerated durability tests were derived on the basis of data regarding the decrease in compressive strength under the conditions imposed by the four above-mentioned combinations. The mineralogical composition of the binder after degradation was also described. The final degradation product was gypsum under dry conditions and monosulphate under wet conditions. The validity of the method and formula was subsequently verified by means of long-term testing. A very good correspondence between the calculated and real values was achieved. The deviation of these values did not exceed 5 %. The designed and verified method does not also consider the influence of other effects, for instance, chemical corrosion or corrosion caused by frost-thaw cycles. However, this method could be a supplementary tool applicable to the study of degradation processes and the estimation of a binder´s durability as well.en
dc.description.abstractJeden z nejspolehlivějších ukazatelů trvanlivosti materiálu jsou jeho vlastnosti v dlouhodobých testech, které ale nemohou být vždy provedeny kvůli časovému omezení. Druhou možností je provést zrychlené testy trvanlivosti. Cílem práce popsané v tomto článku bylo vyvinout metodu pro zrychlené testování trvanlivosti pojiv. Byl zvolen přístup založený na Arrheniově rovnici a teorii chemické reakční kinetiky.cs
dc.formattextcs
dc.format.extent24-33cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationSlovak Journal of Civil Emgineering. 2016, vol. 24, issue 1, p. 24-33.en
dc.identifier.doi10.1515/sjce-2016-0004cs
dc.identifier.issn1210-3896cs
dc.identifier.other124981cs
dc.identifier.urihttp://hdl.handle.net/11012/203133
dc.language.isoencs
dc.publisherDe Gruytercs
dc.relation.ispartofSlovak Journal of Civil Emgineeringcs
dc.relation.urihttp://www.degruyter.com/view/j/sjce.2016.24.issue-1/sjce-2016-0004/sjce-2016-0004.xml?format=INTcs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1210-3896/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectArrhenius approachen
dc.subjectAccelerated testingen
dc.subjectDurabilityen
dc.subjectHydraulic bindersen
dc.subjectHydrationen
dc.subjectArrheniovský přístup
dc.subjectzrychlené testování
dc.subjecttrvanlivost
dc.subjecthydraulická pojiva
dc.subjecthydratace
dc.titleMethod for the Accelerated Testing of the Durability of a Construction Binder using the Arrhenius Approachen
dc.title.alternativeMetoda zkrácených zkoušek trvanlivosti stavebních pojiv založená na Arheniovském přístupucs
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-124981en
sync.item.dbtypeVAVen
sync.item.insts2021.12.09 12:54:16en
sync.item.modts2021.12.09 12:14:10en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav technologie stavebních hmot a dílcůcs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. AdMaS Divize MSHcs
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