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NÁPRAVNÍK, P. LISZTWAN, D. DANĚK, P. KUCHARCZYKOVÁ, B.
Originální název
Experimental Determination of the Coefficient of Thermal Expansion of Hardened Alkali-Activated Slag Pastes
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
This paper presents the results of an experimental determination of the coefficient of thermal expansion of hardened alkali-activated slag pastes. In the experiment, three different activators were used – liquid sodium silicate, sodium carbonate and sodium hydroxide. The slag volume fraction for all paste types was set to 0.52. The specimens’ internal moisture content and shrinkage strains were plateaued at ambient laboratory conditions (temperature = 22 ± 2 °C, relative humidity = 55 ± 5 %) at the testing time. All of the specimens were wrapped into the polyethylene foil before the start of thermal dilation measurements and stored in the Q-Cell incubator in which they were subjected to temperature cycling from 5 °C to 30 °C. Length changes caused by the temperature changes were measured with dilatometers supplemented by continuous strain gauges measurement. The results show different values of the coefficient of thermal expansion depending on the activator type. Moreover, the strains recorded by the dilatometer through the steel pins embedded into the ends of specimens and by the strain gauges placed in the core of the test specimens led to different resulting values of the coefficient of thermal expansion.
Klíčová slova
coefficient of thermal expansion, alkali-activated slag, paste, liquid sodium silicate, sodium carbonate, sodium hydroxide
Autoři
NÁPRAVNÍK, P.; LISZTWAN, D.; DANĚK, P.; KUCHARCZYKOVÁ, B.
Vydáno
29. 3. 2024
Nakladatel
Trans Tech Publications Ltd.
Místo
Švýcarsko
ISBN
9783035737189
Kniha
7th Non-Traditional Cement and Concrete
ISSN
1662-0356
Periodikum
Advances in Science and Technology
Ročník
145
Stát
Švýcarská konfederace
Strany od
19
Strany do
27
Strany počet
9
URL
https://www.scientific.net/AST.145.19
BibTex
@inproceedings{BUT187450, author="Petr {Nápravník} and Dominik {Lisztwan} and Petr {Daněk} and Barbara {Kucharczyková}", title="Experimental Determination of the Coefficient of Thermal Expansion of Hardened Alkali-Activated Slag Pastes", booktitle="7th Non-Traditional Cement and Concrete", year="2024", journal="Advances in Science and Technology", volume="145", pages="19--27", publisher="Trans Tech Publications Ltd.", address="Švýcarsko", doi="10.4028/p-JCz5Ob", isbn="9783035737189", issn="1662-0356", url="https://www.scientific.net/AST.145.19" }