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BÍLEK, V. BÍLEK, V. KALINA, L. KHESTL, F. PALOVČÍK, J. ŠIMONOVÁ, H.
Originální název
Durability of alkali-activated concretes containing cement kiln by-pass dust
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
The aim of the presented work was evaluation of an effect of various conditions on the performance of two developed concretes based on alkali-activated slag and cement kiln by-pass dust (BD). BD was used as a partial replacement of natural aggregates while slag as an aluminosilicate precursor activated by a combination of waterglass and sodium hydroxide solution (resulting silicate modulus of 0.5). The concretes differed only in an activator dose which was 4 and 6% of Na2O with respect to the slag weight. The prepared specimens were sealed-cured for the first 28 days and then their resistance to freeze-thaw cycles and aggressive solutions (ammonium nitrate, acetic acid and sulphates) was tested. Evolution of dynamic modulus showed that both concretes resisted well to freeze-thaw cycles as well as to most solutions, where their dynamic modulus tended to increase in most cases or did not change significantly. Only the concrete with 4% Na2O showed poor resistance to acetic acid solution as the specimens completely disintegrated until 50 days.
Klíčová slova
alkali-activated slag; durability; freeze-thaw; acetic acid; ammonium nitrate; sulphate; activator dose
Autoři
BÍLEK, V.; BÍLEK, V.; KALINA, L.; KHESTL, F.; PALOVČÍK, J.; ŠIMONOVÁ, H.
Vydáno
18. 1. 2021
Nakladatel
IOP Publishing
ISSN
1757-8981
Periodikum
IOP Conference Series: Materials Science and Engineering
Ročník
1039
Stát
Spojené království Velké Británie a Severního Irska
Strany od
1
Strany do
8
Strany počet
URL
https://iopscience.iop.org/article/10.1088/1757-899X/1039/1/012012
Plný text v Digitální knihovně
http://hdl.handle.net/11012/201015
BibTex
@inproceedings{BUT171253, author="Vlastimil {Bílek} and Vlastimil {Bílek} and Lukáš {Kalina} and Filip {Khestl} and Jakub {Palovčík} and Hana {Šimonová}", title="Durability of alkali-activated concretes containing cement kiln by-pass dust", booktitle="International Conference Building Materials, Products and Technologies", year="2021", journal="IOP Conference Series: Materials Science and Engineering", volume="1039", pages="1--8", publisher="IOP Publishing", doi="10.1088/1757-899X/1039/1/012012", issn="1757-8981", url="https://iopscience.iop.org/article/10.1088/1757-899X/1039/1/012012" }