Detail publikačního výsledku
Durability of alkali-activated concretes containing cement kiln by-pass dust
BÍLEK, V.; BÍLEK, V.; KALINA, L.; KHESTL, F.; PALOVČÍK, J.; ŠIMONOVÁ, H.
Original Title
Durability of alkali-activated concretes containing cement kiln by-pass dust
English Title
Durability of alkali-activated concretes containing cement kiln by-pass dust
Type
Paper in proceedings (conference paper)
Original Abstract
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.
English abstract
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.
Keywords
alkali-activated slag; durability; freeze-thaw; acetic acid; ammonium nitrate; sulphate; activator dose
Key words in English
alkali-activated slag; durability; freeze-thaw; acetic acid; ammonium nitrate; sulphate; activator dose
Authors
BÍLEK, V.; BÍLEK, V.; KALINA, L.; KHESTL, F.; PALOVČÍK, J.; ŠIMONOVÁ, H.
RIV year
2021
Released
18.01.2021
Publisher
IOP Publishing
Book
International Conference Building Materials, Products and Technologies
ISBN
1757-8981
Periodical
IOP Conference Series: Materials Science and Engineering
Volume
1039
State
United Kingdom of Great Britain and Northern Ireland
Pages from
1
Pages to
8
Pages count
8
URL
Full text in the Digital Library
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"
}Documents