Publication detail

Comparison of Testing Methods for Evaluating the Resistance of Alkali-Activated Blast Furnace Slag Systems to Sulfur Dioxide

HRUBÝ, P. KALINA, L. BÍLEK, V. KEPRDOVÁ, Š. MÁSILKO, J. PLŠKOVÁ, I. KOPLÍK, J. TOPOLÁŘ, L.

Original Title

Comparison of Testing Methods for Evaluating the Resistance of Alkali-Activated Blast Furnace Slag Systems to Sulfur Dioxide

Type

journal article in Web of Science

Language

English

Original Abstract

Alkali-activated systems (AAS) represent an ecologically and economically sustainable inorganic binder as an alternative to ordinary Portland cement (OPC). One of the main benefits of AAS is their durability in aggressive environments, which can be equal or even better than that of OPC. In this paper, the influence of the type of alkaline activator in alkali-activated blast furnace slag (AAS) in terms of resistance to sulfur dioxide corrosion was investigated. The durability testing process was based on the CSN EN ISO 3231 standard and simultaneously compared with mortar samples prepared by using Blastfurnace cement CEM III/A 32.5R. The degradation progress was evaluated by employing several different methods such as observing the compressive strength development, weight change evaluation, non-destructive testing methods like ultrasound or impact echo technique, or visual phenolphthalein technique. Subsequently, fundamental characterization of samples by the XRD method was performed during the degradation test. The obtained results indicate that none of the testing methods used could be prioritized over others to determine the resistance of AAS against the action of sulfur dioxide. For this reason, the durability testing of AAS remains an issue, and the development of specific standards considering the behavior of AAS seems necessary.

Keywords

alkaline activation; blast furnace slag; sulfur dioxide; corrosion resistance; non-destructive testing; degradation characterization

Authors

HRUBÝ, P.; KALINA, L.; BÍLEK, V.; KEPRDOVÁ, Š.; MÁSILKO, J.; PLŠKOVÁ, I.; KOPLÍK, J.; TOPOLÁŘ, L.

Released

11. 2. 2022

Publisher

MDPI

Location

Basel, Switzerland

ISBN

1996-1944

Periodical

Materials

Year of study

15

Number

4

State

Swiss Confederation

Pages from

1

Pages to

16

Pages count

16

URL

https://www.mdpi.com/1996-1944/15/4/1344

Full text in the Digital Library

http://hdl.handle.net/11012/203934

BibTex

@article{BUT176695,
  author="Petr {Hrubý} and Lukáš {Kalina} and Vlastimil {Bílek} and Šárka {Keprdová} and Jiří {Másilko} and Iveta {Plšková} and Jan {Koplík} and Libor {Topolář}",
  title="Comparison of Testing Methods for Evaluating the Resistance of Alkali-Activated Blast Furnace Slag Systems to Sulfur Dioxide",
  journal="Materials",
  year="2022",
  volume="15",
  number="4",
  pages="1--16",
  doi="10.3390/ma15041344",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/15/4/1344"
}