Publication result detail
Evaluation of the Surfactant Leaching from Alkali-Activated Slag-Based Composites Using Surface-Tension Measurements
BÍLEK, V.; KALINA, L.; BARTONÍČKOVÁ, E.; POŘÍZKA, J.
Original Title
Evaluation of the Surfactant Leaching from Alkali-Activated Slag-Based Composites Using Surface-Tension Measurements
English Title
Evaluation of the Surfactant Leaching from Alkali-Activated Slag-Based Composites Using Surface-Tension Measurements
Type
WoS Article
Original Abstract
This work tries to evaluatethe amount of surfactant leached from the AAS-based mortars using a very simple surface-tension (ST) measuring technique.Mortars based on AAS with and without2%ofPEGvarying in molecular weight (MW) were prepared. Waterglass with aSiO2-to-Na2O ratio equal to 2.0 was used at a dose corresponding to8%Na2O with respect to the slag weight. Mortarspecimens were prepared and sealed for 24 h, 3 d and 7 d. Then they were demolded and immersed in demineralized water,whose ST was monitored over time. During the early stages (from minutes to a few hours) the ST dropped rapidly, while itremained approximately constant after a few days, which indicates that organic molecules are leached from the AAS specimensvery quickly. It was observed that a relatively small fraction of PEGs can be leached out, which indicates that organic moleculesare rather bound in the matrix, unable to reduce the ST of the pore solution.
English abstract
This work tries to evaluatethe amount of surfactant leached from the AAS-based mortars using a very simple surface-tension (ST) measuring technique.Mortars based on AAS with and without2%ofPEGvarying in molecular weight (MW) were prepared. Waterglass with aSiO2-to-Na2O ratio equal to 2.0 was used at a dose corresponding to8%Na2O with respect to the slag weight. Mortarspecimens were prepared and sealed for 24 h, 3 d and 7 d. Then they were demolded and immersed in demineralized water,whose ST was monitored over time. During the early stages (from minutes to a few hours) the ST dropped rapidly, while itremained approximately constant after a few days, which indicates that organic molecules are leached from the AAS specimensvery quickly. It was observed that a relatively small fraction of PEGs can be leached out, which indicates that organic moleculesare rather bound in the matrix, unable to reduce the ST of the pore solution.
Keywords
Alkali-activated slag, polyethylene glycol, leaching, surface tension
Key words in English
Alkali-activated slag, polyethylene glycol, leaching, surface tension
Authors
BÍLEK, V.; KALINA, L.; BARTONÍČKOVÁ, E.; POŘÍZKA, J.
RIV year
2019
Released
01.02.2019
Publisher
Institute of Metals and Technology
Location
Ljubljana, Slovenia
ISBN
1580-2949
Periodical
Materiali in Tehnologije
Volume
53
Number
1
State
Republic of Slovenia
Pages from
33
Pages to
38
Pages count
6
URL
Full text in the Digital Library
BibTex
@article{BUT155606,
author="Vlastimil {Bílek} and Lukáš {Kalina} and Eva {Bartoníčková} and Jaromír {Pořízka}",
title="Evaluation of the Surfactant Leaching from Alkali-Activated Slag-Based Composites Using Surface-Tension Measurements",
journal="Materiali in Tehnologije",
year="2019",
volume="53",
number="1",
pages="33--38",
doi="10.17222/mit.2018.148",
issn="1580-2949",
url="http://mit.imt.si/Revija/izvodi/mit191/bilek.pdf"
}Documents