Publication 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

Type

journal article in Web of Science

Language

English

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.

Keywords

Alkali-activated slag, polyethylene glycol, leaching, surface tension

Authors

BÍLEK, V.; KALINA, L.; BARTONÍČKOVÁ, E.; POŘÍZKA, J.

Released

1. 2. 2019

Publisher

Institute of Metals and Technology

Location

Ljubljana, Slovenia

ISBN

1580-2949

Periodical

Materiali in tehnologije

Year of study

53

Number

1

State

Republic of Slovenia

Pages from

33

Pages to

38

Pages count

6

URL

http://mit.imt.si/Revija/izvodi/mit191/bilek.pdf

Full text in the Digital Library

http://hdl.handle.net/11012/137966

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"
}