Publication detail

Polyethylene glycol molecular weight as an important parameter affecting drying shrinkage and hydration of alkali-activated slag mortars and pastes

BÍLEK Jr., V. KALINA, L. NOVOTNÝ, R.

Original Title

Polyethylene glycol molecular weight as an important parameter affecting drying shrinkage and hydration of alkali-activated slag mortars and pastes

Type

journal article in Web of Science

Language

English

Original Abstract

The aim of this study was to explore the influence of ethylene glycol in a wide range of polymerization degree, i.e. from monomer (EG) up to polyethylene glycol (PEG) with molecular weight of about 35,000, on properties of alkali-activated slag mortars. Changes in molecular weight and dose of all tested glycols had only minor effect on compressive strength, while drying shrinkage was significantly affected by both these factors. EG had negligible impact on drying shrinkage, but other tested glycols reduced it significantly with PEG2000 and PEG10000 being the most effective. Such different shrinkage behavior was attributed to the changes in surface tension and pore structure. All tested glycols reduced the total heat released during the hydration and interestingly modified the heat flow depending on their molecular weight.

Keywords

Alkali-activated slag; Polyethylene glycol; Molecular weight; Shrinkage ;Hydration; Strength; Porosity; Surface tension

Authors

BÍLEK Jr., V.; KALINA, L.; NOVOTNÝ, R.

Released

22. 2. 2018

ISBN

0950-0618

Periodical

Construction and building materials

Year of study

166

Number

–

State

United Kingdom of Great Britain and Northern Ireland

Pages from

564

Pages to

571

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S0950061818302009

BibTex

@article{BUT146169,
  author="Vlastimil {Bílek} and Lukáš {Kalina} and Radoslav {Novotný}",
  title="Polyethylene glycol molecular weight as an important parameter affecting drying shrinkage and hydration of alkali-activated slag mortars and pastes",
  journal="Construction and building materials",
  year="2018",
  volume="166",
  number="–",
  pages="564--571",
  doi="10.1016/j.conbuildmat.2018.01.176",
  issn="0950-0618",
  url="https://www.sciencedirect.com/science/article/pii/S0950061818302009"
}