Detail publikace

Effect of organic additives on shrinkage of AAS mortars

MIKHAILOVA, O. ROVNANÍK, P.

Originální název

Effect of organic additives on shrinkage of AAS mortars

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Alkali-activated slag binders have many advantages such as mechanical performance, durability and chemical resistance compared to ordinary Portland cement. However, they also have disadvantages such as increased shrinkage followed by the formation of microcracks. This paper presents the effect of shrinkage-reducing admixture Peramin SRA 40, polymer polyethylene glycol 1000 and polypropylene glycol on shrinkage and mechanical characteristics of alkali-activated slag concrete. These admixtures were used in different dosages in the range of 0–2.0% by mass of the slag. The results show that with increasing content of admixtures compressive and flexural strengths decreased. On the other hand, promising results in respect of shrinkage reduction were obtained particularly for polypropylene glycol where it reduced linear shrinkage of the reference mortar by up to 70%. The minimum decline of shrinkage was observed for 1% of Peramin SRA 40.

Klíčová slova

alkali-activated slag; shrinkage; organic additives; porosity

Autoři

MIKHAILOVA, O.; ROVNANÍK, P.

Vydáno

29. 1. 2016

Nakladatel

Brno University of Technology and CNDT

Místo

Brno

ISBN

978-80-214-5315-9

Kniha

NDT konference v České republice 2015

Číslo edice

první

Strany od

25

Strany do

30

Strany počet

5

BibTex

@inproceedings{BUT126510,
  author="Olesia {Mikhailova} and Pavel {Rovnaník}",
  title="Effect of organic additives on shrinkage of AAS mortars",
  booktitle="NDT konference v České republice 2015",
  year="2016",
  number="první",
  pages="25--30",
  publisher="Brno University of Technology and CNDT",
  address="Brno",
  isbn="978-80-214-5315-9"
}