Publication detail

Influence of Chemical Additives and Curing Conditions on Mechanical Properties and Carbonation Resistance of Alkali Activated Slag Composites

BULEJKO, P. BÍLEK, V.

Original Title

Influence of Chemical Additives and Curing Conditions on Mechanical Properties and Carbonation Resistance of Alkali Activated Slag Composites

English Title

Influence of Chemical Additives and Curing Conditions on Mechanical Properties and Carbonation Resistance of Alkali Activated Slag Composites

Type

abstract

Language

en

Original Abstract

The main aim of the presented work is to investigate the effect of the addition of air entraining (AEA) and shrinkage reducing agents (SRA) on mechanical properties and carbonation resistance of alkali activated slag (AAS). Materials for the sample preparation were blast furnace slag activated using sodium silicate and AEA or SRA varying in content. Curing of samples was carried out in various conditions (air curing at laboratory conditions and water curing at the same temperature) and influence of these was studied too. The prepared samples (specimens with dimensions of 100 mm × 20 mm × 20 mm) where tested on compressive and bending strengths. The experimental results have shown that the addition of AEA had not significant influence on the mechanical properties while the addition of SRA had negative effect. However, the carbonation resistance markedly decreases with increasing amount of both agents. The same stands for the air curing as mechanical strengths are lower compared to those cured in water and the ratio of strength of the air cured composite and that of water cured one decreases with increasing content of SRA.

English abstract

The main aim of the presented work is to investigate the effect of the addition of air entraining (AEA) and shrinkage reducing agents (SRA) on mechanical properties and carbonation resistance of alkali activated slag (AAS). Materials for the sample preparation were blast furnace slag activated using sodium silicate and AEA or SRA varying in content. Curing of samples was carried out in various conditions (air curing at laboratory conditions and water curing at the same temperature) and influence of these was studied too. The prepared samples (specimens with dimensions of 100 mm × 20 mm × 20 mm) where tested on compressive and bending strengths. The experimental results have shown that the addition of AEA had not significant influence on the mechanical properties while the addition of SRA had negative effect. However, the carbonation resistance markedly decreases with increasing amount of both agents. The same stands for the air curing as mechanical strengths are lower compared to those cured in water and the ratio of strength of the air cured composite and that of water cured one decreases with increasing content of SRA.

Keywords

Alkali-activated slag, carbonation resistance, chemical additives, mechanical properties

Released

28.09.2015

Publisher

Inštitut za kovinske materiale in tehnologije

Location

Ljubljana, Lepi pot 11, Ljubljana, Slovenija

ISBN

978-961-92518-8-1

Book

23rd INTERNATIONAL CONFERENCE ON MATERIALSAND TECHNOLOGY PROGRAM AND BOOK OF ABSTRACTS

Pages from

66

Pages to

66

Pages count

1

BibTex


@misc{BUT117979,
  author="Pavel {Bulejko} and Vlastimil {Bílek}",
  title="Influence of Chemical Additives and Curing Conditions on Mechanical Properties and Carbonation Resistance of Alkali Activated Slag Composites",
  annote="The main aim of the presented work is to investigate the effect of the addition of air entraining (AEA) and shrinkage reducing agents (SRA) on mechanical properties and carbonation resistance of alkali activated slag (AAS). Materials for the sample preparation were blast furnace slag activated using sodium silicate and AEA or SRA varying in content. Curing of samples was carried out in various conditions (air curing at laboratory conditions and water curing at the same temperature) and influence of these was studied too. The prepared samples (specimens with dimensions of 100 mm × 20 mm × 20 mm) where tested on compressive and bending strengths. The experimental results have shown that the addition of AEA had not significant influence on the mechanical properties while the addition of SRA had negative effect. However, the carbonation resistance markedly decreases with increasing amount of both agents. The same stands for the air curing as mechanical strengths are lower compared to those cured in water and the ratio of strength of the air cured composite and that of water cured one decreases with increasing content of SRA.",
  address="Inštitut za kovinske materiale in tehnologije",
  booktitle="23rd INTERNATIONAL CONFERENCE ON MATERIALSAND TECHNOLOGY PROGRAM AND BOOK OF ABSTRACTS",
  chapter="117979",
  howpublished="online",
  institution="Inštitut za kovinske materiale in tehnologije",
  year="2015",
  month="september",
  pages="66--66",
  publisher="Inštitut za kovinske materiale in tehnologije",
  type="abstract"
}