Publication detail

Effect of curing regime on the properties of alkali-activated slag/limestone mortar subjected to high temperatures

ROVNANÍK, P. FIALOVÁ, B.

Original Title

Effect of curing regime on the properties of alkali-activated slag/limestone mortar subjected to high temperatures

Type

conference paper

Language

English

Original Abstract

Alkali-activated slag is a material which was proved to have a higher resistance against high temperature loading than materials based on ordinary Portland cement. In spite of this fact it also undergoes partial decomposition followed by the deterioration of the mechanical properties. This paper investigates the effect of various curing regimes applied to the samples which were exposed to temperature 200–1200 °C on the mechanical properties and microstructure of the alkali-activated slag/limestone blends. The amount of limestone was 15% from the mass of slag. On set of specimens was treated on air at laboratory conditions, the second set was immersed in water and the last was treated stored in humid chamber with 95% relative humidity for the period of 60 days. The results showed that water curing has a strong positive influence on the compressive as well as flexural strength of the specimens exposed to temperatures up to 600 °C. Specimens which were exposed to 800 and 1000 °C showed the best performance after treatment in humid chamber, and after exposure to 1200 °C the best compressive strength exhibited the air cured samples.

Keywords

alkali-activation; slag; limestone; high temperature; curing; mechanical properties; microstructure

Authors

ROVNANÍK, P.; FIALOVÁ, B.

Released

11. 8. 2016

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

9783038357407

Book

14th International Conference Silicate Binders, ICBM 2015

ISBN

0255-5476

Periodical

Materials Science Forum

Year of study

865

Number

1

State

Swiss Confederation

Pages from

37

Pages to

41

Pages count

5

URL

http://www.scientific.net/MSF.865.37

BibTex

@inproceedings{BUT128933,
  author="Pavel {Rovnaník} and Barbora {Fialová}",
  title="Effect of curing regime on the properties of alkali-activated slag/limestone mortar subjected to high temperatures",
  booktitle="14th International Conference Silicate Binders, ICBM 2015",
  year="2016",
  journal="Materials Science Forum",
  volume="865",
  number="1",
  pages="37--41",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/MSF.865.37",
  isbn="9783038357407",
  issn="0255-5476",
  url="http://www.scientific.net/MSF.865.37"
}