Publication detail

Effect of curing temperature on the development of hard structure of metakaolin-based geopolymer

ROVNANÍK, P.

Original Title

Effect of curing temperature on the development of hard structure of metakaolin-based geopolymer

Type

journal article - other

Language

English

Original Abstract

The properties of metakaolin-based geopolymer are directly impacted not only by the specific surface and composition of initial metakaolin and the type, composition and relative amount of alkali activator used but they also depend on the conditions during the initial period of geopolymerization reaction. This study aimed to analyze the effect of curing temperature (10 C, 20 C, 40 C, 60 C and 80 C) and time on the compressive and flexural strengths, pore distribution and microstructure of alkali activated metakaolin material. The results have shown that the treatment of fresh mixture at elevated temperatures accelerates the strengths development but the 28 days mechanical properties are deteriorated in comparison with results obtained for mixtures that were treated at an ambient or slightly decreased temperature. The influence of curing temperature on microstructure of geopolymer matrix was verified in terms of pore distribution studied by means of mercury intrusion porosimetry. The study revealed a tendency to increase pore size and cumulative pore volume with rising temperature, which is reflected in mechanical properties. It has been also shown the possibility of monitoring the geopolymerization reaction by means of Infrared Spectroscopy.

Keywords

geopolymer, metakaolin, mechanical properties, curing temperature, porosimetry

Authors

ROVNANÍK, P.

RIV year

2010

Released

1. 2. 2010

Publisher

Elsevier

ISBN

0950-0618

Periodical

Construction and building materials

Year of study

24

Number

7

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1176

Pages to

1183

Pages count

8

BibTex

@article{BUT48050,
  author="Pavel {Rovnaník}",
  title="Effect of curing temperature on the development of hard structure of metakaolin-based geopolymer",
  journal="Construction and building materials",
  year="2010",
  volume="24",
  number="7",
  pages="1176--1183",
  issn="0950-0618"
}