Publication detail

Mechanical, fracture-mechanical, hydric, thermal, and durability properties of lime-metakaolin plasters for renovation of historical buildings

VEJMELKOVÁ, E. KEPPERT, M. KERŠNER, Z. ROVNANÍKOVÁ, P. ČERNÝ, R.

Original Title

Mechanical, fracture-mechanical, hydric, thermal, and durability properties of lime-metakaolin plasters for renovation of historical buildings

Type

journal article - other

Language

English

Original Abstract

An extensive set of parameters of several lime–metakaolin plasters, including basic material characteristics, mechanical and fracture-mechanical properties, durability characteristics, hydric parameters and thermal properties, is presented. In a comparison with the reference lime plaster without any additives, the experimental results show three- to five-fold increase in strength, about 25% decrease of water vapor diffusion coefficient, 20% decrease of water absorption coefficient and a very high increase of freeze/thaw resistance. Using the lime of very high purity in lime–metakaolin plasters (98.0% of CaO + MgO) is found preferable to lower-purity limes; the main differences are observed in the freeze/thaw resistance, mechanical and fracture-mechanical parameters. A comparison with two commercial renovation plasters shows that the only notable advantage of the best commercial plaster studied over the best lime–metakaolin plaster is in its lower moisture diffusivity but it can be matched relatively easily by using hydrophobization admixtures. Therefore, it can be concluded that the lime–metakaolin plasters can find a wider application range in the renovation of historical buildings in the future and may at least partially replace the current renovation plasters as a cheaper and equally effective solution.

Keywords

Lime-metakaolin plasters, historical buildings, renovation, mechanical properties, fracture-mechanical properties, hydric properties, thermal properties, durability properties

Authors

VEJMELKOVÁ, E.; KEPPERT, M.; KERŠNER, Z.; ROVNANÍKOVÁ, P.; ČERNÝ, R.

RIV year

2012

Released

1. 1. 2012

ISBN

0950-0618

Periodical

Construction and building materials

Year of study

2012

Number

31

State

United Kingdom of Great Britain and Northern Ireland

Pages from

22

Pages to

28

Pages count

7

BibTex

@article{BUT97282,
  author="Eva {Vejmelková} and Martin {Keppert} and Zbyněk {Keršner} and Pavla {Rovnaníková} and Robert {Černý}",
  title="Mechanical, fracture-mechanical, hydric, thermal, and durability properties of lime-metakaolin plasters for renovation of historical buildings",
  journal="Construction and building materials",
  year="2012",
  volume="2012",
  number="31",
  pages="22--28",
  issn="0950-0618"
}