Detail publikace

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.

Originální název

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

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Rok RIV

2012

Vydáno

1. 1. 2012

ISSN

0950-0618

Periodikum

Construction and building materials

Ročník

2012

Číslo

31

Stát

Spojené království Velké Británie a Severního Irska

Strany od

22

Strany do

28

Strany počet

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"
}