Publication detail

Development of advanced plasters for insulation and renovation of building constructions with regard to their hygrothermal behaviour

PETERKOVÁ, J. ZACH, J. SEDLMAJER, M.

Original Title

Development of advanced plasters for insulation and renovation of building constructions with regard to their hygrothermal behaviour

Type

journal article in Web of Science

Language

English

Original Abstract

Thermal insulation and renovation plasters are in still greater demand for the insulation and renovation of existing as well as new buildings. The main reason is the need for thermal protection with the purpose of reducing the energy consumption of existing buildings and the construction of near zero energy buildings. Suitable thermal insulation brings considerable savings in terms of energy costs and reduction of pollutants and emissions generated during heating. Protection of the environment and human health is also very important. Another reason is the need for the materials to be able to withstand increased humidity, which is a problem in older buildings. Research is aimed at developing materials which would be ecological, exhibit capillary activity, have an optimal ratio of thermal insulation and mechanical properties, high porosity, and low diffusion resistance. This paper describes the results of the development of plasters useable for thermal insulation and renovation of buildings and the study of their hygrothermal behaviour including a simulation of thermal and humidity conditions of a selected construction detail. Measurements and simulations showed that the newly developed mixtures had similar or better properties than the reference lime-cement plaster. The optimal mixture in terms of physical, thermal insulation, and mechanical properties was mixture 7 made with lime hydrate and fly ash 2. Simulations were run in the software THERM and WUFI so as to calculate the lowest surface temperatures for 3 different implementations of a jamb. The results showed that the newly developed plasters delivered markedly higher surface temperatures than the reference plaster, i.e. Mixture 1. All the new plasters tested in jamb detail 3 showed a surface temperature above 12.94 °C based on a determination of the dew point according to ČSN 73 0540–2 at a temperature of +21 °C and relative humidity of 60%.

Keywords

Lightweight aggregate; Thermal insulating plasters; Alternative binders; Thermal conductivity; Renovation of building structures

Authors

PETERKOVÁ, J.; ZACH, J.; SEDLMAJER, M.

Released

19. 5. 2018

Publisher

Elsevier

ISBN

0958-9465

Periodical

CEMENT & CONCRETE COMPOSITES

Year of study

2018

Number

92

State

United Kingdom of Great Britain and Northern Ireland

Pages from

47

Pages to

55

Pages count

9

URL

https://doi.org/10.1016/j.cemconcomp.2018.05.014

BibTex

@article{BUT147570,
  author="Jitka {Peterková} and Jiří {Zach} and Martin {Sedlmajer}",
  title="Development of advanced plasters for insulation and renovation of building constructions with regard to their hygrothermal behaviour",
  journal="CEMENT & CONCRETE COMPOSITES",
  year="2018",
  volume="2018",
  number="92",
  pages="47--55",
  doi="10.1016/j.cemconcomp.2018.05.014",
  issn="0958-9465",
  url="https://doi.org/10.1016/j.cemconcomp.2018.05.014"
}