Publication detail

Pore-size distribution effects on the thermal conductivity of the fired clay body from lightweight bricks

SOKOLÁŘ, R. ŠVEDA, M. PAVLÍK, V.

Original Title

Pore-size distribution effects on the thermal conductivity of the fired clay body from lightweight bricks

Type

journal article in Web of Science

Language

English

Original Abstract

This study investigated the effects of three pore-forming agents on the properties of the fired clay body applied in the production of lightweight bricks for the building envelopes. Test samples were made from clay raw material already containing two combustible pore-forming agents (sawdust and cellulose sludge). A part of this research was focused on studying the influence of adding two combustible pore-forming agents (molasses and cornstarch) and a chemical additive Vuppor to the claw raw material. Testing of the material properties showed that although the three samples had almost the same pore volume, their thermal conductivities varied. These findings led to an important conclusion. The pore size of 1-200 mu m (filled with not only air but also biomass ash) reduced the thermal conductivity, and conversely, an increase in the small pore size less than 1 mu m increased the thermal conductivity of the fired clay body.

Keywords

Brick; thermal conductivity; pore size; pore-forming agent; biomass ash

Authors

SOKOLÁŘ, R.; ŠVEDA, M.; PAVLÍK, V.

Released

20. 6. 2017

Publisher

SAGE PUBLICATIONS LTD, 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND

Location

London, England

ISBN

1744-2591

Periodical

Journal of Building Physics

Year of study

41

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

78

Pages to

94

Pages count

17

BibTex

@article{BUT156301,
  author="Radomír {Sokolář} and Mikuláš {Šveda} and Vladimír {Pavlík}",
  title="Pore-size distribution effects on the thermal conductivity of the fired clay body from lightweight bricks",
  journal="Journal of Building Physics",
  year="2017",
  volume="41",
  number="1",
  pages="78--94",
  doi="10.1177/1744259116672437",
  issn="1744-2591"
}