Publication detail

Determination of Thermal Conductivity on Lightweight Concretes

BODNÁROVÁ, L. HROUDOVÁ, J. ZACH, J. SOVOVÁ, K.

Original Title

Determination of Thermal Conductivity on Lightweight Concretes

English Title

Determination of Thermal Conductivity on Lightweight Concretes

Type

conference paper

Language

en

Original Abstract

A range of testing methods were used to study the potential structural changes as a result of the effects of high temperatures on lightweight types of concrete developed above all for fire resistant structures. One such test for monitoring changes in concrete structures is the non-stationary determination of the coefficient of thermal conductivity using the hot wire method. The matrix structure progressively collapses as a result of the effects of high temperatures on the concrete structure´s surface because erosion takes place of the matrix and aggregate porous structures. The degradation of the porosity of the concrete results in the deterioration of its thermal insulating properties. This paper assesses the dependence of the thermal conductivity coefficient of lightweight concretes on temperature and determines the potential occurrence of structural changes in the lightweight concrete matrix. The results were verified using other methods to determine the concrete´s resistance to thermal load.

English abstract

A range of testing methods were used to study the potential structural changes as a result of the effects of high temperatures on lightweight types of concrete developed above all for fire resistant structures. One such test for monitoring changes in concrete structures is the non-stationary determination of the coefficient of thermal conductivity using the hot wire method. The matrix structure progressively collapses as a result of the effects of high temperatures on the concrete structure´s surface because erosion takes place of the matrix and aggregate porous structures. The degradation of the porosity of the concrete results in the deterioration of its thermal insulating properties. This paper assesses the dependence of the thermal conductivity coefficient of lightweight concretes on temperature and determines the potential occurrence of structural changes in the lightweight concrete matrix. The results were verified using other methods to determine the concrete´s resistance to thermal load.

Keywords

Concrete, lightweight aggregate, thermal conductivity, fire safety, cement, fibres.

Released

27.01.2016

Publisher

Trans Tech Publications

Location

Švýcarsko

ISBN

978-3-03835-579-3

Book

Special Concrete and Composites 2015

Edition

Pavel Reiterman

Pages from

163

Pages to

168

Pages count

6

Documents

BibTex


@inproceedings{BUT119313,
  author="Lenka {Bodnárová} and Jitka {Peterková} and Jiří {Zach} and Kateřina {Sovová}",
  title="Determination of Thermal Conductivity on Lightweight Concretes",
  annote="A range of testing methods were used to study the potential structural changes as a result of the effects of high temperatures on lightweight types of concrete developed above all for fire resistant structures. One such test for monitoring changes in concrete structures is the non-stationary determination of the coefficient of thermal conductivity using the hot wire method. The matrix structure progressively collapses as a result of the effects of high temperatures on the concrete structure´s surface because erosion takes place of the matrix and aggregate porous structures. The degradation of the porosity of the concrete results in the deterioration of its thermal insulating properties. This paper assesses the dependence of the thermal conductivity coefficient of lightweight concretes on temperature and determines the potential occurrence of structural changes in the lightweight concrete matrix. The results were verified using other methods to determine the concrete´s resistance to thermal load.",
  address="Trans Tech Publications",
  booktitle="Special Concrete and Composites 2015",
  chapter="119313",
  doi="10.4028/www.scientific.net/KEM.677.163",
  edition="Pavel Reiterman",
  howpublished="print",
  institution="Trans Tech Publications",
  year="2016",
  month="january",
  pages="163--168",
  publisher="Trans Tech Publications",
  type="conference paper"
}