Publication detail

Hygrothermal properties off glass fiber reinforced cements subject to elevated temperature

ČERNÝ, R. PODĚBRADSKÁ, J. TOTOVÁ, M. TOMAN, J. DRCHALOVÁ, J. ROVNANÍKOVÁ, P. BAYER, P.

Original Title

Hygrothermal properties off glass fiber reinforced cements subject to elevated temperature

Type

journal article - other

Language

English

Original Abstract

The effect elevated temperatures on basic hybrid and thermal properties of three types of glass fiber reinforced cement composites (GFRC) is analyzed in the paper. The main difference in the composition of particular GFRC is the use of wollastonite and vermiculite in two of them instead of usual sand aggregates. The composites containing wollastonite and vermiculite are found to have about four times lower thermal conductivity and two to three times lower thermal diffusivity in room temperature conditions. After heating the samples to 800C deg. and subsequent cooling, a decrease in room-temperature thermal conductivity as high as 50% and an increase in moisture diffusivity in the range of one to two orders of magnitude are observed for all types of studied materials. The application of wollastonite and vermiculite exhibits a positive effect on the high temperature linear thermal expansion coefficient. On the other hand, for temperatures higher than 450 C deg. the thermal diffusivity of materials with wollastonite and vermiculite is higher than of common GFRC with sand aggregates.

Key words in English

glass fibre, cement, temperature, hygric properties

Authors

ČERNÝ, R.; PODĚBRADSKÁ, J.; TOTOVÁ, M.; TOMAN, J.; DRCHALOVÁ, J.; ROVNANÍKOVÁ, P.; BAYER, P.

Released

1. 1. 2004

ISBN

1359-5997

Periodical

Materials and Structures

Number

37

State

Kingdom of the Netherlands

Pages from

597

Pages to

606

Pages count

10

BibTex

@article{BUT46247,
  author="Robert {Černý} and Jitka {Poděbradská} and Michaela {Totová} and Jan {Toman} and Jaroslava {Drchalová} and Pavla {Rovnaníková} and Patrik {Bayer}",
  title="Hygrothermal properties off glass fiber reinforced cements subject to elevated temperature",
  journal="Materials and Structures",
  year="2004",
  number="37",
  pages="10",
  issn="1359-5997"
}