Publication detail

Behaviour of cement composites with lightweight and heavyweight aggregates at high temperatures

BODNÁROVÁ, L. HROUDOVÁ, J. BROŽOVSKÝ, J. ZACH, J. VÁLEK, J.

Original Title

Behaviour of cement composites with lightweight and heavyweight aggregates at high temperatures

English Title

Behaviour of cement composites with lightweight and heavyweight aggregates at high temperatures

Type

journal article in Web of Science

Language

en

Original Abstract

This paper presents new results of the research of the influence of individual input components done on the behaviour of cement based composite materials exposed to high temperatures. A new approach of this research lies in combining a fraction of basalt fine aggregate and an aggregate base on expanded clay for a composite material with lower volume weight and higher strengths and a resistance to high temperatures. In the field of dispersed reinforcement, new polypropylene fibers treated by low temperature plasma were tested. Degradation of the structure of designed mixtures was evaluated by comparing density changes, mechanical and acoustic properties before and after exposure to high temperatures. An optical microscope was used for determining the width of cracks caused by a thermal load. The contribution of this research was the use of non-destructive methods for diagnostics of quality and properties of designed concrete mixtures exposed to high temperatures.

English abstract

This paper presents new results of the research of the influence of individual input components done on the behaviour of cement based composite materials exposed to high temperatures. A new approach of this research lies in combining a fraction of basalt fine aggregate and an aggregate base on expanded clay for a composite material with lower volume weight and higher strengths and a resistance to high temperatures. In the field of dispersed reinforcement, new polypropylene fibers treated by low temperature plasma were tested. Degradation of the structure of designed mixtures was evaluated by comparing density changes, mechanical and acoustic properties before and after exposure to high temperatures. An optical microscope was used for determining the width of cracks caused by a thermal load. The contribution of this research was the use of non-destructive methods for diagnostics of quality and properties of designed concrete mixtures exposed to high temperatures.

Keywords

cement, high temperature, fire resistance, fibers, volumetric change,; mechanical properties, propagation of ultrasonic waves, modulus of elasticity, concrete

Released

24.03.2017

Publisher

Budapest University of Technology and Economics

Pages from

272

Pages to

281

Pages count

10

URL

Full text in the Digital Library

BibTex


@article{BUT131492,
  author="Lenka {Bodnárová} and Jitka {Peterková} and Jiří {Brožovský} and Jiří {Zach} and Jaroslav {Válek}",
  title="Behaviour of cement composites
with lightweight and heavyweight
aggregates at high temperatures",
  annote="This paper presents new results of the research of the influence
of individual input components done on the behaviour of cement
based composite materials exposed to high temperatures. A
new approach of this research lies in combining a fraction of
basalt fine aggregate and an aggregate base on expanded clay
for a composite material with lower volume weight and higher
strengths and a resistance to high temperatures. In the field of
dispersed reinforcement, new polypropylene fibers treated by
low temperature plasma were tested. Degradation of the structure
of designed mixtures was evaluated by comparing density
changes, mechanical and acoustic properties before and after
exposure to high temperatures. An optical microscope was used
for determining the width of cracks caused by a thermal load.
The contribution of this research was the use of non-destructive
methods for diagnostics of quality and properties of designed
concrete mixtures exposed to high temperatures.",
  address="Budapest University of Technology and Economics",
  chapter="131492",
  doi="10.3311/PPci.9365",
  howpublished="online",
  institution="Budapest University of Technology and Economics",
  number="2 (2017)",
  volume="61",
  year="2017",
  month="march",
  pages="272--281",
  publisher="Budapest University of Technology and Economics",
  type="journal article in Web of Science"
}