Publication detail

Thermal Behavior of an Intumescent Alkaline Aluminosilicate Composite Material for Fire Protection of Structural Elements

SOTIRIADIS, K. GUZZI, S. G. MÁCOVÁ, P. VIANY, A. DVOŘÁK, K. DRDÁCKÝ, M.

Original Title

Thermal Behavior of an Intumescent Alkaline Aluminosilicate Composite Material for Fire Protection of Structural Elements

Type

journal article in Web of Science

Language

English

Original Abstract

The behavior of a composite material, consisting of metakaolin-based alkaline aluminosilicate binder, granules of the same initial composition used as a swelling agent, and calcium carbonate, was studied during firing in the temperature range 25°C–1,000°C. A combination of techniques was used to investigate its microstructure, composition, and properties. The material developed porosity at 200°C, largely contributed by water loss from the swelling agent, resulting in expansion and decrease in thermal conductivity and mechanical strength. Between 400°C and 800°C the thermal insulation characteristics further improved. At 1,000°C, crystallization of new phases with a decrease in the amorphous content produced a small contraction and increased thermal conductivity and mechanical strength. The material exhibited good stability with appropriate characteristics for use as intumescent coating for fire protection of structural elements. Modification of the binder:granules ratio may allow producing composites for specific applications.

Keywords

Alkaline aluminosilicate materials; Metakaolin; Intumescent coatings; Fire protection; X-ray micro-computed tomography

Authors

SOTIRIADIS, K.; GUZZI, S. G.; MÁCOVÁ, P.; VIANY, A.; DVOŘÁK, K.; DRDÁCKÝ, M.

Released

20. 3. 2019

Publisher

ASCE Library

Location

United States of America

ISBN

1943-5533

Periodical

JOURNAL OF MATERIALS IN CIVIL ENGINEERING

Year of study

31

Number

6

State

United States of America

Pages from

1

Pages to

9

Pages count

9

BibTex

@article{BUT156335,
  author="Konstantinos {Sotiriadis} and Sergii G. {Guzzi} and Petra {Mácová} and Alberto {Viany} and Karel {Dvořák} and Miloš {Drdácký}",
  title="Thermal Behavior of an Intumescent Alkaline Aluminosilicate Composite Material for Fire Protection of Structural Elements",
  journal="JOURNAL OF MATERIALS IN CIVIL ENGINEERING",
  year="2019",
  volume="31",
  number="6",
  pages="1--9",
  doi="10.1061/(ASCE)MT.1943-5533.0002702",
  issn="1943-5533"
}