Publication detail

Mathematical modeling of processes proceeding in concrete during fire

ROZEHNALOVÁ, P. KUČEROVÁ, A. ŠTĚPÁNEK, P.

Original Title

Mathematical modeling of processes proceeding in concrete during fire

English Title

Mathematical modeling of processes proceeding in concrete during fire

Type

conference paper

Language

en

Original Abstract

Paper aims to describe and model processes in concrete during fire. Concrete is porous material, which contains water and moisture. Water in concrete is: a) in pores (from production and from outer environment), b) chemically bounded. Higher temperature releases chemically bounded water into the pores, which increases pore pressure. Increased pressure may lead to service failures. Amount of moisture in the pore structure is essential for the reliability and stability of building constructions. Mathematical model of this phenomenon consists of nonlinear non-stationary system of partial differential equations accompanied by the boundary conditions. From the equations a numerical scheme is derived. The numerical results are compared with data from experiment.

English abstract

Paper aims to describe and model processes in concrete during fire. Concrete is porous material, which contains water and moisture. Water in concrete is: a) in pores (from production and from outer environment), b) chemically bounded. Higher temperature releases chemically bounded water into the pores, which increases pore pressure. Increased pressure may lead to service failures. Amount of moisture in the pore structure is essential for the reliability and stability of building constructions. Mathematical model of this phenomenon consists of nonlinear non-stationary system of partial differential equations accompanied by the boundary conditions. From the equations a numerical scheme is derived. The numerical results are compared with data from experiment.

Keywords

Concrete, fire simulation, finite element method.

RIV year

2014

Released

08.10.2014

Publisher

Institute of Physics, Slovak Academy of Science in Bratislava

ISBN

978-80-214-5034-9

Book

Thermophysics 2014 - Conference Proceedings

Edition

first

Pages from

97

Pages to

104

Pages count

8

BibTex


@inproceedings{BUT111400,
  author="Petra {Rozehnalová} and Anna {Matušíková} and Petr {Štěpánek}",
  title="Mathematical modeling of processes proceeding in concrete during fire",
  annote="Paper aims to describe and model processes in concrete during fire. Concrete is porous material, which contains water and moisture. Water in concrete is: a) in pores (from production and from outer environment), b) chemically bounded. Higher temperature releases chemically bounded water into the pores, which increases pore pressure. Increased pressure may lead to service failures. Amount of moisture in the pore structure is essential for the reliability and stability of building constructions.
Mathematical model of this phenomenon consists of nonlinear non-stationary system of partial differential equations accompanied by the boundary conditions. From the equations a numerical scheme is derived. The numerical results are compared with data from experiment.
",
  address="Institute of Physics, Slovak Academy of Science in Bratislava",
  booktitle="Thermophysics 2014 - Conference Proceedings",
  chapter="111400",
  edition="first",
  howpublished="print",
  institution="Institute of Physics, Slovak Academy of Science in Bratislava",
  year="2014",
  month="october",
  pages="97--104",
  publisher="Institute of Physics, Slovak Academy of Science in Bratislava",
  type="conference paper"
}