Detail publikace

EVALUATION OF DISRUPTION OF CONCRETE CAUSED BY EXPOSURE TO HIGH TEMPERATURES BY INITIAL SURFACE ABSORPTION TEST

NOVÁKOVÁ, I. BODNÁROVÁ, L. STAVAŘ, T. HELA, R.

Originální název

EVALUATION OF DISRUPTION OF CONCRETE CAUSED BY EXPOSURE TO HIGH TEMPERATURES BY INITIAL SURFACE ABSORPTION TEST

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

If a concrete structure is exposed to high temperature, inner structure of concrete degrades. Level of permeability of the surface layer is important for evaporation of water vapor from the whole bulk of the structure. If permeability of the surface layer is low, explosive spalling can occur and steel reinforcement can be uncovered. One of methods of measuring permeability of the surface layer of concrete is the Initial Surface Absorption Test (ISAT). The paper states results of experimental determination of permeability of the surface layer of concrete before and after thermal load. Tested concretes contained basalt aggregate and lightweight expanded clay aggregate. Results of the measurements showed that structure of surface layer in case of concrete with lightweight expanded clay aggregate is less porous than the structure of concrete with basalt aggregates. Damages caused by exposer to high temperature were recorded on both tested mixtures but concrete with lightweight expanded clay aggregate resists better.

Klíčová slova

Initial Surface Absorption Test (ISAT), high temperatures, lightweight expanded clay aggregate, basalt aggregate, normative heat curve ISO 834, fire risk

Autoři

NOVÁKOVÁ, I.; BODNÁROVÁ, L.; STAVAŘ, T.; HELA, R.

Rok RIV

2015

Vydáno

1. 8. 2015

Nakladatel

Asian Research Publishing Network

ISSN

1819-6608

Periodikum

ARPN Journal of Engineering and Applied Sciences

Ročník

10

Číslo

15

Stát

Pákistánská islámská republika

Strany od

6299

Strany do

6304

Strany počet

6

BibTex

@article{BUT116124,
  author="Iveta {Nováková} and Lenka {Bodnárová} and Tomáš {Stavař} and Rudolf {Hela}",
  title="EVALUATION OF DISRUPTION OF CONCRETE CAUSED BY EXPOSURE TO HIGH TEMPERATURES BY INITIAL SURFACE ABSORPTION TEST",
  journal="ARPN Journal of Engineering and Applied Sciences",
  year="2015",
  volume="10",
  number="15",
  pages="6299--6304",
  issn="1819-6608"
}