Publication detail

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

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

Original Title

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

English Title

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

Type

journal article - other

Language

en

Original Abstract

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.

English abstract

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.

Keywords

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

RIV year

2015

Released

01.08.2015

Publisher

Asian Research Publishing Network

ISBN

1819-6608

Periodical

ARPN Journal of Engineering and Applied Sciences

Year of study

10

Number

15

State

PK

Pages from

6299

Pages to

6304

Pages count

6

Documents

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",
  annote="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.",
  address="Asian Research Publishing Network",
  booktitle="ARPN Journal of Engineering and Applied Sciences",
  chapter="116124",
  howpublished="online",
  institution="Asian Research Publishing Network",
  number="15",
  volume="10",
  year="2015",
  month="august",
  pages="6299--6304",
  publisher="Asian Research Publishing Network",
  type="journal article - other"
}