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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
Type
journal article - other
Language
English
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.
Keywords
Initial Surface Absorption Test (ISAT), high temperatures, lightweight expanded clay aggregate, basalt aggregate, normative heat curve ISO 834, fire risk
Authors
NOVÁKOVÁ, I.; BODNÁROVÁ, L.; STAVAŘ, T.; HELA, R.
RIV year
2015
Released
1. 8. 2015
Publisher
Asian Research Publishing Network
ISBN
1819-6608
Periodical
ARPN Journal of Engineering and Applied Sciences
Year of study
10
Number
15
State
Islamic Republic of Pakistan
Pages from
6299
Pages to
6304
Pages count
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" }