Lenka Bodnárová and Rudolf Hela and Michala Hubertová and Iveta Nováková
Behaviour of Lightweight Expanded Clay Aggregate Concrete Exposed to High Temperatures
1210 - 1213
2014
8
12
International Journal of Civil and Environmental Engineering
https://publications.waset.org/pdf/9999750
https://publications.waset.org/vol/96
World Academy of Science, Engineering and Technology
This paper is concerning the issues of behaviour of
lightweight expanded clay aggregates concrete exposed to high
temperature. Lightweight aggregates from expanded clay are
produced by firing of row material up to temperature 1050°C.
Lightweight aggregates have suitable properties in terms of volume
stability, when exposed to temperatures up to 1050°C, which could
indicate their suitability for construction applications with higher risk
of fire. The test samples were exposed to heat by using the standard
temperaturetime curve ISO 834. Negative changes in resulting
mechanical properties, such as compressive strength, tensile strength,
and flexural strength were evaluated. Also visual evaluation of the
specimen was performed. On specimen exposed to excessive heat, an
explosive spalling could be observed, due to evaporation of
considerable amount of unbounded water from the inner structure of
the concrete.
Open Science Index 96, 2014