DIAGNOSTICS OF CONCRETE ELEMENTS AFTER THE FIRE
Journal Title: Structure and Environment - Year 2018, Vol 0, Issue 3
Abstract
The paper presents selected methods for determining the influence of fire on the load capacity of concrete elements – diagnostics and damages arising after application of fire temperatures. The subject may not seem new in terms of the wellknown drop in the strength of concrete in fire conditions, but an important aspect discussed in the paper is the fracture toughness of concrete depending on high temperatures. Destructions, caused by fire temperatures, affects the physical and mechanical properties of concrete, and their size can be assessed using the stress intensity factor. According to our own research, the critical stress intensity factor KIC of concrete decreases faster than the dynamic modulus of elasticity, and also faster than compressive and tensile strength. The paper describes selected methods of diagnostics of construction elements from concrete damaged by fire.
Authors and Affiliations
STANISŁAW PLECHAWSKI, Stanisław Fic
Keywords
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- EP ID EP526397
- DOI 10.30540/sae-2018-022
- Views 68
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