Abstract
Concrete structures are commonly exposed to thermal loads as a result of the structure, ambient conditions, the heat of hydration, or exposure to fire. Therefore, there has been a growing interest in the research of advanced monitoring and analysis of concrete structures subjected to thermal load. Non-linear characteristics have been used to identify thermal damage evolution in concrete structures. The present paper investigates the effects of a high temperature on selected physical properties of concrete. Concrete properties were monitored and analyzed in several thermal steps up to 1200°C. Concrete specimens were heated in a programmable laboratory furnace at a heating rate of 5°C/min and loaded at six temperatures, 200°C, 400°C, 600°C, 800°C, 1000°C, and 1200°C, with each maintained for 60 minutes.
Highlights
Interest in the behaviour of concrete under high temperatures has recently been fuelled by fires of industrial, government- or private-owned buildings, tunnels, and other building structures.An interesting principle of non-destructive testing of heat-degraded concrete at high temperatures is presented [1]
Concrete structures are commonly exposed to thermal loads as a result of the structure, ambient conditions, the heat of hydration, or exposure to fire
There has been a growing interest in the research of advanced monitoring and analysis of concrete structures subjected to thermal load
Summary
Interest in the behaviour of concrete under high temperatures has recently been fuelled by fires of industrial, government- or private-owned buildings, tunnels, and other building structures.An interesting principle of non-destructive testing of heat-degraded concrete at high temperatures is presented [1]. Concrete specimens were heated in a programmable laboratory furnace at a heating rate of 5°C/min and loaded at six temperatures, 200°C, 400°C, 600°C, 800°C, 1000°C, and 1200°C, with each maintained for 60 minutes. An interesting principle of non-destructive testing of heat-degraded concrete at high temperatures is presented [1].
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