Analysis of temperature degraded concrete at high temperature by applying of non-linear characteristics

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.

Keywords

acoustic non-linear characteristic, degraded temperature, pulse-echo method

Citation

IOP Conference Series: Materials Science and Engineering. 2018, vol. 379, issue 1, p. 1-6.
http://iopscience.iop.org/article/10.1088/1757-899X/379/1/012036

Document type

Peer-reviewed

Document version

Published version

Language of document

en