The bond strength by pull-off and direct tensile strength of concrete damaged by elevated temperatures
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Date
2018-07-16
Authors
Čairović, Iva
Daněk, Petr
Balkanský, Ondřej
0000-0003-3109-3820Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
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Abstract
This paper presents the results of an experimental study of selected characteristics of concrete following its exposure to high temperatures. The monitored parameter was the influence of high temperatures on the bond strength and tensile strength of concrete. The bond strength was tested by a pull-off test, the tensile strength was determined as the direct tensile strength. Experimental concrete panels of 2300 × 1300 × 150 mm were exposed to high temperatures (corresponding to the temperatures in a normal fire) using a fire test furnace at the AdMaS Science Centre of the Faculty of Civil Engineering, Brno University of Technology. The direct tensile strength test was performed on cylinders (diameter of 100 mm and length of 100 mm) made from core samples taken from the panel. The pull-off test was performed on the surface exposed to high temperatures. The results of the experiment show a significant influence of high temperatures on the examined characteristics, and both characteristics were found to significantly decrease with a growing thermal load.
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Citation
IOP Conference Series: Materials Science and Engineering. 2018, vol. 385, issue 1, p. 1-6.
http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012047
http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012047
Document type
Peer-reviewed
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Published version
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Language of document
en