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Effect of different parameters on concrete-Bar bond under high temperature

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Abstract

Exposed temperature level is one of the important parameters for concrete-bar bond in reinforced concrete. Subjecting reinforced concrete to high temperature, as in fire, leads to loss in concrete-bar bond. Environmental factors also can be stated as temperature level, heating rate, and heating time. In this study, the effects of temperature level, concrete cover, and mechanical properties of concrete on concrete-bar bond have been investigated in different concrete classes. Concrete strength, concrete cover, and temperature level were chosen as parameters. Pullout and mechanical tests were conducted on the specimens exposed to 20, 300, and 500°C (68, 572, and 932°F). As a result, it was seen that as concrete cover increases, concrete-bar bonds were less affected by high temperature. Furthermore, the empirical relationship between the experimental pullout loads and parameters has been defined.

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Arel, H. Ş., & Yazici, Ş. (2014). Effect of different parameters on concrete-Bar bond under high temperature. ACI Materials Journal, 111(6), 633–640. https://doi.org/10.14359/51686992

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