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An Anchoring Groove Technique to Enhance the Bond Behavior between Heat-Damaged Concrete and CFRP Composites

Department of Civil Engineering, Jordan University of Science and Technology, Irbid 22110, Jordan
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Buildings 2020, 10(12), 232; https://doi.org/10.3390/buildings10120232
Received: 18 November 2020 / Revised: 23 November 2020 / Accepted: 30 November 2020 / Published: 7 December 2020
This experimental study was conducted to evaluate the effectiveness of using carbon fiber-reinforced polymer (CFRP) composites with special anchoring grooves, specifically in terms of the ability of the concrete–CFRP bond to withstand elevated temperatures. The obtained findings of this experiment clearly highlighted the effectiveness of the direction of the anchoring grooves on the behavior of the concrete–CFRP bonding area. The results also showed that high temperatures lessen the bond’s strength and the ultimate slippage. On the other hand, this study showed that increasing the length of the CFRP sheet resulted in enhancement of the bond’s strength and slippage. When exposed to temperatures above 500 °C, the structures’ residual splitting and compression strength decreased significantly, resulting in the bond’s strength reducing to 67% and the slippage to 19%, with respect to the control samples. In the non-grooved and vertically grooved beams, the CFRP–concrete bond showed a skin-peeling type of failure. It appeared, also, that the temperature and the number of anchored grooves significantly affected the bonding area of the surface; as the surface was exposed to failure in adhesion, more concrete remained attached to the CFRP composite, signifying a stronger attachment. View Full-Text
Keywords: bond-slip behavior; anchoring groove; elevated temperature bond-slip behavior; anchoring groove; elevated temperature
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MDPI and ACS Style

Al-Rousan, R.; AL-Tahat, M. An Anchoring Groove Technique to Enhance the Bond Behavior between Heat-Damaged Concrete and CFRP Composites. Buildings 2020, 10, 232. https://doi.org/10.3390/buildings10120232

AMA Style

Al-Rousan R, AL-Tahat M. An Anchoring Groove Technique to Enhance the Bond Behavior between Heat-Damaged Concrete and CFRP Composites. Buildings. 2020; 10(12):232. https://doi.org/10.3390/buildings10120232

Chicago/Turabian Style

Al-Rousan, Rajai; AL-Tahat, Mohammad. 2020. "An Anchoring Groove Technique to Enhance the Bond Behavior between Heat-Damaged Concrete and CFRP Composites" Buildings 10, no. 12: 232. https://doi.org/10.3390/buildings10120232

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