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Investigation of the bond properties between hybrid fiberreinforced concrete and BFRP bars after exposure to high temperature
- Source :
- Materiales de Construccion, Vol 74, Iss 353 (2024)
- Publication Year :
- 2024
- Publisher :
- Consejo Superior de Investigaciones CientÃficas, 2024.
-
Abstract
- This research investigated the bond properties at high temperatures and with hybrid fiber addition between basalt fiber reinforced polymer (BFRP) bars and hybrid fiber-reinforced concrete (HFRC). The tensile strength and appearance morphology of BFRP bars were analyzed. Used scanning electron microscopy (SEM) to examine the microscopic morphology and used the bond-slip constitutive model to fit the bond-slip curves. When BFRP bars after exposed to 300 °C, their tensile strength dropped by 42%. With the increasing temperature, the bond strength and stiffness of normal concrete (NC) specimens decreased by 27.3 % and 67.5 %, respectively, while HFRC specimens decreased by 20.8 % and 55 %, respectively. Hybrid fibers increased the bond strength and stiffness of HFRC specimens by 27.1 % and 49.1 %, respectively. The best fitting models were the Malvar model and the Continuous Curve model.
Details
- Language :
- English, Spanish; Castilian
- ISSN :
- 04652746 and 19883226
- Volume :
- 74
- Issue :
- 353
- Database :
- Directory of Open Access Journals
- Journal :
- Materiales de Construccion
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.fdd71779649ce8dd189ac9a777441
- Document Type :
- article
- Full Text :
- https://doi.org/10.3989/mc.2024.361123