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Comparative study of Steel-FRP, FRP and steel reinforced coral concrete beams in their flexural performance

Wang, L., Zhang, J., Huang, C. & Fu, F. ORCID: 0000-0002-9176-8159 (2020). Comparative study of Steel-FRP, FRP and steel reinforced coral concrete beams in their flexural performance. Materials, 13(9), article number 2097. doi: 10.3390/ma13092097


In this paper, a comparative study of Carbon Fiber Reinforced Polymer (CFRP) Bar and Steel-Carbon Fiber Composite Bar (SCFCB) reinforced coral concrete beams are made through a series experimental tests and theoretical analysis. The flexural capacity, crack development and failure modes of CFRP and SCFCB reinforced coral concrete were investigated in detail. They are also compared to ordinary steel reinforced coral concrete beams. The results show that under the same condition of reinforcement ratio, the SCFCB reinforced beam exhibits better performance than those of the CFRP reinforced beams, and its stiffness is slightly lower than that of the steel reinforced beam. Under the same load condition, the crack width of the SCFCB beam is between the steel reinforced beam and the CFRP bar reinforced beam. Before the steel core yields, the crack growth rate of SCFCB beam is similar to the steel reinforced beam. SCFCB has a higher strength utilization rate, about 70% -85% of its ultimate strength. The current design guidance was also examined based on the test results. It was found that the existing design specifications for FRP reinforced normal concrete is not suitable for SCFCB reinforced coral concrete structures.

Publication Type: Article
Publisher Keywords: coral concrete beam; flexural performance; CFRP bars; steel-CFRP composite bars (SCFCB); SCFCB; lightweight aggregate concrete
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: School of Science & Technology > Engineering
SWORD Depositor:
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Available under License Creative Commons: Attribution International Public License 4.0.

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