Abstract
The development of steel in engineering structures or components faces the problems of high cost and high carbon emission, which demands new materials used as reinforcement to be proposed and applied. Bamboo is a green and renewable natural material, and has higher tensile strength parallel to grain compared to wood. Based on the excellent mechanical properties in the parallel-to-grain direction of bamboo fiber, this paper proposed an innovative bamboo fiber-reinforced polymer tendon with U-head (BFRP tendon). To analyze the tension capacity and mechanical behavior of the BFRP tendon, the thin-shell model and thick-shell model have been proposed in succession. Both models were compared with the results of tensile test and good agreement was achieved in the stress distribution and the ultimate load. The tension capacity of the BFRP tendon has been proved to be reliable, which can give full play to the advantages of bamboo fiber.
Highlights
Steel applied in concrete constructions has risen exponentially due to its high strength, good durability and easy handling
The results indicated that the ultimate load could reach to 529 kN, and the grout with a compression strength of about 60 MPa was destroyed at the same time
Taking the dimension of the BFRP tendon specimens used in this research as an example, the tension capacity is calculated by the two theoretical models
Summary
Steel applied in concrete constructions has risen exponentially due to its high strength, good durability and easy handling. The development of fiber-reinforced polymer (FRP) materials, such as carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer (GFRP), offers great potential for application in concrete constructions [1,2]. On account of the above characteristics of bamboo, it has been used in civil engineering to enhance the strength of concrete members and structures, such as beams and columns [6,7], slabs and walls [8,9], beam-column joints [10,11], and even the whole construction [12]. In most cases, bamboo as a reinforcing material in concrete structures is conservatively designed and the strength of bamboo fiber cannot be fully exploited
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