Abstract
A novel joining method for permanent formwork, involving the embedment of GFRP in high-strength fiber reinforced cementitious composites (HSFRCC), is proposed. Direct pull-out test is carried out to investigate the bonding capacity between the HSFRCC and GFRP reinforcement. From the experimental data, interfacial parameters are extracted for calculating the required embedded length of GFRP bars to ensure sufficient bonding capacity. According to the test results, the required embedded length of GFRP bars is obtained and the joint width thus can be determined. To further verify the joining method, beam members made with joined and monolithic PDCC formwork are prepared and tested under four point bending. The comparison indicates only about 5 % difference between the load capacities in the two cases. Besides, the worse scenario in the test that the joint was placed at the location with the maximum moment would rarely happen in practice.
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Financial support of the work by the Hong Kong Research Grant Council, under CERG UST615508, is gratefully acknowledged.
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Jin, Q., Leung, C.K.Y. & Yu, C. Effective joining method for pseudo-ductile permanent formwork. Mater Struct 46, 345–360 (2013). https://doi.org/10.1617/s11527-012-9905-3
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DOI: https://doi.org/10.1617/s11527-012-9905-3