This investigation forecasts the failure analysis of passively constrained glass fibre reinforced short columns subjected to axial collapse loading. The parametric study of sixteen stub columns are presented in this study out of which eight specimens are encased with 1 mm thick metal sheets of sections 120 × 120 × 450 mm, which the other eight specimens were encased specimens of size 140 × 140 × 500 mm. The infilled concrete consisted of M30 grade concrete designed as per IS codal provisions with glass fibres added by weight of cement in percentage of 0, 1, 1.5 and 2%. The parameters of the study includes the effect of glass fibres in encased and bare short columns, effect of encasement and glass fibre on the load carrying capacity of the samples and crack propagation and failure analysis of fibre reinforced bare and encased samples subjected to crushing loading. Results concludes that the encased columns were able to take higher load due to the effect of triaxial loading, whereas the glass fibre in optimum dosage of 1% showed lower crack development with increased peak load for all types of samples. Non-destructive testing performed using rebound hammer and ultrasonic pulse velocity test showed parity with experimental observations. The prediction of design peak load using Indian code for bare samples and Eurocode 4 for bare and encased samples were in line with experimental outcomes.

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Analysis of Passively Encased Glass Fibre Reinforced Short Column Under Compression

  • Pranoy Roy,
  • Somnath Sen,
  • Anindya Chatterjee,
  • Ananya Ghosh,
  • Amiya K. Samanta

摘要

This investigation forecasts the failure analysis of passively constrained glass fibre reinforced short columns subjected to axial collapse loading. The parametric study of sixteen stub columns are presented in this study out of which eight specimens are encased with 1 mm thick metal sheets of sections 120 × 120 × 450 mm, which the other eight specimens were encased specimens of size 140 × 140 × 500 mm. The infilled concrete consisted of M30 grade concrete designed as per IS codal provisions with glass fibres added by weight of cement in percentage of 0, 1, 1.5 and 2%. The parameters of the study includes the effect of glass fibres in encased and bare short columns, effect of encasement and glass fibre on the load carrying capacity of the samples and crack propagation and failure analysis of fibre reinforced bare and encased samples subjected to crushing loading. Results concludes that the encased columns were able to take higher load due to the effect of triaxial loading, whereas the glass fibre in optimum dosage of 1% showed lower crack development with increased peak load for all types of samples. Non-destructive testing performed using rebound hammer and ultrasonic pulse velocity test showed parity with experimental observations. The prediction of design peak load using Indian code for bare samples and Eurocode 4 for bare and encased samples were in line with experimental outcomes.