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<p>The present study analyses how the precast concrete affects steel reinforcement of&#xa0;concrete relation in terms of bond strength. Precast concrete with 6, 8&#xa0;and 10 mm deformed steel bars was used for pull-out specimens. The&#xa0;pull-out specimens embedded with PVC pipes, steel pipes along with steel reinforcing bars in PC. Pull-out tests were performed on three groups to examine bond strength behaviour. Test findings exhibited bond strength in failure modes,&#xa0;relationship of&#xa0;bond stress–slip, and&#xa0;the influence of bar diameter. The PC&#xa0;was&#xa0;embedded with a steel pipe, exhibiting more peak load and less bond–slip compared to all pull-out specimens. Precast concrete&#xa0;with steel pipes has high bond strength and less bar slip. The computational finite element analysis (FEA) was carried out for precast concrete and precast concrete&#xa0;embedded with PVC and steel pipe. By FEA analysis results&#xa0;we&#xa0;evaluated and compared the fracture mechanisms, principal stress variations and ultimate pull-out loads.</p>

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Assessment of compressive bond performance of steel rebars in precast concrete

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Siva Prasad Kummara,
  • Senthil Kumar N

摘要

The present study analyses how the precast concrete affects steel reinforcement of concrete relation in terms of bond strength. Precast concrete with 6, 8 and 10 mm deformed steel bars was used for pull-out specimens. The pull-out specimens embedded with PVC pipes, steel pipes along with steel reinforcing bars in PC. Pull-out tests were performed on three groups to examine bond strength behaviour. Test findings exhibited bond strength in failure modes, relationship of bond stress–slip, and the influence of bar diameter. The PC was embedded with a steel pipe, exhibiting more peak load and less bond–slip compared to all pull-out specimens. Precast concrete with steel pipes has high bond strength and less bar slip. The computational finite element analysis (FEA) was carried out for precast concrete and precast concrete embedded with PVC and steel pipe. By FEA analysis results we evaluated and compared the fracture mechanisms, principal stress variations and ultimate pull-out loads.